Showing papers on "Cassegrain antenna published in 2016"
TL;DR: A novel mesh deployable Ka-band antenna design that folds in a 1.5 U stowage volume suitable for 6 U (10 × 20 × 30 cm3) class CubeSats is presented.
Abstract: CubeSats are positioned to play a key role in Earth Science, wherein multiple copies of the same RADAR instrument are launched in desirable formations, allowing for the measurement of atmospheric processes over a short evolutionary timescale. To achieve this goal, such CubeSats require a high-gain antenna (HGA) that fits in a highly constrained volume. This paper presents a novel mesh deployable Ka-band antenna design that folds in a 1.5 U $(10\times 10 \times 15 \,\text{cm}^{3})$ stowage volume suitable for 6 U $(10\times 20 \times 30 \,\text{cm}^{3})$ class CubeSats. Considering all aspects of the deployable mesh reflector antenna including the feed, detailed simulations and measurements show that 42.6-dBi gain and 52% aperture efficiency is achievable at 35.75 GHz. The mechanical deployment mechanism and associated challenges are also described, as they are critical components of a deployable CubeSat antenna. Both solid and mesh prototype antennas have been developed and measurement results show excellent agreement with simulations.
149 citations
TL;DR: In this paper, the authors achieved the field trial demonstration of 80 Gb/s polarization-division-multiplexing quadrature phase shift keying modulated W-band mm-wave signal delivery over a 300m Cassegrain antenna-based (CA-based) 4 × 4 MIMO wireless link.
Abstract: High-speed long-haul wireless transmission links are required to meet the demand of mobile backhauling and emergency communications. We experimentally demonstrated ultra-high-speed 432-Gb/s polarization-division-multiplexing 16-ary quadrature amplitude modulation modulated W-band millimeter-wave (mm-wave) signal delivery over a 2-m horn antenna-based (HA-based) 4 × 4 multiple-input multiple-output (MIMO) wireless link, enabled by photonic mm-wave generation and optical/antenna polarization multiplexing. We further achieved the field trial demonstration of 80-Gb/s polarization-division-multiplexing quadrature phase shift keying modulated W-band mm-wave signal delivery over a 300-m Cassegrain antenna-based (CA-based) 4 × 4 MIMO wireless link, adopting photonic mm-wave generation, multi-band multiplexing, and optical/antenna polarization multiplexing. To the best of our knowledge, 80 Gb/s or 74.7 Gb/s after removing 7% forward-error-correction overhead is a record for W-band wireless signal delivery over a few hundred meters.
64 citations
TL;DR: In this paper, a Yagi-Uda antenna with a stepped-width reflector is presented, which is shorter than the driven element as a result of the stepped width structure.
Abstract: A Yagi-Uda antenna with a stepped-width reflector is presented. Totally different than the traditional ones, the proposed reflector is shorter than the driven element as a result of the stepped-width structure. To further understand its working mechanics, an equivalent circuit to a dipole with a parasitic element is employed to explain the shortened length of the stepped-width reflector. Then, the proposed stepped-width reflector, shorter than the driven element, was applied to design, fabrication, and measurement of a Yagi-Uda antenna. Measured results show a good agreement with the simulated ones. In particular, the total length of the reflector employed in the Yagi-Uda antenna is 50 mm, and that of the driven element is 53 mm, which verifies the shorter length of the reflector and benefits achieving a smaller size.
51 citations
TL;DR: In this paper, a quadruple-ridged flared horn antenna is used to enhance the radiation properties through the profiling of the ridge taper, instead of brute-force optimization.
Abstract: In this paper, a systematic design technique for quadruple-ridged flared horn antennas is presented, to enhance the radiation properties through the profiling of the ridge taper. The technique relies on control of the cutoff frequencies of specific modes inside the horn, instead of brute-force optimization. This is used to design a prototype antenna as a feed for an offset Gregorian reflector system, such as considered for the Square Kilometer Array (SKA) radio telescope, to achieve an optimized aperture efficiency from 2 to 12 GHz. The antenna is employed with a quadraxial feeding network that allows the excitation of the fundamental $TE_{11}$ mode, while suppressing all other modes that causes phase errors in the aperture. Measured results confirm the validity of this approach, where good agreement is found with the simulated results.
27 citations
TL;DR: In this article, a prototype for a space-borne smart reconfigurable reflector, whose reflector surface can be changed intentionally using surface adjustment actuators, has been developed, and its performance was evaluated through experiments.
Abstract: A prototype for a space-borne smart reconfigurable reflector, whose reflector surface can be changed intentionally using surface adjustment actuators, has been developed, and its performance was evaluated through experiments. The smart reconfigurable reflector was designed as a sub-reflector of a space antenna for observations in the extremely highfrequency band (frequency range: 30 -300 GHz) and is used for correcting the path length errors in the antenna system caused by surface deformations of the main reflector. It consists of a solid surface, supporting members, and surface adjustment actuators. The surface adjustment actuators are a key part of the smart reconfigurable reflector, and each consists of a piezoelectric stack actuator and a displacement magnifying mechanism. Functional tests were performed in order to investigate the performance of the actuator. The results indicate that the actuator has a stroke of more than 0.9 mm with an accuracy of 0.01 mm and a force of more than 90 N. The control ...
24 citations
Patent•
27 May 2016TL;DR: In this article, a deployable antenna consisting of a mesh attached to foldable ribs, a hub and a sub-reflector is described, which can be stowed in a tight space for launching in space, and later deployed by extending out of its container.
Abstract: A deployable antenna is described. The antenna comprises a mesh attached to foldable ribs, a hub and a sub-reflector. The antenna can be stowed in a tight space for launching in space, and later deployed by extending out of its container. The antenna is designed to work in the Ka band or other bands and can increase data rates and function as a radio antenna.
23 citations
TL;DR: In this article, the effect of a hybrid reflector on the radiation pattern of an ultrawideband diamond dipole antenna was investigated and the authors proposed a solution to mitigate this problem using both electrical and magnetic conductors.
Abstract: This communication studies the effect of a hybrid reflector on the radiation pattern of an ultrawideband diamond dipole antenna. The cause of a split radiation pattern in the broadside direction appearing when using a uniform artificial-magnetic-conductor-based reflector is investigated and is found to be due to destructive interference in the broadside direction produced by surface currents localized in certain areas of the reflector. A hybrid reflector is then proposed to mitigate this problem using both electrical and magnetic conductors. This solution enhances the gain in the broadside direction of the ultrawideband antenna. A complete antenna with a feeding system and a hybrid reflector has been fabricated and the measurement results are presented.
22 citations
TL;DR: In this paper, four-arm Archimedean spiral antennas, capable of generating both senses of circular polarization with broadside radiation patterns, are investigated as a primary feed in symmetrical parabolic reflector antennas with circular rims.
Abstract: Four-arm Archimedean spiral antennas, capable of generating both senses of circular polarization with broadside radiation patterns, are investigated as a primary feed in symmetrical parabolic reflector antennas with circular rims. Unidirectional, center-fed, and compact spiral antennas are studied, backed by a planar reflector as a ground plane. Both right- and left-handed circularly polarized fields with broadside radiation patterns, according to the first and third modes of the spiral, are realized by confining the radiation zone to less than a three-wavelength circumference. The proposed feed exhibits excellent pattern symmetry and axial ratios well below 0.5 dB at the boresight direction for both senses of polarization. In this letter, the performance of the proposed spiral antenna is fully addressed as primary feeds in symmetrical parabolic reflector antennas. Different antenna parameters such as gain, cross polarization, and efficiency are studied for paraboloids, having different focal-length-to-diameter ratios, for both senses of circular polarization. Efficiencies of 70% and higher are obtained over a frequency band of 2.5-5.0 GHz.
18 citations
TL;DR: The coupling efficiency and variance of a Maksutov-Cassegrain fiber (single-mode) system distorted by atmospheric turbulence are numerically evaluated using second-order and fourth-order moments under a Von Karman spectrum.
Abstract: Maksutov–Cassegrains are widely used in free-space optical communication The coupling efficiency and variance of a Maksutov–Cassegrain fiber (single-mode) system distorted by atmospheric turbulence are numerically evaluated using second-order and fourth-order moments under a Von Karman spectrum Considering the limited cost and size of the equipment, the Maksutov–Cassegrain aperture should satisfy DA/ρS≈7 (ρS approximates the characteristic atmospheric coherence length), and the obscuration ratio should be no more than 02
15 citations
TL;DR: In this article, an axially displaced monopulse dual-reflector antenna operating at W band is proposed, which consists of a hyperboloid as the subreflector, a combination of series of paraboloids with different focal length as the main reflector and a low-loss sum-and-difference network, which is based on waveguide magic Ts and bent waveguides.
Abstract: An axially displaced monopulse dual-reflector antenna operating at W band is proposed in this study. The antenna configuration consists of a hyperboloid as the subreflector, a combination of series of paraboloids with different focal length as the main reflector and a low-loss sum-and-difference network, which is based on waveguide magic Ts and bent waveguides. Compared with traditional dual-reflector antenna, axial size and weight of this novel antenna can be reduced to a certain extent. Measured results show that the gain is 40.1 dBi, the sidelobe is <−19.7 dB and the null-depth is <−27.7 dB at the central frequency. The radiation patterns remain almost the same in the bandwidth. It is demonstrated that this antenna exhibits good radiation performances and is suitable for inter-satellite systems.
15 citations
TL;DR: In this article, a steerable spot beam reflector antenna deployed along the east/west sides of the satellite is discussed, which can be quickly repositioned to provide a flexible coverage by rotating the reflector only around its vertex.
Abstract: A steerable spot beam reflector antenna deployed along the east/west sides of the satellite is discussed in this letter. The steerable spot beam can be quickly repositioned to provide a flexible coverage by rotating the reflector only around its vertex (called “Vertex Rotation”), which has many advantages such as excellent electrical performances, simple mechanical structure, light weight, and low cost. The antenna design procedures as well as the measurement results are presented. Within the steering range of ±8.0
°
, this antenna shows the scan loss, sidelobe level (SLL), cross-polarization (XP) level, and pointing accuracy of 0.6 dB, -25.9 dB, -26.2 dB, and 0.04 °
/axis, respectively, and is highly suitable for geostationary satellite payloads.
10 Apr 2016
TL;DR: In this article, a near-field measurement setup consisting of a cylindrical reflector and a linear array feed is presented for random line-of-sight over-the-air measurements in anechoic or semi-anechoic chambers.
Abstract: In this paper we look into a near-field measurement setup consisting of a cylindrical reflector and a linear array feed. The main application is Random Line-Of-Sight Over-The- Air measurements in anechoic or semi-anechoic chambers (i.e., anechoic chamber with reflecting floor). More specifically, the aim is testing the wireless communication systems on automotive vehicles. The aim is to generate the uniform field distribution of a plane wave over a pre-defined test zone containing the car or at least the part of the car containing the antenna(s). The field intensity variations over the testing zone have been investigated for reference measurements over the testing frequency bandwidth, i.e., 1.6–2.8 GHz.
TL;DR: In this article, the authors studied the effects of defocusing on the transmission characteristics of the defocused Cassegrain antenna system and found that while defocused 2.5 cm, the transmission efficiency of Cassegras will decrease 80% of the initial efficiency.
10 Apr 2016
TL;DR: A novel mesh deployable Ka-band antenna design folding in a 1.5U stowage volume suitable for 6U (10×20×30cm3) class CubeSats is presented and measurement results show excellent agreement with simulations.
Abstract: This paper presents a novel mesh deployable Ka-band antenna design folding in a 1.5U (10×10×15cm3) stowage volume suitable for 6U (10×20×30cm3) class CubeSats. Detailed results, considering all aspects of the deployable mesh reflector antenna, show that 42.6 dBi gain and 52% aperture efficiency is achievable at 35.75GHz. The mechanical deployment mechanism is also described as it constraints and drive the RF choices. The mesh prototype antenna has been fabricated and measurement results show excellent agreement with simulations.
01 Jul 2016
TL;DR: In this paper, a new design of the parabolic dish solar concentrator using dual reflector Gregorian method has been presented, which applies an additional reflector to place the engine generator in the bottom of the primary reflector parabolic dishes.
Abstract: Parabolic Dish Solar Concentrator (PDSC) are commonly used to generate electricity from thermal energy employing Stirling engine, steam, photovoltaic and thermoelectric generator. Heat concentrator of Parabolic Dish (PD) is used for focusing radiation of the sun into the receiver that connected to the generator system. The conventional generator system is located above the focus of the primary reflector parabolic dish. This paper presents a new design of the parabolic dish solar concentrator using dual reflector Gregorian method. The design applies an additional reflector to place the engine generator in the bottom of the primary reflector parabolic dish. The design was verified using “SolTrace”, a software package for tracing the solar ray. It found that the heat flux collected was 0.73 MW/m2 for the designed parabolic with 300 cm primary diameter. This parabolic have obtained 594.65x geometry concentration ratio and 84.27% optical efficiency.
TL;DR: In this article, a novel concept for designing a broadband conjugate matched feed horn to cancel the high unwanted cross-polar components generated because of offset reflector geometry having low F/D and high offset angle is presented.
Abstract: This letter presents a novel concept for designing a broadband conjugate matched feed horn to cancel the high unwanted cross-polar components generated because of offset reflector geometry having low F/D and high offset angle. A new kind of symmetrical cascaded discontinuities is proposed in circular waveguide for broadband operation of conjugate matched feed. The designed feed has been used to illuminate an offset parabolic reflector antenna, and the secondary radiation patterns have been computed. The designs of feeds have been presented for different F/D's. Significant improvement in the cross polarization is achieved over 10% frequency bandwidth at Ku-band.
TL;DR: In this article, the sum and difference patterns can be obtained by in-phase and out-of-phase excitations of the two coaxial ports of a crescent-shaped radiating element fed from two sides at an angle close to 90°.
Abstract: A novel ultrawideband pattern diversity antenna, with sum and difference radiation patterns used in monopulse tracking, is proposed. To achieve pattern diversity, a crescent-shaped radiating element is fed from two sides at an angle close to 90°, by two coaxial feeds. The ground is a corner-shaped cavity. The sum and difference patterns can be obtained by in-phase and out-of-phase excitations of the two coaxial ports. A single-element antenna is first studied to show the operating principle of the design. A modified design with two elements is then proposed and studied through simulations and measurements of a fabricated prototype, showing excellent radiation characteristics over a large frequency bandwidth. The application of this antenna as a reflector feed is then studied. It is shown that the antenna can theoretically feed a prime focus reflector with 60% (for the sum pattern) efficiency over a 48% fractional bandwidth (5.5–9 GHz), with a maximum efficiency of 75%. The antenna is compact (5 × 4.1 × 2 cm3) and has low cost and simple fabrication. To the best of authors’ knowledge, this is the first attempt to feed a reflector with this class of antennas.
TL;DR: In this article, a novel parabolic antenna by employing reflection gradient metasurface which is composed of a series of circle patches on a grounded dielectric substrate was proposed, where a patch antenna was placed at the focal point of the surface as a feed source, then the quasi-spherical wave emitted by the source is reflected and transformed to plane wave with high efficiency.
Abstract: We present a novel parabolic antenna by employing reflection gradient metasurface which is composed of a series of circle patches on a grounded dielectric substrate. Similar to the traditional parabolic antenna, the proposed antenna take the metasurface as a “parabolic reflector” and a patch antenna was placed at the focal point of the metasurface as a feed source, then the quasi-spherical wave emitted by the source is reflected and transformed to plane wave with high efficiency. Due to the focus effect of reflection, the beam width of the antenna has been decreased from 85.9° to 13° and the gain has been increased from 6.5 dB to 20.8 dB. Simulation and measurement results of both near and far-field plots demonstrate good focusing properties of the proposed parabolic antenna.
01 Oct 2016
TL;DR: In this paper, a conical dielectric loaded circular waveguide opening to splash plate subreflector for parabolic antenna feed is proposed. But the design of the feed structure is not discussed.
Abstract: In this study, we propose a conical dielectric loaded circular waveguide opening to splash plate subreflector for parabolic antenna feed. Corrugations on the dielectric lens and splash-plate structure are optimized for antenna performance. The feed structure is designed as axi-symmetric to support zero-order azimuth currents for low cross-polarization. Resulting structure offers good gain, low sidelobe, good cross-polarization, and low VSWR for Ka-band VSAT applications where receive and transmit frequency bands are 20.2–21.2 GHz and 30–31 GHz, respectively.
10 Apr 2016
TL;DR: In this paper, a dual-polarization offset reflector antenna that has a feed antenna composed of a 2 × 2 microstrip antenna array was designed for 12 GHz band satellite broadcasting reception.
Abstract: A 12-GHz (11.7 to 12.75 GHz) band satellite service with dual-circular polarization has been studied for transmission channels to deliver advanced broadcasting services such as 8K Super Hi-Vision in Japan. A right- and left-hand circularly polarized parabolic reflector antenna will make it possible to receive the services provided over the dual-circular polarization with a single reflector antenna. We manufactured and tested a dual-polarization offset reflector antenna that has a feed antenna composed of a 2 × 2 microstrip antenna array. Measured results showed that the antenna gain was 33.7 dBi and that the cross polarization discrimination was 25 dB. This demonstrates that our design is valid for a dual-circularly polarized antenna for 12-GHz band satellite broadcasting reception.
TL;DR: In this article, a ring-focus elliptical beam reflector antenna was designed and tested with a circularly symmetric feed and two specially shaped reflectors, achieving a gain at center frequency (12.7 GHz) with an aperture efficiency of 74.6%.
Abstract: A new method for the design of elliptical beam reflector antenna is presented in this paper. By means of the basic principles of ring-focus antenna, a circularly symmetric feed and two specially shaped reflectors are used to form an elliptical beam antenna. Firstly, the design process of this ring-focus elliptical beam antenna is studied in detail. Transition function is defined and used in the design process. Then, combining the needs of practical engineering, a ring-focus elliptical beam reflector antenna is manufactured and tested. The gain at center frequency (12 GHz) is 37.7 dBi with an aperture efficiency of 74.6%. 3 dB beam-width in and plane is and , respectively. Ratio of the elliptical beam (ratio of 3 dB beam-width in and plane) is , substantially equal to designed ratio 2. Simulating and testing results match well, which testify the effectiveness of this design method.
01 Nov 2016
TL;DR: In this paper, the design of 1-18 GHz printed LPDA antenna is used as a linearly polarized feed for the parabolic reflector which has a 1.2 m diameter.
Abstract: LPDA (Log Periodic Dipole Arrays) as a reflector antenna feed offers wide range for applications. However, phase center of the LPDA changes depending on the operation frequency, which, in turn, leads to defocusing loss as frequency changes. In this study, design of 1–18 GHz printed LPDA antenna is used as a linearly polarized feed for the parabolic reflector which has a 1.2 m diameter. Optimal feed position and f/D ratio are chosen through extensive simulations. Performance parameters such as VSWR, gain and half power beamwidth are presented. Minimum aperture efficiency was recorded as 0.27 at the target band.
TL;DR: In this article, a new type of H-plane horn antenna based on the parabolic reflector principle is proposed, which is used for generating large radiation aperture and uniform phase distribution at the aperture, yielding a fan beam with very narrow beamwidth.
Abstract: A new type of H-plane horn antenna based on the parabolic reflector principle is proposed in this paper. The parabolic reflector is constructed with the substrate integrated waveguide technology and is used for generating large radiation aperture and uniform phase distribution at the aperture, yielding a fan beam with very narrow beamwidth in H-plane. A feeding source composed of a probe and an inductive-post reflector is designed as the feed, which can transmit a unidirectional incident wave toward the parabolic reflector. Two metallic strips with post arrays are designed as a transition for the matching between the horn aperture and the free space and also work as a director to realize unidirectional radiation and reduce the front-to-back ratio. The antenna has the advantages of narrow beam, compact size, and easy integration, and the operation bandwidth is from 27 GHz to 35.5 GHz. The experimental results show good agreement with the simulated results.
10 Apr 2016
TL;DR: In this paper, the design and analysis of a reflector antenna system combining two doubly-curved Circular Polarization Selective Surfaces to provide a functionality equivalent to that of a dual gridded reflector but in circular polarization is discussed.
Abstract: This paper discusses the design and analysis of a reflector antenna system combining two doubly-curved Circular Polarization Selective Surfaces to provide a functionality equivalent to that of a dual gridded reflector but in circular polarization. The key feature of this design is to use a non-resonant CPSS design to avoid the bandwidth limitation of most CPSS designs previously discussed in the literature. A specific design at Ku-band is investigated and promising results are demonstrated, providing a cross-polarization discrimination higher than 25 dB over the full band.
01 Jun 2016
TL;DR: In this article, a planar printed quasi-Yagi antenna with 3 directors and 1 concave parabolic reflector, operating in S-band, is proposed and the impedance and radiation characteristic are simulated with CST-Microwave Studio, and the antenna is fabricated and measured.
Abstract: The simplicity and intuitive design of traditional planar printed quasi-Yagi antennas has led to its widespread popularity for its good directivity. In this paper, a planar printed Quasi-Yagi antenna with 3 directors and 1 concave parabolic reflector, operating in S-band, is proposed. The impedance and radiation characteristic are simulated with CST-Microwave Studio, and the antenna is fabricated and measured. The measured results indicate that the antenna which operates at 2.25–2.63GHz can achieve an average gain of 9.45 dBi within the operating frequency range, especially a highest gain of 10.3dBi at 2.45GHz, which can be widely used in WLAN.
10 Apr 2016
TL;DR: In this paper, a dual band (Q-V) hat fed cylindrical reflector antenna is presented, which provides an efficient solution for dual band high gain antennas operating at mmw.
Abstract: A dual band (Q-V) hat fed cylindrical reflector antenna is presented. The proposed antenna is fed with a dual band corrugated hat feed. The hat feed is designed using a dual corrugation optimized to obtain a similar radiation pattern and a good matching on the two bands. The feed is illuminated by a parallel plate waveguide fed with a rectangular horn which provides large bandwidth and good efficiency. Results show that the proposed design provides an efficient solution for dual band high gain antennas operating at mmw.
TL;DR: In this article, the authors presented an analysis on the performance of two popular dual offset antennas design, i.e., the offset Cassegrain and Gregorian reflector antennas.
Abstract: We present an analysis on the performance of two popular dual offset antennas design, i.e. the offset Cassegrain and Gregorian reflector antennas. In our study, we have adopted the design parameters for the Cassegrain configuration used in the Atacama Large Milimeter Array (ALMA) project. Modifications on the original parameters are made so as to meet the design requirement of the offset configurations. To reduce spillover loss, we have adjusted the angle between the axis of the primary reflector and that of the sub-reflector to 0.20o. The results obtained from the physical optics computation show that the amplitude at the main lobe of the Gregorian configuration is approximately 74.02 dB, while that of the Cassegrain configuration is approximately 74 dB. The maximum (relative) side lobe level, SLLdB for the Cassegrain and Gregorian configurations are found as -3.67 dB and -3.69 dB respectively. Although the magnitude of the main lobe for both configurations is comparable, the Gregorian antenna gives relatively lower SLLdB. In other words, the Gregorian configuration performs relatively better than its Cassegrainian counterpart.
TL;DR: The results obtained from the physical optics simulation show that the radiation characteristics of both Cassegrain and Gregorian antennas are similar, and the offset designs exhibit the best performance, followed by the on-axis, and, finally, the off-axis designs.
Abstract: We present an analysis on the performance of the Cassegrain and Gregorian on-axis, off-axis and offset antennas. In our study, we have adopted the design parameters for the Cassegrain configuration used in the Atacama Large Millimeter Array (ALMA) project. Modifications on the original parameters are made so as to meet the design requirement for the off-axis and offset configurations. To reduce spillover loss in the offset antennas, we have adjusted the angle between the axis of the primary reflector and that of the sub-reflector, so that the feed horn is placed right next to the edge of the primary reflector. This is to allow the offset antennas to receive the highest power at the feed horn. The results obtained from the physical optics simulation show that the radiation characteristics of both Cassegrain and Gregorian antennas are similar. The offset designs exhibit the best performance, followed by the on-axis, and, finally, the off-axis designs. Our analysis also shows that the performance of both offset Cassegrain and Gregorian antennas are comparable to each other.
10 Apr 2016
TL;DR: This work presents a design of a die-castable axially corrugated matched feed horn that provides an XPD improvement better than 7 dB over a 12% bandwidth for a reflector with an f/D of 0.5.
Abstract: The inherently high cross polarization of prime focus offset reflector antennas can be compensated by launching higher order modes in the feed horn. Traditionally, the bandwidth of such systems is in the order of a few percent. We present a novel design procedure where the entire matched feed and reflector system can be efficiently optimized. This allows the design parameters of the matched feed to be directly related to the desired design goals in the secondary pattern over a specified band. Using this procedure, we present a design of a die-castable axially corrugated matched feed horn that provides an XPD improvement better than 7 dB over a 12% bandwidth for a reflector with an f/D of 0.5. An investigation of the mode requirement for an arbitrary circular aperture feed is also presented.
01 Jun 2016
TL;DR: This paper introduces a 42.6 dBi gain mesh deployable antenna folding in a 1.5U stowage volume suitable for 6U class CubeSats.
Abstract: CubeSat will play a key role in Earth Science missions wherein multiple copies of the same RADAR instrument are launched in desirable formations. This will allow for the measurement of atmospheric processes over a short, evolutionary timescale. Such RADAR instruments require a high-gain antenna that fits in a constrained and limited volume. This paper introduces a 42.6 dBi gain mesh deployable antenna folding in a 1.5U stowage volume suitable for 6U class CubeSats.