Bidirectional periodic leaky-wave antenna on SIW with reduced side lobe level
01 Dec 2015-pp 1-2
TL;DR: In this paper, a bidirectional periodic leaky-wave antenna (LWA) using substrate integrated waveguide (SIW) based power divider is presented at X-band.
Abstract: In this paper, a bidirectional periodic leaky-wave antenna (LWA) using substrate integrated waveguide (SIW) based power divider is presented at X-band. Later, by incorporating new kind of slot, side-lobe level (SLL) is improved by 1 dB. The gain is achieved by proposed antenna is 12.1 dBi within a suitable scanning range. The performance of both antennas are compared by Ansoft HFSS simulation software.
Citations
More filters
TL;DR: In this article, the authors proposed a hybrid method to determine the location and shape of a meandering radiating slot on the substrate integrated waveguide (SIW), where different shapes of the long slot are compared with each other to achieve an appropriate shape for a better radiation pattern.
Abstract: This paper proposes a hybrid method to determine the location and shape of a meandering radiating slot on the substrate integrated waveguide (SIW). At first, different shapes of the long slot are compared with each other to achieve an appropriate shape for a better radiation pattern. Afterwards, the fine-tuned location of the obtained long slot is calculated using curve-fitting techniques. Six-order polynomial and Gaussian functions are applied to approximate the slot coordination on the broad wall of SIW. A leaky wave antenna with the proposed approach is designed and fabricated to establish a 62° beam direction from the broadside of the antenna at 15.9 GHz central frequency and 400 MHz bandwidth. The simulation and experimental results are compared to evaluate the effectiveness of the proposed method. The antenna has a gain about 14 dB and an efficiency of 89% in the desired bandwidth.
2 citations
DOI•
10 Jul 2022
TL;DR: In this article , a bi-directional periodic leaky-wave antenna (LWA) is presented for the millimeter-wave (mm-wave) band with suppressed stopband and independent beam-scanning laws for top and bottom sides of the antenna, respectively.
Abstract: A bi-directional periodic leaky-wave antenna (LWA) is presented for the millimeter-wave (mm-wave) band with suppressed stopband and independent beam-scanning laws for top and bottom sides of the antenna, respectively. The bi-directional slot-pair antenna is designed to radiate out-of-plane beams along two directions on each antenna face. The operation of this antenna is verified using full-wave simulations at a design frequency of 28 GHz. The antenna can be engineered to point high gain beam along specified angles, and can be adapted to provide precision control of the independent output beams in various frequency bands.
1 citations
10 Jul 2022
1 citations
01 Dec 2017
TL;DR: In this paper, a bi-directional frequency beam-scanning leaky-wave antenna (LWA) using TE20 mode substrate integrated waveguide (SIW) is proposed.
Abstract: In this paper, a bi-directional frequency beam-scanning leaky-wave antenna (LWA) using TE20 mode substrate integrated waveguide (SIW) is proposed. 45° tilted radiating slots are etched (based on E-field maxima) on the top wall of TE20 mode SIW power divider. Using a novel microstrip to SIW transition is used to feed the proposed design. The proposed antenna shows a frequency beam scanning range of 54° in each quadrant having the maximum gain of 10.8 dBi within the operating range of 10–11.5 GHz. Full-wave simulations are performed in HFSS.
27 Mar 2022
TL;DR: In this paper , two different bidirectional periodic leaky-wave an-tennas (LWAs) are presented for the millimeter-wave (mm-wave) band with suppressed stopbands and orthogonal radiation di-rections.
Abstract: Two different bidirectional periodic leaky-wave an-tennas (LWAs) are presented for the millimeter-wave (mm-wave) band with suppressed stopbands and orthogonal radiation di-rections: a bidirectional side-fire antenna with left/right in-plane radiation and a bidirectional slot-pair antenna with top/bottom out-of-plane radiation. The operations of these antennas are con-firmed using full-wave simulations, with a broadside frequency of approximately 28 GHz. These antennas can be individually engineered to form various radiation patterns in each of their radiation planes, and can further be combined to design a tetra-directional periodic LWA.
References
More filters
TL;DR: In this article, the authors provide an overview of the recent advances in the modelling, design and technological implementation of SIW structures and components, as well as their application in the development of circuits and components operating in the microwave and millimetre wave region.
Abstract: Substrate-integrated waveguide (SIW) technology represents an emerging and very promising candidate for the development of circuits and components operating in the microwave and millimetre-wave region. SIW structures are generally fabricated by using two rows of conducting cylinders or slots embedded in a dielectric substrate that connects two parallel metal plates, and permit the implementation of classical rectangular waveguide components in planar form, along with printed circuitry, active devices and antennas. This study aims to provide an overview of the recent advances in the modelling, design and technological implementation of SIW structures and components.
1,129 citations
TL;DR: In this article, a uniform slotted SIW leaky-wave antenna is designed that has good beam scanning from near broadside (though not exactly at broadside) to forward endfire.
Abstract: A novel slotted substrate integrated waveguide (SIW) leaky-wave antenna is proposed. This antenna works in the TE10 mode of the SIW. Leakage is obtained by introducing a periodic set of transverse slots on the top of the SIW, which interrupt the current flow on the top wall. It is seen that three modes (a leaky mode, a proper waveguide mode, and a surface-wave-like mode) can all propagate on this structure. The wavenumbers of the modes are calculated theoretically and are numerically evaluated by HFSS simulation. The leakage loss, dielectric loss, and conductor loss are also analyzed. A uniform slotted SIW leaky-wave antenna is designed that has good beam scanning from near broadside (though not exactly at broadside) to forward endfire. This type of SIW leaky-wave antenna has a wide impedance bandwidth and a narrow beam that scans with frequency. Measured results are consistent with the simulation and the theoretical analysis.
405 citations
TL;DR: In this paper, the leakage loss of SIW structures increases with the distance between the via-holes or via-slots, and this leakage loss is studied in detail and used to design a periodic leaky-wave antenna.
Abstract: Substrate integrated waveguides (SIW) are built up of periodically arranged metallic via-holes or via-slots The leakage loss of SIW structures increases with the distance between the via-holes or via-slots An open periodic waveguide with a large via distance supports the propagation of leaky-wave modes and can thus be used for the design of a leaky-wave antenna In this paper, this leakage loss is studied in detail and used to design a periodic leaky-wave antenna The proposed concept represents an excellent choice for applications in the millimeter-wave band Due to its versatility, the finite difference frequency domain method for periodic guided-wave or leaky-wave structures is used to analyze the characteristics of the proposed periodic leaky-wave antenna Two modes (TE10 and TE20) are investigated and their different leaky-wave properties are analyzed Based on the proposed leaky-mode analysis method, a novel periodic leaky-wave antenna at 28-34 GHz is designed and fabricated
186 citations
01 Dec 2013
TL;DR: Design principles for implementation of broadband T-type and Y-type power divider based on Substrate-Integrated Waveguide (SIW) technology has been presented and different design curves have been developed based on simulation results.
Abstract: In this paper, design principles for implementation of broadband T-type and Y-type power divider based on Substrate-Integrated Waveguide (SIW) technology has been presented. Different design curves have been developed based on simulation results and are used to implement 1×2 power dividers of Y-type and T-type. Finally, by cascading T-type and Y-type stages a 1×4 Power divider of equal division is designed and simulated. The proposed design shows a broad bandwidth (−20 dB) of 18.3% and insertion-loss Bandwidth (1%) of 17.86%.
20 citations
01 Jun 2015
TL;DR: In this paper, the authors compared the performance of two-and four-elements SIW-based leaky-wave array antennas and their performance was compared with a 1×4 cascaded SIW power divider with effective matching port.
Abstract: In this paper, 2-elements and 4-elements substrate integrated waveguide (SIW) based leaky-wave array antennas are presented and their performances are compared. The enhanced gain and scan angles for 2-elements are 15.4 dBi and 45° respectively and for 4-elements the same is 18.4 dBi and 30° respectively. In the final design of 4-elements array antenna, sinusoidal variation of slot length is used to reduce the side lobe level (SLL). A 1×4 cascaded SIW power divider with effective matching port is used to feed the antenna. Simulations of the antennas are carried out using HFSS software and presented here.
11 citations