Journal ArticleDOI
A Novel Planar Reconfigurable Monopulse Antenna for Indoor Smart Wireless Access Points’ Application
TLDR
The capability of reconfigurable monopulse beams ensures that the proposed antenna is a good candidate for smart WAP applications.Abstract:
In this paper, a novel planar reconfigurable monopulse antenna with compact size is proposed and studied for indoor smart wireless access points (WAPs) application. Circular polarization is achieved by using a dual-mode substrate integrated waveguide (SIW) slot antenna. Two diagonal ports are individually used to excite the SIW element antenna to achieve a 180° phase-shifting excitation. A reconfigurable $2 \times 2$ prototype is developed with the proposed element antenna, and it uses eight PIN diodes as four switches to implement the reconfiguration. Sum beams, difference beams in azimuth and elevation planes, and bidifference beams are generated. Measurement results verify the designed prototype, showing that the antenna has a null depth of over 30 dB and a peak sum beam gain of 12.29 dBi. The measured 10-dB return loss bandwidths are 5.72–5.96, 5.75–5.95, 5.73–5.97, and 5.76–5.94 GHz for the sum, elevation difference, azimuth difference and bidifference beams, respectively. And their measured 3-dB axial ratio (AR) bandwidths are 5.84–5.88, 5.86–5.90, 5.85–5.9, 5.85–5.9, and 5.84–5.91 GHz. The capability of reconfigurable monopulse beams ensures that the proposed antenna is a good candidate for smart WAP applications.read more
Citations
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Journal ArticleDOI
Design of a Wideband Quad-Polarization Reconfigurable Patch Antenna Array Using a Stacked Structure
Jun Hu,Zhang-Cheng Hao,Wei Hong +2 more
TL;DR: In this paper, a stacked patch antenna array composed of four linearly polarized antenna elements is proposed for the implementation of four polarization reconfigurable states, i.e., vertical linear polarization (LP), horizontal LP, left-hand circular polarization, and right hand circular polarization.
Journal ArticleDOI
A Wideband Quad-Polarization Reconfigurable Metasurface Antenna
TL;DR: The simulation and experimentation verify that the proposed antenna can achieve quad-polarization reconfiguring features in a wide frequency band, which indicate the good performance of the proposed polarization reconfigurable metasurface antenna.
Journal ArticleDOI
A Compact Polarization-Reconfigurable and 2-D Beam-Switchable Antenna Using the Spatial Phase Shift Technique
Jun Hu,Zhang-Cheng Hao +1 more
TL;DR: In this article, a compact patch array antenna with reconfigurable polarizations and 2D switchable beams is developed based on the spatial phase shift technique, which is composed of a square driven patch, two sets of perturbation segments connected to the driven patch via p-i-n diodes for polarization diversity, a parasitic patch, and three switchable feeding probes integrated with a designed single-pole triple-throw switch.
Journal ArticleDOI
A Bidirectional Same Sense Circularly Polarized Endfire Antenna Array With Polarization Reconfigurability
TL;DR: In this article, a bidirectional same sense circularly polarized (Bi-SSCP) endfire antenna array with reconfigurable polarization is proposed and implemented by adopting two pairs of switchable electric dipoles, which have a 180° phase difference inherently.
Journal ArticleDOI
60 GHz Substrate-Integrated Waveguide-Based Monopulse Slot Antenna Arrays
TL;DR: In this article, a new kind of substrate-integrated waveguide (SIW) slot antenna array with 1-D and 2-D monopulse radiation patterns is presented, which exhibits a wide phase/amplitude balance bandwidth.
References
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Journal ArticleDOI
Understanding and measuring circular polarization
TL;DR: An introduction to the topic of circular polarization is necessary to promote an understanding of the propagation aspects of modern communications system design and a simple laboratory-based project is described that requires the design, fabrication, and measurement of a crossed dipole antenna.
Journal ArticleDOI
Development of Low Profile Cavity Backed Crossed Slot Antennas for Planar Integration
TL;DR: In this article, a single-fed low profile cavity backed crossed slot antennas for dual frequency dual linear polarization and circular polarization applications are proposed by employing the substrate integrated waveguide (SIW) technique in the antenna designs.
Journal ArticleDOI
94 GHz Substrate Integrated Monopulse Antenna Array
Yu Jian Cheng,Wei Hong,Ke Wu +2 more
TL;DR: In this paper, a planar W-band monopulse antenna array based on the substrate integrated waveguide (SIW) technology is designed, where the sum-difference comparator, 16-way divider and 32 × 32 slot array antenna are all integrated on a single dielectric substrate in the compact layout through the low-cost PCB process.
Journal ArticleDOI
Multilayered substrate integrated waveguide (MSIW) elliptic filter
TL;DR: In this paper, a C-band elliptic filter with four folded MSIW cavities is simulated by using high frequency structure simulator software and fabricated with a two-layer printed circuit board process, measured results show good performance and in agreement with the simulated results.
Journal ArticleDOI
A compact single layer monopulse microstrip antenna array
Hao Wang,Da-Gang Fang,X.G. Chen +2 more
TL;DR: In this article, a single layer monopulse microstrip patch antenna array for the application of monopulse radar has been designed, manufactured and tested, and the effects of spurious radiation and blockage caused by the comparator on the sidelobe level are estimated.
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