Radar cross section reduction and gain enhancement of slot antenna using polarization conversion metasurface for X‐band applications

2021 ◽  
Author(s):  
Joysmita Chatterjee ◽  
Akhilesh Mohan ◽  
Vivek Dixit
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Slot Antenna ◽  
Polarization Conversion ◽  
Gain Enhancement ◽  
X Band

scholarly journals Low-RCS, Circular Polarization, and High-Gain Broadband Antenna Based on Mirror Polarization Conversion Metasurfaces

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Liang Zhang ◽  
Changqing Liu ◽  
Chun Ni ◽  
Meng Kong ◽  
Xianliang Wu
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Cross Section ◽  
High Gain ◽  
Slot Antenna ◽  
Polarization Conversion ◽  
Broadband Antenna ◽  
X Band ◽  
Fabry Perot ◽  
Operating Bandwidth

In this paper, a novel slot antenna array that is based on mirror polarization conversion metasurfaces (MPCM) is proposed. It achieves circular polarization (CP) and effectively reduces the radar cross section (RCS) and increases gain in the entire x-band. This design uses the mirrored composition of the polarization conversion metasurfaces (PCM) on the top surface of the substrate. The MPCM covers a 2 × 2 slot antenna array that is fed with by a sequentially rotating network. The CP radiation is realized by the polarization conversion characteristics of the PCM. At the same time, the reduction of RCS is achieved by 180° (±30°) reflection phase difference between two adjacent PCMs. The improvement in gain is achieved by using a Fabry–Perot cavity, which is constituted by the ground of the antenna and the PCM. Simulated and measured results show that approximately 46.4% of the operating bandwidth is in the range of 7.5–12 GHz (AR < 3 dB) and the gain of the antenna with MPCM is at least 5 dB higher than the reference antenna. Moreover, the monostatic RCS is reduced from 8 to 20 GHz.

scholarly journals Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials

2016 ◽  
Vol 25 (2) ◽  
pp. 241-246 ◽  
Author(s):  
Qiang Fu ◽  
Cheng-Li Fan ◽  
Si-Jia Li ◽  
Gang Wang ◽  
Xiang-Yu Cao
Keyword(s):  
Cross Section ◽  
Broad Band ◽  
Radar Cross Section ◽  
Slot Antenna ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

SRR-Based High Gain Microstrip Antenna with Low Radar Cross Section

2014 ◽  
Vol 644-650 ◽  
pp. 4092-4094
Author(s):  
Shu Juan Wang
Keyword(s):  
Cross Section ◽  
Microstrip Antenna ◽  
Radar Cross Section ◽  
High Gain ◽  
Ring Resonators ◽  
Analysis Method ◽  
Split Ring ◽  
Split Ring Resonators ◽  
X Band ◽  
Scattering Wave

The split ring resonators (SRR) is designed to work at X band and its equivalent medium parameters are estimated by using the equivalent analysis method. The high gain microstrip antenna, which is based on Photonic BandGap (PBG) structure, is also studied. To make the scattering wave deviates mirror direction and reduce the out-band Radar Cross Section (RCS) without affecting the performance of antenna, the designed SRR is used as the cover of PBG structure microstrip antenna. The results show that the forward gain of PBG structure antenna is 0.8 dB higher than the tradition antenna. After the SRR covers on the PBG structure antenna, the gain of antenna is unchanged and the RCS of the mirror direction decreases for all incident angles, and the most decrement is 21.05 dB.

scholarly journals Analysis of the Radar Cross Section of an X-band Active Transponder

2011 ◽  
Vol 22 (3) ◽  
pp. 327-335
Author(s):  
Ji-Hwan Hwang ◽  
Soon-Gu Kwon ◽  
Joong-Sun Won ◽  
Yi-Sok Oh
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
X Band

scholarly journals Plasmon resonances management of meta-mirror for combining radar cross section (RCS) reduction and specular reflection with frequency selectivity

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ali Pesarakloo ◽  
Alireza Oruji
Keyword(s):  
Cross Section ◽  
Incident Wave ◽  
Specular Reflection ◽  
Radar Cross Section ◽  
Unit Cell ◽  
Frequency Selectivity ◽  
Polarization Conversion ◽  
Plasmon Resonances ◽  
Specific Frequency

AbstractIn this paper using Plasmon Resonances Management (PRM), a bi-functional meta-mirror is proposed in which, the meta-mirror can obtain two opposite properties in two different frequency ranges. In this method, an anisotropic unit cell with polarization conversion property is modified to have two plasmon resonances in both symmetric and anti-symmetric planes in a specific frequency. This allows the unit cell to have the property of unchanged polarization in that frequency. The meta-mirror is composed of this modified unit cell and its mirror as a chessboard arrangement and the incident wave on the meta-mirror is reflected as in-phase in that specific frequency i.e. specular reflection, while as out-of-phase in other frequencies i.e. RCS reduction. The designed meta-mirror in this paper demonstrates the RCS reduction in two side-bands from 4 to 9 GHz and 10.8 to 14.8 GHz while behaving as a specular reflection in the frequency around 10 GHz.

Radar Cross Section Measurements and Simulations of a Model Airplane in the X-band

PIERS Online ◽  
2009 ◽  
Vol 5 (4) ◽  
pp. 377-380 ◽  
Author(s):  
Inácio M. Martin ◽  
Mauro Angelo Alves ◽  
G. G. Peixoto ◽  
Mirabel C. Rezende
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
X Band
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