Wideband radar cross section reduction of a microstrip antenna with square slots

2019 ◽  
Vol 11 (4) ◽  
pp. 341-350 ◽  
Author(s):  
Zhang Jiakai ◽  
Zheng Qi ◽  
Li Haixiong ◽  
Ding Jun ◽  
Guo Chenjiang
Keyword(s):  
Cross Section ◽  
Frequency Band ◽  
Microstrip Antenna ◽  
Oblique Incidence ◽  
Radar Cross Section ◽  
Frequency Range ◽  
Band Frequency ◽  
Wideband Antenna ◽  
Wideband Radar

AbstractThis paper proposes a new radar cross section (RCS) reduced microstrip antenna incorporating 475 square slots on the patch. The proposed antenna achieves wideband RCS reduction with radiation performance sustained. The modified and reference antenna are simulated and analyzed in radiating and scattering mode, respectively. Prototypes of two antennas are fabricated and measured. Compared with the reference antenna, the simulated result shows the modified antenna RCS reduced in the frequency range 1.1–2.6 GHz, which contains the in-band and out-of-band frequency band simultaneously. And the maximum RCS reduction is 7.6dB at the frequency of 1.19GHz. Besides, the modified antenna can achieve the antenna RCS reduction in the case of oblique incidence. The prototypes of two antennas are fabricated and measured, and the accuracy of the simulation is proved by the measured result. Due to its advantages of simplicity, wideband RCS reduced, broad-angle RCS reduced, the method in this paper is suitable for wideband antenna RCS reduction in space-limited environment.

A microstrip antenna with reduced in-band and out-of-band radar cross-section

2018 ◽  
Vol 11 (2) ◽  
pp. 199-205
Author(s):  
Jiakai Zhang ◽  
Jiachen Xu ◽  
Yan Qu ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Cross Section ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Surface Current ◽  
Radar Cross Section ◽  
Frequency Range ◽  
Band Frequency ◽  
Frequency Bands ◽  
Antenna Surface ◽  
Working Frequency

This paper proposes a microstrip antenna with reduced in-band and out-of-band radar cross-section (RCS) by subtracting the area of weak scattered current on the ground plane. Fourteen square slots were subtracted from the ground plane, reducing in-band and out-of-band RCS while maintaining radiation performance. Modified and reference antenna surface current distributions were simulated and analyzed in radiating and scattering modes. Two antenna prototypes were fabricated and measured to verify the simulation. The proposed antenna RCS was reduced compared with the reference antenna in the frequency range 1–4.4 GHz, including in-band and out-of-band frequency bands. Maximum in-band and out-of-band RCS reduction was 16.3 dBsm at the working frequency, and 19.3 dBsm at 3.4 GHz, respectively

CPW-Fed Circularly Polarized Slot Antenna

2017 ◽  
Vol 7 (10) ◽  
pp. 70
Author(s):  
Ajit Chandramohan Yadav ◽  
Shafiyoddin Badroddin Sayyad
Keyword(s):  
Frequency Band ◽  
Microstrip Antenna ◽  
Dielectric Material ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Dual Band ◽  
Slot Antenna ◽  
Frequency Range ◽  
Band Frequency ◽  
Circularly Polarized

This article demonstrates the coplanar waveguide (CPW) feed L- slot microstrip antenna for multi frequency band operation is presented. The proposed antenna is excited by a single CPW feed connected to a Microstrip antenna. In this radiating patch and feed are etched on the same dielectric material. A SMA connector is used to connect the feed strip which couples the energy to a radiating patch by capacitive feed. The length and width are designed to obtained dual band frequency range. A truncation is used for multiband operations and for proper impedance matching. L- slot is used to increase the depth of S11 parameter. 

Radar cross section reduction of wideband antenna with a novel wideband radar absorbing materials

2014 ◽  
Vol 8 (7) ◽  
pp. 491-497 ◽  
Author(s):  
Fuwei Wang ◽  
Wen Jiang ◽  
Tao Hong ◽  
Hui Xue ◽  
Shuxi Gong ◽  
...  
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Wideband Antenna ◽  
Absorbing Materials ◽  
Wideband Radar

Wideband radar cross-section reduction of a microstrip antenna using slots

2018 ◽  
Vol 10 (9) ◽  
pp. 1042-1047 ◽  
Author(s):  
Jiakai Zhang ◽  
Haixiong Li ◽  
Qi Zheng ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Cross Section ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Radar Cross Section ◽  
Microstrip Patch Antenna ◽  
Current Direction ◽  
Microstrip Patch ◽  
Measurement Results ◽  
Wideband Radar

AbstractIn this study, a new microstrip patch antenna with wideband radar cross-section (RCS) reduction is presented. The RCS of the proposed antenna was reduced by subtracting the current-direction slots of the patch, with the radiation performance sustained not only for the current-direction subtraction, but also for the no modification in the ground plane. Modified and reference antenna were fabricated and measured. The simulation and measurement results showed that the modified antenna reduced the in-band and out-band RCS simultaneously with no detriment to the radiation performance. In the frequency band from 3.9 to 8.1 GHz, the RCS of the modified antenna was reduced in the whole band compared with the RCS of the reference antenna. The maximum RCS reduction was 7 dB at a frequency of 6.7 GHz.

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