A Study on the Power Divider of the Microstrip Antenna for Identification Friend or Foe Radar

2011 ◽  
pp. 204-214
Author(s):  
Bong-Ki Jang ◽  
Young-soon Lee
Keyword(s):  
Microstrip Antenna ◽  
Power Divider

Millimeter-wave waveguide-based out-of-phase power divider/combiner using microstrip antenna

2014 ◽  
Vol 68 (12) ◽  
pp. 1234-1238 ◽  
Author(s):  
Kaijun Song ◽  
Guoliang Li ◽  
Qi Duan ◽  
Shunyong Hu ◽  
Yong Fan
Keyword(s):  
Millimeter Wave ◽  
Microstrip Antenna ◽  
Power Divider

scholarly journals A Generalized 90° Out-of-Phase Wilkinson Power Divider for Dual Port UHF CP RFID Antennae with variable Port Distance

2020 ◽  
Author(s):  
W Akash Sovis ◽  
Manilka Jayasooriya
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Phase Delay ◽  
Power Divider ◽  
Design Parameters ◽  
Feeding Method ◽  
Future Design ◽  
Antenna Performance ◽  
Quarter Wavelength ◽  
Wilkinson Power Divider

In this paper a microstrip Wilkinson power divider with a 90° phase delay at one output port is proposed to obtain circular polarization to feed a dual port RFID antenna. The 90° phase delay was obtained by embedding an extra quarter wavelength at one port of the Wilkinson power divider. The feeding circuit is then mounted on the ground plane of the microstrip antenna feeding the radiating patch directly through the ground plane and dielectric layer thus reducing any fringing effect and resulting a mechanically compact unit. The proposed feeding method offers better expectation of antenna performance with minimal attenuation and coupling losses. The design process generalizes geometric pa- rameters of the Wilkinson power divider for variable port distances. The paper considers both UK and US RFID center frequencies, 870 MHz and 915 MHz respectively. Numeri- cally computed values for geometric design parameters for both frequencies are tabled as future design tools for port distances varying from 18 mm up to 34 mm at 870 MHz and 17 mm up to 32 mm at 915 MHz. Simulation results indicate a return loss (S11) of -20 dB and -26 dB at 870 MHz and 915 MHz operational frequencies respectively at 270° angled quarter wavelength.

Back-to-Back Microstrip Antenna Fed With Tunable Power Divider

2015 ◽  
Vol 63 (5) ◽  
pp. 2348-2353 ◽  
Author(s):  
Yang-Shun Liu ◽  
Jeen-Sheen Row
Keyword(s):  
Microstrip Antenna ◽  
Power Divider
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