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http://dx.doi.org/10.5515/KJKIEES.2012.23.5.559

X, K-Band Patch Array Antenna Having One Port Feeding for Radar Detector  

Joo, Hyun-Mo (Department of Electronic Information and Communication Engineering, Hongik University)
Park, Byung-Chul (Department of Electronic Information and Communication Engineering, Hongik University)
Kay, Young-Chul (Department of Electronic Information and Communication Engineering, Hongik University)
Lee, Jeong-Hae (Department of Electronic Information and Communication Engineering, Hongik University)
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Abstract
In this paper, the X($1{\times}2$, 10.525 GHz) and K($3{\times}6$, 24.15 GHz) bands patch array antenna having single feed line for radar detector applications is proposed. The left side of the proposed array antenna is X band array antenna and the right is K band array antenna. Two array antennas with two stubs located in the front of antennas are fed through one transmission line. If the array antennas which have the different resonance frequency are fed by one transmission line using general T-junction, it interferes each other and the array antenna lost its character. Therefore, to prevent these interferences, two stubs using open and short property of stub are designed. First of all, the performances of array antenna weren't changed when each array antennas were connected with the stub and in the end, it is found out that it was the same when the two array antennas were combined and feed through the one transmission line. The measured gain at X band is 6.47 dBi and measured gain at K band is 13.07 dBi. The experimental results agree well with the simulated ones.
Keywords
Patch; Array Antenna; Single Feed; Stub; Radar Detector;
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