Coupler Integrated Microstrip Patch Linear Phased Array for Self-Calibration

In this paper, a coupler integrated microstrip patch linear phased array is proposed as a new self-calibration system. The proposed coupler placed along the edge of the microstrip patch antenna is weakly coupled to the antenna array. This allows self-calibration without affecting the radiation perfo...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2020-09, Vol.19 (9), p.1-1
Main Authors: Chae, Soo-Chang, Jo, Hye-Won, Oh, Ju-Ik, Kim, Ghoo, Yu, Jong-Won
Format: Article
Language:English
Subjects:
active antenna system
Antenna arrays
Antenna measurements
Calibration
Coupler integrated microstrip patch
Couplers
Gain
linear phased array antenna
Microstrip antenna arrays
Microstrip antennas
Network analysers
Patch antennas
Phased arrays
Root-mean-square errors
Self calibration
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Summary:In this paper, a coupler integrated microstrip patch linear phased array is proposed as a new self-calibration system. The proposed coupler placed along the edge of the microstrip patch antenna is weakly coupled to the antenna array. This allows self-calibration without affecting the radiation performance of the antenna array. A 1x4 coupler integrated patch linear phased array and a beamformer operating at 5.8 GHz were implemented to verify the new self-calibration system. The measurement result using the self-calibration is very close to the result with a vector network analyzer. The coupler integrated patch linear phased array proposed as a new self-calibration system has 0.22dB RMSE(root mean square error) magnitude and 1.2 RMSE phase. The calibration method using a proposed antenna array is expected to on-site calibration.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2020.3011862