2019 IEEE East-West Design & Test Symposium (EWDTS) | 2019
Planar Butler Matrix Based on Compact Taps
Abstract
The paper presents a planar Butler matrix operating in the range of 0.9-1.05 GHz, implemented on compact directional couplers. The intersecting lines in the matrix are implemented based on the crossover. Modeling and electrodynamic analysis of the circuits was performed in the NI-AWR Design Environment program. A model of the proposed matrix was also made using photolithography. Experimental and theoretical results have good agreement. The area of the Butler matrix is 59.6% smaller than the area of the standard scheme, with the band reduced by only 15%.