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An Integrated Lumped-Element Quadrature Coupler With Impedance Transforming
IEEE Microwave and Wireless Components Letters ( IF 2.374 ) Pub Date : 2020-01-23 , DOI: 10.1109/lmwc.2019.2963178
Hyunjin Ahn; Ilku Nam; Ockgoo Lee

Design equations for the parameters of a lumped-element quadrature coupler with impedance transforming are derived. Considering on-chip implementations, it has a smaller size as compared to a quarter-wavelength transmission-line-based coupler. A 2.47-GHz quadrature coupler with impedance transforming is implemented using GaAs technology for verification. The measurement results show that the fabricated coupler achieves an insertion loss of 3.39 dB with a phase imbalance of 0.8° for through and coupled outputs at 2.47 GHz.
更新日期:2020-02-14

 

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