Design of a Ka-band MMIC Lange coupler

Meng Zhou; Wei Wang; Yuzheng Li

doi:10.1117/12.2574972

10 October 2020 Design of a Ka-band MMIC Lange coupler

Meng Zhou, Wei Wang, Yuzheng Li

Proceedings Volume 11547, Optoelectronic Devices and Integration IX; 115471K (2020) https://doi.org/10.1117/12.2574972
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

A Lange coupler with a Ka-band (26.5~40 GHz) had been designed in a 0.15 μm GaAs MMIC technology. The coupler uses λ/4 wavelength lines as the coupling lines. The coupler was realized and measured by using 50 Ω resistors as terminations. The test results of the coupler within 26.5~40 GHz frequency range as follows: the coupling degree -3.2dB at the center frequency of 33GHz, insertion loss < 3.5 dB, return loss and isolation both less than -20 dB, amplitude imbalance less than 0.06 dB, phase imbalance less than 1°. The proposed Lange coupler has extremely wide application scenarios in MMIC circuits such as Ka-band power amplifiers, mixers, and phase shifters and so on.

Conference Presentation

Citation Download Citation

Meng Zhou, Wei Wang, and Yuzheng Li "Design of a Ka-band MMIC Lange coupler", Proc. SPIE 11547, Optoelectronic Devices and Integration IX, 115471K (10 October 2020); https://doi.org/10.1117/12.2574972

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