Substrate Integrated Components for Passive Millimeterwave-Frequency Beamforming Networks

In this paper, we propose passive millimeterwave (mmWave) components for Butler matrix beamforming networks implemented in grounded-coplanar waveguide (GCPW) technology designed for integration and co-optimization with an antenna array operating in the 28 GHz 5G band. Within the frequency band of in...

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Bibliographic Details
Published in2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP) pp. 272 - 274
Main Authors Van Messem, Laura, Moerman, Arno, Caytan, Olivier, De Paula, Igor Lima, Hoflack, Bram, Stroobandt, Bram, Lemey, Sam, Rogier, Hendrik
Format Conference Proceeding
LanguageEnglish
Published IEEE 15.11.2021
Subjects
Array signal processing
Beamforming
Butler matrices
Conferences
Couplers
Crossover
GCPW
Hybrid coupler
Insertion loss
Loss measurement
mmWave
Multi-layer PCB
Waveguide components
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Summary:In this paper, we propose passive millimeterwave (mmWave) components for Butler matrix beamforming networks implemented in grounded-coplanar waveguide (GCPW) technology designed for integration and co-optimization with an antenna array operating in the 28 GHz 5G band. Within the frequency band of interest, covering the [26.5 GHz-29.5 GHz] spectrum, the insertion loss of the designed hybrid coupler and crossover stays well below 0.75 dB, while the amplitude imbalance remains below 0.5 dB and the phase imbalance does not exceed 5°.
DOI:10.1109/IMWS-AMP53428.2021.9644020