A DC-to-12 GHz 1.4-2.5 dB IL 4x8 Switch Matrix with Three-Port Reconfigurable Inter-Stage Matching Network
2023 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS SYMPOSIUM, RFIC(2023)
Abstract
An ultra-wideband low insertion loss (IL) reconfigurable 4x8 switch matrix is proposed in this paper. With the proposed three-port reconfigurable inter-stage matching network and symmetrically-routed structure, the switch matrix breaks the limits between bandwidth (BW), IL, and the number of branches. The proposed switch matrix is fabricated in a commercial 0.25-mu m GaN HEMT process and achieves a favourable IL of 1.4-2.5 dB over DC-to-12 GHz. The switch matrix is operated in dual-band mode. In low-band mode (DC-to-5 GHz), isolation is higher than 35 dB and input 1-dB compression is higher than 40.3 dBm; in high-band mode (4-to-12 GHz), isolation is higher than 28 dB and input 1-dB compression is higher than 35 dBm. The core area is 1.5x1.6 mm(2).
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Key words
reconfigurable architectures,switches,ultra-wideband technology
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