2026-10-11T16:02:57Z https://www.scidb.cn/oai

10.57760/sciencedb.011wf 2026-09-10T14:05:17Z

2026-09-10 A Wideband InP 2:1 Analog Multiplexer with Active Feedback Matching and Switched-Diode Core doi:10.57760/sciencedb.011wf en This work presents a 52-GS/s wideband 2:1 analog multiplexer (AMUX) in a 0.8-um indium phosphide (InP) double-heterojunction bipolar transistor (DHBT) process. An active feedback input buffer is introduced to compensate for parasitic capacitance, achieving broadband impedance matching and extending the bandwidth (BW) of the input stage. Furthermore, a base-collector-shorted (b-c-shorted) diode topology is utilized as the switching element to enhance sampling rate. The measured AMUX exhibits a 0.21-fT BW from DC to 34.3 GHz and a mixed-mode input reflection coefficient Sdd11 better than -14.4 dB up to 50 GHz. Large-signal measurements demonstrate clear operation at a sampling rate up to 52 GS/s. The AMUX consumes 659 mW, which is comparatively low among reported designs. Analog multiplexer(AMUX); Indium phosphide(InP); Double-heterojunction bipolar transistor (DHBT); Active feedback matching; Digital-to-analog converter(DAC) Zhang Yongxin Xu Yifei Li Yaohua Feng Ke Lv Mingyang Yang Feng Su Yongbo Kim Ji RESTRICTED dataset Science Data Bank