TY - JOUR
T1 - Design and Experiments of a 160–200-GHz Broadband Quasi-Optical Schottky Subharmonic Mixer
AU - Tan, Zhen
AU - Hu, Weidong
AU - Zhang, Binchao
AU - Jiang, Huanyu
AU - Zhang, Kaiqi
AU - Yan, Yuxi
AU - Rastinasab, Vahid
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2025
Y1 - 2025
N2 - This article presents a system design methodology and experimental validation of a 160–200-GHz broadband quasi-optical Schottky subharmonic mixer. To enhance the operating bandwidth, an on-chip local oscillator (LO) U-slot antenna for receiving the LO pumping signal and a radio frequency (RF) dual-patch antenna for receiving the RF signal are designed. Moreover, the LO and RF antennas are mounted on the front and back sides of the device, respectively. This arrangement simplifies the quasi-optical configuration. To improve integration and increase the isolation between the LO and intermediate frequency (IF) signals, a compact microstrip resonant cell (CMRC)-based low-pass filter (LPF) is incorporated. In addition, Huygens’ metalens is designed on a single substrate with only two metallic layers to converge the beam and increase the gain of the LO and RF antennas. Within the operating frequency range of 160–200-GHz, the measured single-sideband conversion loss ranges from 10.9 to 13.2dB.
AB - This article presents a system design methodology and experimental validation of a 160–200-GHz broadband quasi-optical Schottky subharmonic mixer. To enhance the operating bandwidth, an on-chip local oscillator (LO) U-slot antenna for receiving the LO pumping signal and a radio frequency (RF) dual-patch antenna for receiving the RF signal are designed. Moreover, the LO and RF antennas are mounted on the front and back sides of the device, respectively. This arrangement simplifies the quasi-optical configuration. To improve integration and increase the isolation between the LO and intermediate frequency (IF) signals, a compact microstrip resonant cell (CMRC)-based low-pass filter (LPF) is incorporated. In addition, Huygens’ metalens is designed on a single substrate with only two metallic layers to converge the beam and increase the gain of the LO and RF antennas. Within the operating frequency range of 160–200-GHz, the measured single-sideband conversion loss ranges from 10.9 to 13.2dB.
KW - Broadband receiver
KW - Schottky subharmonic receiver
KW - integrated metalens antenna
KW - quasi-optical receiver
KW - terahertz (THz) imaging
UR - https://www.scopus.com/pages/publications/105024454140
U2 - 10.1109/TMTT.2025.3635732
DO - 10.1109/TMTT.2025.3635732
M3 - Article
AN - SCOPUS:105024454140
SN - 0018-9480
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
ER -