A sub-harmonic mixer(SHM)covering the full F-band(90-140 GHz)was developed for broadband and low-loss applications.The SHM was designed using a domestic discrete Schottky diode and a waveguide-quartz hybrid integrated circuit process.The mixing circuit elements such as coupling probes and a compact filtering involved in the circuit structure were integrated on a single 127-pm-thick quartz substrate.By designing a highly robust direct current grounding structure and a compact resonant filter unit,a compact and broadband mixing performance on the entire quartz substrate was achieved.The measurement result shows that a single sideband(SSB)conversion loss of 12-16 dB can be achieved in the 90-140 GHz band under the drive of a 12 dBm LO power.The LO and IF operating ranges are 45-70 GHz and DC-15 GHz,respectively.This SHM can be used in the extended spectrum measurement system.
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维普
