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A Tunable 220 GHz Comb Generator Realized with an Ultrawideband Mixer in a InP HBT Technology



Jerome Cheron, Rob Jones, Dylan Williams, Peter Aaen


We present a new millimeter-wave electrical comb generator with frequency-adjustable tone spacing and a tunable RF center frequency. We use an ultrawideband mixer based on a Gilbert cell topology to upconvert the spectrum of a series of repetitive pulses. The upconverter's local-oscillator frequency sets the center of the RF band while the CW signal driving the pulse generator defines the tone spacing of the comb. We demonstrate a stable electrical comb from 140 GHz to 220 GHz, with a 500 MHz and 2 GHz frequency spacing. This up-converted comb can be used as a phase reference at millimeter-wave frequencies.
IEEE Microwave and Wireless Technology Letters


Comb generator, millimeter-wave, monolithic microwave integrated-circuit (MMIC), ultrawideband mixer, on-wafer calibration.


Cheron, J. , Jones, R. , Williams, D. and Aaen, P. (2023), A Tunable 220 GHz Comb Generator Realized with an Ultrawideband Mixer in a InP HBT Technology, IEEE Microwave and Wireless Technology Letters, [online],, (Accessed May 20, 2024)


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Created September 9, 2023, Updated October 11, 2023