Spurious Detection and Cancellation Method for Millimeter Wave Heterodyne Transceiver Architecture

textbfA simple detecting and controlling circuit to measure and cancel the spurious emission of the millimeter wave heterodyne transceiver architecture is presented. In Time Division Duplex system, the spurious detection and cancellation operate in the receive time frame to avoid the interference in transmission. The test setup along with the exemplary algorithm for adjusting the parameters have been built and demonstrated using commercial-off-the-shelf components. The LO leakage has been reduced by 18.56 dB and 28.61 dB in 28 GHz and 39 GHz bands respectively. The proposed method enables the broadband tunable transceiver designs for the use cases with less stringent emission requirements.