Sheng-Yu RAO, Chun-Qi SHI, Run-Xi ZHANG. A CMOS millimetre wave down-conversion mixer for 76-81 GHz automotive radars [J]. Journal of Infrared and Millimeter Waves, 2020, 39(4): 441
- Journal of Infrared and Millimeter Waves
- Vol. 39, Issue 4, 441 (2020)
Fig. 1. Block diagram of the proposed 76～81 GHz quadrature transceiver
Fig. 2. （a） Schematic of the pre-amplifier with a transformer-based gm-boosted network and output power divider, （b） 3D view of the input transformer, and （c） 3D view of the output power divider.
Fig. 3. Simulated results of the gm-boosted single-stage CS amplifier
Fig. 4. （a） Inter-stage serial inductance network, （b） Inter-stage serial-parallel resonating network, and （c） The proposed LC resonating network
Fig. 5. Simulated results of the inter-stage parasitic capacitance elimination network
Fig. 6. （a） The schematic of proposed active mixer, （b） equivalent model of active mixer inter-stage impedance, and （c） noise model of active mixer and the schematic of dynamic current-bleeding.
Fig. 7. Simulated conversion gain of the active mixer using various architectures
Fig. 8. Chip photograph
Fig. 9. Measured S11 of the down-conversion mixer
Fig. 10. Measured CG of the down-conversion mixer
Fig. 11. Measured input P1dB of the down-conversion mixer
Fig. 12. Measured noise figure of the down-conversion mixer
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Table 1. 本文正交下混频器测试性能总结及与已报道混频器的性能对比（25 ℃）
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