Cgs compensating V-band resistive mixer with low conversion loss at low LO power

Cgs compensating V-band resistive mixer with low conversion loss at low LO power

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A Cgs compensating resistive mixer with low conversion loss at a low LO power level is proposed. In the proposed mixer with an additional transistor, Cgs looking at the gate applying an LO signal is reduced by Cgd, Cgs, and Cds of the additional transistor. This enables the proposed resistive mixer to have low conversion loss at a low LO power level. This enables the circuit to have high LO-RF isolation and facilitates an RF and IF matching network design. The fabricated chip size using 0.13 µm CMOS technology is 0.71 × 0.69 mm2. It achieves a conversion loss of 6.2 to 9.7 dB at an RF frequency of 56 to 63 GHz, and an input P1dB of −2.5dBm at an LO power of 0dBm. This is believed to be the lowest conversion loss among V-band resistive mixers.


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