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Traditional Gilbert cell has been widely used in many mixer circuits, this paper designed a down-conversion mixer which concludes class AB transconductor to improve linearity and LC tank to decrease voltage supply. The RF, LO and IF port frequencies are 2.4 GHz, 2.3 GHz and 100 MHz, respectively. With SMIC 0.18 um process, simulation results show -8dBm of P-ldB compression point and 5 dBm of IIP3...
Based on traditional Gilbert Cell prototype, a 5.8 GHz down-conversion mixer which conclude CMOS gm Cell and LC tank is demonstrated in this paper. The RF, LO and IF port frequencies are 5.8 GHz, 5.75 GHz and 50 MHz, respectively. With SMIC 0.18 um process, simulation results show 3.2dB of conversion gain,-0.8dBm of P-1dB compression point and 7.9 dBm of IIP3 with -5dBm LO power and 1.2 V supply voltage.
A single resistor was used between the drain node of the bias transistor and the source node of the differential transistors. The wide-band nature of resistance can suppress the 2nd harmonic as well as other even harmonics leaking from the LC tank across the full period of oscillation. A fully integrated 2.4 GHz all PMOS LC VCO was implemented in a 0.35 mum CMOS process. The simulation results show...
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