A downconverting second harmonic self-oscillating mixer (SOM) is developed for low-cost wireless communications applications.\r\nIncorporating resonant cell in the SOM, we can provide suitable oscillation for generating LO and terminations to all major\r\nunwanted mixing products, leading to high conversion gain design. The proposed SOM was measured with 8.5 dB downconversion\r\ngain at the RF frequency of 8.2 GHz RF, LO frequency of 4.0 GHz, and IF frequency of 0.2 GHz. The proposed design achieves\r\nhigher conversion gain than that of the SOM without resonant cell.
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