Reconfigurable broadband mixer with variable conversion gain

Summary form only given, as follows. A 2 to 10 GHz Gilbert-type mixer is reported in which the gate widths of the transistors in the RF stage are reconfigurable. The change in the total gate-width of the RF devices results in a variable conversion gain for the mixer. Measurements show the mixer can yield maximum conversion gain of 24 dB and a minimum of 9 dB. The measured IP1dB ranged from −19 dBm to −4 dBm and the IIP3 ranged from −12 dBm to +3.5 dBm. The chip was fabricated in 130 nm CMOS and the circuit core measures 0.19 mm².