Passive Mixer with Guard Intervals of the Local Oscillator Signal and the Resonance Circuit of the Input Impedance

A generalized method for calculation of current-driven passive mixer with guard intervals of the local oscillator signal and the resonance circuit of the input impedance is presented in this paper. In practical mixer circuits, there is always an overlap of the pulses of the local oscillator signals due to a mismatch in the parameters of the circuit elements. The authors proposed during the absence of a signal, in the interval between local oscillator pulses, to introduce a guard interval, excluding the overlaps. The Micro-Cap is used to mimic the mixer circuit, and the output is compared to the computation. For different guard interval durations, the mixer's transfer impedance dependences are taken into account.