aryajur
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I am trying to design a Single Balanced CMOS mixer. How can I increase the conversion gain of the mixer?? In RF Microelectronics by Razavi he says to increase the width of the switching transistors but that decreases my conversion gain. While increasing the width I decreased the biasing to keep the tail current constant but it still didn't work.
Please suggest how to get my gain up or any resources where I can find some design tips.
Also if I run a transient analysis, what should be the waveforms I should expect to see. My LO is 1.7GHz and RF is 1.8GHz. I use a tail transistor which convertes the RF signal to current and feeds it to the tail current of the Single Balanced mixer. If I check the waveform at the RF input node I am getting mixing at that node ! I get a modulated signal with a frequency of nearly 1.7GHz and a modulation frequency which is close to IF of 100MHz.
Please suggest how to get my gain up or any resources where I can find some design tips.
Also if I run a transient analysis, what should be the waveforms I should expect to see. My LO is 1.7GHz and RF is 1.8GHz. I use a tail transistor which convertes the RF signal to current and feeds it to the tail current of the Single Balanced mixer. If I check the waveform at the RF input node I am getting mixing at that node ! I get a modulated signal with a frequency of nearly 1.7GHz and a modulation frequency which is close to IF of 100MHz.
