mandar999
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Hi,
I am designing a receiver and need to find out total output noise in the bandwidth of interest. The structure of the receiver is as given below, - Gm-Stage - Passive mixer for downconversion (LO - 1.1GHz, BW - 1GHz) - Active integrator structure to provide built in sinc anti-aliasing filter - the integrating caps are discharge after a certain time window. no feedback resistor. - two integrators working in different phases and interleaved output
I am having certain problems while doing Pxf and Pnoise simulations,
(1) Without the mixer, I do get the expected sinc response in Pxf analyis with the appropriate DC gain. When I put the mixer, there is a lot of attenuation in the gain.
(2) There is a peak in the PNoise analysis, output noise plot at 1GHz
Please help me in regards to this issue. [b][/b]
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