milvapp
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I have designed a single-balanced passive mixer having an ideal current source
as input.After the switches,as seen in Fig.1,there are LPF's with a cut-off
frequency of 10 MHz.I get the expected output however I cannot understand
why when I plot the input gain,its form is like the one shown in Fig.2 .Shouldnt it
be the similar to the LPF? (I run PSS/PAC analysis to get the results).
Fig.1![passive mixer.JPG passive mixer.JPG](https://www.edaboard.com/data/attachments/26/26725-8e1d0464a860a23dc079f8ee471548ca.jpg)
Fig.2![input gain.JPG input gain.JPG](https://www.edaboard.com/data/attachments/26/26726-99cf2b455a7501c99d58127fb06ae08e.jpg)
as input.After the switches,as seen in Fig.1,there are LPF's with a cut-off
frequency of 10 MHz.I get the expected output however I cannot understand
why when I plot the input gain,its form is like the one shown in Fig.2 .Shouldnt it
be the similar to the LPF? (I run PSS/PAC analysis to get the results).
Fig.1
![passive mixer.JPG passive mixer.JPG](https://www.edaboard.com/data/attachments/26/26725-8e1d0464a860a23dc079f8ee471548ca.jpg)
Fig.2
![input gain.JPG input gain.JPG](https://www.edaboard.com/data/attachments/26/26726-99cf2b455a7501c99d58127fb06ae08e.jpg)