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Recent content by rittu

  1. R

    RF Mixer working mechanism

    Hi If I am correct, in multiplier mode the LO signals are sinusoids with amplitudes such that it can switch the transistors from sat to linear region. In this case only multiplication of the RF signal frequency and the LO frequency occurs. In the chopping mode the LO signals are square waves...
  2. R

    Looking for RF pads and ESD tutorials for RF application

    Re: RF pads and ESD Thanks a lot for your reply. Please do send me any documents you have regarding ESD protected pads. Also it would be great if I could get some readymade ESD protected pads from somewhere. Rittu
  3. R

    Looking for RF pads and ESD tutorials for RF application

    RF pads and ESD Hi I am designing an RF receiver in 0.25um TSMC CMOS process. Can someone suggest me some good pad and ESD design tutorial for RF(5GHz) application. Are there any freely downloadable pads and ESD protection circuits on the net. Thanks for your help Rittu
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    Doubts about LNA and mixer design for CMOS receiver circuit

    LNA and mixer design Hello, I am designing a CMOS receiver circuit. I have a few doubts regarding the LNA and mixer design. 1. In LNA design usually the cascode transistor's width is kept equal to the main transistor's width. this is done so that the source of the cascode transistor and the...
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    How to get 50ohm match at both frequencies in dual-band LNA?

    Dual-band LNA Thanks a lot for your replies. Can you please tell me more about HFSS. Also my IC has a requirement of 128 pins and QFN as far as I know offers only 75 pin packages. Is there any pasckage which is similar to QFN but has more number of pins. Also as the number of pins in the QFN...
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    How to get 50ohm match at both frequencies in dual-band LNA?

    Dual-band LNA Hello, I am working on a dual-band LNA. I have designed it for 802.11a(5.25GHz) and 802.11b(2.45GHz). This is a concurrent LNA which matches to 50 ohms at both 2.45GHz and 5.25GHz. The problem I am facing is that when I consider the pin parasitics of the package (TQFP) The...
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