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Recent content by ajar2dtn

  1. A

    digitally controlled trimmer cap

    Try the Maxim device MAX1474 at **broken link removed**
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    LDMOS RF Power Amplifier Bias Controller

    You may well be right and it certainly would be cheaper. It think it would depend on how sensitive the required performance criteria are to bias drift. In my instance I am concerned at mantaining linearity over operating temperature and product life.
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    LDMOS RF Power Amplifier Bias Controller

    This article by Jed Rice might shed some light on your question Also see his other article at; **broken link removed**
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    LDMOS RF Power Amplifier Bias Controller

    I think the Maxim part is a good choice for a currently available part. I am designing it into a 400MHz PA for which the device will control the bias of the driver & final LDMOS devices. For this part you have to provide a separate current sense amplifier and voltage reference. I would have...
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    I want to find a Cartesian feedback linearization IC

    feedback linearization cartesian Hi again I know for sure CML are working on an IC. They just have not announced it yet. You need to contact them if you want more info on the device and their plans for release on the market. Added after 24 minutes: I have also seen previous press releases...
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    I want to find a Cartesian feedback linearization IC

    tetra cartesian feedback Try CML Microcircuits (UK), they are developing IC specifically for TETRA https://www.cmlmicro.com/
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    Network Analyzer data export

    Assuming that a full two port calibration was done you should be able to save the data file in Touchstone format (ie. file name ends with .s1 or .s2) which should account for any port extension or delay corrections made after calibration. To get Touchstone format you need go to the define disk...
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    1 to 5 power divider working in 3 GHz

    MINT project has moved Try **broken link removed** or search for MINTWeb on google
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    Does anyone have a tutorial for PIFA?

    Have a read of chapter three of Kin-Lu Wong's book, Compact and Broadband Microstrip Antennas which can be found at;
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    Marconi 2019 RF Signal Gen Service Manual

    marconi 2019a manual Does anybody know where I can get a service manual for Marconi Instruments 2019 RF signal generator or similar? Thanks
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    help to design for gsm 900 & 1800 range with gain of

    Re: PIFA antenna You can find some discussion of PIFA antennae (no design equations though) in chapter 3 of the ebook; Compact and Broadband Microstrip Antennas by KIN-LU WONG You can dowload the ebook from MCU fileman under the path, Home/eBookOld/RF design/Compact Aand Broadband Microstrip...
  12. A

    1 to 5 power divider working in 3 GHz

    Have a look at this project incorporating wideband Wilkinson. **broken link removed** Also has ADS files
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    antenna design which can show the radiation pattern

    Re: antenna design software The free 4nec2 software available at the following site might be what you are looking for; I believe it can also do the antennae types in which you are interested (look at the included examples in "patches" & "wlan" directories after install it)...
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    how to using ADS or other software to design a 3-dB coupler?

    Have a look at this design which includes ADS files for dowload. **broken link removed**
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    Using VNA for RF impedance and phase measurement

    Try this article on DIY VNA
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