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Recent content by freetofree

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    network 2 port calibration

    Hello, I have right angle placed two probes. I can find open, short, load standards but not through standard. Can I manually create a right angle wire that can connect the two probes? Does it affect the calibration accuracy?
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    power amplifier measurement

    should we use spectrum anlyzer to measure the output power, gain or should we use power sensor, power meter to measure the output power. How to measure DC power to calculate pAE
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    any tools can obtain 5 port s parameters from only 2 port

    Re: any tools can obtain 5 port s parameters from only 2 por Is it possible to do it when the other ports are left open? It is impossible for my on chip circuit to match all the other ports when measuring.
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    any tools can obtain 5 port s parameters from only 2 port

    I have only 2 port VNA and can measure 2 port S parameters. Any tools like ADS etc can convert multiple 2 port files into 5 port S parameters? Thank you.
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    how to test the nosie figure for 60G input 12G output

    we have the frone end, HP8970b. how do we measure it? anyone knows where to get the v band noise source or how to setup the ENR for 60G input?
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    anyone knows how to do noise measurement of 60GHz LNA

    the available noise source maximum frequency is only several GHz. I heard we can use mixer. But how? Anyone knows?
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    ads transient simulation problems

    Hi All, I installed ads 2008. However, I find I cannot do transient simulation. But it can do the frequency simulation. anyone can help?
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    how to calculate vertex point of octagon spiral inductor

    how to calculate a octagon Hi , I want to design a octagon spiral inductor in HFSS. However, I don't know how to calculate the points and how to draw the lines. Anyone can help?
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    hfss problem: no tetra at surface

    Hi I'm beginning to learn HFSS. When trying to simulate the example spiral inductor in HFSS10, some errors occur. Anyone can help? What's wrong and How to fix it?
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    help: how to install asitic?

    I encouter some problems when using asitic. I downloaded asitic_linux version and common files from the website and decompress them. When type file asitic_linux, it shows: ELF 32-bit LSB executable 80386 Version 1, dynamically linked, stripped Then I type echo $ path, and copy the file...
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    A. M. Dan, “Identification of Flicker Sources

    Re: need help for paper here it is
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    confusions on lna matching problem

    noise impedance mathcing is different from power matching. If it is designed for noise matching, then if the input network resonates, then gain can still be improved because it is QGmVin
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    Planar Microwave Engineering : A Practical guide to theory,

    Planar microwave engineering : a practical guide to theory, measurement, and circuits by tom lee, is this book good?
  14. F

    I am looking for a good smith chart tool.

    smith chart v2.02 this one
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    how to adjust the circuit?

    .title simulation of ota .prot .model nm nmos level = 49 + version = 3.11 acm = 3 hdif = 0.5e-6 + mobmod = 1.000000e+00 capmod = 1.000000e+00 nqsmod = 0.000000e+00 + tox = 6.500000e-09 cdsc = 1.000000e-10 cdscb = 0.000000e+00 + cdscd =...

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