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Recent content by adolfchen

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    How to import *.hkp by WG2004?

    import hkp I have a layout file (powerpcb format). I need to translator the layout file to expedition file (WG2004). I use pads2004 to export *.hkp. But I don’t know how to import the *.hkp by WG2004. Who can tell me how to import *.hkp by WG2004? Thank you!
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    How to convert WG2004 to PADS?

    Are you sure that PADS can import the WG2004's asscii format (*.hkp)?
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    How to convert WG2004 to PADS?

    Hi, Does anybody know how to convert WG2004 file to PADS file? Thanks
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    [REQ] EN2004 : How to setup printer?

    I use EN2004. When I setup the printer, EN2004 only has NT printer. It only prints A4 size sheet. Now I want to print A3 size sheet. How to add more printer? How to print different size sheet?
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    How can I test a FM module?

    How to test FM ? I got a FM module. I need to test it. But I don't how to test. How many testing items do I need to test? How to test it? Who know that? Please help me? Thank you!
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    looking for EMC tutorial or information

    You can find some EMC e-book from web. Please search.
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    is there a tool to design RF circuits?

    You can use powerpcb and RFKit to layout the RF circuit. Then use aplac to simulation. Aplac can import powerpcb file.
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    RF power measurement in air

    You shall use a horn antenna and spectrum to measore the RF signal. Don't forget to calculate the pathloss, connector loss and cable loss. Then you can get a rough value.
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    Help needed for RF PCB design

    On 5G, Use socket? It is not a good idea. Maybe you should solder VCO on PCB.
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    Question about microstrip line width and impedance match.

    If your circuit input and output impedance is 50 ohm and S11,S21,S31 conform to your requests, you only make one and measure it. Maybe you need to turn it.
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    PA not work when ANT switch connected?

    You should check the match first. To study the antenna switch data sheet. Check antenna switch input impedance. And check your PA impedance. Maybe you need a match circuit.
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    What is the different GMSK and GFSK?

    what is gfsk? Reference : **broken link removed**
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    how to converter powerPCB's layout file to GDS file format.

    **broken link removed**
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    Recover OrCAD schematic

    schematic compare orcad I have allegro .brd file and a .pdf schematic. I want recover the orcad schematic. Both orcad netlist and allegro netlist must be the same. Who have good idea? Please help me. Thanks in advance.
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    CST Design Studio 2 Invalid password. (Code 106)

    CST Design Studio 2 I've installed CST Design Studio 2 but when to startup, it display a error message "Invalid password. (Code 106)" What it mean? But it still can use.
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