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Recent content by sylvia24

  1. S

    Radio stations frequencies

    Hello, I am wondering why one radio station is on different frequencies in different cities in the same state? Can someone please explain it? Thanks!
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    Question about varactor (VCO design)

    Hi, I’m reading materials about VCO design for reference, and in one of them there is something I can’t understand: “Substituting this result gives Cv = 675fF. Because the varactor is in series with a 5pF AC coupling MIM capacitor, its actual value should beincreased to about 790fF.” Why...
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    Help with VCO Design

    Thank you very much Brian, BradtheRad and kenambo !
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    Help with VCO Design

    Hi, I have a project to design a VCO which i have difficulties with. Could someone please help me out? I have the following specifications: band: 1430 to 2230 MHz comparison frequency: 7.8125 kHz VCO output power: 10 mW I don't know how to find the value of the needed varactors and the...

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