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Subject: Re: QPSK modem design (Using Pspice)

Date: 03/01/03 at 11:46 PM
Posted by: suojiangbo
E-mail: wolfinsnows@sohu.com
Message Posted:

In Reply to: QPSK modem design (Using Pspice) posted by Topz on 10/12/02 at 5:32 AM:

I am glad to see you using rf2713. I use it too. But it do not work well. I input its LO is 140MHZ and Vpp about 0.8v ,the IF expected is 70MHZ QPSK signal, the baseband is 5MHZ its Vpp is0.6v, I used it according to the PDF file .the Vcc is 3v,
I do not know why it not work. if you have some advice to me, please email to me. thank you very much.


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