Adnan It's not difficult. Just use the LT5517 I/Q demodulator with a suitable 176-216MHz LO, which could be a simple AD9910 DDS. Demo boards for both of these are available from LT and AD, so you don't need to make a PCB. A MAR-6+ MMIC can be used as a low-noise amplifier in front of the LT5517 if you need more sensitivity. You will need a clock for the DDS; this can be a signal generator or a crystal controlled oscillator.
regards Grant. > Posted by: "Adnan Yusuf" [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED] > Re%3AActually%20the%20problem%20is> mail_adnan85 > <http://profiles.yahoo.com/mail_adnan85> > > > Sun Jul 22, 2007 12:55 pm (PST) > > Actually guys i am building the receiver portion only, could you > please please please tell me what i will have to do between my > antenna and adc. I will do the processing in computer. > > --- In [email protected] > <mailto:soft_radio%40yahoogroups.com>, "Transistor Toaster" > <[EMAIL PROTECTED]> wrote: > > > > Dan, > > Always fun to hear from you. I'm just wondering how does he plan > to go > > about it: switch detection, analog IQ downconverter? One design > > simplification would be not to do a one stage direct conversion. > > > > Frank > > > > > > On Wed, 18 Jul 2007 22:00:22 GMT, "[EMAIL PROTECTED]" > > <[EMAIL PROTECTED]> said: > > > Frank > > > > > > Well I was just thinking about how the S D R hardware runs out > of > > > gain up in the 30 MHz region. So this fellow will need more than > an > > > antenna for FM he is going to need pre amplification of some good > > > amount also. > > > > > > Dan > > > ka9rza > > > > > -- > > Transistor Toaster > > [EMAIL PROTECTED] >
