feed your signal into a 3dB power divider. using a piece of coax ( or similar) run one side of the power divider output directly into a correlator, run the other side of the power divider to the correlator through a slightly longer piece of coax.
take the I and Q signals from the correlator and note the angle at the lowest input frequency and the highest input frequency. insert the unknown frequency into the power divider input and you can see on the I and Q signals where the frequency lies relative to the Fmin and Fmax. of course, the unknown must always be between Fmin and Fmax to avoid ambiguity. phil AB2JL. ----- Original Message ----- From: "Army Curtis - AE5P" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, January 17, 2007 5:07 PM Subject: [Flexradio] OT: measuring power and frequency above 1GHz? > Considering the considerable talent on this list, I'm looking for thoughts > on how to best measure frequency and power above 1GHz. Would like the > ability to measure from very low levels (-20dBm) to above +50dBm. A > calibrated signal source of some kind would be very handy also. What I'm > trying to do is set up a series of transverters through at least 3456MHz. > I > understand power meters are available that measure fairly low levels with > acceptable accuracy, and then use directional couplers and/or attenuators > to > reach higher levels. What type of instruments are recommended from the > used > market? Links to web sites that discuss this type of thing? > > > 73, > Army Curtis - AE5P > Nacogdoches, the oldest town in Texas > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.432 / Virus Database: 268.16.13/632 - Release Date: 1/16/2007 > 4:36 PM > > > > _______________________________________________ > FlexRadio mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com/ > > FlexRadio Knowledge Base: http://kb.flex-radio.com/ _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
