The easiest way to generate harmonics would be to hook up a pair of
Schottky low capacitance (usually also low breakdown voltage) diodes in an
antiparallel arrangement, and then connect the pair either shunting the RF
signal, or in series with the RF signal. One way may be more successful
than the other depending mostly on drive level.
There will be a lot of loss, probably on the order of 20 dB. But it doesn't
sound like you need a lot of signal.
Don Borowski
Schweitzer Engineering Labs
Pullman, WA
richwoods@tycoint
.com
Sent by: To
owner-emc-pstc@ma [email protected]
jordomo.ieee.org cc
Subject
08/29/03 11:40 AM Extending Freq Range of Sig Gen
Please respond to
richwoods@tycoint
.com
I need to characterize a filter up to 10 GHz, but my signal generator has a
top end of 4 GHz. Is there a simple means of generating a third harmonic
>from a signal generator while maintaining a 50 ohm source impedance? My
thinking is that a diode circuit should be able to create the harmonics and
then follow that circuit up with a 3-6 dB pad to maintain the source
impedance. Am I on the right track? Any circuit and component suggestions
would be appreciated.
Richard Woods
Sensormatic Electronics
Tyco International
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