UHF (Ultra High Frequency) Electronic Circuits


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UHF (Ultra High Frequency) Circuits
Last Updated on: Friday, August 29, 2008 02:34 PM

Circuits Designed by Dave Johnson, P.E. :

200MHz400MHz VOLTAGE controlled OSCILLATOR
If you need a clean emitter coupled logic (ECL) type signal between 200MHz and 400MHz this circuit works fine. It uses four voltage-controlled capacitors to change the frequency.

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

2 Stage Chaotic Colpitts Oscillator for the UHF range: (added 2/05)

CMOS Inverter VCO tunes octave to UHF: 11/19/98 EDN-Design Ideas / (Electronic Circuit diagram added 03/03)

Rolling code 4-channel UHF remote Control: (Electronic circuit added 4/05)

Two Stage Chaotic Colpitts Oscillator for the UHF range: (added 2/05)

UHF TV PreAmplifier: (Electronic Schematic / circuit added 4/02)

UHF: 100W Transistorized Amplifier: (Electronic circuit added 4/05)

Versatile Hybrid Synthesizer for UHF and Microwave Projects: Controlled by the PC parallel port, this hybrid DDS/PLL synthesizer delivers full-octave coverage between 1000 and 2000 MHz with sub-1 Hz resolution and commercial-quality phase-noise performance. (Circuit / schematic design added 6/06)