LOW VOLTAGE VCO WITH DIFFERENTIAL CONTROL VOLTAGE FOR WIDEBAND TUNING
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2001-Nov-08
Normally in a wideband VCO, in order to keep the oscillator noise to a reasonable level, the gain (MHz/V) of the VCO must be kept within reasonable value consistent with the hum and noise performance. In order to achieve that, the available tuning voltage must be as large as possible. This can be achieved by either a large positive control voltage and or by using a negative voltage convertor which has to be programmable as the fre- quency selection is made.