H - Electricity – 03 – L
Patent
H - Electricity
03
L
331/10
H03L 7/18 (2006.01) H03L 7/187 (2006.01) H03L 7/197 (2006.01)
Patent
CA 1302523
ABSTRACT OF THE DISCLOSURE A frequency synthesizer with a voltage-controlled oscillator that can be tuned over its total frequency range in increments of a prescribed frequency range a frequency- dictating component and with a reference oscillator that emits a reference signal of a strictly prescribed frequency that is supplied in the form of an input signal to a comparator, to which is simultaneously supplied another input signal of a frequency that is a function of the frequency of the output signal from the voltage-controlled oscillator, the second input signal generating a fine-tuning signal in accordance with the difference between the frequencies or between the phases of the first and second input signals and the fine-tuning signal supplied to the voltage-controlled oscillator to fine-tune the frequency of its output signal to the level defined by the reference signal. The second input signal supplied to the comparator is generated by a variable frequency divider that is adjusted by means of a variable electronic setting component, to which the fine-tuning signal is supplied and which continues to vary the dividing factor of the frequency divider until the voltage of the fine-tuning signal assumes a defined level within a prescribed range of voltages that fine-tunes the frequency of the output signal from the voltage-controlled oscillator to the frequency of the second input signal multiplied by the dividing factor so obtained, whereby the frequency of the output signal is within the subsidiary frequency range prescribed by the grid and set at the frequency-dictating component.
570424
Fetherstonhaugh & Co.
Firma Wegmann & Co Gmbh
Weinzierl Franz
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