FREQUENCY SYNTHESIZER Russian patent published in 1998 - IPC

FIELD: radio engineering. SUBSTANCE: frequency synthesizer has voltage-controlled generator 1, first frequency divider 2, first SSS-trigger 3, reference generator 4, second frequency divider 5, second SSS-trigger 6, first and second controlled switches 7 and 8, first and second resistors 9 and 10, N controlled switches 11, capacitor 12, filter 13, voltage follower 14, and low-pass filter 15. Compensation of leakage current of first controlled switch 7 using the p-channel field-effect transistor is performed by means of N controlled switches, each using the n-channel field-effect transistor. The above-indicated compensation stabilizes voltage across capacitor 12, which in its turn improves spectral clearness of frequency synthesizer output signal. EFFECT: more effective construction. 2 cl, 1 dwg