Oscillator circuit

Details Oscillator circuit Oscillator circuit

1998-07-10

2000-10-17

Kinkead, Arnold

Oscillators

Automatic frequency stabilization using a phase or frequency...

Oscillator with distributed parameter-type discriminator

331 96, 331 37, 331108C, 331177V, 331 4, 331107DP, 331107G, 455318, 455323, 455325, 455330, 455126, H03B 714

Patent

active

061337951

ABSTRACT:
A stabilised voltage controlled oscillator circuit comprises a closed loop circuit containing a voltage controlled oscillator (34), a local oscillator (40) and a harmonic mixer (38) that mixes a stabilised local oscillator (LO) frequency signal and a radio frequency (RF) signal from the voltage controlled oscillator (34) to obtain an intermediate frequency (IF) signal. An IF amplifier (42) is connected to a linear frequency discriminator (44) that provides an output signal to a summing amplifier (46), which is connected to the voltage controlled oscillator (34). The closed loop circuit uses the linear frequency discriminator (44) to provide a feedback signal that stabilises the voltage controlled oscillator (34).

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