METHOD FOR DETERMINING LOAD CAPACITANCE OF AN OSCILLATOR CIRCUIT, OSCILLATOR CIRCUIT AND ELECTRONIC APPARATUS
It is an object of the present invention to provide a method for determining the load capacitance CL of an oscillator circuit having a low load capacitance. To attain the object, we provide a method for determining the load capacitance CL of an oscillator circuit, wherein, when a drive current and a load capacitance of the oscillator circuit with a negative resistance RL 1 are Ios 1 and CL 1 , respectively, a load capacitance CL 2 for changing the drive current of the oscillator circuit to Ios 2 (<Ios 1 ) is given by: CL 2 =CL 1 *(Ios 2 /Ios 1 ) 1/2 .
1 . A method for determining the load capacitance CL of an oscillator circuit,
wherein, when a drive current and a load capacitance of the oscillator circuit with a negative resistance RL 1 are Ios 1 and CL 1 , respectively, a load capacitance CL 2 for changing the drive current of the oscillator circuit to Ios 2 (<Ios 1 ) is given by:
CL 2 =CL 1*( Ios 2 /Ios 1) 1/2 .
2 . A method for determining the load capacitance CL of an oscillator circuit,
wherein, when a negative resistance and a load capacitance of the oscillator circuit with a drive current Ios 1 are RL 1 and CL 1 , respectively, a load capacitance CL 2 for changing the negative resistance of the oscillator circuit to RL 2 is given by:
CL 2 =CL 1*( RL 1 /RL 2) 1/2 .
3 . A method for determining the load capacitance CL of an oscillator circuit,
wherein a load capacitance CLn (n≧2) is determined with respect to a load capacitance CL 1 so that (CLn+1/CLn) 2 =α holds, where n is an integer greater than or equal to 1 and α is a safety coefficient (2 −1/2 ).
4 . An oscillator circuit, wherein the load capacitance CL of the oscillator circuit is designed using the method for determining the load capacitance CL of an oscillator circuit according to claim 1 .
5 . An electronic apparatus comprising the oscillator circuit according to claim 4 .