US 2003/0076178 A1Published application

Injection-locked high-frequency oscillator

AssigneeNihon Dempa Kogyo Co., Ltd.

InventorsMasayoshi Aikawa, Fumio Asamura, Takeo Oita

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Abstract

An injection-locked high-frequency oscillator has an annular transmission line, and m (m>1) units of oscillating amplifiers, and is provided with an oscillation closed loop formed with the transmission line and the oscillating amplifiers, the oscillating frequency thereof being determined by an electric length of line of the oscillation closed loop. When n≧1 is defined, and when the wavelength corresponding to the oscillating frequency is defined as λ, the electric line length from any one oscillating amplifier to the neighboring oscillating amplifier is set to be nλ by taking delay time due to the oscillating amplifiers into consideration, and further into in-phase points on the oscillation closed loop, synchronizing signals having, respectively, a frequency that is 1/mn of the oscillating frequency are injected.

Claims16

Dependent claims

An injection-locked high-frequency oscillator in which an oscillating frequency thereof is determined by an electric line length of an oscillation closed loop, said high-frequency oscillator comprising:

an annular transmission line;
m units of oscillating amplifiers disposed in said transmission line, m being defined as an integer larger than 1;
and
means for injecting synchronizing signals each having a frequency of 1/mn of said oscillating frequency into in-phase points in said oscillating closed loop, n being defined as a natural number;
wherein said transmission line and said oscillating amplifiers form said oscillation closed loop;
and
wherein when a wavelength corresponding to said oscillating frequency is defined as λ, an electric line length from any one of said oscillating amplifiers to a neighboring oscillating amplifier is set as nλ by taking into consideration a delay time due to said oscillating amplifiers.

4 more elements

Dependencies are inferred from the claim text.