Patent ID: 11929585
Assignee: INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A mixer-based microwave signal generation device, comprising:
a microwave local oscillator source configured to generate a local oscillator microwave signal;
a mixer configured to perform a frequency conversion on a microwave signal generated by a self-excited oscillation of a closed optoelectronic feedback loop of the device under an excitation of the local oscillator microwave signal, and output a single-mode or multi-mode oscillator microwave signal;
a first filter configured to filter the single-mode or multi-mode oscillator microwave signal, so as to obtain a single-mode or multi-mode self-excited oscillator signal;
a laser configured to generate an optical carrier;
an electro-optic modulator configured to load the single-mode or multi-mode self-excited oscillator signal onto the optical carrier, so as to obtain an optical signal;
an optical signal delayer configured to delay the optical signal;
a photodetector configured to perform a beat frequency restoration on the optical signal delayed, so as to obtain a microwave signal;
a second filter configured to filter the microwave signal so as to obtain a delayed single-mode or multi-mode oscillator microwave signal;
an amplifier configured to amplify a power of the delayed single-mode or multi-mode oscillator microwave signal; and
a passive power divider configured to perform a power distribution on the delayed single-mode or multi-mode oscillator microwave signal with the amplified power so as to obtain two groups of microwave signals, input one of the two groups of microwave signals to the mixer for a next cycle, and output another one of the two groups of microwave signals, wherein each of the two groups of microwave signals comprises the delayed single-mode or multi-mode oscillator microwave signal with the amplified power halved.