US 11,929,585 B2
Mixer-based microwave signal generation device
Ming Li, Beijing (CN); Tengfei Hao, Beijing (CN); Qizhuang Cen, Beijing (CN); Yitang Dai, Beijing (CN); Nuannuan Shi, Beijing (CN); and Wei Li, Beijing (CN)
Assigned to INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES, Beijing (CN)
Filed by INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES, Beijing (CN)
Filed on Sep. 29, 2021, as Appl. No. 17/449,295.
Claims priority of application No. 202011307612.7 (CN), filed on Nov. 19, 2020.
Prior Publication US 2022/0158400 A1, May 19, 2022
Int. Cl. H01S 1/00 (2006.01); G01S 7/32 (2006.01)
CPC H01S 1/00 (2013.01) [G01S 7/32 (2013.01)] 11 Claims
OG exemplary drawing
 
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.