Title:
MULTI-FREQUENCY LOW NOISE AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2022/174631
Kind Code:
A1
Abstract:
The present application provides a multi-frequency low noise amplifier, comprising: an input matching network, an amplifier tube and an output matching network; the input matching network comprises a first out-of-band suppression circuit and a first frequency band selection circuit; the output matching network comprises a second out-of-band suppression circuit and a second frequency band selection circuit; the first out-of-band suppression circuit can suppress a signal of any frequency band in radio frequency signals and allow signals of the remaining frequency bands to pass through; the first frequency band selection circuit can obtain, by screening, signals of reference frequency points from the remaining frequency bands; the second frequency band selection circuit can obtain, by screening, signals of some of the frequency points from the amplified signals of the reference frequency points; and the second out-of-band suppression circuit can suppress a signal of any frequency point in the signals of some of the frequency points, so that the multi-frequency low noise amplifier outputs signals of target frequency points.
Inventors:
HE MINJUN (CN)
ZHENG YAOHUA (CN)
ZHENG YAOHUA (CN)
Application Number:
PCT/CN2021/131169
Publication Date:
August 25, 2022
Filing Date:
November 17, 2021
Export Citation:
Assignee:
SMARTER MICROELECTRONICS GUANG ZHOU CO LTD (CN)
International Classes:
H03F3/19; H03F1/56
Domestic Patent References:
| WO2006047294A1 | 2006-05-04 |
Foreign References:
| CN112564645A | 2021-03-26 | |||
| CN104035105A | 2014-09-10 | |||
| CN105210291A | 2015-12-30 | |||
| US20180248526A1 | 2018-08-30 | |||
| CN203930070U | 2014-11-05 | |||
| CN1797939A | 2006-07-05 | |||
| CN105141263A | 2015-12-09 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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