Title:
FLIP-FLOP COMPLEMENTARY LOW-NOISE VOLTAGE-CONTROLLED OSCILLATOR CAPABLE OF REDUCING UP-CONVERSION OF FLICKER NOISE
Document Type and Number:
WIPO Patent Application WO/2023/221276
Kind Code:
A1
Abstract:
A flip-flop complementary low-noise voltage-controlled oscillator capable of reducing up-conversion of flicker noise. In the application of radar technology, the voltage/frequency gain of a voltage-controlled oscillator is too large, such that phase noise is affected by low-frequency noise. A flip-flop complementary structure and a tail inductor are provided, such that the voltage-controlled oscillator obtains larger transconductance, thereby suppressing noise, and realizing the function of reducing up-conversion of flicker noise. Compared with the traditional technique of using a single mutual-coupling pair, the flip-flop complementary structure reuses a current, such that the performance is improved and the overall power consumption is reduced, and the structure is simple. Compared with a traditional complementary structure, the flip-flop complementary structure reduces the up-conversion of the flicker noise of the voltage-controlled oscillator, thereby ameliorating the phase noise. On this basis, a circuit for generating an IQ orthogonal differential signal, and a flip-flop complementary low-noise voltage-controlled oscillator in the form of substrate injection and a corresponding circuit for generating an IQ orthogonal differential signal can further be provided.
Inventors:
XU ZHIWEI (CN)
LI QUANYONG (CN)
CHEN JIANGBO (CN)
DU LIKANG (CN)
WANG SHENGJIE (CN)
SONG CHUNYI (CN)
LI QUANYONG (CN)
CHEN JIANGBO (CN)
DU LIKANG (CN)
WANG SHENGJIE (CN)
SONG CHUNYI (CN)
Application Number:
PCT/CN2022/105179
Publication Date:
November 23, 2023
Filing Date:
July 12, 2022
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
H03B5/12
Foreign References:
| CN101183851A | 2008-05-21 | |||
| CN111541423A | 2020-08-14 | |||
| CN110661490A | 2020-01-07 | |||
| US20050046502A1 | 2005-03-03 | |||
| CN103078591A | 2013-05-01 | |||
| CN112234983A | 2021-01-15 | |||
| CN113676137A | 2021-11-19 | |||
| CN112653456A | 2021-04-13 | |||
| CN106921345A | 2017-07-04 |
Attorney, Agent or Firm:
HANGZHOU AOCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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