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Title:
DIFFERENTIAL POWER AMPLIFICATION CIRCUIT AND RADIO FREQUENCY CHIP
Document Type and Number:
WIPO Patent Application WO/2024/087846
Kind Code:
A1
Abstract:
A differential power amplification circuit (100) and a radio frequency chip. The differential power amplification circuit (100) comprises: a signal input end (1), an input matching circuit (2), a driving-stage power unit (3), a power difference unit (4), a last-stage power unit having a first last-stage power unit (5) and a second last-stage power unit (6) which are connected in parallel, a power synthesis unit (8), an output matching circuit (7), and a signal output end (9), which are connected in sequence. The differential power amplification circuit (100) further comprises a first capacitor (C01) and a second capacitor (C02), which form a cross-coupling capacitor group, wherein a first end of the first capacitor (C01) is connected to an input end of the first last-stage power unit (5), and a second end of the first capacitor (C01) is connected to an output end of the second last-stage power unit (6); and a first end of the second capacitor (C02) is connected to an input end of the second last-stage power unit (6), and a second end of the second capacitor (C02) is connected to an output end of the first last-stage power unit (5). The differential power amplification circuit (100) can improve both the gain of the radio frequency chip and the capability of suppressing second-order and third-order harmonics of a dominant frequency.

Inventors:
XU LIANG (CN)
GUO JIASHUAI (CN)
Application Number:
PCT/CN2023/114970
Publication Date:
May 02, 2024
Filing Date:
August 25, 2023
Export Citation:
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Assignee:
LANSUS TECH INC (CN)
International Classes:
H03F1/56
Foreign References:
CN115580245A2023-01-06
CN115580244A2023-01-06
CN112702029A2021-04-23
CN102412786A2012-04-11
CN106936393A2017-07-07
CN107786168A2018-03-09
CN108732569A2018-11-02
CN216451346U2022-05-06
JP2018160882A2018-10-11
US20130147445A12013-06-13
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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