HARMONIC SUPPRESSION MATCHING CIRCUIT STRUCTURE SUITABLE FOR BALUN, AND POWER AMPLIFIER

WIPO Patent Application WO/2023/020098

A1

A harmonic suppression matching circuit structure suitable for a balun, and a power amplifier. The circuit structure comprises a balun (1), a first tuning unit (2), a second tuning unit (3), and a third tuning unit (4); the balun (1) comprises a primary coupling coil (N1), a first secondary coupling coil (N2), and a second secondary coupling coil (N3); the primary coupling coil (N1) is connected between an unbalanced signal port (T1) and a ground terminal; one end of the first secondary coupling coil (N2) is connected to a first balanced signal port (T2); one end of the second secondary coupling coil (N3) is connected to a second balanced signal port (T3); the connection point between the first secondary coupling coil (N2) and the second secondary coupling coil (N3) is connected to the ground terminal; the first tuning unit (2) is connected between the first balanced signal port (T2) and the ground terminal; the second tuning unit (3) is connected between the unbalanced signal port (T1) and the ground terminal; the third tuning unit (4) is connected between the second balanced signal port (T3) and the ground terminal. The high-order harmonic suppression capability of the balun can be effectively improved while maintaining good balance of the balun, thereby meeting requirements of 5G-NR systems.

ZHAO GANG (CN)
LONG HUA (CN)

PCT/CN2022/099451

February 23, 2023

June 17, 2022

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LANSUS TECH INC (CN)

H03F1/56; H03F3/195; H03F3/213

CN215912076U	2022-02-25
CN102113212A	2011-06-29
US20050208901A1	2005-09-22
US20050206471A1	2005-09-22
CN106330128A	2017-01-11

SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)

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