Title:
OUTPUT CIRCUIT OF POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2021/227419
Kind Code:
A1
Abstract:
An output circuit of a power amplifier, comprising: an output network connected to an active device. The output network comprising an impedance matching network and a bias balance network; the bias balance network is connected to an output end of an active device chip by means of a first bonding wire group; the impedance matching network is connected to the output end of the active device chip by means of a second bonding wire group; the bias balance network comprises a first grounding capacitor connected to a transmission line, and the first bonding wire group is connected to one end of the transmission line; an equivalent inductor between the output end of the active device chip and the first grounding capacitor and a drain-source parasitic capacitor of the active device constitute a first resonance loop. The transmission line, the bonding wire groups, and the drain-source parasitic capacitor of the active device form a resonance loop, thereby balancing the drain-source parasitic capacitor of the active device, reducing the number of elements of a matching network, and reducing the size space and the cost of an amplifier.
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Inventors:
ZHANG YONG (CN)
Application Number:
PCT/CN2020/129808
Publication Date:
November 18, 2021
Filing Date:
November 18, 2020
Export Citation:
Assignee:
INNOGRATION SUZHOU CO LTD (CN)
International Classes:
H03F3/20; H03F3/189
Foreign References:
| CN111510085A | 2020-08-07 | |||
| CN1623232A | 2005-06-01 | |||
| CN1701613A | 2005-11-23 | |||
| CN101562425A | 2009-10-21 | |||
| CN209913789U | 2020-01-07 | |||
| US20160013767A1 | 2016-01-14 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY LTD. (CN)
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