US 12,413,191 B2
Ka-band gallium-nitride (GaN) monolithic-microwave integrated circuit (MMIC) power amplifier circuit and amplifier
Pengbo Du, Hebei (CN); Yu Wang, Hebei (CN); Zhaotan Cui, Hebei (CN); Xuelong Jiao, Hebei (CN); Zhipeng Ren, Hebei (CN); and Hanbin Qu, Hebei (CN)
Assigned to North-China Integrated Circuit Co., Ltd., Hebei (CN)
Appl. No. 17/921,750
Filed by North-China Integrated Circuit Co., Ltd., Hebei (CN)
PCT Filed Jun. 14, 2022, PCT No. PCT/CN2022/098522
§ 371(c)(1), (2) Date Oct. 27, 2022,
PCT Pub. No. WO2023/065690, PCT Pub. Date Apr. 27, 2023.
Claims priority of application No. 202111222582.4 (CN), filed on Oct. 20, 2021.
Prior Publication US 2024/0267009 A1, Aug. 8, 2024
Int. Cl. H03F 3/191 (2006.01); H03F 1/56 (2006.01); H03F 3/24 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/56 (2013.01); H03F 2200/222 (2013.01); H03F 2200/451 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A Ka-band gallium-nitride (GaN) monolithic-microwave integrated circuit (MMIC) power amplifier circuit, comprising: a plurality of cascade-connected amplification modules, wherein a first amplification module comprises a first amplification unit, and each of all of the amplification modules except the first amplification module comprises a matching network unit and an amplification unit;
an input terminal of the first amplification unit, as an input terminal of the first amplification module, is configured to input a radio-frequency (RF) signal; and a current matching network unit comprises an input terminal connected to an output terminal of a front-stage amplification unit and an output terminal connected to an input terminal of a current amplification unit, an output terminal of the current amplification unit is connected to an input terminal of a matching network unit of a rear-stage amplification module, and an output terminal of a last amplification unit in a last amplification module, as an output terminal of the last amplification module, is configured to output the RF signal; and
the matching network unit comprises: a microstrip line ML1, a microstrip line ML2, and a capacitor C1; and the microstrip line ML1 comprises one terminal connected to the output terminal of the front-stage amplification unit and the other terminal connected to one terminal of the microstrip line ML2 and one terminal of the capacitor C1, the other terminal of the microstrip line ML2 is connected to the input terminal of the current amplification unit, and the other terminal of the capacitor C1 is grounded.