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2015-12-01
A Novel Dual-Band Balanced Power Amplifier Using Branch-Line Couplers with Four Arbitrary Terminated Resistances
By
Progress In Electromagnetics Research C, Vol. 60, 67-74, 2015
Abstract
A novel dual-band balanced power amplifier (DBPA) using a pair of branch-line couplers with four arbitrary terminated resistances is designed in this paper. The DBPA operating at 2.02 GHz and 2.6 GHz consists of two identical single-stage class-AB PAs connected in parallel and two branch-line couplers for power division and combination. Due to the usage of branch-line couplers with four arbitrary terminated resistances, the load/source-pull impedance obtained by ADS (Advanced Design System) can be matched to an arbitrary real impedance which decreases the complexity of dual-band matching network of the DBPA. To demonstrate the proposed design, a prototype based on CREE's GaN HEMT CGH40010F is fabricated and measured. The simulated results exhibit 67.9% and 73.6% power-added efficiency (PAE) values with output power of 44.1 and 43.4 dBm at 2.02 GHz and 2.6 GHz, respectively.
Citation
Hua Wang, Bihua Tang, Yongle Wu, Cuiping Yu, and Yuan'an Liu, "A Novel Dual-Band Balanced Power Amplifier Using Branch-Line Couplers with Four Arbitrary Terminated Resistances," Progress In Electromagnetics Research C, Vol. 60, 67-74, 2015.
doi:10.2528/PIERC15103001
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