Dual-Band Continuous Class-F-1 Power Amplifier With Second-Harmonic Suppression for Harmonic Radar Systemsopen access
- Authors
- Kim, Bitchan; Oh, Juntaek
- Issue Date
- Apr-2024
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Continuous inverse class-F; dual-band; high-efficiency; harmonic radar system; harmonic suppression; power amplifier
- Citation
- IEEE ACCESS, v.12, pp 62358 - 62364
- Pages
- 7
- Journal Title
- IEEE ACCESS
- Volume
- 12
- Start Page
- 62358
- End Page
- 62364
- URI
- https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49882
- DOI
- 10.1109/ACCESS.2024.3395518
- ISSN
- 2169-3536
- Abstract
- In this study, a highly efficient harmonic suppressed dual-band power amplifier (PA) for harmonic radar systems is proposed. The proposed PA incorporates a harmonic-controlled dual-band matching network (HCDMN) comprising lambda/4 open stubs at the second-harmonic frequencies and series transmission lines. The HCDMN can effectively suppress unwanted second-harmonic signals and control the fundamental and second harmonic impedances to operate in continuous class-F-1 mode at two operating frequencies. The implemented PA has dimensions of 75.3 mm x 54.9 mm. Measurement results demonstrate that the PA achieves an exceptional performance, with peak drain efficiencies (DEs) of 81.5 and 71.8 %, saturated output powers of 40.3 and 41.9 dBm, and second harmonic levels of -75.6 and -49.4 dBc at 2.3 and 3.35 GHz, respectively. Furthermore, the DEs remain above 65 % in the two frequency bands of 2.2-2.5 and 3.3-3.45 GHz.
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