Name
Abstract | ||
|---|---|---|
Bandpass power amplifiers (PAs) are typically implemented by a cascade of second-order topologies. To achieve a wide and flat passband response, the number of resonators must be increased, which leads to large size, high loss and low efficiency, especially at high frequencies. In this paper, a wideband Class-F
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PA based on a microstrip multimode bandpass impedance transformer (BPIT) is proposed. The modified quad-mode BPIT operation enables the creation of multiple transmission poles using only a single resonator, thus simultaneously achieving a flat wideband response in a small size. In addition, the drain bias and input feed line of the BPIT are arranged to satisfy the harmonic-impedance requirement of the Class-F
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amplifier. Two PA prototypes have been designed, fabricated, and measured, which exhibit desirable filtering characteristics centered at 3.5 and 3.6 GHz for 5G applications. The fabricated dual- and quad-mode circuits demonstrate large-signal gains of 11.5 dB and 12.6 dB, maximum power added efficiencies (PAEs) of 67.4% and 66.3%, respectively and, with output powers greater than 38.5 dBm. For operation with a PAE larger than 60%, the PAs achieve bandwidths of 150 and 250 MHz, respectively. |
Year | DOI | Venue |
|---|---|---|
2020 | 10.1109/TCSI.2020.2978914 | IEEE Transactions on Circuits and Systems I: Regular Papers |
Keywords | DocType | Volume |
Resonators,Feeds,Impedance,Harmonic analysis,Transistors,Capacitance,Wideband | Journal | 67 |
Issue | ISSN | Citations |
7 | 1549-8328 | 1 |
PageRank | References | Authors |
0.38 | 0 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Li-Heng Zhou | 1 | 1 | 0.38 |
| Xin Yu Zhou | 2 | 7 | 2.34 |
| Wing Shing Chan | 3 | 68 | 10.55 |
| Tushar Sharma | 4 | 8 | 2.49 |
| Derek Ho | 5 | 10 | 1.78 |