Name
Abstract | ||
|---|---|---|
In this paper, we present a 25 dBm Class-D outphasing power amplifier (PA) with cross-bridge combiners. The Class-D PA is designed in a standard 45 nm process while the combiner is implemented on board using lumped elements for flexibilities in testing. Comparing with conventional non-isolated combiners, the elements of the cross-bridge combiner are carefully chosen so that additional resonance network is formed to reduce out-of-phase current, thereby increasing backoff efficiency of the outphasing PA. The Class-D outphasing PA with the proposed combiner is manufactured and measured at both 900 MHz and 2.4 GHz. It achieves 55% peak power-added efficiency (PAE) at 900 MHz and 45% at 2.4 GHz for a single tone input. For a 10 MHz LTE signal with 6 dB PAR, the PAE is 32% at 900 MHz with −39 dBc adjacent channel power ratio (ACPR) and 22% at 2.4 GHz with −33 dBc ACPR. With digital predistortion (DPD), the linearity of the PA at 2.4 GHz is improved further to reach −53 dBc, −50 dBc, −42 dBc ACPR for 10 MHz, 20 MHz, and 2-carrier 20 MHz LTE signals. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/JSSC.2015.2403316 | J. Solid-State Circuits |
Keywords | Field | DocType |
distortion,power added efficiency,rlc circuits,capacitors,harmonic analysis,switches,inductors,resonant frequency,pae | Capacitor,Computer science,Linearity,Inductor,Electronic engineering,Adjacent channel power ratio,dBc,Electrical engineering,RLC circuit,Predistortion,Amplifier | Journal |
Volume | Issue | ISSN |
50 | 5 | 0018-9200 |
Citations | PageRank | References |
7 | 0.64 | 8 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Lei Ding | 1 | 7 | 0.64 |
| Joonhoi Hur | 2 | 7 | 0.64 |
| Aritra Banerjee | 3 | 7 | 0.98 |
| Rahmi Hezar | 4 | 7 | 0.64 |
| Baher Haroun | 5 | 34 | 9.20 |