2017
DOI: 10.2528/pierc17031703
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A Wideband Doherty Power Amplifier With Shunted Reactive Load for Efficiency Enhancement

Abstract: Abstract-A highly efficient Doherty power amplifier (DPA) using shunted reactive load is designed to achieve wideband operation. For enhanced back-off efficiency over the whole bandwidth, a modified load modulation network (LMN), which employs a shunted reactive load at the combining point, was firstly designed to enlarge the effective load impedance of the carrier amplifier at low and high frequencies. Then, the two-point matching approach was employed to design the carrier and peaking output matching network… Show more

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Cited by 1 publication
(1 citation statement)
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“…The efficiency is improved by 2-3% with respect to the conventional DPA. A different approach is proposed in [18], where the load modulation network of the conventional DPA is replaced with two quarter-wavelength impedance transformers and a shunted reactive load for efficiency-bandwidth enhancement simultaneously, as shown in Figure 3. The proposed circuit is fabricated and measured for validation purposes.…”
Section: Output Combiner Modificationmentioning
confidence: 99%
“…The efficiency is improved by 2-3% with respect to the conventional DPA. A different approach is proposed in [18], where the load modulation network of the conventional DPA is replaced with two quarter-wavelength impedance transformers and a shunted reactive load for efficiency-bandwidth enhancement simultaneously, as shown in Figure 3. The proposed circuit is fabricated and measured for validation purposes.…”
Section: Output Combiner Modificationmentioning
confidence: 99%