Design of Concurrent Multiband Doherty Power Amplifiers for Wireless Applications

Nghiem, Xuan Anh; Guan, Junqing; Hone, Thomas M.; Negra, Renato

doi:10.1109/tmtt.2013.2281959

Cited by 62 publications

(33 citation statements)

References 17 publications

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“…Given (20) and from the inspection of Fig. 2, we can calculate ZM at 6-dB BOP level, i.e., at ‫ݒ‬ = ܸ ௫ /2 and at PP level, i.e., at ‫ݒ‬ = ܸ ௫ as given below:…”

Section: A Main Pa Branchmentioning

confidence: 99%

Toward a More Generalized Doherty Power Amplifier Design for Broadband Operation

Barakat

Thian

Fusco

et al. 2017

IEEE Trans. Microwave Theory Techn.

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“…Given (20) and from the inspection of Fig. 2, we can calculate ZM at 6-dB BOP level, i.e., at ‫ݒ‬ = ܸ ௫ /2 and at PP level, i.e., at ‫ݒ‬ = ܸ ௫ as given below:…”

Section: A Main Pa Branchmentioning

confidence: 99%

Toward a More Generalized Doherty Power Amplifier Design for Broadband Operation

Barakat

Thian

Fusco

et al. 2017

IEEE Trans. Microwave Theory Techn.

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“…Tri-and quad-band DPAs are developed in [50] where the theoretical study and practical implementation of multi-band impedance inverter are described. In this case the two DPAs, realized with GaN HEMT devices, show the typical Doherty behavior for all the design frequencies, i.e., 1.5, 2.1, and 2.65 GHz in the tri-band case, and 0.95, 1.5, 2.1, and 2.65 GHz for the quad-band case.…”

Section: Multi-band Solutionsmentioning

confidence: 99%

The Doherty Power Amplifier: Review of Recent Solutions and Trends

Camarchia

Pirola

Quaglia

et al. 2015

IEEE Trans. Microwave Theory Techn.

210

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In this paper, an extensive review of the most up-to-date papers on microwave Doherty power amplifiers is presented. The main applications are discussed, together with the employed semiconductor technologies. The different research trends, all aimed to improve the advantages of the Doherty scheme and to solve its inherent drawbacks, are presented. The first considered topic is the maximization of efficiency and/or linearity, where analog and digital techniques are exploited. Another important trend is the bandwidth enlargement of the Doherty architecture, that involves a large number of papers. Multi-band, multi-mode solutions are also considered, using either fixed or reconfigurable solutions. The final section is dedicated to the most significant Doherty integrated implementations.Index Terms-Doherty power amplifier, gallium arsenide, gallium nitride, linearization, wireless communications.

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“…With the development of multi-band components [2]- [8], concurrent multi-band DPAs [9]- [11] have been made realizable. Recently, a multi-band DPA (MB-DPA) with multiband impedance inverter network (MB-IIN) was proposed [12]. However, the MB-IIN is a simple transmission line, which behaves as a multi-band quarter wave line at one arbitrary frequency and several associated frequencies.…”

Section: Introductionmentioning

confidence: 99%

A Quad-Band Doherty Power Amplifier Based on T-Section Coupled Lines

Helaoui

Ghannouchi

et al. 2016

IEEE Microw. Wireless Compon. Lett.

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This letter proposes a new design technique for quad-band Doherty power amplifier (DPA) based on the T-section coupled lines network (TCLN). The TCLN allows for the design of a quad-band impedance inverter at three arbitrary frequencies and one associated frequency offering more flexibility in the design of quad-band DPAs than the state of the art. The ratio of the largest operating frequency to the smallest operating frequency is found in the range 1.95 to 7, as the ratio of the other two operating frequencies is located in the range of 1.3 to 2.76. A quad-band DPA is implemented with TCLN, operating at 0.73, 1.65, 2.67, and 3.57GHz. The measured results agree with the anticipation perfectly.

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Design of Concurrent Multiband Doherty Power Amplifiers for Wireless Applications

Cited by 62 publications

References 17 publications

Toward a More Generalized Doherty Power Amplifier Design for Broadband Operation

Toward a More Generalized Doherty Power Amplifier Design for Broadband Operation

The Doherty Power Amplifier: Review of Recent Solutions and Trends

A Quad-Band Doherty Power Amplifier Based on T-Section Coupled Lines

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