New Mixed-Mode Design Methodology for High-Efficiency Outphasing Chireix Amplifiers

Chang, Hsiu-Chen; Hahn, Yunsik; Roblin, Patrick; Barton, Taylor W.

doi:10.1109/tcsi.2018.2882770

Cited by 43 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to (2), the relationship between Z 3 and Ropt can be obtained, for the convenience of analysis, it is defined here…”

Section: Theoretical Analysis Of Cm-dpamentioning

confidence: 99%

“…As a key component of transmitter, power amplifier (PA) needs to improve the efficiency of output back‐off (OBO) in a wider working range. To break this limitation of traditional PA, a variety of PA architectures dealing with high PAPR have been proposed, such as envelope tracking, 2,3 Doherty power amplifier (DPA) 4–6 and envelope erasure recovery 7 . Where DPA has a simple circuit structure and high reliability, and has become the most widely used architecture of each base station.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High‐efficiency broadband Doherty amplifier based on internal matching

Xie,

Zhong,

Liang

2023

Micro & Optical Tech Letters

View full text Add to dashboard Cite

In this paper, a compact internally matched architecture of continuous class‐B/J Doherty power amplifier is studied. The influence of symmetric generalized combiner and postmatching network with harmonic control on the bandwidth and efficiency of Doherty power amplifier (DPA) is analyzed in detail. Based on the parameters obtained from theoretical analysis, a design method of internally matched continuous mode DPA (CM‐DPA) is proposed, and a broadband DPA with a size of 22.8 mm 24.5 mm was developed for experimental verification. The test structure shows that the maximum output power at saturation can reach 46.2 dBm. The efficiency of 6 dB back‐off is 58%–63.4%, with good consistency. In the reliability experiment, transistor and matching circuit of the CM‐DPA have a temperature below 100°C at saturation. The output power and efficiency tested at different temperatures (C, C, and C) show that the DPA has high reliability.

show abstract

“…According to (2), the relationship between Z 3 and Ropt can be obtained, for the convenience of analysis, it is defined here…”

Section: Theoretical Analysis Of Cm-dpamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High‐efficiency broadband Doherty amplifier based on internal matching

Xie,

Zhong,

Liang

2023

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…Traditional single-device PAs, such as class-F [2], class-E [3], and class-J [4], cannot meet the requirements of efficiently amplifying signals with high PAPR. Load modulation PAs, such as Doherty [5], out-phasing [6], and load modulation balance amplifiers (LMBAs) [7], can maintain high efficiency at the power back-off (OBO) level and are promising candidates for meeting the stringent linearity requirements. Currently, DPAs are widely used in wireless communications due to their easy-to-implement architecture [8,9].…”

Section: Introductionmentioning

confidence: 99%

A High-Relative-Bandwidth Doherty Power Amplifier with Modified Load Modulation Network for Wireless Communications

Zhu

Zhang

et al. 2023

Sensors

View full text Add to dashboard Cite

This paper presents a novel load modulation network to realize a broadband Doherty power amplifier (DPA). The proposed load modulation network consists of two generalized transmission lines and a modified coupler. A comprehensive theoretical analysis is carried out to explain the operation principles of the proposed DPA. The analysis of the normalized frequency bandwidth characteristic shows that a theoretical relative bandwidth of approximately 86% can be obtained across a normalized frequency range of 0.4–1.0. The complete design process that allows the design of the large-relative-bandwidth DPA based on derived parameter solutions is presented. A broadband DPA operating between 1.0 GHz and 2.5 GHz was fabricated for validation. Measurements demonstrate that the DPA can deliver an output power of 43.9–44.5 dBm with a drain efficiency of 63.7–71.6% in the 1.0–2.5 GHz frequency band at the saturation level. Moreover, a drain efficiency of 45.2–53.7% can be obtained at the 6 dB power back-off level.

show abstract

“…Modern wireless communication signals usually adopt complex modulation methods to improve the utilization efficiency of spectrum resources [ 2 , 3 ]. These signals are often large peak-to-average ratio signals, and traditional power amplifiers (PAs) are not suitable for amplifying these signals [ 4 , 5 ]. Therefore, higher performance is required from the power amplifiers.…”

Section: Introductionmentioning

confidence: 99%

A Power Amplifier with Large High-Efficiency Range for 5G Communication

Zhang

Cheng

2020

Sensors

View full text Add to dashboard Cite

This paper presents a new method to design a Doherty power amplifier (DPA) with a large, high-efficiency range for 5G communication. This is through analyzing the drain-to-source capacitance (CDS) of DPAs, and adopting appropriate impedance of the peak device. A closed design process is proposed, to design the extended efficiency range DPA based on derived theories. For validation, a DPA with large efficiency range was designed and fabricated by using two equal devices. The measured results showed that the saturated output power was between 43.4 dBm and 43.7 dBm in the target band. Around 70% saturated drain efficiency is obtained with a gain of greater than 11 dB. Moreover, the obtained drain efficiency is larger than 50% at the 10 dB power back-off, when operating at 3.5 GHz. These superior performances illustrate that the implemented DPA can be applied well in 5G communication.

show abstract

New Mixed-Mode Design Methodology for High-Efficiency Outphasing Chireix Amplifiers

Cited by 43 publications

References 34 publications

High‐efficiency broadband Doherty amplifier based on internal matching

High‐efficiency broadband Doherty amplifier based on internal matching

A High-Relative-Bandwidth Doherty Power Amplifier with Modified Load Modulation Network for Wireless Communications

A Power Amplifier with Large High-Efficiency Range for 5G Communication

Contact Info

Product

Resources

About