A high efficiency dual‐band outphasing power amplifier design

Wang, Weiwei; Chen, Shichang; Cai, Jialin; Zhou, Xinyu; Chan, Wing Shing; Wang, Gaofeng

doi:10.1002/mmce.22515

Cited by 11 publications

(13 citation statements)

References 38 publications

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“…However, in the middle band, only the efficiency decreases. These drawbacks can be observed in previous works [3][4][5][6][7][8][9][10][11][12][13][14][15][16] where the output power and power gain are not isolated in the middle band. Isolation within the middle band is crucial for efficiency and linearity.…”

mentioning

confidence: 88%

“…Multiband systems have gained popularity in recent years due to their compact size, low cost, and ease of implementation. Several dual-band PAs with different structures have been reported [3][4][5][6][7][8][9][10][11][12][13][14][15][16] . Challenges in dual-band PAs include efficiency, output power, gain, and cost, with the most significant challenge being the similarity of characteristics between the two bands.…”

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confidence: 99%

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Design of dual-band power amplifier using bandstop filter and dual-mode bias circuit for multistandard transceiver systems

Zarghami,

Hayati

2023

Sci Rep

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This paper presents a dual-band power amplifier (PA) using a meandered line bandstop filter (BSF). An important challenge addressed in this design is to achieve proper isolation between the operational bands of the amplifier. The proposed BSF provides isolation and efficiency, effectively separating the output power and power gain between the two operational bands. Additionally, a dual-mode bias circuit is designed to serve as an inductor choke and control the second harmonics for both operating frequencies simultaneously. Two dual-band PAs, utilizing LDMOS and GaN HEMT transistors, have been designed using the proposed output matching circuit, which incorporates the BSF, bias circuit, and compensation circuit. The results obtained from both PAs, employing different transistors, are identical. Based on the presented concepts, a dual-band PA with an LDMOS transistor has been fabricated and measured. The measurements reveal an efficiency of 79.23%, an output power of 39.85 dBm, and a power gain of 14.85 dB at a frequency of 0.7 GHz. Similarly, at a frequency of 1.9 GHz, the efficiency is 77.24%, the output power is 38.22 dBm, and the power gain is 13.22 dB.

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confidence: 88%

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confidence: 99%

Design of dual-band power amplifier using bandstop filter and dual-mode bias circuit for multistandard transceiver systems

Zarghami,

Hayati

2023

Sci Rep

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“…Moreover, these signals usually have high PAPR, especially in 5G communications [37][38][39]. Therefore, several techniques are proposed to answer this challenge to be able to achieve high efficiency from peak to back-off power levels [40,41]. Some techniques such as ET and EER use a variable power supply.…”

Section: A Solution To Overcome Envelope Variationsmentioning

confidence: 99%

A review of different structures of power amplifiers to improve linearity and efficiency

Ziraksaz

2024

Comput. Telecommun. Eng.

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<p>This review paper presents a comprehensive study of commonly used power amplifier (PA) structures. In recent years, with the development of modern wireless telecommunications and their dramatic challenges, new requirements are needed. In addition, some applications, like cell phones and tablets for example, need new considerations, especially in terms of power consumption. Also, linearity is another major factor in designing a PA. Furthermore, fabrication technologies such as complementary metal-oxide semiconductor (CMOS), silicon on insulator (SOI), gallium nitride (GaN), gallium arsenide (GaAs), etc., play a crucial role in terms of power consumption. Therefore, it is necessary for PAs to meet these considerations. This paper reviews design considerations, fabrication technologies and common PA structures including envelope tracking (ET), envelope elimination and restoration (EER), Doherty, linear amplification with nonlinear components (LINC), feedback and feedforward linearization techniques with their pros and cons. This review focuses on the significant achievements, techniques, structures and characteristics of each. Also, this review focuses on the significant achievements, techniques, structures and characteristics of each. Also, this paper tries to provide a brief overview of the various methods with the advantages and disadvantages of each. This review paper tries to make readers familiar with common structures so that readers know the advantages and disadvantages of each and choose the desired structure based on their priorities.</p>

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“…The presented HCC in 7 is based on the network parameter extraction method, while 8 utilizes the precise harmonic control approach. The HCCs of 9 and 10 relies on impedance transformers and reactance compensation networks, and centered around a flexible network configuration with crossed transmission lines, respectively. In 13 , instead of using harmonic rejection filters, a narrow-band diplexer is used.…”

Section: Introductionmentioning

confidence: 99%

A new design approach for dual-band power amplifiers based on dual-band HCC and bandpass filter

Zarghami,

Hayati

2024

Sci Rep

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This paper introduces a novel design approach based on the dual-band harmonic control circuit and bandpass filter for dual-band power amplifiers. The circuit schematic of the proposed approach is constructed using four resonators and RFC inductors. The first two resonators are dedicated to controlling the second harmonics, while the third and fourth resonators serve as a harmonic blocker, allowing only the main signals to pass through to the load. Subsequently, all components are replaced by circuits based on microstrip elements, forming the proposed OMN. This OMN includes a novel wideband bias circuit, elliptically coupled resonators, and a new dual-band bandpass filter. To ensure compatibility with the transistor, a compensator line has been integrated. As a result, a dual-band power amplifier has been fabricated and measured at two operating frequencies, 2.1 GHz and 2.91 GHz. The measured values for drain efficiency, output power, and power gain at 2.1 GHz are 75.98%, 37.5 dBm, and 12.5 dB, respectively. Similarly, at 2.91 GHz, these values are 75.73%, 37.24 dBm, and 12.24 dB, respectively.

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A high efficiency dual‐band outphasing power amplifier design

Cited by 11 publications

References 38 publications

Design of dual-band power amplifier using bandstop filter and dual-mode bias circuit for multistandard transceiver systems

Design of dual-band power amplifier using bandstop filter and dual-mode bias circuit for multistandard transceiver systems

A review of different structures of power amplifiers to improve linearity and efficiency

A new design approach for dual-band power amplifiers based on dual-band HCC and bandpass filter

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