Broadband high-efficiency monolithic InGaP/GaAs HBT power amplifiers for 3G handset applications

Jäger, Herbert; Grebennikov, Andrei; Heaney, E.; Weigel, Robert

doi:10.1109/mwsym.2002.1011812

Cited by 23 publications

(10 citation statements)

References 9 publications

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“…1. Let us denote the power efficiency by η(P tx ) (< 1), which is typically nondecreasing with P tx [11,12]. Then, P pa , which represents the actual power consumed by PA, is represented as…”

Section: Revised Trade-off Modelmentioning

confidence: 99%

Power Amplifier Characteristic-Aware Energy-Efficient Transmission Strategy

Han

Choi

et al. 2007

NETWORKING 2007. Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet

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Abstract. The energy consumption in transmitting an information bit, i.e., energy-per-bit, has been known to decrease monotonically as the transmission time increases [1]. However, when considering the power amplifier (PA) characteristics, we learn that the energy-per-bit starts to increase as the transmission time becomes long over a certain threshold. This is caused by the fact that, in a wireless device, it is not the transmission power, which determines the energy consumed during transmissions, but the input power to the PA whose output power is used as the transmission power. Based on our new trade-off model between the energy-per-bit and transmission time, we revisit known energy-efficient scheduling algorithms. Finally, we evaluate the impact of the new tradeoff model and the performance of algorithms via simulations.

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Section: Revised Trade-off Modelmentioning

confidence: 99%

Power Amplifier Characteristic-Aware Energy-Efficient Transmission Strategy

Han

Choi

et al. 2007

NETWORKING 2007. Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet

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“…The MCM approach exacerbates this issue. In addition, due to the recent demand of multiband operation [3] and immunity to antenna proximity effects [4], wideband matching network [5] and/or quadrature balanced topology [6] are adopted by HBT PA designs to achieve robust operation against frequency variations and antenna load mismatches. However, these approaches often come with the cost of even larger footprint and compromised power efficiency.…”

Section: Introductionmentioning

confidence: 99%

A new wave of CMOS power amplifier innovations: Fusing digital and analog techniques with large signal RF operations

Kousai

Onizuka

et al. 2014

Proceedings of the IEEE 2014 Custom Integrated Circuits Conference

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The RF power amplifier (PA) is typically the most power hungry and area consuming block in a wireless transceiver system. A viable RF PA solution should offer competitive power and area efficiency while maintaining high-performance large-signal RF operations. Fully integrated RF PA in CMOS has been an area of active research and development over the past years. Recently, there has been a surge of interest to leverage the mixed-mode, analog and digital, computational and signal processing capability in CMOS to radically enhance RF CMOS PA solutions and offer unique functionalities in parallel. This paper reviews several recently reported circuit design techniques of CMOS PAs. All of these techniques take advantage of computation and integration advantages of CMOS process and can potentially lead to competitive PA solutions compared to traditional III-V HBT PA solutions.Index Terms -CMOS power amplifiers, linearity improvement, impedance tuning, back-off efficiency, digital PA.

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“…A power amplifier (PA) is a key component in a mobile terminal. Various ways of achieving a multiband or broadband amplifier have been studied [6]- [8]. However, it is difficult for the PA to achieve "band-free" operation or even multiband operation with adequate performance compared to that of a single-band PA.…”

Section: Introductionmentioning

confidence: 99%

Band-reconfigurable high-efficiency power amplifier using MEMS switches

Okumura

Narahashi

Fukuda

et al. 2005

2005 IEEE International WKSHP on Radio-Frequency Integration Technology: Integrated Circuits for Wideband Comm &Amp; Wireless S

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A band-reconfigurable power amplifier (PA) is presented that comprises band-switchable matching networks with RF microelectromechanical systems switches. The fabricated triple-band PA achieves the output power of 30 dBm and the power added efficiency of 60% in three different frequency bands, 900 MHz, 1500 MHz, and 2000 MHz. Because the proposed band-reconfigurable PA can be extended to a larger number of frequency bands, it will contribute to "band-free" operation for future mobile terminals.

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Broadband high-efficiency monolithic InGaP/GaAs HBT power amplifiers for 3G handset applications

Cited by 23 publications

References 9 publications

Power Amplifier Characteristic-Aware Energy-Efficient Transmission Strategy

Power Amplifier Characteristic-Aware Energy-Efficient Transmission Strategy

A new wave of CMOS power amplifier innovations: Fusing digital and analog techniques with large signal RF operations

Band-reconfigurable high-efficiency power amplifier using MEMS switches

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