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A 45% power-added-efficiency, Ku-band 60W GaN power amplifier
2011 IEEE MTT-S International Microwave Symposium, 2011Summary form only given, as follows. A Ku-band 60 W GaN power amplifier is presented. To obtain the high efficiency, new matching circuit topology to control the reflection phase at the 2nd harmonic frequency (2fo) is applied to the power amplifier. The measured power added efficiency (PAE) of 44.9% with the output power of 47.9 dBm (62.2W) is obtained
Kazuhisa Yamauchi +5 more
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Power added efficiency and linearity tradeoffs in GaN and GaAs microwave power HEMTs
Solid-State Electronics, 2010Abstract In this paper, power added efficiency (PAE) and linearity characteristics of AlGaN/GaN HEMTs are compared with those of high-voltage GaAs pseudomorphic HEMTs. Devices with different gate widths are characterized for their power output, gain, PAE and linearity performances as a function of bias current and source and load impedance.
T. Okayama, Mulpuri V. Rao
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Enhancement of Power-Added Efficiency in GaAs Power Amplifiers by Dynamic Gate Biasing
2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 2023 We demonstrate the efficiency and linearity improvement of an E-band GaAs power amplifier (PA) through dynamic gate modulation. By optimizing the coefficients of the linear power tracking gate modulation function, we enhance the output power at the ...
Göksu Kaval +3 more
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Power-efficient multicasting in ad hoc networks
The 11th IEEE International Conference on Networks, 2003. ICON2003., 2004For power-constrained wireless ad hoc networks, a crucial issue in routing and multicasting is to conserve as much power as possible while still achieving good throughput performance. In this paper, we propose a class of power-efficient multicasting algorithms using a new cost function that jointly optimizes power conservation and path efficiency ...
J. Ye, W. C. Wong 0001, Kee Chaing Chua
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A 71.9% power-added-efficiency inverse Class-FLDMOS
2006 IEEE MTT-S International Microwave Symposium Digest, 2006Design and measured results of an inverse class-F power amplifier for high efficiency operation built with an LDMOS transistor is reported in this paper. We describe the design methodology, in particular the choice of the optimum load impedance presented at the fundamental frequency and at the harmonics. Measurements performed at 1GHz on this one stage
Allam, S. +4 more
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Power efficient resilience and lifetime in wireless ad-hoc networks
Proceedings of the 1st ACM international workshop on Foundations of wireless ad hoc and sensor networking and computing, 2008The temporary and unfixed physical topology of a wireless adhoc network is determined by the distribution of the wireless nodes as well as the transmission power (range) assignment of each node. This paper studies asymmetric power assignments for which the induced communication graph is k-strongly connected, while minimizing the total energy assigned ...
Daniel Berend +2 more
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Improved schemes for power-efficient broadcast in ad hoc networks
International Journal of High Performance Computing and Networking, 2006Ad hoc wireless networks are a special type of wireless network in which a collection of mobile hosts (nodes) with wireless network interfaces may form a temporary network without base-stations. How to design an energy efficient broadcast algorithm is very important.
Xiao Chen 0001, Jian Shen 0005
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Power efficient topology control in wireless ad hoc networks
2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733), 2004In the wireless ad hoc networks, for prolonging the communication duration of the nodes, the transmission power is required to be minimized to conserve the limited battery life. In addition, for the wireless ad hoc networks to be applicable, the networks are required to he connected. Unfortunately, the two requirements are against each other.
Tseng, Chih-Cheng, Chen, Kwang-Cheng
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