Results 61 to 70 of about 5,300,992 (236)
MicromachinesA 30~60 GHz broadband down-conversion mixer driven by low local oscillator (LO) power is presented. The down-conversion mixer utilizes an input signal coupling technique based on the Marchand balun to achieve broadband operation and achieves low LO power
Rong Wang, Jincai Wen
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A Compact Output Power Combiner for Broadband Doherty Power Amplifiers
, 2019 A novel compact output power combiner for broadband Doherty Power Amplifiers is proposed in this paper. The proposed output power combiner avoids the use of quarter-wave impedance transformers as they are sizable and work over narrow bandwidths. Instead,
Mona Zaghloul, Ali Darwish, Ken McKnight
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Envelope amplifier for broadband base-station envelope tracking power amplifier [PDF]
, 2011 Envelope tracking (ET), which is a dynamic supply control technology to realize high efficiency power amplifiers, is a promising approach for base-station transmitters of the future.
Zhu, Qiuyao
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A 13 G to 24.8 GHz Broadband Power Amplifier with 23% PAE for Sensor Applications
Engineering ProceedingsMillimeter-wave (mm-wave) radar has become a key technology in wireless sensor networks (WSNs) due to its high spatial resolution and penetration capability, enabling applications such as smart traffic control and non-contact health monitoring. Achieving
Yubin Wu, Jie Cui
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Broadband H-Band Power Amplifier with Optimum Intermediate Splitter and Combiner Impedance
1518This paper reports the successful application of an optimum intermediate impedance in the splitter/combiner structure between the parallelization paths of a five-stage common-source amplifier design to achieve a broadband power amplifier.
Wrana, Dominik +6 more
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260 GHz broadband power amplifier MMIC
, 2022 S.232-235This paper presents a broadband H-Band (220 -325 GHz) power amplifier in a 35nm InGaAs-based metamorphic high electron mobility transistor technology.
Leuther, Arnulf +4 more
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IET Microwaves, Antennas & Propagation, 2022 In this work, a design approach for broadband high‐efficiency power amplifiers is presented. The proposed technique is based on deductive de‐embedding of the nonlinear parasitics of packaged GaN‐HEMT devices.
Ahmed Sleem Sayed +2 more
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Broadband RF Power Amplifier Design Methodology Using Sequential Harmonic Characterization
, 2015 Radio Frequency Power Amplifier (RFPA) amplifies the communication signals to the required power level for transmission. It is the most power consuming stage in a transceiver chain; consequently, any improvement in terms of dissipated power and ...
Taghavi, Hosein
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Optimization of A-class power amplifiers in terms of efficiency
Физика волновых процессов и радиотехнические системыBackground. Typical A-class power amplifiers usually have low electronic efficiency values, since their operating conditions do not always correspond to the optimal efficiency mode. The Aim of the article is to optimize the efficiency of an A–class power
Aleksander V. Baranov
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Development of Broadband Power Amplifiers
, 2007 根據多項研究顯示不論在時間或是空間上，3GHz以下頻帶使用率約為15％∼85％，在3GHz以上的頻帶使用率更是相當低。因此美國聯邦通訊委員會（FCC）提出感知無線電系統（Cognitive Radio System），藉由偵測以及調整使用頻帶可以在不影響正規使用者的情形下提高頻帶使用率。為了能夠同時傳送多頻帶的訊號，傳送端必須要有一個寬頻功率放大器去適應這種系統。 本論文主要研究內容為射頻功率放大器的理論以及設計。我們分析了各種寬頻功率放大器的技巧，最後採用網路合成寬頻匹配的方法去實現寬頻功率放大器 ...
葉威志, Yeh, Wei-Chih
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