2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON)最新文献_第4页

First-pass design of high efficiency power amplifiers using accurate large signal models 采用精确大信号模型的高效率功率放大器的首通设计

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461832

D. Y. Wu, Daniel Frebrowski, S. Boumaiza

{"title":"First-pass design of high efficiency power amplifiers using accurate large signal models","authors":"D. Y. Wu, Daniel Frebrowski, S. Boumaiza","doi":"10.1109/WAMICON.2010.5461832","DOIUrl":"https://doi.org/10.1109/WAMICON.2010.5461832","url":null,"abstract":"A systematic, first-pass methodology for designing high efficiency power amplifier (PA) using only large signal CAD models is presented. Detailed analysis using the model reveals significant insights into PA operation as well as the required impedance environment for high efficiency mode of operation. In particular, waveform engineering and empirical loadpull are used to determine the optimal class of operation and impedance terminations. Combined with the use of precise electromagnetic simulator in synthesizing the matching network, first pass design of a 10W, 3.3 GHz GaN inverse class F PA as well as a 2.5 GHz push-pull inverse class F PA was realized with very good agreement between simulation and measurement results. Specifically, the 3.3 GHz PA achieved 74% power added efficiency (PAE) at 3.27 GHz with 38.27 dBm output power, while the push-pull PA achieved 75% drain efficiency with 42.7 dBm output power. The linearizability of the 3.3 GHz PA is demonstrated using predistorted WiMAX modulated signals. When combined with DPD, the PA showed acceptable EVM for use in next generation wireless base stations.","PeriodicalId":112402,"journal":{"name":"2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121110895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

A novel technique to measure the input impedance of on-chip microstrip patch antenna in standard CMOS technology 一种基于标准CMOS技术测量片上微带贴片天线输入阻抗的新方法

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461861

T. Al-Attar

引用次数: 1

24 GHz low phase noise HBT dielectric resonator oscillator 24 GHz低相位噪声HBT介电谐振振荡器

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461885

P. Vryonides, S. Nikolaou, H. Haralambous

引用次数: 3

A 1 KW Pulsed amplifier using MESFET, LDMOS and Bipolar transistors at 2856 MHz 采用MESFET、LDMOS和双极晶体管的1 KW脉冲放大器，工作频率为2856 MHz

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461859

S. Bharj

{"title":"A 1 KW Pulsed amplifier using MESFET, LDMOS and Bipolar transistors at 2856 MHz","authors":"S. Bharj","doi":"10.1109/WAMICON.2010.5461859","DOIUrl":"https://doi.org/10.1109/WAMICON.2010.5461859","url":null,"abstract":"The 1 Kilo-Watt Amplifier Pulsed amplifier has been designed and tested for driving a Klystron power amplifier. The amplifier consists of a Class A multistage, single ended pre-driver using commercially available MESFET devices and consists of bias sequencing and voltage regulation. The 30 dB gain Amplifier operates from a single supply. The pre-driver is followed by a 50 Watt GaN single stage amplifier that is biased at a very low current Class AB mode. The power amplifier output stage has been designed using both Bipolar and LDMOS transistors. A four way Gysel power splitter / combiner is used to combine four Class C Bipolar pre-matched transistors capable of producing a pulsed power output in excess of 250W each with a duty cycle of 1%. A second power amplifier stage utilizes eight LDMOS transistors which are combined using commercial-off the shelf hybrids has also been made with the same foot print. The complete amplifier, either with the Bipolar or LDMOS transistors, has delivered in excess of 1 KW of pulsed power at 2856 MHz with a pulse rise time of better than 100nsec. This paper presents the design and measurements of the amplifier.","PeriodicalId":112402,"journal":{"name":"2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131515672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Can a routing protocol be truly optimal? dynamic load-balancing in wireless sensor networks 路由协议真的是最优的吗?无线传感器网络中的动态负载均衡

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461871

Daniel Lee, S. Wicker

引用次数: 1

Broadband MMIC power amplifier for multiple wireless systems 用于多种无线系统的宽带MMIC功率放大器

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461854

A. Ezzeddine, Ho-Chung Huang

{"title":"Broadband MMIC power amplifier for multiple wireless systems","authors":"A. Ezzeddine, Ho-Chung Huang","doi":"10.1109/WAMICON.2010.5461854","DOIUrl":"https://doi.org/10.1109/WAMICON.2010.5461854","url":null,"abstract":"We report the successful development of a broadband, high-linearity MMIC PA. This single PA is useful for multiple wireless systems including satellite mobile ground terminal, GPS transmitter, WiFi repeater, and WiMAX repeater applications. Using GaAs MESFET technology, we connect two 12mm FET unit cells both RF and DC in series (HIFET) to achieve a total gate width of 24mm. This way, the DC bias voltage is doubled from 7V to 14V. Because the 12mm FET's optimum output impedance is about 6 ohms, a single conventional 24mm FET's optimum output impedance will be about 3 ohms. The 2HIFET output optimum impedance is twice that of a 12mm FET, which is about 12 ohms. This high output impedance leads to broadband capability. This is the key reason that a single MMIC PA can serve multiple wireless system applications. This 2-stage MMIC PA is housed in a commercial ceramic package. It achieves 27dB small-signal gain, 39dBm P1dB, 30% power added efficiency over the 1.5GHz to 2.5GHz band. It has good linearity of 51dBm IP3, which is 12dB above P1dB. We believe the combination of bandwidth, output power, efficiency, and linearity is the best reported for MESFET MMIC PA to date.","PeriodicalId":112402,"journal":{"name":"2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON)","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121945124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Low power super-regenerative Impulse-FM-UWB transceiver for WBAN 用于WBAN的低功率超再生脉冲fm - uwb收发器

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461873

M. Anis, M. Ortmanns, N. Wehn

引用次数: 5

Wireless powering of sensors embedded in concrete 嵌入混凝土的传感器无线供电

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461866

S. Georgakopoulos, Shan Jiang

引用次数: 4

Enhancement of signal integrity for multi-module memory bus by particle swarm optimization 基于粒子群算法的多模块存储总线信号完整性增强

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461892

D. Lin, M. Houng, Wen-Sheng Liu

引用次数: 3

A new Doherty amplifier design approach 一种新的多赫蒂放大器设计方法

2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON) Pub Date : 2010-04-12 DOI: 10.1109/WAMICON.2010.5461882

Tian-Wei He, U. Balaji

引用次数: 2