6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574)最新文献

Gyroelectric properties of indium antimonide at terahertz frequencies 锑化铟在太赫兹频率下的陀螺电特性

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962165

L. Y. Tio, L. Davis

引用次数: 4

A millimetre-wave detector for short range applications 用于短距离应用的毫米波探测器

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962167

T. Brabetz, V. Fusco

引用次数: 1

A method for calculating the radiation pattern of a non-planar conformal array 一种计算非平面共形阵列辐射方向图的方法

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962175

T.F.J. Girvan, V. Fusco, A. Roberts

引用次数: 3

A balanced vector modulator for LMDS applications 用于LMDS应用的平衡矢量调制器

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962188

C. Ng, M. Chongcheawchamnan, I. Robertson

引用次数: 5

Potential interfering signals in software defined radio 软件无线电中的潜在干扰信号

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962157

G. Watkins

{"title":"Potential interfering signals in software defined radio","authors":"G. Watkins","doi":"10.1109/HFPSC.2001.962157","DOIUrl":"https://doi.org/10.1109/HFPSC.2001.962157","url":null,"abstract":"Software defined radio (SDR) is often heralded as the future of mobile communications with some aspects expected within the fourth generation of European standards. An SDR suitable for commercial narrow- and broad-band applications will typically cover the frequency spectrum between 400 MHz and 6 GHz. This range encompasses all of the (worldwide) existing and emerging standards alongside likely future developments. In order to facilitate such a radio, in the absence of efficient flexible filters, a super-octave-band front-end is needed. The receiver will be subject to all the signals within this band, both wanted and interfering. It is likely that the stronger interfering signals will cause intermodulation products (IMP) within the nonperfect low noise amplifier (LNA). These IMPs can interfere with a wanted signal and, potentially, make it undetectable. This paper reports the results of a radio trial, indicating the strength, frequency and geographical location of potentially interfering signals around the Bristol area. Results are presented for typical urban, suburban, and rural environments and hotspots. The results presented in this paper give an indication of the practical dynamic range requirements of an SDR receiver operating in the frequency spectrum between 400 MHz and 6 GHz.","PeriodicalId":129428,"journal":{"name":"6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127431218","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: 8

Harmonic power generation from the non-linear output capacitance of silicon LDMOS devices 硅LDMOS器件非线性输出电容的谐波发电

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962148

R. Gaddi, J. Plá, P. Tasker

引用次数: 3

Low noise integrated active antenna as image reject mixer (IRM) 低噪声集成有源天线作为图像抑制混频器

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962179

W. Ismail, P. Gardner

引用次数: 2

Composite materials for planar frequency agile microwave devices 平面频率捷变微波器件用复合材料

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962163

J.B. Mills, C. Stevens, D. Edwards

引用次数: 2

Feedforward linearizer with reduced output auxiliary amplifier 带减小输出辅助放大器的前馈线性化器

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962151

T. Wilson, D. K. Paul

引用次数: 1

Antenna array beam-steering by the integration of a series phase shifter 由串联移相器集成的天线阵列波束控制

6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574) Pub Date : 2001-09-09 DOI: 10.1109/HFPSC.2001.962154

H. Scott, V. Fusco

{"title":"Antenna array beam-steering by the integration of a series phase shifter","authors":"H. Scott, V. Fusco","doi":"10.1109/HFPSC.2001.962154","DOIUrl":"https://doi.org/10.1109/HFPSC.2001.962154","url":null,"abstract":"Beam steering is defined as the ability to electronically steer the beam maximum of an antenna electric field pattern to some predefined point in space. Leaky wave antennas can be used for such a purpose but include inherent problems such as large size, difficulty in impedance matching and a large number of sidelobes in the resultant electric field pattern. This paper concentrates on a method for mimicking the operation of a typical leaky wave antenna array by the simple integration of a phase shifter into the array structure. Up to 12/spl deg/ beam steer is demonstrated using the integrated array whose structure is short and compact compared to the typical leaky wave arrays. The bias voltage of the phase shifter is used to control the impedance match of the array reducing the VSWR to below 1.5 where the 12/spl deg/ beam steer is experienced. The phase shift between the elements of the array, used to provide beam steering, is provided by scanning the frequency through a range of frequencies from 1.17 GHz to 1.23 GHz. This range is greatly reduced from typical leaky wave antenna arrays because the phase shifter also acts to provide an additional phase shift between the elements. The resultant radiation patterns also show improved characteristics as the number of sidelobes has been decreased.","PeriodicalId":129428,"journal":{"name":"6th IEEE High Frequency Postgraduate Colloquium (Cat. No.01TH8574)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134434726","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: 5