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Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)最新文献

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Electrical package modeling for high power RF semiconductor devices 大功率射频半导体器件的电气封装建模
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709211
T. Liang, J. Plá, M. Mahalingam
{"title":"Electrical package modeling for high power RF semiconductor devices","authors":"T. Liang, J. Plá, M. Mahalingam","doi":"10.1109/RAWCON.1998.709211","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709211","url":null,"abstract":"A modeling procedure is developed for generating electrical package models for air-cavity metalized ceramic packages. Such models are capable of accounting for parasitic effects associated with the capacitance of the bonding pads in the package and the inductance of the bond wires. We have applied this modeling procedure to extract package equivalent circuit models for some of Motorola's LDMOS RF power transistors. The models have been validated up to the third harmonic with respect to the device's operating frequency. It has been demonstrated that the package parasitic effects contribute significantly to an accurate prediction of the packaged transistor nonlinear performance.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114576716","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: 1
Analysis of impact on handset transmitter design of the high-speed data requirements in the IS-95-B CDMA wireless standard 分析了IS-95-B CDMA无线标准中高速数据要求对手机发射机设计的影响
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709169
G. Mandyam
{"title":"Analysis of impact on handset transmitter design of the high-speed data requirements in the IS-95-B CDMA wireless standard","authors":"G. Mandyam","doi":"10.1109/RAWCON.1998.709169","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709169","url":null,"abstract":"As part of the evolution of the IS-95 CDMA wireless communications towards third-generation technology, high-speed data requirements were defined for both the uplink and downlink in the proposed IS-95-B revision. Although the requirements for the downlink are straightforward, the uplink requirements have considerably larger impact on the handset transmitter and base station receiver design. The impacts on the transmitter are examined, from baseband to RF frequencies. In particular, waveform quality and emissions are examined through high-level simulation to determine the tradeoffs involved implementation of a handset design which can support IS-95-B high speed data requirements for the uplink in the 1.9 GHz band.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128239061","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
Partially interdigitated combline filter 部分交叉组合滤波器
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709195
R. Vangala
{"title":"Partially interdigitated combline filter","authors":"R. Vangala","doi":"10.1109/RAWCON.1998.709195","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709195","url":null,"abstract":"Ceramic combline filters have been the preferred choice for duplexing the transmitter and the receiver to the antenna in wireless portable applications. However, it is also the biggest component in today's radios. Therefore, there is great interest in reducing the size of these filters. Low cost is also a big driver. One incremental solution is to find a way to eliminate the external metal shield that, typically, accounts for 10% to 20% the filter volume and for 5% to 10% of the manufacturing cost. However, the external metal shield helps to reduce the unwanted parasitic field coupling between combline resonators at the open circuit end. These fields terminate on the ground plane provided by the shield. The solution presented is to interdigitate some of the resonators in the filter and thereby distribute the ground plane sufficiently to eliminate the shield without adversely affecting the stopband attenuation performance.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128867459","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: 0
A wireless data system constructed of SAW-based receiver/transmitter and its applications to medical cares 基于saw的无线数据接收/发送系统及其在医疗中的应用
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709133
K. Matsumura, G. Fujita, I. Shirakawa, H. Inada
{"title":"A wireless data system constructed of SAW-based receiver/transmitter and its applications to medical cares","authors":"K. Matsumura, G. Fujita, I. Shirakawa, H. Inada","doi":"10.1109/RAWCON.1998.709133","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709133","url":null,"abstract":"The present paper describes a wireless data system dedicated to medical cares by employing SAW-based receiver and transmitter. In order to realize the portability as well as to lower the power consumption, an ASIC architecture is additionally devised to implement the intermittent drive and the communication protocol, by means of which the wireless data system can admit portable monitoring facilities in medical cares, i.e. the wandering prevention of patients with senile dementia and the 24-hour observation of portable electrocardiographs.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121652824","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
A high efficiency MMIC power amplifier for phased array antenna applications 一种用于相控阵天线的高效率MMIC功率放大器
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709204
B. Kormanyos, R.W. Kruse, D.R. Follensbee
{"title":"A high efficiency MMIC power amplifier for phased array antenna applications","authors":"B. Kormanyos, R.W. Kruse, D.R. Follensbee","doi":"10.1109/RAWCON.1998.709204","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709204","url":null,"abstract":"A high efficiency two stage MMIC power amplifier has been designed to meet the requirements of a 64 element transmit phased array antenna operating at 8.2 GHz. The array will provide a high speed data communication link for the NASA GSFC new millennium program. The array is to be installed on the Earth observing scientific satellite EO-1 scheduled for launch in 1999. The two stage MMIC amplifier cell includes an on chip gate bias reference. It provides 23 dB small signal gain, 45% PAE, and requires only 1 square millimeter of die area.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121689973","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: 1
Reception algorithms for ray launching modeling of indoor propagation 室内传播射线发射建模的接收算法
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709186
S. Flores, L.F. Mayorgas, F.A. Jimenez
{"title":"Reception algorithms for ray launching modeling of indoor propagation","authors":"S. Flores, L.F. Mayorgas, F.A. Jimenez","doi":"10.1109/RAWCON.1998.709186","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709186","url":null,"abstract":"Ray launching is a deterministic method for modeling radio wave propagation based on geometric optics theory. This method is very efficient in three-dimensional and complex environments like inside buildings. But some problems appear implementing the reception algorithms, because the receptors are considered punctual and the rays have no thickness. The reception sphere method is a popular technique used to fix this problem. An alternative method is to launch three-dimensional tubes, instead of rays. Both techniques are analyzed, showing the advantages and disadvantages of each one in efficiency and accuracy.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121811856","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
A dual-polarized microstrip antenna array with high isolation fed by coplanar network 采用共面网络馈电的高隔离双极化微带天线阵列
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709174
Shi-Chang Gao, S. Zhong
{"title":"A dual-polarized microstrip antenna array with high isolation fed by coplanar network","authors":"Shi-Chang Gao, S. Zhong","doi":"10.1109/RAWCON.1998.709174","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709174","url":null,"abstract":"In this paper, serial corner feeding of a square patch with two ports is proposed to realize dual polarization. For the four-element dual-polarized array, a novel coplanar feedline network is presented. An efficient method of analysis is developed and a practical array is manufactured. The measured isolation is less than -40 dB at 6.07 GHz. The proposed array occupies a smaller area than other dual-polarized arrays commonly used and is easier to further combine to form a larger coplanar array.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131478607","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: 32
A two stage, monolithic integrated 200 mW HEMT amplifier for wireless ATM 用于无线ATM的两级单片集成200mw HEMT放大器
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709152
T. A. Bos, U. Lott, W. Bachtold
{"title":"A two stage, monolithic integrated 200 mW HEMT amplifier for wireless ATM","authors":"T. A. Bos, U. Lott, W. Bachtold","doi":"10.1109/RAWCON.1998.709152","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709152","url":null,"abstract":"For wireless LAN applications a compact two stage HEMT amplifier is designed and on-wafer measured with on-chip matching and bias networks. At 17.2 GHz the amplifier delivers 23.1 dBm saturated output power from a 3.3 V supply. At the 1 dB compression point of 20.4 dBm the amplifier has 13.1 dB gain. Measured performance of the amplifier proves the applicability up to 20 GHz. The amplifier having a low output reflection coefficient is suitable as driver stage for amplifiers with higher power outputs.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127579266","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: 1
Analysis and coloring of a shotgun cellular system 鸟枪细胞系统的分析与着色
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709134
T. Brown
{"title":"Analysis and coloring of a shotgun cellular system","authors":"T. Brown","doi":"10.1109/RAWCON.1998.709134","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709134","url":null,"abstract":"This paper analyzes cellular systems where the base stations are placed at random. Analysis compares the base station to mobile link in random systems to ideal hexagonal systems. Under log-normal shadow fading and sectorizing-but no channel planning-the random system has carrier to interference levels within 4 dB and spectral efficiency within 2 dB of the hexagonal system. A simple linear-time channel assignment algorithm reduces each of these differences by 1 dB. Thus, at a modest cost in performance, deployment costs and deployment speed can be greatly reduced.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131883776","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: 17
MMIC-based class-A/F power amplifier for ultra-linear-commercial PCS multiple-modulation-format base station power amplification 基于mmic的超线性商用PCS多调制格式基站功率放大a /F类功率放大器
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709203
D. Helms, M. Testa, Nelly Vladimirsky, D. Wills
{"title":"MMIC-based class-A/F power amplifier for ultra-linear-commercial PCS multiple-modulation-format base station power amplification","authors":"D. Helms, M. Testa, Nelly Vladimirsky, D. Wills","doi":"10.1109/RAWCON.1998.709203","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709203","url":null,"abstract":"An MMIC based, three stage, class-A/F driver amplifier provided greatly improved linear power in concurrent multiple modulation formats over previous MMICs and class A/F amplifiers. The modified class A/F structure suppresses the 3rd and 5th order products by more than 15.8 dB and 13 dB respectively, over a typical class A/F amplifier, and by 17.8 dB over a straight class A amplifier. This provides a 3rd order intercept of 56.7 dBm. for only 48 watts DC. The amp has 0.3 dB gain flatness over a 10% AMPs bandwidth. The technique is patented.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134558779","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: 0
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