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Thirteenth National Radio Science Conference. NRSC '96最新文献

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CMOS differential pass-transistor logic (CMOS DPTL) predischarge buffer design CMOS差分通管逻辑(CMOS DPTL)预放电缓冲器设计
Thirteenth National Radio Science Conference. NRSC '96 Pub Date : 1996-03-19 DOI: 10.1109/NRSC.1996.551142
S. Kayed, H.F. Ragaei
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引用次数: 0
Penetration of the nuclear electromagnetic pulse (EMP) in lossy dielectric media 核电磁脉冲(EMP)在有耗介质中的穿透
Thirteenth National Radio Science Conference. NRSC '96 Pub Date : 1996-03-19 DOI: 10.1109/NRSC.1996.551111
S. El-Khamy, A. El-Gendy
{"title":"Penetration of the nuclear electromagnetic pulse (EMP) in lossy dielectric media","authors":"S. El-Khamy, A. El-Gendy","doi":"10.1109/NRSC.1996.551111","DOIUrl":"https://doi.org/10.1109/NRSC.1996.551111","url":null,"abstract":"The nuclear electromagnetic pulse (EMP) presents a dangerous threat to electronic systems. We investigate the penetration capabilities of the EMP through a lossy dielectric. A transient solution is presented that takes into consideration the special time function of EMP pulses and the dispersion of the medium. The spectrum and time domain responses of the induced pulses at different depths are computed for different degrees of medium conductivity. The results are of importance in determining the EMP shielding capabilities of different media and to get a measure of the EMP leakage through buildings, antenna radomes and shelters.","PeriodicalId":127585,"journal":{"name":"Thirteenth National Radio Science Conference. NRSC '96","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129662011","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
An amplifier predistort lineariser for future mobile radio basestations 一种用于未来移动无线电基站的放大器预失真线性化器
Thirteenth National Radio Science Conference. NRSC '96 Pub Date : 1996-03-19 DOI: 10.1109/NRSC.1996.551132
O. Ata
{"title":"An amplifier predistort lineariser for future mobile radio basestations","authors":"O. Ata","doi":"10.1109/NRSC.1996.551132","DOIUrl":"https://doi.org/10.1109/NRSC.1996.551132","url":null,"abstract":"The linearisation of a radio basestation amplifier using a third order and a fifth order predistortion scheme is studied. Adaptive predistortion using a third order predistorter improves the power level of the inter-modulation distortion (IMD), which results from amplitude and phase nonlinearities in the amplifier frequency response, by between 6.5 dB and 30 dB, as measured by a two-tone simulation test by exciting the input with a sinusoidal waveform. To keep the sampling rate, as low as possible for speeding up the computation time, the RF carrier signal is avoided since it would have no effect on the simulation results; hence frequency down-conversion to baseband is considered. The variation in improvement is due to changes in the input power level. The improvement increases as the input power is backed off from the 1 dB compression point. A fifth order predistorter will give an IMD improvement of between 17 dB and 45 dB if properly adjusted.","PeriodicalId":127585,"journal":{"name":"Thirteenth National Radio Science Conference. NRSC '96","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128871274","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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