Thu, 24 Jul 2008 23:16:17 BST CiteULike: dcastros Singh http://www.citeulike.org/user/dcastro/author/Singh CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2776128 <i>Electronics Letters, Vol. 33, No. 22. (1997), pp. 1830-1831.</i><br /><br />A novel miniaturised quarter wavelength, H-shaped antenna which will find applications in monolithic microwave integrated circuit (MMIC) design is presented. The antenna occupies approximately one tenth of the substrate area of a half wavelength patch antenna. The effect on the resonance frequency, bandwidth and gain of the antenna are reported Miniaturised microstrip antenna for MMIC applications D Singh P Gardner PS Hall Electronics Letters, Vol. 33, No. 22. (1997), pp. 1830-1831. 2008-05-09T15:21:05-00:00 1997 Electronics Letters 33 22 1830 1831 antenna compact small http://www.citeulike.org/user/dcastro/article/2776108 <i>Electronics Letters, Vol. 33, No. 21. (1997), pp. 1799-1800.</i><br /><br />Experimental results obtained from an active transponder circuit mounted in a car windscreen are reported. The transponder receives a signal at 10 GHz and doubles the frequency which is transmitted at 20 GHz. The effect of glass superstrate on the active transponder circuit is reported Frequency doubling active transponder in car windscreen D Singh P Gardner PS Hall Electronics Letters, Vol. 33, No. 21. (1997), pp. 1799-1800. 2008-05-09T15:17:53-00:00 1997 Electronics Letters 33 21 1799 1800 active antenna http://www.citeulike.org/user/dcastro/article/2776106 <i>Electronics Letters, Vol. 33, No. 6. (1997), pp. 505-506.</i><br /><br />A new compact frequency doubling active transponder using a push-push technique is presented. Two outputs in anti-phase from the receiving patch antenna are amplified nonlinearly using MMICs and combined in phase suppressing the fundamental and enhancing the second harmonic. The doubled signal is then transmitted from a second patch antenna with a measured conversion gain of 6 dB Integrated push-push frequency doubling active microstrip transponder D Singh P Gardner PS Hall Electronics Letters, Vol. 33, No. 6. (1997), pp. 505-506. 2008-05-09T15:16:23-00:00 1997 Electronics Letters 33 6 505 506 active antenna microstrip http://www.citeulike.org/user/dcastro/article/2776105 <i>Microwave Conference and Exhibition, 1997 27th European, Vol. 2 (1997), pp. 1181-1185.</i> Frequency Doubling Integrated Push-push Active Microstrip Transponder D Singh P Gardner PS Hall Microwave Conference and Exhibition, 1997 27th European, Vol. 2 (1997), pp. 1181-1185. 2008-05-09T15:16:22-00:00 1997 Microwave Conference and Exhibition, 1997 27th European 2 1181 1185 active antenna microstrip http://www.citeulike.org/user/dcastro/article/2776101 <i>Low Cost Antenna Technology (Ref. No. 1998/206), IEE Colloquium on (1998), pp. 8/1-8/5.</i><br /><br />Experimental results achieved from a frequency doubling active transponder circuit mounted in a car windscreen are reported. The transponder receives a signal at 10 GHz, doubles the frequency and retransmits it at 20 GHz. The effect of the windscreen glass superstrate on the circuit and antenna properties are also reported An active antenna transponder in a car windscreen D Singh P Gardner PS Hall Low Cost Antenna Technology (Ref. No. 1998/206), IEE Colloquium on (1998), pp. 8/1-8/5. 2008-05-09T15:16:14-00:00 1998 Low Cost Antenna Technology (Ref. No. 1998/206), IEE Colloquium on 8/1 8/5 active antenna http://www.citeulike.org/user/dcastro/article/2648094 <i>Vehicular Technology, IEEE Transactions on, Vol. 39, No. 2. (1990), pp. 132-139.</i><br /><br />The results of multipath power delay profile measurements of 900-MHz mobile radio channels in Washington, DC, Greenbelt, MD, Oakland, CA, and San Francisco, CA, are presented. The measurements have focused on acquiring worst-case profiles for typical operating locations. The data reveal that at over 98% of the measured locations, root mean square (RMS) delay spreads are less than 12 μs. Urban areas typically have RMS delay spreads on the order of 2-3 μs and continuous multipath power out to excess delays of 5 μs. In hilly residential areas and in open areas within a city, RMS delay spreads are slightly larger, typically having values of 5-7 μs. In very rare instances, reflections from city skylines and mountains can cause RMS delay spreads in excess of 20 μs. The worst-case profiles show resolvable diffuse multipath components at excess delays of 100 μs and amplitudes 18 dB below that of the first arriving signal 900-MHz multipath propagation measurements for US digital cellular radiotelephone TS Rappaport SY Seidel R Singh doi:10.1109/25.54229 Vehicular Technology, IEEE Transactions on, Vol. 39, No. 2. (1990), pp. 132-139. 2008-04-10T06:20:47-00:00 1990 Vehicular Technology, IEEE Transactions on 39 2 132 139 digital measurement mobile multipath propagation http://www.citeulike.org/user/dcastro/article/1841100 <i>Vehicular Technology, IEEE Transactions on, Vol. 40, No. 4. (1991), pp. 721-730.</i><br /><br />The authors present typical and worst-case root mean square (RMS) delay spreads and excess delay spreads (10 dB) and mean channel path loss at 900 MHz in four European cities using typical cellular and microcellular antenna locations. Several thousand power delay profile measurements were made at six typical cellular and microcellular base station locations in the four cities. The data were obtained at local worst-case time-dispersion locations over hundreds of kilometers of typical operating routes, such as highways, bridges, and city streets, and form the basis for statistical models which can be used to predict the percentage of locations or the percentage of time in which channels will possess particular values of RMS delay spread and excess delay spread. The effect of reference distance on wideband path loss and the propagation path loss laws for cellular and microcellular radio channels are given. Radar cross sections computed from the data for typical scatterers in cellular and microcellular radio channels are given Path loss, scattering and multipath delay statistics in four European cities for digital cellular and microcellular radiotelephone SY Seidel TS Rappaport S Jain ML Lord R Singh Vehicular Technology, IEEE Transactions on, Vol. 40, No. 4. (1991), pp. 721-730. 2007-10-30T14:59:22-00:00 1991 Vehicular Technology, IEEE Transactions on 40 4 721 730 delay inserted-bib mobile multipath statistical urban