Evaluation of Digitally Coded Acoustic Surface-Wave Matched Filters

Jones, W.S.; Hartmann, C.S.; Claiborne, L.T.

doi:10.1109/t-su.1971.29582

Cited by 36 publications

(6 citation statements)

References 13 publications

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“…The distinguishing difference among the measured responses is the appearance of the trailing sidelobes. Distortion of the trailing sidelobes is typical of phase-coded SAW correlators [17], [24]. As discussed previously, acoustic reflections at the metal electrode edges due to mechanicalloading and piezoelectric shorting are the major cause of this distortion.…”

mentioning

confidence: 83%

A SAW-based commutation signaling modem for broadband indoor wireless communication

Kipens

Leib²,

Saw³

et al. 1998

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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This manuscript has been reproduced trom the microfilm master. U1v.1I films the teX! directly fram the original or copy submitted. Thus, sorne thesis and dissertation copies are in typewriter face, while others may be fram any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send U1\fi a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is aIso photographed in one exposure and is included in reduced fonn at the back ofthe book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality &' x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. The author has granted a nonexclusive licence allowing the National Library of Canada to reproduce, loan, distribute or sell copies of this thesis in microform, paper or electronic formats. UMIThe author retains ownership of the copyright in this thesis. Neither the thesis nor substantial extracts frOID it may be printed or otherwise reproduced without the author' s permISSIon.L'auteur a accordé une licence non exclusive permettant à la Bibliothèque nationale du Canada de reproduire, prêter, distribuer ou vendre des copies de cette thèse sous la forme de microfiche/film, de reproduction sur papier ou sur format électronique.L'auteur conserve la propriété du droit d'auteur qui protège cette thèse. Ni la thèse ni des extraits substantiels de celle-ci ne doivent être imprimés ou autrement reproduits sans son autorisation.Commutation signaling is a bandwidth expanding modulation scheme that is robust to multipath induced intersymbol interference. Surface Acoustic Wave (SAW) technology is very suitable for implementing high.-speed commutation signaling modems. A SAW-based commutation signaling modem for broadband indoor wireless communication is described. The differential coherent detector is a key element since it performs IF matched filtering and differentially coherent demodulation of the received signaL A commutation signaling differential coherent detector has been implemented using SAW and analog silicon technologies. The bit rate is 40 Mb/s, the chip rate is 200 Mel s and the operating frequency (IF frequency) is 1 GHz. A multicarrier commutation signaling modem uses frequency-division multiplexed subcarriers to combine a number of lower rate bit streams in order to achieve high-rate data tra...

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mentioning

confidence: 83%

A SAW-based commutation signaling modem for broadband indoor wireless communication

Kipens

Leib²,

Saw³

et al. 1998

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…• SAW transversal filters using three-phase unidirectional transducers (UDTs) [5,15,24,25,30,33] and/or withdrawal weighting [19], • SAW matched filters and correlators [4,6,31,34], • Tunable SAW filters [13,18,26], • Programmable filters using chirp-Z transform [27], • SAW delay lines and oscillators [11], etc.…”

Section: IImentioning

confidence: 99%

Clinton Sylvester Hartmann: His achievements and our unwritten stories

Hashimoto

2013

2013 IEEE International Ultrasonics Symposium (IUS)

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A brilliant super-star in the SAW community, Clinton Sylvester Hartmann passed away in Dallas, TX, on February 4, 2013, at the age of 68. This article reviews Clinton's professional career and achievements at first, and then a few stories between Clinton and me are given. The stories tell how deeply Clinton contributed to my career up and early achievements. They also show how Clinton motivated, trained, and directed one young engineer.

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“…The first two are the most significant while the last two are relatively small [10]. The Insertion Loss is the logarithmic ratio of the power delivered to the load impedance before the filter is inserted to the power delivered to the load impedance after the filter is inserted.…”

Section: The Insertion Loss Of the Distortionless Saw Duplexer Fomentioning

confidence: 99%

“…10) shows the transfer function of the ideal distortionless SAW band pass filter in terms of sine integral function Si (u) and is derived by the convolution technique Sinc Integral functionV. The Transfer Function of the distortionless SAW duplexer for IS'95, GSM and UMTS mobile systems1-The transfer functions of the transmitter and receiver, equation(10)are plotted for different mobile systems using different window lengths (0.2 μ sec and 2 μ sec) whereFig.4.…”

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confidence: 99%

The transfer function of the distortionless SAW duplexer for IS’95, GSM and UMTS mobile systems

Shafik

Zaghlool

Shennawy

2008

2008 National Radio Science Conference

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This paper presents the transfer function of three mobile systems (IS'95, GSM and UMTS) of the distortionless surface acoustic wave duplexer for different window lengths (0.2 μ sec and 2.0 μ sec) using the Fourier transform convolution technique. The closed form of the transfer function of the systems is expressed in terms of the sine integral function. The surface acoustic wave duplexer is considered the main part of the mobile communication devices because of its advantages (small size, high reliability, low cost, high quality factor, temperature stability, wide dynamic range, linear phase response, ruggedness, high stability, reproducibility and achieve superior performance bandwidth). The obtained results show the comparison between the performances of these three mobile systems, the Fresnel ripples in the pass bands and Gibbs ripples in the stop bands are decreased by increasing the window length (SAW transducer time length).

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Evaluation of Digitally Coded Acoustic Surface-Wave Matched Filters

Cited by 36 publications

References 13 publications

A SAW-based commutation signaling modem for broadband indoor wireless communication

A SAW-based commutation signaling modem for broadband indoor wireless communication

Clinton Sylvester Hartmann: His achievements and our unwritten stories

The transfer function of the distortionless SAW duplexer for IS’95, GSM and UMTS mobile systems

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Evaluation of Digitally Coded Acoustic Surface-Wave Matched Filters

Cited by 36 publications

References 13 publications

A SAW-based commutation signaling modem for broadband indoor wireless communication

A SAW-based commutation signaling modem for broadband indoor wireless communication

Clinton Sylvester Hartmann: His achievements and our unwritten stories

The transfer function of the distortionless SAW duplexer for IS&#x2019;95, GSM and UMTS mobile systems

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The transfer function of the distortionless SAW duplexer for IS’95, GSM and UMTS mobile systems