Weigel R, Kalabic F, Ostermayer G, Pohl A, Seifert F, Reindl L (1997)
Publication Type: Journal article
Publication year: 1997
Publisher: IEEE
Book Volume: 45
Pages Range: 2486-2492
Journal Issue: 12
DOI: 10.1109/22.643864
We report on the design and performance of surface-acoustic wave (SAW) minimum shift keying (MSK) tapped delay lines using pseudonoise code sequences with a length of 128 chips. As a substrate, X112 rotY-LiTaO3 has been used due to the system requirements of a given CDMA/TDMA (TCDMA) radio communication system. System IF frequency, bandwidth of the major lobe, and integration time of the SAW devices were, respectively, 360 MHz, 63.5 MHz, and 3 us. We used SAW tapped delay lines employing nonweighted as well as cosine-weighted input interdigital transducers incorporating split-fingers. We designed both expander as well as compressor filters attaining very similar experimental results. We found insertion loss values down to 16 dB and amplitude ripples of less than 2 dB. The close-in selectivity was 28 dB.
APA:
Weigel, R., Kalabic, F., Ostermayer, G., Pohl, A., Seifert, F., & Reindl, L. (1997). Design of SAW expander and compressor on LiTaO3 for a TCDMA spread spectrum system. IEEE Transactions on Microwave Theory and Techniques, 45(12), 2486-2492. https://dx.doi.org/10.1109/22.643864
MLA:
Weigel, Robert, et al. "Design of SAW expander and compressor on LiTaO3 for a TCDMA spread spectrum system." IEEE Transactions on Microwave Theory and Techniques 45.12 (1997): 2486-2492.
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