A New Tapping Design for Low-Distortion SAW Tapped Delay Lines

Jiro TEMMYO; Takahiro INAMURA; Isamu KOTAKA; Shokichiro YOSHIKAWA

A New Tapping Design for Low-Distortion SAW Tapped Delay Lines

Jiro TEMMYO, Takahiro INAMURA, Isamu KOTAKA, Shokichiro YOSHIKAWA

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Frequency characteristics of SAW tapped delay lines (TDL's) with equal tap spacing and in-line array are investigated. It is found that reflected SAW echo signals in SAW TLD's cause pulse-like ripples and sharp stopband distortions periodically in the frequency passbands. Tapping design techniques are proposed to remove spurious interference distortion influences on SAW TDL frequency responses. Their applicability is confirmed experimentally. Typical features of a SAW TDL with 101 taps at a 20 MHz bit rate employing 128 rotated Y-cut and X-propagation LiNbO₃ substrate are as follows: center frequency is 55.4 MHz, frequency bandwidth is 10 MHz, insertion losses are 3239 dB, and ripples in the passband are about 4 dB.

Publication: IEICE TRANSACTIONS on transactions Vol.E62-E No.11 pp.775-778

Publication Date: 1979/11/25

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Type of Manuscript: PAPER

Category: Other Devices

Authors

Jiro TEMMYO
Takahiro INAMURA
Isamu KOTAKA
Shokichiro YOSHIKAWA

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Jiro TEMMYO, Takahiro INAMURA, Isamu KOTAKA, Shokichiro YOSHIKAWA, "A New Tapping Design for Low-Distortion SAW Tapped Delay Lines" in IEICE TRANSACTIONS on transactions, vol. E62-E, no. 11, pp. 775-778, November 1979, doi: .
Abstract: Frequency characteristics of SAW tapped delay lines (TDL's) with equal tap spacing and in-line array are investigated. It is found that reflected SAW echo signals in SAW TLD's cause pulse-like ripples and sharp stopband distortions periodically in the frequency passbands. Tapping design techniques are proposed to remove spurious interference distortion influences on SAW TDL frequency responses. Their applicability is confirmed experimentally. Typical features of a SAW TDL with 101 taps at a 20 MHz bit rate employing 128 rotated Y-cut and X-propagation LiNbO₃ substrate are as follows: center frequency is 55.4 MHz, frequency bandwidth is 10 MHz, insertion losses are 3239 dB, and ripples in the passband are about 4 dB.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e62-e_11_775/_p

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@ARTICLE{e62-e_11_775,
author={Jiro TEMMYO, Takahiro INAMURA, Isamu KOTAKA, Shokichiro YOSHIKAWA, },
journal={IEICE TRANSACTIONS on transactions},
title={A New Tapping Design for Low-Distortion SAW Tapped Delay Lines},
year={1979},
volume={E62-E},
number={11},
pages={775-778},
abstract={Frequency characteristics of SAW tapped delay lines (TDL's) with equal tap spacing and in-line array are investigated. It is found that reflected SAW echo signals in SAW TLD's cause pulse-like ripples and sharp stopband distortions periodically in the frequency passbands. Tapping design techniques are proposed to remove spurious interference distortion influences on SAW TDL frequency responses. Their applicability is confirmed experimentally. Typical features of a SAW TDL with 101 taps at a 20 MHz bit rate employing 128 rotated Y-cut and X-propagation LiNbO₃ substrate are as follows: center frequency is 55.4 MHz, frequency bandwidth is 10 MHz, insertion losses are 3239 dB, and ripples in the passband are about 4 dB.},
keywords={},
doi={},
ISSN={},
month={November},}

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TY - JOUR
TI - A New Tapping Design for Low-Distortion SAW Tapped Delay Lines
T2 - IEICE TRANSACTIONS on transactions
SP - 775
EP - 778
AU - Jiro TEMMYO
AU - Takahiro INAMURA
AU - Isamu KOTAKA
AU - Shokichiro YOSHIKAWA
PY - 1979
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E62-E
IS - 11
JA - IEICE TRANSACTIONS on transactions
Y1 - November 1979
AB - Frequency characteristics of SAW tapped delay lines (TDL's) with equal tap spacing and in-line array are investigated. It is found that reflected SAW echo signals in SAW TLD's cause pulse-like ripples and sharp stopband distortions periodically in the frequency passbands. Tapping design techniques are proposed to remove spurious interference distortion influences on SAW TDL frequency responses. Their applicability is confirmed experimentally. Typical features of a SAW TDL with 101 taps at a 20 MHz bit rate employing 128 rotated Y-cut and X-propagation LiNbO₃ substrate are as follows: center frequency is 55.4 MHz, frequency bandwidth is 10 MHz, insertion losses are 3239 dB, and ripples in the passband are about 4 dB.
ER -