Construction Method for Ladder Filters Employing Piezoelectric Ceramic Resonators

Takeshi INOUE; Sadayuki TAKAHASHI; Masatomo YONEZAWA

Construction Method for Ladder Filters Employing Piezoelectric Ceramic Resonators

Takeshi INOUE, Sadayuki TAKAHASHI, Masatomo YONEZAWA

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The construction method for ladder filters employing piezoelectric ceramic resonators, widely used in consumer radio communication equipments, is investigated with the object of obtaining low-cost high-performance filters. For the presented method, the resonant or antiresonant frequencies of the resonators included in a filter are staggered one after another, perceiving that a small difference in these frequencies between electrically adjacent resonators can be tolerated. The allowable frequency limits for this filter are about four times as great as those for a usual filter, designed using the image parameter or near-image parameter method. The filter can exhibit performances equal to the usual filter. The frequency adjustment process for resonators is able to be fairly well curtailed. Filters based on this construction method include ceramic filters for CB transceiver and pocket-bell receiver, which were designed and trially produced. As a result, low-ripple filters with rough frequency adjustment at most were obtained.

Publication: IEICE TRANSACTIONS on transactions Vol.E69-E No.7 pp.788-796

Publication Date: 1986/07/25

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Type of Manuscript: PAPER

Category: Acoustics

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Takeshi INOUE
Sadayuki TAKAHASHI
Masatomo YONEZAWA

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Takeshi INOUE, Sadayuki TAKAHASHI, Masatomo YONEZAWA, "Construction Method for Ladder Filters Employing Piezoelectric Ceramic Resonators" in IEICE TRANSACTIONS on transactions, vol. E69-E, no. 7, pp. 788-796, July 1986, doi: .
Abstract: The construction method for ladder filters employing piezoelectric ceramic resonators, widely used in consumer radio communication equipments, is investigated with the object of obtaining low-cost high-performance filters. For the presented method, the resonant or antiresonant frequencies of the resonators included in a filter are staggered one after another, perceiving that a small difference in these frequencies between electrically adjacent resonators can be tolerated. The allowable frequency limits for this filter are about four times as great as those for a usual filter, designed using the image parameter or near-image parameter method. The filter can exhibit performances equal to the usual filter. The frequency adjustment process for resonators is able to be fairly well curtailed. Filters based on this construction method include ceramic filters for CB transceiver and pocket-bell receiver, which were designed and trially produced. As a result, low-ripple filters with rough frequency adjustment at most were obtained.
URL: https://globals.ieice.org/en_transactions/transactions/10.1587/e69-e_7_788/_p

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@ARTICLE{e69-e_7_788,
author={Takeshi INOUE, Sadayuki TAKAHASHI, Masatomo YONEZAWA, },
journal={IEICE TRANSACTIONS on transactions},
title={Construction Method for Ladder Filters Employing Piezoelectric Ceramic Resonators},
year={1986},
volume={E69-E},
number={7},
pages={788-796},
abstract={The construction method for ladder filters employing piezoelectric ceramic resonators, widely used in consumer radio communication equipments, is investigated with the object of obtaining low-cost high-performance filters. For the presented method, the resonant or antiresonant frequencies of the resonators included in a filter are staggered one after another, perceiving that a small difference in these frequencies between electrically adjacent resonators can be tolerated. The allowable frequency limits for this filter are about four times as great as those for a usual filter, designed using the image parameter or near-image parameter method. The filter can exhibit performances equal to the usual filter. The frequency adjustment process for resonators is able to be fairly well curtailed. Filters based on this construction method include ceramic filters for CB transceiver and pocket-bell receiver, which were designed and trially produced. As a result, low-ripple filters with rough frequency adjustment at most were obtained.},
keywords={},
doi={},
ISSN={},
month={July},}

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TY - JOUR
TI - Construction Method for Ladder Filters Employing Piezoelectric Ceramic Resonators
T2 - IEICE TRANSACTIONS on transactions
SP - 788
EP - 796
AU - Takeshi INOUE
AU - Sadayuki TAKAHASHI
AU - Masatomo YONEZAWA
PY - 1986
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E69-E
IS - 7
JA - IEICE TRANSACTIONS on transactions
Y1 - July 1986
AB - The construction method for ladder filters employing piezoelectric ceramic resonators, widely used in consumer radio communication equipments, is investigated with the object of obtaining low-cost high-performance filters. For the presented method, the resonant or antiresonant frequencies of the resonators included in a filter are staggered one after another, perceiving that a small difference in these frequencies between electrically adjacent resonators can be tolerated. The allowable frequency limits for this filter are about four times as great as those for a usual filter, designed using the image parameter or near-image parameter method. The filter can exhibit performances equal to the usual filter. The frequency adjustment process for resonators is able to be fairly well curtailed. Filters based on this construction method include ceramic filters for CB transceiver and pocket-bell receiver, which were designed and trially produced. As a result, low-ripple filters with rough frequency adjustment at most were obtained.
ER -