A Signal-to-Noise Enhancer with Extended Bandwidth Using Two MSSW Filters and Two 90<cd0216b.gif>Hybrids

Youhei ISHIKAWA; Toshihiro NOMOTO; Takekazu OKADA; Satoru SHINMURA; Fumio KANAYA; Shinichiro ICHIGUCHI; Toshihito UMEGAKI

A Signal-to-Noise Enhancer with Extended Bandwidth Using Two MSSW Filters and Two 90Hybrids

Youhei ISHIKAWA, Toshihiro NOMOTO, Takekazu OKADA, Satoru SHINMURA, Fumio KANAYA, Shinichiro ICHIGUCHI, Toshihito UMEGAKI

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A signal-to-noise enhancer with a bandwidth that is six times as wide as that of the conventional type is presented. A new circuit construction, the combination of two MSSW filters which have the same insertion loss in the broadband and two 90 hybrids, is effective to remarkably extend the bandwidth. The enhancement of the enhancer amounts to 20 dB in the operating frequency range of 1.9 GHz150 MHz in 0 to 60 degrees centigrade. This enhancer has accomplished FM threshold extension because the S/N is improved by 1 to 7 dB below the C/N of 9 dB. It was demonstrated that this new enhancer is effective for noise reduction in practical DBS reception.

Publication: IEICE TRANSACTIONS on Electronics Vol.E78-C No.8 pp.1026-1032

Publication Date: 1995/08/25

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Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Technology)

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Youhei ISHIKAWA, Toshihiro NOMOTO, Takekazu OKADA, Satoru SHINMURA, Fumio KANAYA, Shinichiro ICHIGUCHI, Toshihito UMEGAKI, "A Signal-to-Noise Enhancer with Extended Bandwidth Using Two MSSW Filters and Two 90Hybrids" in IEICE TRANSACTIONS on Electronics, vol. E78-C, no. 8, pp. 1026-1032, August 1995, doi: .
Abstract: A signal-to-noise enhancer with a bandwidth that is six times as wide as that of the conventional type is presented. A new circuit construction, the combination of two MSSW filters which have the same insertion loss in the broadband and two 90 hybrids, is effective to remarkably extend the bandwidth. The enhancement of the enhancer amounts to 20 dB in the operating frequency range of 1.9 GHz150 MHz in 0 to 60 degrees centigrade. This enhancer has accomplished FM threshold extension because the S/N is improved by 1 to 7 dB below the C/N of 9 dB. It was demonstrated that this new enhancer is effective for noise reduction in practical DBS reception.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e78-c_8_1026/_p

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@ARTICLE{e78-c_8_1026,
author={Youhei ISHIKAWA, Toshihiro NOMOTO, Takekazu OKADA, Satoru SHINMURA, Fumio KANAYA, Shinichiro ICHIGUCHI, Toshihito UMEGAKI, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Signal-to-Noise Enhancer with Extended Bandwidth Using Two MSSW Filters and Two 90Hybrids},
year={1995},
volume={E78-C},
number={8},
pages={1026-1032},
abstract={A signal-to-noise enhancer with a bandwidth that is six times as wide as that of the conventional type is presented. A new circuit construction, the combination of two MSSW filters which have the same insertion loss in the broadband and two 90 hybrids, is effective to remarkably extend the bandwidth. The enhancement of the enhancer amounts to 20 dB in the operating frequency range of 1.9 GHz150 MHz in 0 to 60 degrees centigrade. This enhancer has accomplished FM threshold extension because the S/N is improved by 1 to 7 dB below the C/N of 9 dB. It was demonstrated that this new enhancer is effective for noise reduction in practical DBS reception.},
keywords={},
doi={},
ISSN={},
month={August},}

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TY - JOUR
TI - A Signal-to-Noise Enhancer with Extended Bandwidth Using Two MSSW Filters and Two 90Hybrids
T2 - IEICE TRANSACTIONS on Electronics
SP - 1026
EP - 1032
AU - Youhei ISHIKAWA
AU - Toshihiro NOMOTO
AU - Takekazu OKADA
AU - Satoru SHINMURA
AU - Fumio KANAYA
AU - Shinichiro ICHIGUCHI
AU - Toshihito UMEGAKI
PY - 1995
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E78-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 1995
AB - A signal-to-noise enhancer with a bandwidth that is six times as wide as that of the conventional type is presented. A new circuit construction, the combination of two MSSW filters which have the same insertion loss in the broadband and two 90 hybrids, is effective to remarkably extend the bandwidth. The enhancement of the enhancer amounts to 20 dB in the operating frequency range of 1.9 GHz150 MHz in 0 to 60 degrees centigrade. This enhancer has accomplished FM threshold extension because the S/N is improved by 1 to 7 dB below the C/N of 9 dB. It was demonstrated that this new enhancer is effective for noise reduction in practical DBS reception.
ER -