The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
인쇄회로기판(PCB)과 같은 일반적인 도체 재료로 만들어진 평면 회로를 사용하여 주파수 직사각형 특성을 구현하는 것은 어렵습니다. 그 이유는 공진기의 낮은 무부하 품질 인자의 영향으로 주파수 응답의 모서리가 둥글게 되기 때문입니다. 직사각형 주파수 특성은 일반적으로 평탄한 이득 특성을 갖는 저잡음 증폭기(LNA)와 무부하 품질 계수가 높은 공진기를 갖춘 고차 대역 통과 필터(BPF)에 의해 구현됩니다. 여기서는 원하는 특성을 구현하기 위해 LNA와 PCB로 만든 XNUMX차 평면 통과대역 BPF를 사용합니다. 먼저 BPF로 인한 삽입 손실의 영향을 확인하기 위해 신호 및 잡음 전력을 계산합니다. 다음으로, 이 연구를 위해 적절한 LNA가 개발되지 않았기 때문에 LNA의 설계 및 제작에 대해 설명합니다. 마지막으로 제작된 LNA와 제작된 평탄한 통과대역 BPF를 결합한 회로로 직사각형 주파수 특성을 나타낸다. 평탄한 통과대역 BPF 기법을 사용하여 직사각형 주파수 특성을 구현할 수 있음을 보여줍니다.
Tomohiro TSUKUSHI
the University of Electro-Communications
Satoshi ONO
the University of Electro-Communications
Koji WADA
the University of Electro-Communications
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Tomohiro TSUKUSHI, Satoshi ONO, Koji WADA, "Realization of Rectangular Frequency Characteristics by the Effects of a Low-Noise Amplifier and Flat Passband Bandpass Filter" in IEICE TRANSACTIONS on Electronics,
vol. E104-C, no. 10, pp. 568-575, October 2021, doi: 10.1587/transele.2021MMP0007.
Abstract: Realizing frequency rectangular characteristics using a planar circuit made of a normal conductor material such as a printed circuit board (PCB) is difficult. The reason is that the corners of the frequency response are rounded by the effect of the low unloaded quality factors of the resonators. Rectangular frequency characteristics are generally realized by a low-noise amplifier (LNA) with flat gain characteristics and a high-order bandpass filter (BPF) with resonators having high unloaded quality factors. Here, we use an LNA and a fourth-order flat passband BPF made of a PCB to realize the desired characteristics. We first calculate the signal and noise powers to confirm any effects from insertion loss caused by the BPF. Next, we explain the design and fabrication of an LNA, since no proper LNAs have been developed for this research. Finally, the rectangular frequency characteristics are shown by a circuit combining the fabricated LNA and the fabricated flat passband BPF. We show that rectangular frequency characteristics can be realized using a flat passband BPF technique.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2021MMP0007/_p
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@ARTICLE{e104-c_10_568,
author={Tomohiro TSUKUSHI, Satoshi ONO, Koji WADA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Realization of Rectangular Frequency Characteristics by the Effects of a Low-Noise Amplifier and Flat Passband Bandpass Filter},
year={2021},
volume={E104-C},
number={10},
pages={568-575},
abstract={Realizing frequency rectangular characteristics using a planar circuit made of a normal conductor material such as a printed circuit board (PCB) is difficult. The reason is that the corners of the frequency response are rounded by the effect of the low unloaded quality factors of the resonators. Rectangular frequency characteristics are generally realized by a low-noise amplifier (LNA) with flat gain characteristics and a high-order bandpass filter (BPF) with resonators having high unloaded quality factors. Here, we use an LNA and a fourth-order flat passband BPF made of a PCB to realize the desired characteristics. We first calculate the signal and noise powers to confirm any effects from insertion loss caused by the BPF. Next, we explain the design and fabrication of an LNA, since no proper LNAs have been developed for this research. Finally, the rectangular frequency characteristics are shown by a circuit combining the fabricated LNA and the fabricated flat passband BPF. We show that rectangular frequency characteristics can be realized using a flat passband BPF technique.},
keywords={},
doi={10.1587/transele.2021MMP0007},
ISSN={1745-1353},
month={October},}
부
TY - JOUR
TI - Realization of Rectangular Frequency Characteristics by the Effects of a Low-Noise Amplifier and Flat Passband Bandpass Filter
T2 - IEICE TRANSACTIONS on Electronics
SP - 568
EP - 575
AU - Tomohiro TSUKUSHI
AU - Satoshi ONO
AU - Koji WADA
PY - 2021
DO - 10.1587/transele.2021MMP0007
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E104-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2021
AB - Realizing frequency rectangular characteristics using a planar circuit made of a normal conductor material such as a printed circuit board (PCB) is difficult. The reason is that the corners of the frequency response are rounded by the effect of the low unloaded quality factors of the resonators. Rectangular frequency characteristics are generally realized by a low-noise amplifier (LNA) with flat gain characteristics and a high-order bandpass filter (BPF) with resonators having high unloaded quality factors. Here, we use an LNA and a fourth-order flat passband BPF made of a PCB to realize the desired characteristics. We first calculate the signal and noise powers to confirm any effects from insertion loss caused by the BPF. Next, we explain the design and fabrication of an LNA, since no proper LNAs have been developed for this research. Finally, the rectangular frequency characteristics are shown by a circuit combining the fabricated LNA and the fabricated flat passband BPF. We show that rectangular frequency characteristics can be realized using a flat passband BPF technique.
ER -