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
5세대 휴대폰이 보급되면서 PA(전력증폭기)의 출력전력 증가가 중요해졌고, 최근에는 전원전압에 대한 출력전압 진폭을 높일 수 있는 차동증폭기가 국내에서부터 검토되고 있다. 전력합성의 관점. 차동 PA의 경우 전압 진폭의 장점 외에도 부하 임피던스를 싱글 엔드 PA의 4배로 설정할 수 있어 기생 저항의 영향을 줄일 수 있습니다. 차동 PA에 대한 연구와 함께 기존에 널리 사용되었던 LC 매칭 회로 외에도 많은 트랜스포머 매칭 회로가 연구되었다. 트랜스포머 매칭 회로는 차동-단일 변환을 쉽게 구현할 수 있으며, 트랜스포머 매칭 회로는 차동 PA에 없어서는 안 될 기술이다. LC 매칭 회로와 마찬가지로 트랜스포머 매칭 회로의 대역폭을 넓히는 것이 문제이다. 본 논문에서는 트랜스포머에 입출력 션트 커패시턴스를 추가하여 기본 트랜스포머 정합회로의 특성을 분석하고 대역폭 개선 조건을 규명하였다. 또한, FBW(fractional Bandwidth)를 LC 2단 매칭 회로와 비교함으로써 FBW가 경쟁력을 가질 수 있음을 보여주었다.
Satoshi TANAKA
Murata Manufacturing Co., Ltd.
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Satoshi TANAKA, "A Study on the Bandwidth of the Transformer Matching Circuits" in IEICE TRANSACTIONS on Fundamentals,
vol. E105-A, no. 5, pp. 844-852, May 2022, doi: 10.1587/transfun.2021GCP0002.
Abstract: With the spread of the 5th generation mobile phone, the increase of the output power of PA (power amplifier) has become important, and in recent years, differential amplifiers that can increase the output voltage amplitude for the power supply voltage have been examined from the viewpoint of power synthesis. In the case of a differential PA, in addition to the advantage of voltage amplitude, the load impedance can be set 4 times as much as that of a single-ended PA, which makes it possible to reduce the impact of parasitic resistance. With the study of the differential PA, many transformer matching circuits have been studied in addition to the LC matching circuits that have been widely used in the past. The transformer matching circuit can easily realize the differential-single conversion, and the transformer matching circuit is an indispensable technology in the differential PA. As with the LC matching circuit, widening the bandwidth of the transformer matching circuit is at issue. In this paper, characteristics of basic transformer matching circuits are analyzed by adding input/output shunt capacitance to transformers and the conditions of bandwidth improvement are clarified. In addition, by comparing the FBW (fractional bandwidth) with the LC 2-stage matching circuit, it is shown that the FBW can be competitive.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2021GCP0002/_p
부
@ARTICLE{e105-a_5_844,
author={Satoshi TANAKA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Study on the Bandwidth of the Transformer Matching Circuits},
year={2022},
volume={E105-A},
number={5},
pages={844-852},
abstract={With the spread of the 5th generation mobile phone, the increase of the output power of PA (power amplifier) has become important, and in recent years, differential amplifiers that can increase the output voltage amplitude for the power supply voltage have been examined from the viewpoint of power synthesis. In the case of a differential PA, in addition to the advantage of voltage amplitude, the load impedance can be set 4 times as much as that of a single-ended PA, which makes it possible to reduce the impact of parasitic resistance. With the study of the differential PA, many transformer matching circuits have been studied in addition to the LC matching circuits that have been widely used in the past. The transformer matching circuit can easily realize the differential-single conversion, and the transformer matching circuit is an indispensable technology in the differential PA. As with the LC matching circuit, widening the bandwidth of the transformer matching circuit is at issue. In this paper, characteristics of basic transformer matching circuits are analyzed by adding input/output shunt capacitance to transformers and the conditions of bandwidth improvement are clarified. In addition, by comparing the FBW (fractional bandwidth) with the LC 2-stage matching circuit, it is shown that the FBW can be competitive.},
keywords={},
doi={10.1587/transfun.2021GCP0002},
ISSN={1745-1337},
month={May},}
부
TY - JOUR
TI - A Study on the Bandwidth of the Transformer Matching Circuits
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 844
EP - 852
AU - Satoshi TANAKA
PY - 2022
DO - 10.1587/transfun.2021GCP0002
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E105-A
IS - 5
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - May 2022
AB - With the spread of the 5th generation mobile phone, the increase of the output power of PA (power amplifier) has become important, and in recent years, differential amplifiers that can increase the output voltage amplitude for the power supply voltage have been examined from the viewpoint of power synthesis. In the case of a differential PA, in addition to the advantage of voltage amplitude, the load impedance can be set 4 times as much as that of a single-ended PA, which makes it possible to reduce the impact of parasitic resistance. With the study of the differential PA, many transformer matching circuits have been studied in addition to the LC matching circuits that have been widely used in the past. The transformer matching circuit can easily realize the differential-single conversion, and the transformer matching circuit is an indispensable technology in the differential PA. As with the LC matching circuit, widening the bandwidth of the transformer matching circuit is at issue. In this paper, characteristics of basic transformer matching circuits are analyzed by adding input/output shunt capacitance to transformers and the conditions of bandwidth improvement are clarified. In addition, by comparing the FBW (fractional bandwidth) with the LC 2-stage matching circuit, it is shown that the FBW can be competitive.
ER -