| Presentation | 2020-11-26 A Study on Analytical Solutions of Triple-Stage Wideband LC Matching Circuits Satoshi Tanaka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As mobile phones progress in the third, fourth, and fifth generations, the frequency bands used in mobile phones have increased dramatically. RF components for mobile phone terminals are becoming more integrated to cope with this increasing frequency band while suppressing the increase in size. In the case of power amplifier (PA) mounted on the RF component, it is necessary to correspond many frequency bands in one PA. In this case, the wideband of the matched circuit is a typical one of the technical problems of PA. To date, the author focused on LC matching circuits composed of inductors and capacitors, and reported that there is a prospect of achieving about 30% and 60% of fractional bandwidth for two-stage and three-stage LC matching circuits. In previous reports, the matching conditions at the design frequency were obtained analytically, and the wideband conditions were discovered and searched based on numerical calculations. We have also reported a method to efficiently determine the element value of the two-stage matching circuit based on the frequency differentiation of the input impedance of the matching circuit. This time, we report an example of applying the previously proposed method to a three-stage matching circuit. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile phone / Power amplifier / Matching circuit / RF / LC |
| Paper # | CAS2020-29,MSS2020-21 |
| Date of Issue | 2020-11-18 (CAS, MSS) |
| Conference Information | |
| Committee | MSS / CAS / IPSJ-AL |
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| Conference Date | 2020/11/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shigemasa Takai(Osaka Univ.) / Yasuhiro Takashima(Univ. of Kitakyushu) |
| Vice Chair | Atsuo Ozaki(Osaka Inst. of Tech.) / Hiroki Sato(Sony LSI Design) |
| Secretary | Atsuo Ozaki(Setsunan Univ.) / Hiroki Sato(Hokkaido Univ.) / (Yamanashi Univ.) |
| Assistant | Naoki Hayashi(Osaka Univ.) / Motoi Yamaguchi(TECHNOPRO) / Yohei Nakamura(Hitachi) |
| Paper Information | |
| Registration To | Technical Committee on Mathematical Systems Science and its applications / Technical Committee on Circuits and Systems / Special Interest Group on Algorithms |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Analytical Solutions of Triple-Stage Wideband LC Matching Circuits |
| Sub Title (in English) | |
| Keyword(1) | Mobile phone |
| Keyword(2) | Power amplifier |
| Keyword(3) | Matching circuit |
| Keyword(4) | RF |
| Keyword(5) | LC |
| 1st Author's Name | Satoshi Tanaka |
| 1st Author's Affiliation | Murata Manufacturing Co., Ltd.(Murata Manufacturing) |
| Date | 2020-11-26 |
| Paper # | CAS2020-29,MSS2020-21 |
| Volume (vol) | vol.120 |
| Number (no) | CAS-245,MSS-246 |
| Page | pp.pp.56-61(CAS), pp.56-61(MSS), |
| #Pages | 6 |
| Date of Issue | 2020-11-18 (CAS, MSS) |