Branch-line coupler using planar circuits composed of triangular-patch and strip conductors
| Autor: | Fumio Takeda |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Computer Networks and Communications business.industry Electrical engineering General Physics and Astronomy Characteristic impedance Conductor Laser linewidth Planar Optics Transmission line Characteristic admittance Electrical and Electronic Engineering Center frequency business Electrical conductor |
| Zdroj: | Electronics and Communications in Japan (Part II: Electronics). 89:1-8 |
| ISSN: | 1520-6432 8756-663X |
| DOI: | 10.1002/ecjb.20240 |
| Popis: | A new configuration of inner conductor is presented in this paper for a planar branch-line coupler at high-frequency range where the linewidth is not negligible with respect to the guide wavelength. The high characteristic admittance lines with a wide linewidth deteriorating higher-frequency performances of the branch-line coupler are replaced with an equivalent planar circuit consisting of triangular patches and strip conductors. In this way, it is shown theoretically and experimentally that a 3-dB 90° hybrid is obtained in the high-frequency region in which the ratio of the width of the transmission line with a characteristic impedance of 50Ω to the guide wavelength at the center frequency is about 1.35 times that of the conventional case. © 2006 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 89(5): 1–8, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20240 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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