Szczegóły publikacji
Opis bibliograficzny
Impedance transforming rat-race couplers with modified Lange section / Robert SMOLARZ, Krzysztof WINCZA, Sławomir GRUSZCZYŃSKI // Journal of Electromagnetic Waves and Applications ; ISSN 0920-5071. — 2018 — vol. 32 no. 8, s. 972–983. — Bibliogr. s. 982–983, Abstr. — Publikacja dostępna online od: 2017-12-06
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 112958 |
|---|---|
| Data dodania do BaDAP | 2018-04-11 |
| Tekst źródłowy | URL |
| DOI | 10.1080/09205071.2017.1411836 |
| Rok publikacji | 2018 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Electromagnetic Waves and Applications |
Abstract
The relation between load impedances and the characteristic impedance of the rat-race ring has been derived. To minimize the circuit size, the 270°-long section has been replaced by a shorted coupled-line section. Moreover, to achieve appropriate coupling coefficient in the required coupled-line section, a modified Lange structure consisting of five-coupled lines has been applied. Furthermore, the second structure has been proposed having improved operational bandwidth, in which coupled-line matching sections are added. The theoretical analysis has been verified by measurements of the fabricated rat-race couplers operating at the center frequency 1 GHz. The designed couplers transforms 50 Ω input impedance into 10 Ω, which proves their practical applications.
