Design Method for Quasi-Optimal Multiband Branch-Line Couplers
Artikel i vetenskaplig tidskrift, 2014

In this article, the design approach, the implementation, and experimental results of multiband branch-line couplers operating at arbitrary frequencies are presented. The conventional branch-line coupler structure is adapted to multiband operation by shunting its four ports with multiband reactive networks. The performance of the proposed multiband couplers is theoretically analyzed and optimized through the even-odd mode circuit analysis. Dual-band (2.4-3.5 GHz), triple-band (1.5-2.4-4.2 GHz), and quad-band (1.5-2.4-3.5 GHz) microstrip branch-line couplers have been realized and tested to verify the design method. The good experimental results (input return loss greater than 15 dB and amplitude imbalance lower than 0.7 dB) show excellent agreement with theoretical and simulated ones, thus validating the proposed approach.

HYBRID

TRANSMISSION-LINES

coupler

multiband

branch-line

balanced

AMPLIFIER

passive

DUAL-BAND

Författare

L. Piazzon

Universita degli Studi di Roma Tor Vergata

Paul Saad

GigaHertz Centrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

P. Colantonio

Universita degli Studi di Roma Tor Vergata

F. Giannini

Universita degli Studi di Roma Tor Vergata

Kristoffer Andersson

GigaHertz Centrum

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

GigaHertz Centrum

International Journal of RF and Microwave Computer-Aided Engineering

1096-4290 (ISSN) 1099-047X (eISSN)

Vol. 24 117-129

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1002/mmce.20723