Size miniaturization of 3 dB branch line coupler by using open stubs

Author

Bhowmik, Priyansha ; Moyra, Tamasi ; Deb, Partha Kumar

Author_Institution

Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Agartala, India

fYear

2015

fDate

19-20 Feb. 2015

Firstpage

642

Lastpage

645

Abstract

In this paper a miniaturized 3 dB branch line coupler (BLC) is proposed. The miniaturization is done by adding open stub to the series and parallel transmission line of the conventional 3 dB coupler such that the proposed T-shaped structure is equivalent to the conventional 3 dB branch line coupler. The equivalent circuit is obtained by comparing the ABCD parameters of the T-shaped and conventional transmission line. As the area is less there is a possibility of coupling between the stubs of series and parallel transmission line. Based on the flexibility of the designer the structure is designed in a way to minimal the effect of coupling between the stubs of the series and parallel transmission lines. The proposed structure has reduced size than the conventional coupler and has fair response at 2.5 GHz.

Keywords

coupled transmission lines; equivalent circuits; waveguide couplers; ABCD parameters; BLC; T-shaped transmission line; branch line coupler; equivalent circuit; frequency 2.5 GHz; parallel transmission line; series transmission line; size miniaturization; Bandwidth; Couplers; Couplings; Impedance; Mathematical model; Ports (Computers); Power transmission lines; 3 dB branch line coupler; 3 dB miniaturized branch line coupler; BLC; open stub; reduced size 3 dB branch line coupler;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Integrated Networks (SPIN), 2015 2nd International Conference on

Conference_Location

Noida

Print_ISBN

978-1-4799-5990-7

Type

conf

DOI

10.1109/SPIN.2015.7095279

Filename

7095279