New technique to design tunable quarter-wave lengt side coupled ring filters for multistandards operation

Author

Othman, Ali ; Barrak, Rim ; Mabrouk, Mohamed

Author_Institution

Higher Sch. of Commun. of Tunis (SUP´COM), Univ. of Carthage, Tunis, Tunisia

fYear

2014

Firstpage

1

Lastpage

5

Abstract

As an important key of Software Defined Radio (SDR) receivers, tunable filters field knows a continuous and a rapid growth to resolve some handicaps in performance like electrical specifications and physical properties, especially in weight and size. In this context, a tunable RF filter is proposed. It is based on the quarter-wave length side coupled ring topology and varactors as tuning elements. The filter is implemented on FR4 substrate. This filter covers four wireless bands: GSM, UMTS, Wi-Fi and LTE Band 7. S parameters simulations show a quite good agreement in terms of electrical specifications.

Keywords

3G mobile communication; Long Term Evolution; cellular radio; microstrip filters; radiofrequency filters; software radio; varactors; wireless LAN; FR4 substrate; GSM; LTE band 7; S parameters simulation; SDR receiver; UMTS; Wi-Fi; electrical specification; multistandards operation; physical property; quarter-wave length side coupled ring filter; quarter-wave length side coupled ring topology; software defined radio; tunable RF filter; varactors; Band-pass filters; Filtering theory; Microwave filters; Radio frequency; Resonator filters; Standards; Topology; microstrip; multistandards; ring filter; tunable filters; varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium (MMS), 2014 14th Mediterranean

Print_ISBN

978-1-4799-7390-3

Type

conf

DOI

10.1109/MMS.2014.7088929

Filename

7088929