Digitally tunable input filter unit for LTE bands

Author

Dufek, Ivo ; Pokorny, Martin

Author_Institution

Dept. of Radioelectron., Brno Univ. of Technol., Brno, Czech Republic

fYear

2013

fDate

11-12 Nov. 2013

Firstpage

273

Lastpage

276

Abstract

This paper deals with the design of the fast tunable filter unit which is intended to be used in combination with a reconfigurable multiband antenna. Proposed filter unit combines classical microstrip technology with digitally tunable capacitors based on the state of the art semiconductor and micromechanical technology. The design of the filter unit is described and its performance is verified by simulations. Results are compared with an equivalent lumped element band pass filter. The tuning performance of the filter-antenna combination is demonstrated.

Keywords

Long Term Evolution; capacitors; digital filters; microstrip filters; multifrequency antennas; LTE band; classical microstrip technology; digitally-tunable capacitors; digitally-tunable input filter unit; equivalent lumped element band pass filter; fast tunable filter unit; filter unit design; filter-antenna combination; micromechanical technology; reconfigurable multiband antenna; semiconductor technology; tuning performance; Antennas; Band-pass filters; Capacitors; Micromechanical devices; Microstrip filters; Resonator filters; Tuning; CMOS capacitor; GSM; LTE; MEMS capacitor; agile front-end; tunable filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Conference (LAPC), 2013 Loughborough

Conference_Location

Loughborough

Type

conf

DOI

10.1109/LAPC.2013.6711899

Filename

6711899