Dual-band bandpass filter using helical resonators

Ruwan Gajaweera; Yahui Wu; Jeremy Kenneth Arthur Everard

doi:10.1109/EuMC.2016.7824322

Dual-band bandpass filter using helical resonators

Ruwan Gajaweera, Yahui Wu, Jeremy Kenneth Arthur Everard

Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper demonstrates non-uniform pitch helical resonators for realization of dual-band bandpass filters. By modifying the pitch and coil diameter of conventional uniform pitch helical resonators, the desired dual-band frequencies can be obtained. The external coupling and inter-resonator coupling structure are also illustrated. A non-uniform pitch helical resonator was designed and fabricated with unloaded quality-factor (>900) for both passbands. A 2nd order Butterworth filter that has passbands at 840 MHz and 2590 MHz has been designed. The simulation results show that the filter has a good selectivity with 6% and 4.3% fractional bandwidth at the passbands, respectively. The good power handling capability also suggests that the filter is applicable for microcell/picocell LTE base stations.

Original language	English
Title of host publication	2016 46th European Microwave Conference (EuMC)
Publisher	IEEE
Pages	237-240
Number of pages	4
ISBN (Electronic)	9782874870439
DOIs	https://doi.org/10.1109/EuMC.2016.7824322
Publication status	Published - 19 Jan 2017

Access to Document

10.1109/EuMC.2016.7824322

Cite this

@inproceedings{d017f45edaa840a69e351992f9859c6f,

title = "Dual-band bandpass filter using helical resonators",

abstract = "This paper demonstrates non-uniform pitch helical resonators for realization of dual-band bandpass filters. By modifying the pitch and coil diameter of conventional uniform pitch helical resonators, the desired dual-band frequencies can be obtained. The external coupling and inter-resonator coupling structure are also illustrated. A non-uniform pitch helical resonator was designed and fabricated with unloaded quality-factor (>900) for both passbands. A 2nd order Butterworth filter that has passbands at 840 MHz and 2590 MHz has been designed. The simulation results show that the filter has a good selectivity with 6% and 4.3% fractional bandwidth at the passbands, respectively. The good power handling capability also suggests that the filter is applicable for microcell/picocell LTE base stations. ",

author = "Ruwan Gajaweera and Yahui Wu and Everard, {Jeremy Kenneth Arthur}",

year = "2017",

month = jan,

day = "19",

doi = "10.1109/EuMC.2016.7824322",

language = "English",

pages = "237--240",

booktitle = "2016 46th European Microwave Conference (EuMC)",

publisher = "IEEE",

address = "United States",

}

TY - GEN

T1 - Dual-band bandpass filter using helical resonators

AU - Gajaweera, Ruwan

AU - Wu, Yahui

AU - Everard, Jeremy Kenneth Arthur

PY - 2017/1/19

Y1 - 2017/1/19

N2 - This paper demonstrates non-uniform pitch helical resonators for realization of dual-band bandpass filters. By modifying the pitch and coil diameter of conventional uniform pitch helical resonators, the desired dual-band frequencies can be obtained. The external coupling and inter-resonator coupling structure are also illustrated. A non-uniform pitch helical resonator was designed and fabricated with unloaded quality-factor (>900) for both passbands. A 2nd order Butterworth filter that has passbands at 840 MHz and 2590 MHz has been designed. The simulation results show that the filter has a good selectivity with 6% and 4.3% fractional bandwidth at the passbands, respectively. The good power handling capability also suggests that the filter is applicable for microcell/picocell LTE base stations.

AB - This paper demonstrates non-uniform pitch helical resonators for realization of dual-band bandpass filters. By modifying the pitch and coil diameter of conventional uniform pitch helical resonators, the desired dual-band frequencies can be obtained. The external coupling and inter-resonator coupling structure are also illustrated. A non-uniform pitch helical resonator was designed and fabricated with unloaded quality-factor (>900) for both passbands. A 2nd order Butterworth filter that has passbands at 840 MHz and 2590 MHz has been designed. The simulation results show that the filter has a good selectivity with 6% and 4.3% fractional bandwidth at the passbands, respectively. The good power handling capability also suggests that the filter is applicable for microcell/picocell LTE base stations.

U2 - 10.1109/EuMC.2016.7824322

DO - 10.1109/EuMC.2016.7824322

M3 - Conference contribution

SP - 237

EP - 240

BT - 2016 46th European Microwave Conference (EuMC)

PB - IEEE

ER -