Combined spiral-discone broadband antenna for indoor applications

Author

Januszkiewicz, Lukasz ; Hausman, Slawomir

Author_Institution

Inst. of Electron., Tech. Univ. Lodz, Poland

Volume

1

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

422

Abstract

A novel design of a broadband omnidirectional antenna is presented. It combines advantages of both the spiral and discone designs. An antenna of this type can find application in indoor radio communication systems. The designed antenna frequency band is suitable for the radio communication services in the indoor environment (GSM 900, GSM 1800, DECT, WLAN). The other advantage of this design is its good impedance match to 50 ohm coaxial transmission lines and undirectional radiation pattern. Two prototypes were made which cover the frequency bands of 650-3000 MHz and 1270-3000 MHz with VSWR<2. The method of moments was applied to calculate radiation characteristics of the antennas. The results of impedance matching and radiation pattern measurements are presented.

Keywords

UHF antennas; antenna radiation patterns; broadband antennas; cellular radio; conical antennas; cordless telephone systems; electric impedance; impedance matching; indoor radio; spiral antennas; wireless LAN; DECT; GSM 1800; GSM 900; WLAN; discone antenna; impedance matching; indoor radio; method of moments; omnidirectional antenna; spiral antenna; spiral-discone broadband antenna; undirectional radiation pattern; Antenna radiation patterns; Broadband antennas; Frequency; GSM; Impedance; Indoor environments; Indoor radio communication; Radio communication; Spirals; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on

Print_ISBN

0-7803-8523-3

Type

conf

DOI

10.1109/PIMRC.2004.1370906

Filename

1370906