A bandwidth enhancement technique for mobile handset antennas using wavetraps

A novel technique for enhancing the impedance bandwidth of wireless terminal antennas is presented. By introducing resonant short circuit transmission lines to the long sides of the chassis edges, an effective electrical shortening of the terminal ground plane is achieved. This effect has been used...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 54; no. 8; pp. 2226 - 2233
Main Authors Lindberg, P., Ojefors, E.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.08.2006
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
3G mobile communication
Antennas
Applied sciences
Bandwidth
broadband communication
Distributed parameter circuits
Equipments and installations
Exact sciences and technology
Frequency
Ground plane
GSM
High frequencies
Impedance
microstrip antennas
Mobile antennas
Mobile handsets
Mobile radiocommunication systems
Radiocommunications
Resonance
RLC circuits
Services and terminals of telecommunications
Short circuits
Simulation
Systems, networks and services of telecommunications
TECHNOLOGY
TEKNIKVETENSKAP
Telecommunications
Telecommunications and information theory
Telephone. Videophone
Terminals
Transmission and modulation (techniques and equipments)
Performance evaluation
Mobile radiocommunication
Mobile phone
GSM system
Wireless telecommunication
Resonant circuit
Wide band transmission
Short circuit
Transmission line
Simulation
broadband communication
Microstrip antennas
Bandwidth
UMTS system
High frequency
Mobile antenna
mobile antennas
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Summary:A novel technique for enhancing the impedance bandwidth of wireless terminal antennas is presented. By introducing resonant short circuit transmission lines to the long sides of the chassis edges, an effective electrical shortening of the terminal ground plane is achieved. This effect has been used to realize terminal ground planes with resonant lengths at high frequencies, such as GSM 1800/1900 MHz or UMTS 2 GHz, thereby extending the impedance bandwidth. The proposed technique has been validated by simulations and measurements. Three typical applications are presented where the introduction of wavetraps improves the bandwidth and/or in-band performance
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-926X
1558-2221
1558-2221
DOI:10.1109/TAP.2006.879211