TLM investigation of dielectric-loaded bifilar personal telephone antennas
TLM investigation of dielectric-loaded bifilar personal telephone antennas
- Author(s): G. Nicolaidis ; O. Leisten ; J.C. Vardaxoglou
- DOI: 10.1049/cp:19990005
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- Author(s): G. Nicolaidis ; O. Leisten ; J.C. Vardaxoglou Source: IEE National Conference on Antennas and Propagation, 1999 p. 16 – 19
- Conference: IEE National Conference on Antennas and Propagation
- DOI: 10.1049/cp:19990005
- ISBN: 0 85296 713 6
- Location: York, UK
- Conference date: 31 March-1 April 1999
- Format: PDF
Bifilar miniaturised antenna topologies combine good radiation and input impedance characteristics with regards to the design of personal telephones. In addition, ground-coupling effects are reduced and local to the body fields produce electric and magnetic minima. The current distribution is controlled in such a way that electromagnetic minima occur axially with the operator's body. At present, approximate analytical methods of this antenna geometry are not accurate for predicting the resonance frequency. The main purpose of this paper is to show the outcome of a thorough modelling investigation of the aforementioned antennas by displaying results of their radiative characteristics, as well as the current distribution and reactive fields. The antenna was analysed by means of a time domain transmission line modelling (TLM). This was implemented in package called MicroStripesTM produced by Kimberley Communications Consultants.
Inspec keywords: mobile antennas; time-domain analysis; loop antennas; dielectric-loaded antennas; antenna radiation patterns; current distribution; telephone sets; electric impedance; transmission line theory; digital simulation
Subjects: Single antennas; Transmission line theory
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