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SPLaSK timestamp

Techniques for enhancing efficiency of cellular phone antenna
tm3132712298
Category of Technology / Product
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By choosing the second resonance frequency, the antenna gain is increased. This is effective for the frequency of 1.5 GHz to 2.5 Ghz. The bandwidth is enough for IMT2000 and the input impedance of 50 ohms. The advantages of the antenna are the design is simple, better gain compared to normal helical antenna and physically strong and flexible. A formula to relate the resonance frequency and the design parameters has been found. by having a reflector, the performance of the antenna is improved by 3 dB. The antenna radiation pattern can be deviated so that the beam is radiating forward and therefore less energy is heating the user`s head.

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School of Electrical and Electronic Engineering, Campus Sri Ampangan, Universiti Sains Malaysia
14300 Nibong Tebal
Pulau Pinang
Malaysia

Full Name [1]
Prof. Syed Idris Syed Hassan
Email [1]
syed@eng.usm.my