Radiation efficiency enhancement using lumped inductors for dual-mode mobile phone

Seung Jun Lee; Sung Won Park; Chul Woo Park; Young Sik Kim

doi:10.1002/mop.26735

Radiation efficiency enhancement using lumped inductors for dual-mode mobile phone

Seung Jun Lee, Sung Won Park, Chul Woo Park, Young Sik Kim

* Honorary professors

Research output: Contribution to journal › Article › peer-review

Abstract

This letter proposes a radiation efficiency enhancement technique using a lumped inductor for a dual-mode mobile phone.Two planar inverted-F antennas (PIFAs) with a collinear arrangement are used for dual-mode operation at the CDMA band of 824-894 MHz and GSM band of 880-960 MHz. Each antenna is separately connected to a lumped inductor of 4.7 nH. The electric field is more confined on each inverted-F section at its operating band in this configuration and the coupling between PIFAs is less than -10 dB. The simulated and measured results show that radiation efficiency of the proposed antenna is improved by up to 33%. The radiation patterns are similar to those of a dipole antenna with slightly tilted main beam directions due to the PIFA placement.

Original language	English
Pages (from-to)	1011-1013
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	54
Issue number	4
DOIs	https://doi.org/10.1002/mop.26735
Publication status	Published - 2012 Apr

Keywords

PIFA
coupling
dual-mode
mobile phone
radiation efficiency

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1002/mop.26735

Cite this

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abstract = "This letter proposes a radiation efficiency enhancement technique using a lumped inductor for a dual-mode mobile phone.Two planar inverted-F antennas (PIFAs) with a collinear arrangement are used for dual-mode operation at the CDMA band of 824-894 MHz and GSM band of 880-960 MHz. Each antenna is separately connected to a lumped inductor of 4.7 nH. The electric field is more confined on each inverted-F section at its operating band in this configuration and the coupling between PIFAs is less than -10 dB. The simulated and measured results show that radiation efficiency of the proposed antenna is improved by up to 33%. The radiation patterns are similar to those of a dipole antenna with slightly tilted main beam directions due to the PIFA placement.",

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AB - This letter proposes a radiation efficiency enhancement technique using a lumped inductor for a dual-mode mobile phone.Two planar inverted-F antennas (PIFAs) with a collinear arrangement are used for dual-mode operation at the CDMA band of 824-894 MHz and GSM band of 880-960 MHz. Each antenna is separately connected to a lumped inductor of 4.7 nH. The electric field is more confined on each inverted-F section at its operating band in this configuration and the coupling between PIFAs is less than -10 dB. The simulated and measured results show that radiation efficiency of the proposed antenna is improved by up to 33%. The radiation patterns are similar to those of a dipole antenna with slightly tilted main beam directions due to the PIFA placement.

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Radiation efficiency enhancement using lumped inductors for dual-mode mobile phone

Abstract

Keywords

ASJC Scopus subject areas

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