FM Radio Chip Antenna using Magneto-Dielectric

Author

Jae-Kwon Park ; Young-Hee Cho ; Jung-Min Kim ; Sung-Hyun Kim ; Jin-Sam Yoo

Author_Institution

Dept. of R&D, Amotech, Seoul

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

3

Abstract

This paper proposes the internal FM radio chip antenna miniaturization using magneto-dielectric. New digital multimedia broadcasting service including FM is now available with the development of VHF band and is expected to offer diverse opportunities to mobile businesses. FM radio frequency band ranges between 87.5 MHz and 108 MHz. However FM antenna is too big to fit inside mobile devices since a quarter wave length of VHF band in vacuum mu_tau =1, epsiv_tau =1 measures about 75 cm. In order to address this problem, we used magneto-dielectric material. The bandwidth, resonance frequency and size of the antenna are respectively 20 MHz at VSWR 6:1, 98 MHz and 25times5times2 mm.

Keywords

VHF antennas; broadcast antennas; dielectric bodies; frequency modulation; mobile antennas; mobile handsets; multimedia communication; radio broadcasting; FM radio chip antenna; VHF band; digital multimedia broadcasting service; frequency 87.5 MHz to 108 MHz; magneto-dielectric material; mobile devices; size 2 mm; size 25 mm; size 5 mm; Antennas and propagation; Bandwidth; Coupling circuits; Dielectric materials; Magnetic materials; Magnetic resonance; Manufacturing; Permeability; Permittivity; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554926

Filename

4554926