Study of a T-Shaped Slot With a Capacitor for High Isolation Between MIMO Antennas

Author

Jungsik Park ; Junho Choi ; Ji-Yong Park ; Young-Sik Kim

Author_Institution

Mobile Commun. Div., Samsung Electron. Co., Ltd., Suwon, South Korea

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1541

Lastpage

1544

Abstract

In this letter, an isolation improvement method between two closely packed planar inverted-F antennas (PIFAs) is proposed via a miniaturized ground slot with a chip capacitor. The proposed T-shaped ground slot acts as a notch filter, and the capacitor is utilized to reduce the slot length. The equivalent circuit model of the proposed slot with the capacitor is derived. The measured isolation between two PIFAs is down to below -20 dB at the whole WLAN band of 2.4 GHz.

Keywords

MIMO communication; equivalent circuits; integrated circuit modelling; notch filters; planar antennas; slot antennas; wireless LAN; MIMO antenna; PIFA; T-shaped ground slot; WLAN band; chip capacitor; equivalent circuit model; frequency 2.4 GHz; high isolation; isolation improvement method; measured isolation; miniaturized ground slot; notch filter; packed planar inverted-F antenna; slot length; Antenna radiation patterns; Capacitance; Capacitors; Integrated circuit modeling; MIMO; Resonant frequency; Antenna; capacitor; isolation; mutual coupling; slot;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2226695

Filename

6341037