Analysis of Inverted-F and Loaded Inverted-F Antennas for 2.4 GHz ISM Band Applications

This paper addresses the numerical simulations of Inverted-F and loaded inverted-F antennas for improving the performance of 2.4 GHz industrial, scientific and medical (ISM) band applications. The proposed antennas are directly feed by coaxial connector and the antenna arms effectively control the excited resonant modes for the required operation. Total area occupies by the antennas are 15×34 and 17×34 mm² respectively. The antennas contain an incredibly high peak gain of 8.50 and 8.89 dBi with less than 1.13 and 1.29 dBi gain variation within the 10 dB return loss bandwidth. Also, the antennas have return loss bandwidth of 150 (2355 – 2505 MHz) and 155 MHz (2370 – 2525 MHz) with peak return loss of -25.72 and -30.96 dB respectively. Index Terms : Inverted-F antenna (IFA); Loaded inverted-F antenna (LIFA); return loss; ISM band. J. Elec. Engg., Instn. Engrs., Bangladesh, 36(II), December 2009: 4-9

[1]  Chien-Jen Wang,et al.  STUDIES ON DUAL-BAND MULTI-SLOT ANTENNAS , 2008 .

[2]  Jinwoo Jung,et al.  Compact monopole antenna for dual ISM-bands (2.4 and 5.8 GHz) operation , 2009 .

[3]  Jeun-Wen Wu.  2.4/5-GHz dual-band triangular slot antenna with compact operation , 2005 .

[4]  羽石 操,et al.  Analysis, design, and measurement of small and low-profile antennas , 1992 .

[5]  Xueyi Yu,et al.  Design of compact 2.45 GHz microstrip antenna , 2005, 2005 IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications.

[6]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[7]  K. T. Mathew,et al.  Microstripline‐fed half‐cylindrical dielectric resonator antenna for 2.4‐GHz WLAN application , 2006 .

[8]  Kin-Lu Wong,et al.  A microstrip‐coupled printed inverted‐F monopole antenna , 2004 .

[9]  G. Whyte,et al.  An Omnidirectional, Low Cost, Low Profile, 2.45 GHz Microstrip Fed Rectaxial Antenna For Wireless Sensor Network Applications , 2006 .

[10]  Mohammod Ali,et al.  Small printed integrated inverted‐F antenna for Bluetooth application , 2002 .

[11]  Kin-Lu Wong,et al.  WLAN chip antenna mountable above the system ground plane of a mobile device , 2005, IEEE Transactions on Antennas and Propagation.

[12]  Minh-Chau Huynh.  A Numerical and Experimental Investigation of Planar Inverted-F Antennas for Wireless Communication Applications , 2000 .

[13]  C. Soras,et al.  Analysis and design of an inverted-F antenna printed on a PCMCIA card for the 2.4 GHz ISM band , 2002 .

[14]  H.Y.D. Yang.  Miniaturized printed wire antenna for wireless communications , 2005, IEEE Antennas and Wireless Propagation Letters.

[15]  Misao Haneishi,et al.  Analysis, Design, and Measurement of Small and Low-Profile Antennas , 1992 .