Radiation Efficiency Improvement of a Balanced Miniature IFA-Inspired Circular Antenna

被引：26

作者：

Sarrazin, F. ^{[1
]}

Pflaum, S. ^{[1
]}

Delaveaud, C. ^{[1
]}

机构：

[1] CEA LETI DSYS STSF, Lab Antenna & Propagat, F-38054 Grenoble, France

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷

关键词：

Balanced antenna measurement; electrically small antenna (ESA); inverted-F antenna (IFA); radiation efficiency; ultranarrowband (UNB) antenna; IMPEDANCE; BANDWIDTH;

D O I：

10.1109/LAWP.2016.2633308

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The radiation efficiency improvement of an electrically small antenna is presented. We consider a balanced miniature inverted-F-antenna-inspired circular antenna whose radius is lambda/28 at 433 MHz and radiation efficiency is 30%. By modifying the antenna strip width, we identify, by electromagnetic simulations, an antenna radiation efficiency improvement up to 53% while keeping its overall dimension and general structure identical. Then, we confirm the antenna performances improvement by radiation efficiency measurements performed inside a large anechoic chamber and using the gain pattern integration technique. An optical fiber link is used to avoid possible perturbation due to the feeding coaxial cable. The radiation efficiency improvement, confirmed by experimentation, is of major interest for ultranarrowband antennas for which the radiation efficiency is the most critical parameter. This efficiency improvement is discussed in light of the fundamental limits of miniature antennas.

引用

页码：1309 / 1312

页数：4

共 14 条

[1]

[Anonymous], 2016, Antenna Theory and Design

[2] Bandwidth enhancement and further size reduction of a class of miniaturized slot antennas [J].

Behdad, N ;

Sarabandi, K .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2004, 52 (08) :1928-1935

[3] A discussion on the quality factor of impedance matched electrically small wire antennas [J].

Best, SR .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2005, 53 (01) :502-508

[4]

Bourtoutian R., 2007, 2 EUR C ANT PROP EUC, P1

[5] PHYSICAL LIMITATIONS OF OMNI-DIRECTIONAL ANTENNAS [J].

CHU, LJ .

JOURNAL OF APPLIED PHYSICS, 1948, 19 (12) :1163-1175

[6]

Ferrero F, 2015, IEEE ANTENNAS PROP, P776, DOI 10.1109/APS.2015.7304775

[7] Impedance and Radiation Measurement Methodology for Ultra Miniature Antennas [J].

Huitema, Laure ;

Delaveaud, Christophe ;

D'Errico, Raffaele .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2014, 62 (07) :3463-3473

[8] A re-examination of the fundamental limits on the radiation Q of electrically small antennas [J].

McLean, JS .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1996, 44 (05) :672-676

[9] Measuring the impedance of balanced antennas by an S-parameter method [J].

Meys, R ;

Janssens, F .

IEEE ANTENNAS AND PROPAGATION MAGAZINE, 1998, 40 (06) :62-69

[10] An Overview of Tuning Techniques for Frequency-Agile Antennas [J].

Petosa, Aldo .

IEEE ANTENNAS AND PROPAGATION MAGAZINE, 2012, 54 (05) :271-296

← 1 2 →