Fundamentals of Antennas

An antenna is a device that is used to transfer guided electromagnetic waves (signals) to radiating waves in an unbounded medium, usually free space, and vice versa (i.e., in either the transmitting or receiving mode of operation). Antennas are frequency-dependent devices. Each antenna is designed for a certain frequency band. Beyond the operating band, the antenna rejects the signal. Therefore, we might look at the antenna as a bandpass filter and a transducer. Antennas are essential parts in communication systems. Therefore, understanding their principles is important. In this chapter, we introduce the reader to antenna fundamentals. There are many different antenna types. The isotropic point source radiator, one of the basic theoretical radiators, is useful because it can be considered a reference to other antennas. The isotropic point source radiator radiates equally in all directions in free space. Physically, such an isotropic point source cannot exist. Most antennas’ gains are measured with reference to an isotropic radiator and are rated in decibels with respect to an isotropic radiator (dBi).

[1]  R. Garg,et al.  Microstrip Antenna Design Handbook , 2000 .

[2]  Johann W. Odendaal,et al.  Single-layer capacitive feed for wideband probe-fed microstrip antenna elements , 2003 .

[3]  Kin-Lu Wong,et al.  A Compact Wideband Omnidirectional Cross-Plate Monopole Antenna , 2005 .

[4]  R. Murch,et al.  A capacitively loaded PIFA for compact mobile telephone handsets , 1997 .

[5]  Lee Kai Fong,et al.  On the Use of Shorting Pins in the Design of Microstrip Patch Antennas , 2004 .

[6]  D. Forigo,et al.  Analysis of aperture-coupled multi-layer microstrip antennas , 1993, Proceedings of IEEE Antennas and Propagation Society International Symposium.

[7]  J. D. Krauss.  Antennas For All Applications , 1950 .

[8]  T.K.-C. Lo,et al.  Bandwidth enhancement of PIFA loaded with very high permittivity material using FDTD , 1998, IEEE Antennas and Propagation Society International Symposium. 1998 Digest. Antennas: Gateways to the Global Network. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.98CH36.

[9]  R. Mittra,et al.  Design and analysis of a stacked dual-frequency microstrip planar inverted-F antenna for mobile telephone handsets using the FDTD , 2000, IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (C.

[10]  D. Pozar.  A reciprocity method of analysis for printed slot and slot-coupled microstrip antennas , 1986 .

[11]  R. A. Johnson,et al.  Antenna engineering handbook /2nd edition/ , 1984 .

[12]  Kai Fong Lee,et al.  Design of small-size wide-bandwidth microstrip-patch antennas , 2003 .

[13]  D. Schaubert,et al.  Analysis of an aperture coupled microstrip antenna , 1986 .

[14]  S. Hienonen,et al.  STUDIES ON MICROWAVE ANTENNAS: PASSIVE INTERMODULATION DISTORTION IN ANTENNA STRUCTURES AND DESIGN OF MICROSTRIP ANTENNA ELEMENTS , 2005 .

[15]  Zhi Ning Chen,et al.  A stacked suspended plate antenna , 2003 .

[16]  M. O. Al-Nuaimi,et al.  Tuning techniques for planar inverted-F antenna , 2001 .

[17]  Kin-Lu Wong,et al.  Ultrawide-band square planar metal-plate monopole antenna with a trident-shaped feeding strip , 2005 .

[18]  R. Bansal,et al.  Antenna theory; analysis and design , 1984, Proceedings of the IEEE.

[19]  Y. Chow,et al.  Broadband microstrip patch antenna , 1998 .

[20]  Zhi Ning Chen.  Impedance characteristics of probe‐fed L‐shaped plate antenna , 2001 .

[21]  Hyung Do Choi,et al.  Small wideband PIFA for mobile phones at 1800 MHz , 2004, 2004 IEEE 59th Vehicular Technology Conference. VTC 2004-Spring (IEEE Cat. No.04CH37514).

[22]  Warren L. Stutzman,et al.  Ground plane effects on planar inverted-F antenna (PIFA) performance , 2003 .