By Shiv Narayan, B. Sangeetha, Rakesh Mohan Jha
This booklet makes a speciality of functionality enhancement of revealed antennas utilizing frequency selective surfaces (FSS) know-how. The growing to be call for of stealth know-how in strategic parts calls for high-performance low-RCS (radar pass part) antennas. Such necessities can be comprehensive by means of incorporating FSS into the antenna constitution both in its flooring aircraft or because the superstrate, as a result of the filter out features of FSS constitution. In view of this, a unique technique according to FSS know-how is gifted during this publication to augment the functionality of published antennas together with out-of-band structural RCS aid. during this exercise, the EM layout of microstrip patch antennas (MPA) loaded with FSS-based (i) excessive impedance floor (HIS) floor aircraft, and (ii) the superstrates are mentioned intimately. The EM research of proposed FSS-based antenna buildings were performed utilizing transmission line analogy, together with the reciprocity theorem. additional, numerous sorts of novel FSS constructions are thought of in designing the HIS floor aircraft and superstrate for boosting the MPA bandwidth and directivity. The EM layout and function analyses of FSS-based antennas are defined the following with the suitable expressions and illustrations.
Read Online or Download Frequency Selective Surfaces based High Performance Microstrip Antenna PDF
Similar microwaves books
Quadrature hybrids are passive circuit parts which are utilized in a variety of RF and microwave purposes, and this state-of-the-art ebook is the 1st source to supply engineers with a great realizing in their features and layout. The e-book is helping execs use lumped point quadrature hybrids to accomplish super huge bandwidth operation.
Within the fast paced, "I-need-it-done-by-yesterday" global of microwave engineering, it truly is extra very important than ever to get your circuit designs up-and-running on time and to necessities. Authored via a well known professional within the undefined, this specific new publication is helping you do exactly that by way of featuring no-nonsense, proven-under-fire microwave circuit layout "recipes" so that you can stick with for speedy layout effects -- with no need to struggle through pages of theoretical or educational rhetoric.
This booklet provides rules and purposes to extend the space for storing from 2-D to three-D or even multi-D, together with grey scale, colour (light with diverse wavelength), polarization and coherence of sunshine. those actualize the advancements of density, potential and knowledge move fee for optical information garage.
- An Introduction to Microwave Measurements
- Geometric Optics: Theory and Design of Astronomical Optical Systems Using Mathematica®
- Trends in optics
Additional info for Frequency Selective Surfaces based High Performance Microstrip Antenna
M. Hakkak, and F. Keshmiri. 2006. Bandwidth enhancement of the probe fed microstrip antenna using frequency selective surface as electromagnetic bandgap superstrate. Progress in Electromagnetics Research 61: 215–230. , F. Keshmiri, M. Hakkak, and M. Tayarani. 2007. Analysis and design of dual band high directivity EBG resonator antenna using square loop FSS as superstrate layer. Progress in Electromagnetic Research PIER 70: 1–20. , H. Bahrami, and J. Nasri. 2012. Wideband high directivity aperture coupled microstrip antenna design by using a FSS superstrate layer.
Diblanc, E. Arnaud, T. Monédière, and B. Jecko. 2007. Dualband EBG resonator antenna using a single-layer FSS. IEEE Antennas Wireless Propagation Letter 6: 368–371. L. 2007. Antenna engineering handbook, 4th ed. New York: McGraw-Hill. -Y. -R. -J. -Q. Li. 2013. Broadband RCS reduction of microstrip patch antenna using bandstop frequency selective surface. Radio Engineering 22(4): 1275–1280. , R. Mittra, and S. Chahavany. 2002. A GA-based design of electromagnetic bandgap structures utilizing frequency selective surfaces for bandwidth enhancement of microstrip antennas.
The superstrate loaded antenna is fed through a 50 Ω coaxial cable to excite the ﬁeld within the antenna. According to cavity model theory, a rectangular MPA structure can be analyzed by solving a parallel RLC resonant circuit as shown in Fig. 22a, where Ra represents the resistance due to the ohmic losses in the metallic parts of the patch. La and Ca represent the inductance and capacitance due to the magnetic and electric energy stored in the antenna, respectively. The input impedance of antenna is determined using Eq.