𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effects of the feed network on the axial ratio of a patch antenna

✍ Scribed by Quiterio García-García

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
200 KB
Volume
19
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

obtained and solved for the eigenvalues ␥ s ␣ q j ␤ and

for the transverse components of the magnetic field H and x Ž . H eigenvectors . The obtained characteristic matrix is y sparse, allowing a considerable reduction of memory space and processing time. The spurious modes are eliminated by the implicit inclusion of the divergence of the magnetic induction vector equal to zero.

The obtained results are shown to be consistent with the related theory, and the method used corresponds to a good alternative for the characterization of this type of structure, Ž . where the transition regions resonance are well defined.

📜 SIMILAR VOLUMES

Extension of cavity method to analyze th
Extension of cavity method to analyze the aperture-coupled microstrip patch antenna with a tilted feeding line
✍ O. Lafond; M. Himdi; J. P. Daniel 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 117 KB

In this paper, the tilt of a feedline with regard to a slot is taken into account to impro¨e the ca¨ity model, and also to see the effect of this angle on the input impedance. In fact, the angle is introduced in the ¨oltage discontinuity of the slot on the feeding line. The computed results are comp

A preliminary study of the behavioral ef
A preliminary study of the behavioral effects of feeding enrichment on African elephants
✍ T.S. Stoinski; E. Daniel; T.L. Maple 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 34 KB 👁 2 views

Although commonly practiced with many species, feeding enrichment in elephants is understudied. The behavioral effects of feeding enrichment were tested in three African elephants by substituting an equal dry weight of browse for hay in an ABA design. The results showed a significant increase in fee

Full-wave analysis of the broadband circ
Full-wave analysis of the broadband circular polarization microstrip patch antenna
✍ A. Azrar; R. Aksas; A. Vander Vorst 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 125 KB 👁 1 views

of 3 = 3 elements was fabricated and tested. The stability of the quasi-optical amplifier array was demonstrated. The gain of the active array is higher than the gain of passive array by approximately the gain of a simple amplifier. Using the measurement data, the EIRP and effective power were deter

The effect of topological constraints on
The effect of topological constraints on polymer network pressure
✍ Ilya Ladyzhinski; Ory Ramon; Shimon Mizrahi; I. J. Kopelman; Yachin Cohen 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB 👁 1 views

Recent data on comparative osmotic deswelling of poly(acrylic acid) gels and solutions shows that the difference between osmotic pressure of the gel and of the solution, P gel (c, f ) 0 P solution (c, f ), taken at equal polymer concentration ( c) and fraction of the ionized acrylic acid monomers (

FDTD simulation of antenna coating effec
FDTD simulation of antenna coating effects on the radiation properties of cellular phones
✍ M. AlSunaidi; A.-K. Hamid 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 126 KB 👁 1 views

A detailed characterization of the effects of antenna coating on the performance of cellular phones is presented. The FDTDbased simulations show that antenna coating facilitates the reduction of the antenna length without jeopardizing the radiation properties of the antenna. Howe¨er, the radiation e