In a mobile wireless system, fading effects can be classified into large-scale (long-term) effects and small-scale (shortterm) effects. We use transmission power control to compensate for large-scale fading and exploit receiver antenna (space) diversity to combat small-scale fading. We show that the interferences across the antennas are jointly Gaussian in a large system, and then characterize ...

This paper presents Loran signal processing results for a series of successively smaller H‐ field square‐loop antennas input to a preliminary design of low‐noise‐optimized, low‐ frequency ASIC. Antennas as small as 5cm (2‐inches) on a side are able to detect Loran signals both outdoors and indoors, although in some cases significantly attenuated compared to signals from a larger 50cm (20‐inch)...

GOSALIA, KEYOOR. Novel Compact Antennas for Biomedical Implants and Wireless Applications. (Under the direction of Dr. Gianluca Lazzi.) Novel design methodologies and implementation techniques for antennas with an extremely small form factor (kr ¿ 1; k is the wavenumber and r is the radius of enclosing spherical volume) are presented. These size reduction techniques are applied to design antenn...

The paper presents the method for measuring parameters (gain, antenna factor, impedance and radiation pattern) of small antennas in GTEM cell, which is a novel method and environment for antenna measurements. In order to investigate the suitability of GTEM cell for this kind of measurement, the measurement results for a biconical dipole, microstrip patch antennas and small loop antenna were com...

1. Introduction Recently, very small antennas are requested in RFID tags and tire attached sensors of the tire pressure monitoring system (TPMS). In these applications, normal-mode helical antennas (NMHA) are interested that can achieve high antenna efficiencies at very small size such as 1/100 wavelengths. Moreover, NMHA can increase antenna gains in the metal plate proximity use. However, NMH...

With the advance of wireless communication systems and increasing importance of other wireless applications, wideband and low profile antennas are in great demand for both commercial and military applications. Multi-band and wideband antennas are desirable in personal communication systems, small satellite communication terminals, and other wireless applications. Wideband antennas also find app...

In In this paper, two low profile, single fed cavity backed slot antennas providing a circularly polarized (CP) wave are introduced. One of the antennas presents a right-handed CP (RHCP) wave, while the other one offers a left handed CP (LHCP) wave. The proposed antennas consist of a square shaped Substrtae Integrated Waveguide (SIW) cavity incorporatng two couples of radiating slots to radiate...

The purpose of this paper is three fold. First, the major theoretical pattern relationships of TV and/or FM transmitting antennas are dealt with. Secend, the computer calculation method and designing of such patterns using the given relationships. And third, a method in which a computer graphic system can be used to design such antennas for a specific pattern is introduced and its results are p...

High-gain and large-aperture antennas with fixed beams are required to achieve high S/N ratio for point-to-point high-speed data-communication systems in the millimeter-wave band. Furthermore, beam-scanning antennas are attractive to cover wide angle with high gain for applications of high-speed data-communication systems and high-resolution sensing systems. High-gain pencil-beam antennas are u...