May 25, 2000, now Pat. No. 6,304.215, which is a division Th impedance components. of
application No. 09/210,117, filed on Dec. 11, 1998. now rough proper control of the passive …

The bulk of existing cellular antenna technology belongs to a low-to medium-gain omni-
directional class. An example of a unidirectional antenna is the Yagi antenna shown in FIG …

An array with pattern-reconfigurable elements is used to generate a digital modulation by
switching the elements for every symbol. This technique is known as directional modulation …

In this paper we introduce a new perspective to the implementation of wireless MIMO
transmission systems with increased bandwidth efficiency. Unlike traditional spatial …

Millimeter wave antennas have applications in several sensing and communication systems.
Such antennas, designed for modern miniaturized devices and systems, must be low profile …

The potential for an epileptic seizure to end life has been known throughout history,
although the cause of many such deaths is still not understood. Over the last 25 years there …

A reconfigurable microstrip antenna is proposed for low-cost adaptive beam-switching
applications. A small patch-slot ring structure is used as the radiating element where an …

This letter describes a simple beam-tilting technique for an endfire antenna using only a
single-layer frequency selective surface (FSS). The proposed approach is based on placing …

Base-station tracking in mobile communications benefits from a directional antenna and so
requires direction finding technology. A novel technique for electronically directing the …

A new approach to parasitic phased-array antennas is presented. A symmetric two-layer,
single-input inexpensive three-element array at 1-GHz employing varactors as tuning …