Motorola Corporation

Mototola, Inc.

Dwight D Walthers

Christopher N Kurby

Kevin M Thill

Michael W Frenzer

Robert J Locascio

Joan E Zocher

Martin V Seitz

A compact patch antenna having a housing (110) for holding a patch antenna hinged by hinge (130) to a planar member (120) by a clip (140). The planar member (120) is capable of hinging to an open position for use and to a closed position for storage. The clip (140) is adaptable for connection to the edge of the glass of a window of an automobile or the like.

Compact patch antenna

A self phased antenna element with two pairs of arms (110, 120, 130, 140) in a crossed relationship transceives a signal at a resonant frequency. A dielectric (150, 160) is disposed adjacent an arm (130, 140) to obtain a self phased relationship in the arms (110, 120, 130, 140) at the resonant frequency. The arms can form crossed loops or twisted crossed loops such as a quadrifilar helix antenna element. A dielectric collar on arms of the same loop causes arm currents to be equally spaced from one another. The antenna size is reduced and a cross section of the antenna element appears circular without degradation of a gain pattern when the dielectric is used on the certain arm.

Self phased antenna element with dielectric and associated method

The present invention includes a low-earth satellite-based paging broadcast system (100) and method (200, 300) that maximizes spectral efficiency and minimizes power expenditure for the broadcast of paging messages by broadcasting the messages to terminator- or originator-selectable portions of the total system coverage area. The terminator selects a long-term preferred geographic area (LTPGA), and optionally, a short-term preferred geographic area (STPGA). The originator provides the terminator ID, the message, and optionally provides a customized preferred geographic area (CPGA). Terminators and originators can easily modify the selectable geographic areas (SGA(s)): LTPGA(s), STPGA(s), and CPGA(s). The gateway converts the SGA(s) to addressable coverage areas (ACA(s)), and transmits a signal including the paging information, and ACA(s) to at least a first communication satellite (COM SAT). The COM SAT(s) provide for crosslinking the signal to other COM SAT(s) and for broadcasting the paging information to the ACA(s).

Geographic-area selective low-earth satellite-based paging broadcast

Communication system display module

Growing community of inventors

McHenry, IL, United States of America

Dwight D Walthers