US 6,320,549 B1 · Compact dual mode integrated antenna system for terrestrial cellular and satellite telecommunications

Abstract

The present invention represents an integrated antenna assembly comprising a cellular communications antenna and a satellite communications antenna. Such an antenna assembly can, therefore, be used for communications over either frequency range. A wireless telephone using this assembly can, therefore, operate with either a terrestrial cellular communications system or a satellite communications system. In a preferred embodiment of the invention, the satellite communications antenna is a quadrifilar helix antenna and the cellular communications antenna is a sleeve dipole. The whip portion of the sleeve dipole is positioned axially in the center of the quadrifilar helix antenna. This orientation permits operation in both the satellite and cellular frequency ranges without significant electromagnetic coupling.

Claims8

Dependent claims

An integrated antenna assembly comprising:

a satellite communications antenna comprising a quadrifilar helix antenna for reception of radio frequency signals from a satellite;
a cellular communications antenna comprising a monopole antenna positioned along a central longitudinal axis of said quadrifilar helix antenna;
and
a second satellite communications antenna capable of operating in a satellite frequency range different from the frequency range in which the first satellite communications antenna is capable of operating.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

09/401,577Filed 22 Sep 1999 · us provisional application

Priority

31 Mar 1999

Granted

20 Nov 2001

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H01Q 21/28
Antenna arrays or systems: combinations of substantially independent non-interacting antenna units or systems
H01Q 1/241
With receiving set: used in mobile communications, e.g. GSM
H01Q 5/40
Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements: imbricated or…
H01Q 9/18
With feed intermediate between the extremities of the antenna, e.g. centre-fed dipole: vertical disposition of the antenna

Compact dual mode integrated antenna system for terrestrial cellular and satellite telecommunications

Life of this patent

Compact dual mode integrated antenna system for terrestrial cellular and satellite telecommunications

Life of this patent

Abstract

Claims8