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1. (US6337662) Antenna for radio communications apparatus

Office : United States of America
Application Number: 09403865 Application Date: 28.10.1999
Publication Number: 6337662 Publication Date: 08.01.2002
Grant Number: 6337662 Grant Date: 08.01.2002
Publication Kind : B1
Prior PCT appl.: Application Number:SE98000774 ; Publication Number: Click to see the data
IPC:
H01Q 1/24
H01Q 13/08
H01Q 1/36
H01Q 1/38
H01Q 3/24
H01Q 5/00
H01Q 9/04
H01Q 13/10
H01Q 13/16
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
12
Supports; Mounting means
22
by structural association with other equipment or articles
24
with receiving set
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
13
Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
08
Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
36
Structural form of radiating elements, e.g. cone, spiral, umbrella
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
36
Structural form of radiating elements, e.g. cone, spiral, umbrella
38
formed by a conductive layer on an insulating support
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
3
Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system
24
varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
5
Arrangements for simultaneous operation of aerials on two or more different wavebands
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
9
Electrically-short aerials having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04
Resonant aerials
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
13
Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
10
Resonant slot aerials
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
13
Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave
10
Resonant slot aerials
16
Folded slot aerials
CPC:
H01Q 13/16
H01Q 1/243
H01Q 1/36
H01Q 1/38
H01Q 3/24
H01Q 5/40
H01Q 9/0421
H01Q 13/10
H01Q 13/106
Applicants: Moteco AB
Inventors: Cassel, Erland
Agents: Smith, Gambrell & Russell, LLP
Priority Data: 9701646 30.04.1997 SE
Title: (EN) Antenna for radio communications apparatus
Abstract: front page image
(EN)

An antenna for a radio communications apparatus operates in the frequency range of 800 MHz-3 GHz. The antenna has two radiating elements. The first radiating element is a slot in a substantially planar foil or disc-shaped metallic conductor. The second radiating element has a resonance frequency which is different from that of the first radiating element. The metallic conductor is placed close to a second conductor in the form of a metallic surface. The second radiating element is formed from an edge portion of the first conductor or a gap between the first and the second conductors. Capacitance devices may be disposed between the edge portion and the second conductor.


Also published as:
EP0979536JP2001522558 WO/1998/049743