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1. (WO1998049742) AN ANTENNA FOR A RADIO COMMUNICATIONS APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049742 International Application No.: PCT/SE1998/000764
Publication Date: 05.11.1998 International Filing Date: 27.04.1998
Chapter 2 Demand Filed: 12.11.1998
IPC:
H01Q 1/24 (2006.01) ,H01Q 1/36 (2006.01) ,H01Q 1/38 (2006.01) ,H01Q 3/24 (2006.01) ,H01Q 5/00 (2006.01) ,H01Q 9/04 (2006.01) ,H01Q 13/10 (2006.01) ,H01Q 13/16 (2006.01)
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
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
Applicants:
MOTECO AB [SE/SE]; P.O. Box 51 S-570 76 Ruda, SE (AT, BE, BR, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, JP, LU, MC, NL, PT, SE)
CASSEL, Erland [SE/SE]; SE (UsOnly)
Inventors:
CASSEL, Erland; SE
Agent:
WALLENGREN, Yngvar; Patentbyrån Y Wallengren AB P.O. Box 116 S-331 21 Värnamo, SE
Priority Data:
9701646-330.04.1997SE
Title (EN) AN ANTENNA FOR A RADIO COMMUNICATIONS APPARATUS
(FR) ANTENNE DESTINEE A UN APPAREIL DE RADIOCOMMUNICATION
Abstract:
(EN) The disclosure relates to an antenna. To improve transmission and reception in a mobile telephone, it has a so-called diversity antenna. The invention relates to an antenna (4) suitable as a diversity antenna. The antenna (4) has a plate (20) of insulating material with a foil coating (10, 22) on both sides. In the foil (10, 22) there are provided two slots (7, 23) one on each side. The slots (7, 23) have meander formations or windings in order that their electric length exceed their physical length. The one slot (23) is 1-3 % longer than the other. At one closed end (12) of the one slot (7), there are connections (13, 14) for a supply line. The foil coatings (10, 22) are in contact with one another through a plate (18) which is soldered fast on the side of the carrier (20) at right angles thereto. Laterally in relation to the longitudinal direction of the slots (7, 23) there is an earth plane (6). The foil coatings (10, 22) extend out on this and both sides are in galvanic communication (27) with one another. In order to increase the electric length of the earth plane (6), slots (15) are provided in the foil coatings (10, 22).
(FR) L'invention concerne une antenne. Pour améliorer l'émission et la réception dans un téléphone mobile, ce dernier est doté d'une antenne à réception simultanée. L'invention concerne donc une antenne (4) convenant comme antenne à réception simultanée. L'antenne (4) a une plaque (20) réalisée dans un matériau isolant et dotée de chaque côté d'une feuille de revêtement (10, 22). Chaque feuille (10, 22) est pourvue d'une fente (7, 23). Les fentes (7, 23) ont des formations en grecque de telle façon que leur longueur électrique dépasse leur longueur physique. L'une des fentes (23) est plus longue que l'autre fente d'environ 1 à 3 %. A une extrémité fermée (12) d'une fente (7), des connexions (13, 14) sont destinées à une ligne d'alimentation. Les feuilles de revêtement (10, 22) sont en contact l'une avec l'autre par une tôle (18) fixée par soudage perpendiculairement sur le côté de la plaque (20). Un plan de terre (6) est situé sur le côté par rapport à la direction longitudinale des fentes (7, 23). Les feuilles de revêtement (10, 22) s'étendent sur ce plan de terre et les deux côtés sont en communication galvanique (27). Afin d'augmenter la longueur électrique du plan de terre (6), des fentes (15) sont pratiquées dans les feuilles de revêtement (10, 22).
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Designated States: BR, DE, JP, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: Swedish (SV)
Also published as:
EP1016159US20020030627JP2001523414