Advanced multilevel antenna for motor vehicles
First Claim
1. An antenna for a motor vehicle comprising:
- a) a transparent window coated with an optically transparent conducting layer on at least one side of the transparent window, b) at least one multilevel structure supported by said transparent conducting layer, said at least one multilevel structure composed of a set of polygonal elements having the same number of sides and being electromagnetically coupled either by ohmic contact or a capacitive or inductive coupling mechanism, wherein the contact region between at least 75% of said polygonal elements is between 5% and 50% of the perimeters of said polygonal elements, c) a two-conductor feeding transmission line, connected to said antenna at a feeding point, wherein the antenna features a similar impedance at the feeding point and a similar horizontal radiation pattern in at least three bands, and wherein at least two of said three bands are selected from the group consisting of;
FM (80 MHz-110 MHz), DAB (205 MHz-230 MHz), Tetra (350 MHz-450 MHz), DVB (470 MHz-862 MHz), GSM900/AMPS (820 MHz-970 MHz), GSM1800/DCS/PCS/DECT (1700 MHz-1950 MHz), UMTS (1920 MHz-2200 MHz), Bluetooth (2500 MHz) and WLAN (4.5 GHz-6 GHz) such that said antenna can be operated simultaneously at any of the telecommunication services with said bands.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an antenna for a motor vehicle, having the following parts and characteristics: a) a transparent window covered with a transparent, optically conductive plate on at least one side of any of the window material plates; b) a multilevel structure printed on the conductive plate. The multilevel structure consists of a set of polygonal elements pertaining to one same class, preferably triangles or squares; c) a transmission line powering two conductors; d) a similar impedance in the power supply point and a horizontal radiation diagram in at least three frequencies within three bands. The main advantage of the invention lies in the multiband and multiservice performance of the antenna. This enables convenient and easy connection of a simple antenna for most communication systems of the vehicle.
172 Citations
36 Claims
-
1. An antenna for a motor vehicle comprising:
-
a) a transparent window coated with an optically transparent conducting layer on at least one side of the transparent window, b) at least one multilevel structure supported by said transparent conducting layer, said at least one multilevel structure composed of a set of polygonal elements having the same number of sides and being electromagnetically coupled either by ohmic contact or a capacitive or inductive coupling mechanism, wherein the contact region between at least 75% of said polygonal elements is between 5% and 50% of the perimeters of said polygonal elements, c) a two-conductor feeding transmission line, connected to said antenna at a feeding point, wherein the antenna features a similar impedance at the feeding point and a similar horizontal radiation pattern in at least three bands, and wherein at least two of said three bands are selected from the group consisting of;
FM (80 MHz-110 MHz), DAB (205 MHz-230 MHz), Tetra (350 MHz-450 MHz), DVB (470 MHz-862 MHz), GSM900/AMPS (820 MHz-970 MHz), GSM1800/DCS/PCS/DECT (1700 MHz-1950 MHz), UMTS (1920 MHz-2200 MHz), Bluetooth (2500 MHz) and WLAN (4.5 GHz-6 GHz) such that said antenna can be operated simultaneously at any of the telecommunication services with said bands.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. An antenna for a motor vehicle comprising:
-
a) a transparent window coated with an optically transparent conducting layer on at least one side of the transparent window, b) at least one multilevel structure supported by said transparent conducting layer, said at least one multilevel structure composed of a set of polygonal elements having the same number of sides and being electromagnetically coupled either by ohmic contact or a capacitive or inductive coupling mechanism, wherein the contact region between at least 75% of said polygonal elements is less than 50% of the perimeters of said polygonal elements, c) a two-conductor feeding transmission line connected to said antenna at a feeding point, wherein the antenna features a similar impedance at the feeding point and a similar horizontal radiation pattern in at least three bands, and wherein at least two of said three bands are selected from the group consisting of;
FM (80 MHz-110 MHz), DAB (205 MHz-230 MHz), Tetra (350 MHz-450 MHz) GSM900/AMPS (820 MHz-970 MHz), GSM1800/DCS/PCS/DECT (1700 MHz-1950 MHz), UMTS (1950 MHz-2200 MHz), Bluetooth (2500 MHz) and WLAN (4.5 GHz-6 GHz) such that said antenna can be operated simultaneously at any of the telecommunication services with said bands.- View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
Specification