Automotive rearview mirror assembly including a helical antenna with a non-circular cross-section
First Claim
Patent Images
1. An automotive rearview mirror assembly, comprising:
- a mirror element;
a housing for accepting and retaining the mirror element; and
a receiver circuit mounted on a printed circuit board (PCB) contained within the housing, the receiver circuit including a helical antenna with a substantially non-circular cross-section.
1 Assignment
0 Petitions
Accused Products
Abstract
An automotive mirror includes a mirror element, a housing for accepting and retaining the mirror element and a receiver circuit mounted on a printed circuit board (PCB) contained within the housing. The receiver circuit includes a helical antenna with a substantially noncircular cross-section.
-
Citations
29 Claims
-
1. An automotive rearview mirror assembly, comprising:
-
a mirror element;
a housing for accepting and retaining the mirror element; and
a receiver circuit mounted on a printed circuit board (PCB) contained within the housing, the receiver circuit including a helical antenna with a substantially non-circular cross-section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
a control circuit contained within the housing, the control circuit controlling the attenuation of light passing into a chamber of the electrochromic mirror element based on surrounding light levels.
-
-
5. The mirror assembly of claim 3, wherein the helical antenna is located between the PCB and a rear element of the electrochromic mirror element.
-
6. The mirror assembly of claim 1, wherein the receiver circuit is configured to receive messages from a plurality of transmitters each located within a tire of a vehicle.
-
7. The mirror assembly of claim 1, wherein an impedance of the helical antenna is matched to an impedance of a front-end of the receiver circuit with a two electrical element network.
-
8. The mirror assembly of claim 3, wherein a gap between a rear conductive layer of the electrochromic mirror element and the helical antenna is in a range of about one-half to three millimeters.
-
9. The mirror assembly of claim 3, wherein a gap between a rear conductive layer of the electrochromic mirror element and the helical antenna is about one-half millimeter.
-
10. The mirror assembly of claim 1, wherein the helical antenna is located between the PCB and a rear surface of the mirror element.
-
11. The mirror assembly of claim 1, wherein a gap between a rear conductive layer of the mirror element and the helical antenna is in a range of about one-half to three millimeters.
-
12. The mirror assembly of claim 1, wherein a gap between a rear conductive layer of the mirror element and the helical antenna is about one-half millimeter.
-
13. An automotive rearview mirror assembly, comprising:
-
an electrochromic mirror element;
a housing for accepting and retaining the electrochromic mirror element;
a receiver circuit mounted on a printed circuit board (PCB) contained within the housing, the receiver circuit including a helical antenna with a substantially non-circular cross-section; and
a control circuit contained within the housing, the control circuit controlling the attenuation of light passing into a chamber of the electrochromic mirror element based on surrounding light levels. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. An automotive rearview mirror assembly, comprising:
-
an electrochromic mirror element;
a housing for accepting and retaining the electrochromic mirror element;
a receiver circuit mounted on a printed circuit board (PCB) contained within the housing, the receiver circuit including a helical antenna with a substantially non-circular cross-section; and
a control circuit contained within the housing, the control circuit controlling the attenuation of light passing into the chamber of the electrochromic mirror element based on surrounding light levels, wherein the helical antenna is located between the PCB and a rear surface of the electrochromic mirror element, and wherein a gap between a rear conductive layer of the electrochromic mirror element and the helical antenna is in a range of about one-half to three millimeters. - View Dependent Claims (21, 22, 23, 24)
-
-
25. A tire monitoring system, comprising:
-
a plurality of sensors each located in a different one of a plurality of vehicle tires;
a plurality of transmitters each associated with a respective one of the sensors, wherein each of the transmitters is configured to transmit a unique transmitter identification code for the vehicle tire in which it is located; and
an automotive rearview mirror assembly, including;
an electrochromic mirror element;
a housing for accepting and retaining the electrochromic mirror element;
a receiver circuit mounted on a printed circuit board (PCB) contained within the housing, the receiver circuit including a helical antenna with a substantially non-circular cross section; and
a control circuit contained within the housing, the control circuit controlling the attenuation of light passing into a chamber of the electrochromic mirror element based on surrounding light levels, wherein the helical antenna is located between the PCB and a rear surface of the electrochromic mirror element, and wherein a gap between a rear conductive layer of the electrochromic mirror element and the helical antenna is in a range of about one-half to three millimeters. - View Dependent Claims (26, 27, 28, 29)
-
Specification