Multi-band vehicular blade antenna
First Claim
1. A multi-band vehicular blade antenna adapted to be attached by one end so as to form part of a vehicle, the antenna comprising a generally-planar dielectric member with two opposite faces each having a metallic overlay, each overlay forming a radiator element allowing communication on a respective one of two operative frequency bands, each overlay being adapted to be electrically connected, proximate one end of the member, to a vehicular grounding connection when the antenna is in an operative position on the vehicle, the overlays being configured to extend from the one end of the member toward the other end through respective different characteristic lengths, each characteristic length at least partially defining a respective one of the two operative frequency bands.
3 Assignments
0 Petitions
Accused Products
Abstract
A multi-band blade antenna for use on a vehicle is formed by patterning the metal on both sides of a printed circuit board. One side is patterned into low-frequency patch and ground elements, and the other side is patterned into high-frequency patch and ground elements. The length of the patterned patch element on the low-frequency side of the board approximates the length of the board, while the effective length of the high-frequency patch element is approximately twice as long. Tuning for the frequency bands of mobile telephones in different regions (for instance, the European Union, United States and Japan) is by means of differences in slot length in the patch member on the low-frequency side, and differences in separation between the patch and ground members on the high-frequency side. RLC components are affixed to the low-frequency side after patterning. The printed circuit board has a shape which, in a complementary housing, may add ornamentation to the exterior of a vehicle on which it is mounted.
14 Citations
19 Claims
- 1. A multi-band vehicular blade antenna adapted to be attached by one end so as to form part of a vehicle, the antenna comprising a generally-planar dielectric member with two opposite faces each having a metallic overlay, each overlay forming a radiator element allowing communication on a respective one of two operative frequency bands, each overlay being adapted to be electrically connected, proximate one end of the member, to a vehicular grounding connection when the antenna is in an operative position on the vehicle, the overlays being configured to extend from the one end of the member toward the other end through respective different characteristic lengths, each characteristic length at least partially defining a respective one of the two operative frequency bands.
Specification