LOW PROFILE FULL WAVELENGTH MEANDERING ANTENNA
3 Assignments
0 Petitions
Accused Products
Abstract
A low profile antenna has a meander length based on the full electrical wavelength of the signal being transmitted or received. The antenna can have either an open-loop structure or a closed-loop structure with a matching network. The low profile enables the antenna to be used in a card for a device such as a personal computer, personal digital assistant, wireless telephone and so on with minimal risk of the antenna breaking off, as compared with a prior art antenna having a higher height and thus more likelihood of being broken from its card.
-
Citations
40 Claims
-
1-23. -23. (canceled)
-
24. A card that interfaces an electronic device wherein the electronic device has a device height comprising:
-
a card body having a width and opposing ends and a device end adapted to be inserted within the electronic device; a loop antenna mounted non-planar to the card body on the end opposite the device end, wherein the width of the loop antenna is about the width of the card body and a height about one-half of its width, wherein the loop antenna further comprises; a first portion having a first straight path segment followed by a meandering path segment followed by a second straight path segment, and two ends, the meandering path segment being about 50% of the length of the first portion, and second and third portions, each having a straight path and connected to respective ends of the first portion, wherein the antenna is non-rotatable relative to the card, and has a plurality of sides, and the first, second and third portions are located along the sides of the antenna, wherein said meandering path segment is split and a portion engages adjacent said card body and has a floating end and other end coupled to a current source or transceiver and operative as electrical delay lines and a full wavelength antenna. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. A card that interfaces an electronic device wherein the electronic device has a device height comprising:
-
a card body having a width and opposing ends and a device end adapted to be inserted within the electronic device; a loop antenna mounted non-planar to the card body on the end opposite the device end, wherein the width of the loop antenna is about the width of the card body and a height about one-half of its width wherein the loop antenna further comprises; first, second, third, fourth and fifth portions connected serially, the first, third and fifth portions each having at least one straight path segment and one meandering segment with a fixed meander height along the length of the meandering path segment, the length of each meandering path segment being about 50% of the length of its respective portion; and the fifth portion being coupled to a current source or transceiver, wherein the open-loop antenna is perpendicular to the card, is non-rotatable relative to the card, and has a generally rectangular shape with four sides, and the first and fifth portions are located along the first side of the open-loop antenna, the second portion is located along the second side of the open-loop antenna, the third portion is located along the third side of the open-loop antenna, and the fourth portion is located along the fourth side of the open-loop antenna, wherein said meandering path segment is split and a portion engages adjacent said card body and has a floating end and other end coupled to a current source or transceiver and operative as electrical delay lines and a full wavelength antenna. - View Dependent Claims (36, 37, 38, 39, 40)
-
Specification