Loop antenna assembly for telecommunication devices

Claim 2

An antenna assembly for a hand-held radio frequency transceiver having a signal conductor and a ground conductor, said antenna assembly comprising: a conductive ground plane element; a dielectric substrate element having a first surface, said first surface maintained a predetermined distance away from the conductive ground plane element; and a loop element disposed upon the first surface of the dielectric substrate element, said loop element having first and second ends disposed generally opposite each other, the signal conductor of the transceiver being coupled proximate said first end, and the ground conductor being coupled proximate said second end, said loop element having a plurality of side elements each having an associated width presented on the dielectric substrate, and wherein the widths of at least a pair of said plurality of side elements are substantially different.

Claim 3

The antenna assembly according to claim 1 wherein at least a portion of the ground plane element is defined by either a printed circuit board or a battery pack or a conductive panel of the transceiver.

Claim 4

The antenna assembly according to claim 1 wherein the dielectric substrate element has a dielectric constant of between 1 and 10.

Claim 5

The antenna assembly according to claim 3 wherein the dielectric substrate element has a dielectric constant between approximately 9 and 10.

Claim 6

The antenna assembly according to claim 1 wherein the loop element is generally square in shape having a top side, a bottom side, a right side, and a left side, and said top side and said bottom side having equal widths, and said right side and said left side having equal widths.

Claim 7

The antenna assembly according to claim 5 wherein the top side width and right side width are related by a ratio of approximately 2:1.

Claim 8

The antenna assembly according to claim 1 wherein the loop element has a length of approximately one wavelength of a frequency selected within an operating range of frequencies of the transceiver.

Claim 9

The antenna assembly according to claim 1 wherein the dielectric substrate element is substantially planar in form.

Claim 10

The antenna assembly according to claim 1 wherein the antenna assembly is disposed near a top portion of the transceiver during use.

Claim 11

The antenna assembly according to claim 1 wherein the predetermined distance of the first surface of the dielectric substrate element to the ground plane element is approximately between 0.05 to 0.30 times a wavelength of a frequency selected within an operating range of frequencies of the transceiver.

Claim 12

The antenna assembly according to claim 1 wherein the dielectric substrate element is disposed upon at least a portion of the conductive ground plane element.

Claim 13

A portable radio frequency communication device comprising: an electrical apparatus having a signal conductor and an associated ground conductor and a ground plane element; a loop element having generally opposite ends disposed relative to the ground plane element, said loop element being electrically coupled at one end to the signal conductor and at the other end to the ground conductor, said loop element having a plurality of side elements, each of said side elements having an associated width, and at least a pair of said plurality of side elements having different widths; and a dielectric substrate element disposed between the loop element and at least a portion of the ground plane element.

Claim 14

A portable radio frequency communication device comprising: an electrical apparatus having a signal conductor and an associated ground conductor and a ground plane element; a loop element having generally opposite ends disposed relative to the ground plane element, said loop element being electrically coupled at one end to the signal conductor and at the other end to the ground conductor, said loop element having a plurality of side elements, each of said side elements having an associated width, and at least a pair of said plurality of side elements having different widths; and a dielectric substrate element disposed between the loop element and at least a portion of the ground plane element.

Claim 15

The portable radio frequency communication device according to claim 12 wherein the loop element is disposed upon the dielectric substrate element.

Claim 16

The portable radio frequency communication device according to claim 12 wherein the dielectric substrate element is substantially planar in form.

Claim 17

The portable radio frequency communication device according to claim 12 further comprising: a parasitic element disposed away from the active loop conductor element and operatively coupled to the loop element.

Claim 18

A radio frequency communication device, said communication device comprising: a printed circuit board having a radio frequency circuit having a signal conductor and an associated ground conductor and a ground plane; a loop radiating element having a first end and a second end, said loop radiating element being operatively coupled to the signal conductor proximate the first end and to the ground conductor proximate the second end, said loop radiating element having a length between the first end and the second end, said radiating loop element having a plurality of side elements each having an associated width, and wherein the widths of at least a pair of said plurality of side elements are different; and a dielectric substrate element disposed between the loop radiating element and at least a portion of the ground plane.

Claim 19

A radio frequency communication device, said communication device comprising: a printed circuit board having a radio frequency circuit having a signal conductor and an associated ground conductor and a ground plane; a loop radiating element having a first end and a second end, said loop radiating element being operatively coupled to the signal conductor proximate the first end and to the ground conductor proximate the second end, said loop radiating element having a length between the first end and the second end, said radiating loop element having a plurality of side elements each having an associated width, and wherein the widths of at least a pair of said plurality of side elements are different; and a dielectric substrate element disposed between the loop radiating element and at least a portion of the ground plane.

Claim 20

The communication device according to claim 16 wherein the loop radiating element is disposed upon the dielectric substrate element.

Claim 21

The communication device according to claim 16 wherein the dielectric substrate element is substantially planar in form.

Claim 22

The communication device according to claim 16 wherein the dielectric substrate element has a dielectric constant of between 9 and 10.

Claim 23

The radio frequency communication device according to claim 16 further comprising: a parasitic element disposed away from the loop radiating element and being operatively coupled to the conductive loop radiating element.

Claim 24

A transceiver comprising: a radio frequency circuit; a coax feedline having a first and second end and a predetermined diameter, each end having an associated first and second conductor, said fist and second conductor of the first end being operatively coupled to the radio frequency circuit; a conductive ground plane circuit; a dielectric substrate element having a first surface, said first surface maintained a predetermined distance away from the conductive ground plane element, said dielectric substrate having an aperture sized in relation to the predetermined diameter to pass both the first and second conductors of the second end of the coax feedline; and a loop element disposed upon the first surface of the dielectric substrate element, said loop element having opposed first and second ends and an area intermediate said first and second ends, said intermediate area containing the aperture of the dielectric substrate, said first and second ends of the loop being respectively coupled to the first and second conductors associated with the second end of the coax feedline, said loop element having a plurality of side elements each having an associated width presented on the dielectric substrate, and wherein the widths of at least a pair of said plurality of side elements are different.

Claim 25

A transceiver comprising: a radio frequency circuit; a coax feedline having a first and second end and a predetermined diameter, each end having an associated first and second conductor, said fist and second conductor of the first end being operatively coupled to the radio frequency circuit; a conductive ground plane circuit; a dielectric substrate element having a first surface, said first surface maintained a predetermined distance away from the conductive ground plane element, said dielectric substrate having an aperture sized in relation to the predetermined diameter to pass both the first and second conductors of the second end of the coax feedline; and a loop element disposed upon the first surface of the dielectric substrate element, said loop element having opposed first and second ends and an area intermediate said first and second ends, said intermediate area containing the aperture of the dielectric substrate, said first and second ends of the loop being respectively coupled to the first and second conductors associated with the second end of the coax feedline, said loop element having a plurality of side elements each having an associated width presented on the dielectric substrate, and wherein the widths of at least a pair of said plurality of side elements are different.

Claim 26

The antenna assembly according to claim 21 wherein the loop element includes a plurality of side elements, and at least a pair of said plurality of side elements having different widths.

Claim 27

The antenna assembly according to claim 21 wherein the ground plane element is defined at least in part by the radio frequency circuit.

Claim 28

A conformal antenna assembly for a radio frequency communication device providing a signal conductor and an associated ground conductor and having a housing, said housing having a formed surface, said conformal antenna assembly comprising: a ground plane element; a dielectric substrate element having a conformed surface disposed between the ground plane element and the formed surface of the housing and being related to the formed surface of the housing, and a loop radiating element disposed upon the conformed surface of the dielectric substrate element, said loop radiating element defining a pair of ends and being coupled proximate one end to the signal conductor, and being coupled proximate the other end to the ground conductor, said loop radiating element having a plurality of side elements each having an associated width presented on the dielectric substrate, and wherein the widths of at least a pair of said plurality of side elements a different.

Claim 29

A conformal antenna assembly for a radio frequency communication device providing a signal conductor and an associated ground conductor and having a housing, said housing having a formed surface, said conformal antenna assembly comprising: a ground plane element; a dielectric substrate element having a conformed surface disposed between the ground plane element and the formed surface of the housing and being related to the formed surface of the housing, and a loop radiating element disposed upon the conformed surface of the dielectric substrate element, said loop radiating element defining a pair of ends and being coupled proximate one end to the signal conductor, and being coupled proximate the other end to the ground conductor, said loop radiating element having a plurality of side elements each having an associated width presented on the dielectric substrate, and wherein the widths of at least a pair of said plurality of side elements a different.

Claim 30

The conformal antenna assembly of claim 24 wherein the formed surface of the communication device and the conformed surface of the dielectric substrate element are both approximately cylindrical in profile.

Claim 31

The conformal antenna assembly of claim 24 wherein the ground plane element is defined at least in part by a printed circuit board or a battery pack or a conductive panel of the communication device.