Multi-frequency band antenna
A multi-frequency band antenna includes a carrier, a high-frequency segment, a low-frequency segment, a printed circuit board (PCB) and an inductor. The high-frequency segment is arranged on left side of the carrier and the low-frequency segment is arranged on right side of the carrier. The radiator on the bottom face of the carrier electrically connects with the micro strip of the PCB and the ground line of the ground metal when the carrier is fixed to the PCB. Moreover, the low-frequency segment is corresponding to a metal face with smaller area such that the low-frequency segment is at a free space to enhance the frequency response of the low-frequency segment and the bandwidth of the high-frequency segment. The area and the volume of blind hole on the carrier can adjust the effective dielectric constant to adjust the resonant frequency and bandwidth of the antenna.
1 . A multiple frequency band antenna, comprising:
a carrier, the carrier having a front face, a top face, a back face, a bottom face, a first end face and a second end face opposite the first end face;
a high-frequency radiating segment, the high-frequency radiating segment extending across each of the front face, the top face, the back face, and the bottom face of the carrier; and
a low-frequency radiating segment, the low-frequency radiating segment extending across each of the front face, the top face, the back face, and the bottom face of the carrier, the low-frequency radiating segment being disposed adjacent the high-frequency radiating segment;
wherein the high-frequency radiating segment comprises an L-shaped portion of conductor on the top face of the carrier, the L-shaped portion of conductor extending along a side edge of the top face of the carrier and along a back edge of the top face of the carrier; and
wherein the low-frequency radiating segment comprises a rectangular portion of conductor on the top face of the carrier, the rectangular portion of conductor extending along another side edge of the top face of the carrier, along the back edge of the top face of the carrier, and along a front edge of the top face of the carrier, the rectangular portion of conductor further comprising an L-shaped non-conductive gap, the L-shaped non-conductive gap extending from the back edge of the top face of the carrier towards the front edge of the top face of the carrier and stopping at an intermediary portion of the top face.
2 . The antenna of claim 1 , wherein the high-frequency radiating segment comprises a winding radiating segment extending along portions of the top face and the back face of the carrier.
3 . The antenna of claim 1 , wherein a first edge portion extends along portions of each of the bottom face and the back face of the carrier adjacent the first end face of the carrier and a second perpendicular portion extends perpendicular to the first edge portion.
4 . The antenna of claim 1 , wherein the high-frequency radiating segment comprises a straight radiating segment extending along portions of the front face and the bottom face of the carrier.
5 . The antenna of claim 1 , wherein the high-frequency radiating segment comprises a first L-shaped radiating segment extending along portions of the top face and the back face of the carrier.
6 . The antenna of claim 5 , wherein the high-frequency radiating segment additionally comprises a second L-shaped radiating segment extending along portions of the bottom face and the front face of the carrier.
7 . The antenna of claim 1 , additionally comprising a printed circuit board comprising a top side, a left slanting side, a slanting bottom side, and a right long side, a recessed side, and a right short side, with a first face and a second face, the first face having a first ground metal face, a micro strip and an open area with two fixed ends, the micro strip having a front section and a rear section, wherein the front section extends into the first ground metal face such that a gap is defined between the micro strip and the first ground metal face and comprises a through hole.
8 . The antenna of claim 1 , further comprising:
a plurality of recesses in the front face of the carrier; and
a rib extending between two of the plurality of recesses.
9 . A multiple frequency band antenna, comprising:
a carrier, the carrier having a front face, a top face, a back face, a bottom face, a first end face and a second end face opposite the first end face;
a high-frequency radiating segment, the high-frequency radiating segment extending across each of the front face, the back face, and the bottom face of the carrier; and
a low-frequency radiating segment, the low-frequency radiating segment extending across each of the front face, the back face, and the bottom face of the carrier, the low-frequency radiating segment being located adjacent the high-frequency radiating segment;
wherein the high-frequency radiating segment comprises an L-shaped portion of conductor on the top face of the carrier, the L-shaped portion of conductor extending along a side edge of the top face of the carrier and along a back edge of the top face of the carrier; and
wherein the low-frequency radiating segment comprises a rectangular portion of conductor on the top face of the carrier, the rectangular portion of conductor extending along another side edge of the top face of the carrier, along the back edge of the top face of the carrier, and along a front edge of the top face of the carrier, the rectangular portion of conductor further comprising an L-shaped non-conductive gap, the L-shaped non-conductive gap extending from the back edge of the top face of the carrier towards the front edge of the top face of the carrier and stopping at an intermediary portion of the top face.
10 . The antenna of claim 9 , wherein the high-frequency radiating segment comprises a winding radiating segment extending along portions of the back face of the carrier.
11 . The antenna of claim 9 , wherein a first edge portion extends along portions of each of the bottom face and the back face of the carrier adjacent the first end face of the carrier.
12 . The antenna of claim 9 , wherein the high-frequency radiating segment comprises a straight radiating segment extending along portions of the front face and the bottom face of the carrier.
13 . The antenna of claim 9 , wherein the high-frequency radiating segment comprises a first L-shaped radiating segment extending along portions of the back face of the carrier.
14 . The antenna of claim 13 , wherein the high-frequency radiating segment additionally comprises a second L-shaped radiating segment extending along portions of the bottom face and the front face of the carrier.
15 . The antenna of claim 9 , additionally comprising a printed circuit board comprising a top side, a left slanting side, a slanting bottom side, and a right long side, a recessed side, and a right short side, with a first face and a second face, the first face having a first ground metal face, a micro strip and an open area with two fixed ends, the micro strip having a front section and a rear section, wherein the front section extends into the first ground metal face such that a gap is defined between the micro strip and the first ground metal face and comprises a through hole.
16 . The antenna of claim 9 , further comprising:
a plurality of recesses in the front face of the carrier; and
a rib extending between two of the plurality of recesses.