Ten-frequency band antenna
A ten-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. The low-frequency segment is located at an opened area and 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 ten-frequency band antenna, comprising:
a rectangular carrier having:
a length extending from a first end to a second end,
a width, the width shorter than the length, and
a height, the height shorter than the length, the rectangular carrier comprising a front face, a top face, a back face and a bottom face, and having a plurality of blind holes defined on the front face and at least one rib between two adjacent blind holes;
a high-frequency segment comprising four radiating sub-segments, the high-frequency segment including:
an inverse π-shaped radiator positioned on at least one face of the rectangular carrier, and
a winding radiator positioned on at least two faces of the rectangular carrier, wherein the high-frequency segment is positioned adjacent the first end of the rectangular carrier; and
a low-frequency segment, wherein the low-frequency segment is positioned adjacent the second end of the rectangular carrier.
2. The ten-frequency band antenna of claim 1 , wherein an area ratio of the blind holes and a volume ratio of the blind holes with respect to the rectangular carrier is adjustable to adjust an effective dielectric constant of the rectangular carrier, thus adjusting resonant frequency and bandwidth.
3. The ten-frequency band antenna of claim 2 , wherein the area ratio of the blind holes on the front face is 30%-50%.
4. The ten-frequency band antenna of claim 3 , wherein the area ratio of the blind holes on the front face is 40%.
5. The ten-frequency band antenna of claim 2 , wherein the volume ratio of the blind holes with respect to the rectangular carrier is 20%-30%.
6. The ten-frequency band antenna of claim 5 , wherein the volume ratio of the blind holes with respect to the rectangular carrier is 24%.
7. The ten-frequency band antenna of claim 1 , wherein the inverse π-shaped radiator has a first straight line portion, a second straight line portion and an L shaped portion, the first straight line portion is arranged on edges of the front face, the top face, the back face and the bottom face of the carrier, a portion of the first straight line portion on the bottom face is used as a fixed point for a PCB.
8. The ten-frequency band antenna of claim 7 , wherein one of the four radiating sub-segments is a straight shape radiator electrically connected to one side of the second straight line portion, the straight shape radiator is arranged on edges of the front face and the bottom face of the carrier, and a portion of the straight shape radiator is arranged on the bottom face and is used as a signal feeding point.
9. The ten-frequency band antenna of claim 7 , wherein one end of the winding radiator electrically connects with one end of the second straight line portion and another end of the winding radiator electrically connects with the low-frequency segment such that a short side of an L-shaped radiator of the inverse π-shaped radiator is coupled to the winding radiator.
10. The ten-frequency band antenna of claim 1 , wherein pitches of the winding radiator are around 0.15 mm to about 0.3 mm to provide an LC resonance with a 2400 MHZ to about 2700 MHZ resonant frequency.
11. The ten-frequency band antenna of claim 8 , wherein one of the four radiating sub-segments is an L-shaped radiator arranged on the front face and bottom face of the rectangular carrier, a short side of the L-shaped radiator is parallel to the straight shape radiator, a long side of the of the L-shaped radiator is vertical to the straight shape radiator and parallel to the winding radiator, the long side of the of the L-shaped radiator provides a ground point.
12. The ten-frequency band antenna of claim 11 , wherein the high-frequency segment provides a fourth frequency band, a fifth frequency band, a sixth frequency band, a seventh frequency band, an eighth frequency band, a ninth frequency band and a tenth frequency band, and the fourth frequency band, the fifth frequency band, the sixth frequency band, the seventh frequency band, the eighth frequency band, the ninth frequency band and the tenth frequency band are within 1710 MHZ to about 6000 MHZ.
13. The ten-frequency band antenna of claim 1 , wherein the low-frequency segment provides a first frequency band, a second frequency band, and a third frequency band, and the first frequency band, the second frequency band, and the third frequency band are within 700 MHZ to about 960 MHZ.
14. The ten-frequency band antenna of claim 1 configured to engage a PCB having a top side, a left slanting side, a slanting bottom side, a right short side, a recessed side and a right long side, the PCB having a first face and a second face, the first face having a first ground metal face and a micro strip, the micro strip having a front section and a rear section, the front section having a through hole, the micro strip having a front section extended into the first ground metal face such that a gap is defined between the micro strip and the first ground metal face, the first face of the PCB having an opened area with two fixing ends.
15. The ten-frequency band antenna of claim 14 , wherein the second face has a second ground metal face, the through hole is opened to the second ground metal face and electrically connects with a signal feeding end of a coaxial cable, the second ground metal face electrically connects with a ground end of the coaxial cable.