Multiple-band antenna with patch and slot structures
A multiple-band antenna having first and second operating frequency bands is provided. The antenna includes a first patch structure associated primarily with the first operating frequency band, a second patch structure electrically coupled to the first patch structure and associated primarily with the second operating frequency band, a first slot structure disposed between a first portion of the first patch structure and the second patch structure and associated primarily with the first operating frequency band, and a second slot structure disposed between a second portion of the first patch structure and the second patch structure and associated primarily with the second operating frequency band. A mounting structure for the multiple-band antenna is also provided. The mounting structure includes a first surface and a second surface opposite to and overlapping the first surface. The first and second patch structures are mounted to the first surface, and a feeding point and ground point, respectively connected to the first and second patch structures, are mounted to the second surface.
1. A multiple-band antenna comprising:
a first patch structure comprising spaced apart first and second end portions;
a second patch structure electrically coupled to said first patch structure between said first and second end portions thereof;
a first triangularly-shaped slot structure between said first end portion of said first patch structure and said second patch structure;
a second triangularly-shaped slot structure between said second end portion of said first patch structure and said second patch structure; and
a third slot structure having a length tuning at least one operating characteristic of the multiple-band antenna.
2. The multiple-band antenna of claim 1 , wherein said first and second patch structures have a non-planar shape.
3. The multiple-band antenna of claim 1 , wherein each of said first and second triangularly-shaped slot structures has a respective apex portion opening outwardly from said first and second patch structures and a respective base portion opposite the respective apex portion.
4. The multiple-band antenna of claim 1 , wherein dimensions of said first patch structure and said first triangularly-shaped slot structure primarily determine a first operating frequency band, gain of the multiple-band antenna in said first operating frequency band, and impedance of the multiple-band antenna in said first operating frequency band; and wherein dimensions of said second patch structure and said second triangularly-shaped slot structure primarily determine said second operating frequency band, gain of the multiple-band antenna in said second operating frequency band, and impedance of the multiple-band antenna in said second operating frequency band.
5. The multiple-band antenna of claim 4 , wherein said first operating frequency band comprises a transmit sub-band of 880-915 MHz and a receive sub-band of 925-960 MHz; and wherein said second frequency band comprises a transmit sub-band of 1850-1910 MHz and a receive sub-band of 1930-1990 MHz.
6. The multiple-band antenna of claim 1 , wherein said first patch structure further comprises an adjoining portion coupling said first and second end portions to define a substantially C-shaped structure; and wherein said second patch structure is electrically coupled to the adjoining portion.
7. The multiple-band antenna of claim 1 , wherein said multiple-band antenna further comprises:
a feeding point electrically coupled to said second end portion and positioned to overlap said second end portion; and
a ground point electrically coupled to said second patch structure and positioned to overlap said second patch structure.
8. The multiple-band antenna of claim 7 , wherein said first patch structure further comprises a bent portion electrically coupling the feeding point to said second end portion; and wherein said second patch structure comprises a bent portion electrically coupling the ground point to said second patch structure.
9. The multiple-band antenna of claim 1 , further comprising:
a fine tuning tab connected to said second portion of said first patch structure; and
a pair of fine tuning tabs connected to the first portion of the first patch structure.
10. A wireless mobile communication device comprising:
a housing;
at least one wireless transceiver carried by said housing; and
a multiple-band antenna carried by said housing and coupled to said at least one wireless transceiver, said multiple-band antenna comprising
a first patch structure comprising spaced apart first and second end portions,
a second patch structure electrically coupled to said first patch structure between said first and second end portions thereof,
a first triangularly-shaped slot structure between said first end portion of said first patch structure and said second patch structure,
a second triangularly-shaped slot structure between said second end portion of said first patch structure and said second patch structure, and
a third slot structure having a length tuning at least one operating characteristic of the multiple-band antenna.
11. The wireless mobile communication device of claim 10 , wherein said first and second patch structures have a non-planar shape.
12. The wireless mobile communication device of claim 10 , wherein each of said first and second triangularly-shaped slot structures has a respective apex portion opening outwardly from said first and second patch structures and a respective base portion opposite the respective apex portion.
13. The wireless mobile communication device of claim 10 , wherein dimensions of said first patch structure and said first triangularly-shaped slot structure primarily determine a first operating frequency band, gain of the multiple-band antenna in said first operating frequency band, and impedance of the multiple-band antenna in said first operating frequency band; and wherein dimensions of said second patch structure and said second triangularly-shaped slot structure primarily determine said second operating frequency band, gain of the multiple-band antenna in said second operating frequency band, and impedance of the multiple-band antenna in said second operating frequency band.
14. The wireless mobile communication device of claim 13 , wherein said first operating frequency band comprises a transmit sub-band of 880-915 MHz and a receive sub-band of 925-960 MHz; and wherein said second frequency band comprises a transmit sub-band of 1850-1910 MHz and a receive sub-band of 1930-1990 MHz.
15. The wireless mobile communication device of claim 10 , wherein said first patch structure further comprises an adjoining portion coupling said first and second end portions to define a substantially C-shaped structure; and wherein said second patch structure is electrically coupled to the adjoining portion.
16. The wireless mobile communication device of claim 10 , wherein said multiple-band antenna further comprises:
a feeding point electrically coupled to said second end portion and positioned to overlap said second end portion; and
a ground point electrically coupled to said second patch structure and positioned to overlap said second patch structure.
17. The wireless mobile communication device of claim 16 , wherein said first patch structure further comprises a bent portion electrically coupling the feeding point to said second end portion; and wherein said second patch structure comprises a bent portion electrically coupling the ground point to said second patch structure.
18. The wireless mobile communication device of claim 10 , further comprising:
a fine tuning tab connected to said second portion of said first patch structure; and
a pair of fine tuning tabs connected to the first portion of the first patch structure.
19. A method for making a multiple-band antenna comprising:
forming a first patch structure comprising spaced apart first and second end portions;
forming a second patch structure electrically coupled to the first patch structure between the first and second end portions thereof;
forming a first triangularly-shaped slot structure between the first end portion of the first patch structure and the second patch structure;
forming a second triangularly-shaped slot structure between the second end portion of the first patch structure and the second patch structure; and
forming a third slot structure having a length tuning at least one operating characteristic of the multiple-band antenna.
20. The method of claim 19 , wherein forming the first and second patch structures comprises forming the first and second patch structures to have a non-planar shape.
21. The method of claim 19 , wherein forming each of the first and second triangularly-shaped slot structures comprises forming each of the first and second triangularly-shaped slot structures to have a respective apex portion opening outwardly from the first and second patch structures and a respective base portion opposite the respective apex portion.
22. The method of claim 19 , wherein dimensions of the first patch structure and the first triangularly-shaped slot structure primarily determine a first operating frequency band, gain of the multiple-band antenna in the first operating frequency band, and impedance of the multiple-band antenna in the first operating frequency band; and wherein dimensions of the second patch structure and the second triangularly-shaped slot structure primarily determine the second operating frequency band, gain of the multiple-band antenna in the second operating frequency band, and impedance of the multiple-band antenna in the second operating frequency band.
23. The method of claim 22 , wherein the first operating frequency band comprises a transmit sub-band of 880-915 MHz and a receive sub-band of 925-960 MHz; and wherein the second frequency band comprises a transmit sub-band of 1850-1910 MHz and a receive sub-band of 1930-1990 MHz.
24. The method of claim 19 , wherein forming the first patch structure further comprises forming an adjoining portion coupling the first and second end portions to define a substantially C-shaped structure; and wherein the second patch structure is electrically coupled to the adjoining portion.
25. The method of claim 19 , further comprising:
forming a feeding point electrically coupled to the second end portion and positioned to overlap the second end portion; and
forming a ground point electrically coupled to the second patch structure and positioned to overlap the second patch structure.
26. The method of claim 25 , wherein forming the first patch structure comprises forming the first patch structure to have a bent portion electrically coupling the feeding point to the second end portion; and wherein the second patch structure comprises forming the second patch structure to have a bent portion electrically coupling the ground point to the second patch structure.
27. The method of claim 19 , further comprising:
forming a fine tuning tab connected to the second portion of the first patch structure; and
forming a pair of fine tuning tabs connected to the first portion of the first patch structure.