Method for coupling a signal and an antenna structure
First Claim
1. An antenna structure, which comprisesa first antenna element for receiving or transmitting information, a second antenna element for receiving or transmitting information, a ground plane for grounding the antenna structure, a coupling line for coupling the first antenna element and the second antenna element to each other, and a feeding line for feeding the antenna structure through one feeding point, wherein the first antenna element is a microstrip antenna and is located next to the ground plane and perpendicular to the ground plane;
- and the second antenna element is a microstrip antenna and is located on the ground plane and parallel to the ground plane.
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Abstract
The invention relates to a method for coupling a signal to an antenna structure, as well as to an antenna structure, which comprises at least two antenna elements (101, 102), a ground plane (105) for grounding the antenna structure, a coupling line (106) for coupling a first antenna element and a second antenna element to each other, and a feeding line (107) for feeding the antenna structure through one feeding point. The first antenna element (101) is next to the ground plane and perpendicular to the ground plane (105). The second antenna element (102) is above the ground plane and parallel to the ground plane. The first antenna element is arranged to receive information on a reception band of a broadband radio system and the second antenna element is arranged to transmit information on a transmission band of said broadband radio system. By arranging the second antenna element to be adjustable and by adding antenna element to the antenna structure, the antenna structure according to the invention can be used, for example, in mobile stations of 2nd and 3rd generation mobile communication systems.
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Citations
33 Claims
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1. An antenna structure, which comprises
a first antenna element for receiving or transmitting information, a second antenna element for receiving or transmitting information, a ground plane for grounding the antenna structure, a coupling line for coupling the first antenna element and the second antenna element to each other, and a feeding line for feeding the antenna structure through one feeding point, wherein the first antenna element is a microstrip antenna and is located next to the ground plane and perpendicular to the ground plane; - and
the second antenna element is a microstrip antenna and is located on the ground plane and parallel to the ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for coupling a signal to an antenna structure, which comprises
a first antenna element for receiving or transmitting information, the first antenna element being a microstrip antenna, a second antenna element for receiving or transmitting information, the second antenna element being a microstrip antenna, a ground plane for grounding the antenna structure, a coupling line for coupling the first antenna element and the second antenna element to each other, a feeding line for feeding the antenna structure, and which method comprises coupling transmitted and received signals to the antenna structure through one feeding point, wherein the method comprises positioning the first antenna element next to the ground plane and perpendicular to the ground plane; - and
positioning the second antenna element above the ground plane parallel to the ground plane. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An antenna unit, which comprises
an antenna structure, which antenna structure comprises a first antenna element for receiving or transmitting information, a second antenna element for receiving or transmitting information, a ground plane for grounding the antenna structure, a coupling line for coupling the first antenna element and the second antenna element to each other, and a feeding line for feeding the antenna structure through one feeding point, wherein the antenna structure is manufactured on an insulating material, which has a base, as well as at least one wall region, which wall region reaches in a direction deviating from the base and which shape of the antenna structure follows the shapes of the base and the wall region, and the first antenna element of the antenna structure is a microstrip antenna and is located next to the ground plane and perpendicular to the ground plane and the second antenna element is a microstrip antenna and is located above the ground plane and parallel to the ground plane.
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32. A mobile station, which comprises
a first antenna element for receiving or transmitting information, a second antenna element for receiving or transmitting information, a ground plane for grounding the antenna structure, a coupling line four coupling the first antenna element and the second antenna element to each other, and a feeding line for feeding the first and second antenna elements through one feeding point, wherein the first antenna element is a microstrip antenna and is located next to the ground plane and perpendicular to the ground plane and the second antenna element is a microstrip antenna and is located above the ground plane and parallel to the ground plane.
Specification