Multiband radio antenna with a flat parasitic element
First Claim
1. A multiband radio antenna device for a radio communication terminal, the multiband radio antenna device comprising:
- a flat ground substrate;
a flat parasitic element in a plane parallel to said ground substrate, the flat parasitic element having a ground connection;
a flat antenna element having a feeding point and a ground connection, wherein said antenna element has a first longitudinal member, a first transverse member extending from a first end portion of said first longitudinal member, and a second transverse member extending from said first longitudinal member in the same direction as said first transverse member, wherein said parasitic element extends parallel to said second transverse member, wherein said second transverse member extends from a center portion of said first longitudinal member, wherein said parasitic element extends between said first and second transverse members, along and adjacent to an outer portion of said second transverse member from a center portion of the second transverse member, wherein said feeding point is disposed at said center portion of the second transverse member, wherein a first ground connection of the antenna element is disposed at an end portion, opposite said longitudinal member, of the second transverse member, and wherein a second ground connection of the antenna element is disposed at a center portion of said first transverse member.
1 Assignment
0 Petitions
Accused Products
Abstract
A multiband radio antenna device (1) for a radio communication terminal, comprising a flat ground substrate (2), and in a plane parallel to said ground substrate a flat parasitic element (7) and a flat antenna element (3). Said antenna element has a longitudinal member (4), a first transverse member (5) extending from a first end portion of said longitudinal member, and a second transverse member (6) extending from a centre portion of said longitudinal member, wherein said parasitic element extends adjacent to an outer portion of and parallel to said second transverse member. A feeding point (8) is disposed at a center portion of said second transverse member. The parasitic element has a first ground connection (9) adjacent to said feeding point, a second ground connection (10) is disposed at an end portion of said second transverse member, and a third ground connection (11) is disposed at a center portion of said first transverse member.
55 Citations
20 Claims
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1. A multiband radio antenna device for a radio communication terminal, the multiband radio antenna device comprising:
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a flat ground substrate; a flat parasitic element in a plane parallel to said ground substrate, the flat parasitic element having a ground connection; a flat antenna element having a feeding point and a ground connection, wherein said antenna element has a first longitudinal member, a first transverse member extending from a first end portion of said first longitudinal member, and a second transverse member extending from said first longitudinal member in the same direction as said first transverse member, wherein said parasitic element extends parallel to said second transverse member, wherein said second transverse member extends from a center portion of said first longitudinal member, wherein said parasitic element extends between said first and second transverse members, along and adjacent to an outer portion of said second transverse member from a center portion of the second transverse member, wherein said feeding point is disposed at said center portion of the second transverse member, wherein a first ground connection of the antenna element is disposed at an end portion, opposite said longitudinal member, of the second transverse member, and wherein a second ground connection of the antenna element is disposed at a center portion of said first transverse member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radio communication terminal comprising:
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a radio transmitter; and a multiband radio antenna device coupled to the radio transmitter, the multiband radio antenna device comprising, a flat ground substrate, a flat parasitic element in a plane parallel to said ground substrate, the flat parasitic element having a ground connection, and a flat antenna element having a feeding point and a ground connection, wherein said antenna element has a first longitudinal member, a first transverse member extending from a first end portion of said first longitudinal member, and a second transverse member extending from said first longitudinal member in the same direction as said first transverse member, wherein said parasitic element extends parallel to said second transverse member, wherein said second transverse member extends from a center portion of said first longitudinal member, wherein said parasitic element extends between said first and second transverse members, along and adjacent to an outer portion of said second transverse member from a center portion of the second transverse member, wherein said feeding point is disposed at said center portion of the second transverse member, wherein a first ground connection of the antenna element is disposed at an end portion, opposite said longitudinal member, of the second transverse member, and wherein a second ground connection of the antenna element is disposed at a center portion of said first transverse member. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification