Patent ID: 7508345
Filing Date: 2009-03-24
Classification: H01Q

Abstract:
1. A PIFA antenna arrangement for at least two mobile radio frequency bands having a desired separation from one another comprising: a first antenna branch having a first section, a second section, a foot portion, and a first turning point, wherein the second section is connected to the first section and the foot portion, and the first turning point is located between the first and second sections; a second antenna branch being alongside the first antenna branch and having a third section, a fourth section, and a second turning point, wherein the first antenna branch and the second antenna branch are in the form of strips and connected at the foot portion of the first antenna branch to form a series connection, the first section is parallel to the third section, the second section is parallel to the fourth section, a first gap is formed between the first and third sections, a second gap is formed between the second and fourth sections, and the first gap equals the second gap; a ground connection, arranged at an outer edge of the first antenna branch facing away from the first gap; and an RF supply connection is arranged at the outer edge of the second end of the first antenna branch where the ground connection is provided; wherein the widths of the first antenna branch and the second antenna branch, the lengths of the first antenna branch and the second antenna branch, and the gaps between the first antenna branch and the second antenna branch are of such a size that the PIFA antenna structure has two resonant frequency bands that conform to the desired separation.