Patent ID: 7564411

Claim:
A frequency tunable, substantially planar, internal antenna, comprising: a. a radiating element including a plurality of slots configured to form a first branch and a second branch within the radiating element; b. a feed point coupled to the radiating element and configured relative to the plurality of slots such that in operation the first branch acts as a first resonator having a first native electrical length and the second branch acts as a second resonator having a second native electrical length; and c. a switching element coupled to the radiating element and configurable in a first position and a second position, where in the first position the switching element connects to a portion of the first branch, forming a connection between two points on the radiating element thereby decreasing the electrical length of the first resonator, and in the second position the switching element connects to a portion of the second branch, forming a connection between two points on the radiating element thereby decreasing the electrical length of the second resonator.