Patent ID: 7746284
Filing Date: 2010-06-29
Classification: H01Q,H04B

Abstract:
1. A cross dipole comprising: a first dipole element comprising a first dipole arranged in a first direction and a second dipole arranged in a second direction crossing the first direction, and corresponding to a first frequency band; first and second feed points for applying a signal to the first dipole; third and fourth feed points for applying a signal to the second dipole; a second dipole element comprising a third dipole arranged in the first direction and connected to the first and second feed points through the first dipole, and a fourth dipole arranged in the second direction and connected to the third and fourth feed points through the second dipole; and a first switch formed between the first dipole element and the second dipole element and selectively conducting by an external control signal, wherein the second dipole element corresponds to a second frequency band that is lower than the first frequency band.