Patent ID: 6597926
Filing Date: 2003-07-22
Classification: H01Q,H04B

Abstract:
A wireless-communication apparatus with antenna-gain diversity, the wireless-communication apparatus comprising:a first and a second antenna element which are electro-magnetically coupled; and a switchable antenna-coupler having: a first antenna-coupling state in which the first and the second antenna element are electrically coupled to an antenna-signal node; a second antenna-coupling state in which the first antenna element is electrically coupled to the antenna-signal node and the second antenna element is electrically coupled to signal ground; and a switch having a first and a second terminal, the first terminal being electrically coupled to the second antenna element and the antenna-signal node, the second terminal being electrically coupled to the signal ground; a coupling circuit between the antenna-signal node and the first terminal of the switch for preventing a signal, which may be present at the antenna-signal node, from substantially flowing to the signal ground via the switch.