Patent ID: 6137996
Filing Date: 2000-10-24
Classification: H01Q

Abstract:
A communications device comprising:a dual orthogonally polarized antenna having an antenna core with a first plurality of orthogonally polarized antenna elements wound about the antenna core in a first direction and with a second plurality of orthogonally polarized antenna elements wound about the antenna core in a second direction; andpolarization averaging and switching circuitry coupled to the antenna, the polarization averaging and switching circuitry comprising:a first switch coupled to the antenna for switching between a first polarization and a second polarization of the antenna;a controller for controlling the switch to switch between the first polarization of the antenna and the second polarization of the antenna;a duplexor coupled to the first switch;a first coupler coupled to the duplexor;a delaying mechanism having a first end and a second end, wherein the delaying mechanism is coupled to the first coupler on the first end;a second RF coupler coupled to the second end of the delaying mechanism;an amplifier coupled between the first coupler and the second RF coupler;a second switch coupled between the first coupler and the first end of the delaying mechanism; anda third RF switch coupled between the second end of the delaying mechanism and the second coupler, wherein the controller is coupled to the second RF switch and the third switch.