Patent ID: 9083075
Filing Date: 2015-07-14
Classification: H01Q,H04B,H04W

Abstract:
1. A device comprising: an antenna; a first transmitter to generate a first transmit signal on a first output node, a first coupling network that includes a transformer having a primary winding coupled to the first output node and a secondary winding coupled to the antenna; a second transmitter to generate a second transmit signal on a second output node, the second output node being coupled to the antenna via a series connection of a second coupling network and at least a portion of the first coupling network that includes the transformer secondary winding, the first transmitter and the second transmitter operating according to time-division multiple access (TDMA) techniques; and the first coupling network including: a first capacitor having a first terminal and a second terminal, the first terminal of the first capacitor is coupled to the antenna and a first terminal of the secondary winding of the transformer; a first switch coupled between the second terminal of the first capacitor and a constant reference potential; and a second switch is coupled between a second terminal of the secondary winding of the transformer and the constant reference potential.