Patent ID: 8570900
Filing Date: 2013-10-29
Classification: H01Q,H04B

Abstract:
1. An antenna system used in a wireless communication device, comprising: a first antenna that receives and transmits wireless signals; a second antenna that transmits wireless signals; a baseband microchip that electrically connects the first antenna to receive the wireless signals, the baseband microchip processing the wireless signals and providing a voltage logic signal; a signal sensing unit that detects user-induced pressure on the wireless communication device to generate a command signal; a logical circuit that electrically connects the baseband microchip and the signal sensing unit to respectively receive the voltage logic signal and the command signal; and a switch unit that electrically connects the logical circuit and the baseband microchip, wherein the logical circuit logically processes the voltage logic signal and the command signal to generate different switch signals, and the switch unit is controlled by the switch signals from the logical circuit to connect to the first antenna or to the second antenna to transmit the wireless signals; wherein if the signal sensing unit does not detect the user-induced pressure, and the wireless communication device works at frequencies of radio frequency (RF) signals, the logical circuit generates a first switch signal to control the switch unit to connect to the first antenna; if the signal sensing unit detects the user-induced pressure, and the wireless communication device works at a non-predetermined operating frequency of the RF signals, the logical circuit generates the first switch signal to control the switch unit to connect to the first antenna; and if the signal sensing unit detects the user-induced pressure, and the wireless communication device works at a predetermined operating frequency of the RF signals, the logical circuit generates a second switch signal to control the switch unit to connect to the second antenna.