Patent ID: 9331398
Filing Date: 2016-05-03
CPC Classification: H01Q

Claim Text:
1. A dual-mode terminal antenna, comprising a main antenna consisting of a main antenna of a first mode and a main antenna of a second mode, and an auxiliary antenna consisting of an auxiliary antenna of the first mode and an auxiliary antenna of the second mode, and the dual-mode terminal antenna further comprising an antenna bracket; wherein, the main antenna and the auxiliary antenna are fixed on a same said antenna bracket, and the main antenna of the first mode, the auxiliary antenna of the first mode, the main antenna of the second mode and the auxiliary antenna of the second mode are each configured with a spring leaf; wherein, when the antenna bracket is clasped on a main board, four spring leaves of the main and auxiliary antennas contact with four antenna feeding points on the main board respectively; and wherein, an LC resonant circuit is disposed ahead of each said antenna feeding point, and four LC resonant circuits respectively resonate at a working frequency band of the antenna corresponding to the antenna feeding point with which each said LC resonant circuit connects, wherein, when the dual-mode terminal receives a signal of the first mode via the main antenna or the auxiliary antenna of the first mode, the LC resonant circuit disposed ahead of the antenna feeding point of the second mode creates high impendence to the signal of the first mode, so that a subsequent circuit of the second mode is unable to receive the signal of the first mode, wherein, when the dual-mode terminal receives a signal of the second mode via the main antenna or the auxiliary antenna of the second mode, the LC resonant circuit disposed ahead of the antenna feeding point of the first mode creates high impendence to the signal of the second mode, so that a subsequent circuit of the first mode is unable to receive the signal of the second mode, thus avoiding interference and loss of the signal of the first mode and the signal of the second mode.