TUNABLE ANTENNA

摘要

A tunable antenna including a first radiating element, a second radiating element, a connection circuit and a switch circuit is provided. The first radiating element includes a coupling portion and a first feeding portion. The second radiating element includes a second feeding portion, a grounding portion and a radiation portion. The grounding portion is electrically connected to a ground plane, and the radiation portion surrounds the coupling portion to form a first coupling gap and the second coupling gap. The connection circuit is electrically connected to the radiation portion and a state of the connection circuit is changed according to a control signal, so as to adjust a length of the resonant path of the radiation portion. A feeding signal is transmitted to the first feeding portion or the second feeding portion by the switch circuit.

主权项

1. A tunable antenna, comprising:
a first radiating element including a coupling portion and a first feeding portion; a second radiating element including a second feeding portion, a grounding portion and a radiation portion, wherein the grounding portion is electrically connected to a ground plane, and the radiation portion surrounds the coupling portion to form a first coupling gap and a second coupling gap; a connection circuit electrically connected to the radiation portion, wherein a state of the connection circuit is changed via a control signal to adjust a length of the resonant path of the radiation portion; and a switch circuit capable of transmitting a feeding signal to the first feeding portion or the second feeding portion.