Headset antenna and connector for the same
A headset antenna and a connector for the same are provided. The headset antenna includes an audio signal line, an antenna and a high impedance element in specified application frequency ranges. The audio signal line is adapted for transmitting an audio signal and the antenna is adapted for receiving an RF signal. The high impedance element is disposed on a transmission path of the audio signal and generates a high impedance at a specified frequency band of the RF signal, so that the audio signal line is equivalent to an open circuit and the antenna obtains a better receiving capability.
1. A headset antenna comprising:
a headset, comprising a speaker;
a connector, electrically connected to the speaker through a headset wire;
at least an audio signal line, extended between the speaker and the connector and incorporated in the headset wire, for transmitting an audio signal in a first frequency band;
an antenna, incorporated in the headset wire, wherein the antenna is extended from the speaker to the connector continuously without any high impedance element therein and is capable of receiving an RF signal in a second frequency band different from the first frequency band; and
at least one first high impedance element, correspondingly disposed on a transmission path of the audio signal line, and not electrically connected to the antenna,
wherein an equivalent impedance generated by the first high impedance element in the second frequency band is greater than that generated in the first frequency band.
2. The headset antenna of claim 1 , wherein the connector comprises:
at least one audio pin, correspondingly coupled to the audio signal line; and
an antenna pin, coupled to the antenna,
wherein the first high impedance element integrated on a board of the connector.
3. The headset antenna of claim 1 , wherein the second frequency band of the RF signal comprises a frequency modulation broadcast band.
4. The headset antenna of claim 3 , wherein the frequency modulation broadcast band is from 87 MHz to 108 MHz.
5. The headset antenna of claim 1 , wherein the second frequency band of the RF signal comprises a band from 300 MHz to 3 GHz.
6. The headset antenna of claim 1 , wherein the first frequency band of the audio signal comprises a band from 20 Hz to 20 KHz.
7. The headset antenna of claim 1 , wherein the audio signal line comprises a left sound channel signal line or a right sound channel signal line.
8. The headset antenna of claim 1 , wherein the audio signal line comprises a microphone audio signal line.
9. The headset antenna of claim 1 further comprising;
a ground line, for applying a ground level to the audio signal; and
a second high impedance element, disposed on a transmission path of the ground line.
10. The headset antenna of claim 9 , wherein the second high impedance element is a magnetic bead, an electrical inductor, an iron core, or a resistor.
11. The headset antenna of claim 1 , wherein the first high impedance element is a magnetic bead, an electrical inductor, an iron core, or a resistor.
12. The headset antenna of claim 1 further comprising:
a plurality of data signal lines, for transmitting a plurality of data signals; and
a plurality of second high impedance elements, respectively disposed on transmission paths of the data signal lines.