Electronic device with stylus pen having FM antenna functionality

摘要

An electronic device and its stylus pen having an FM antenna functionality are provided. The stylus pen includes a pen tip, a penholder, and a metal element spirally surrounding the penholder from a first end portion to a second end portion of the penholder. The pen tip is made of conductive material, the penholder is made of insulated material, and at least one end portion of the metal element is electrically coupled to the pen tip. When the pen tip is inserted into an antenna jack defined in the electronic device, the metal element of the stylus pen is electrically coupled via the pen tip to a radio receiving circuit arranged inside the electronic device. The metal element is thereby enabled to act as an FM antenna and is enabled to receive wireless signals from the radio receiving circuit and transmit wireless signals to the radio receiving circuit.

主权项

1. A stylus pen having frequency modulation (FM) antenna functionality, the stylus pen comprising:
a pen tip and a penholder, wherein the pen tip is made of conductive material, and the penholder is made of insulated material; and a metal element having a first end portion and a second end portion, the metal element spirally surrounding the penholder from a first end portion to a second end portion of the penholder, wherein at least one of the end portions of the metal element is electrically coupled to the pen tip; wherein when the pen tip of the stylus pen is inserted into an antenna jack defined in an electronic device, the metal element of the stylus pen is electrically coupled via the pen tip to a radio receiving circuit arranged inside the electronic device, and the metal element is thereby enabled to act as an FM antenna of the electronic device, and is enabled to receive wireless signals from the radio receiving circuit and transmit wireless signals to the radio receiving circuit.