Multi-frequency antenna and wireless communication device with same

Abstract

A multi-frequency antenna comprises a feed-in end, a first ground connection part, a second ground connection part, a first emission arm, a second emission arm, a third emission part and a fourth emission part, wherein, the first ground connection part and the second ground connection part are adjacently arranged at two sides of the feed-in end; the two ends of the first emission arm are respectively fixedly connected on the first ground connection part and the feed-in end; the second emission arm and the third emission arm are formed by extending outward the first emission arm and share the feed-in end; one end of the fourth emission arm is fixedly connected on the second ground connection, and is formed by extending outward the second ground connection part. When the multi-frequency antenna is in work, the signal enters through the feed-in part and acquires transmission paths with different lengths along the first emission arm, the second emission arm, the third emission arm and thefourth emission arm and generates different signal current and resonant frequencies, thus ensuring that the multi-frequency antenna has multi-frequency operating characteristics.

Description

technical field [0001] The present invention relates to an antenna, in particular to a multi-frequency antenna suitable for multiple operating frequencies and a wireless communication device with the multi-frequency antenna. Background technique [0002] With the rapid development of wireless communication technology and information processing technology and the improvement of people's living standards, portable wireless communication devices such as mobile phones and personal digital assistants (personal digital assistant, PDA) are emerging and entering thousands of households, making consumers The convenience brought by high technology can be enjoyed anytime and anywhere, making these portable wireless communication devices an indispensable part of modern people's daily life. [0003] In these wireless communication devices, the antenna device used to transmit and receive radio waves to transmit and exchange radio signals is undoubtedly one of the most important components...

AI Technical Summary

Problems solved by technology

Traditional single-frequency antenna devices cannot meet people's needs for multi-band wireless communication devices. Therefore, in order to meet users' needs for multi-band wireless communication devices, multi-band antenna devices need to be used

However, the existing multi-band antennas are generally relatively large in size and may occupy a large part of the space in the wireless communication device, which is not suitable for the development trend of wireless communication devices in the direction of thinner and lighter. With high versatility, it is not easy to meet the requirements of communication systems in different frequency bands at the same time

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