Four-frequency-band printed antenna applied to wireless communications

Abstract

The invention relates to a four-frequency-band printed antenna applied to wireless communications. The four-frequency-band printed antenna applied to the wireless communications is characterized by comprising a substrate unit, a feeder line unit, a first antenna unit, a second antenna unit, a third antenna unit and a dielectric slab unit. The feeder line unit, the first antenna unit, the second antenna unit and the third antenna unit are respectively located on the same face of the dielectric slab unit. The substrate unit is located on the other face of the dielectric slab unit. The first antenna unit, the second antenna unit and the third antenna unit are connected with a conductor of the feeder line unit. The feeder line unit is connected with a conductor of an applied device. When the four-frequency-band printed antenna operates, the first antenna unit arouses a first resonant mode and a third resonant mode, and the second antenna unit and the third antenna unit arouse a second resonant mode and a fourth resonant mode respectively. The four-frequency-band printed antenna is a multi-frequency-band antenna and has the advantages of being easy to obtain, low in cost, high in system integration degree and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication antennas, and relates to a four-band printed antenna applied to wireless communication, so as to realize multi-band coverage with a single antenna in a wireless communication system. Background technique [0002] As an important achievement of the development of modern science and technology, communication technology has become an indispensable and important unit of our daily life. The antenna is one of the important components of the communication system. Its development history can be traced back to 1887. The German physicist Hertz made the first antenna in human history and verified the existence of electromagnetic waves experimentally. The Italian inventor Guglielmo Marconi carried out the world's first transoceanic telegraph sending and receiving experiment in 1901. The basic principle is to use the electromagnetic pulse generated by the closing and opening of the electric key to realize...

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Problems solved by technology

As one of the antenna forms of directional radiation, the microstrip antenna has become the focus of research due to its low profile, easy processing, and low price. However, due to the characteristics of the microstrip antenna, this antenna is a narrowband antenna. At the same time, For the requirements of multi-frequency work, the pattern of multi-frequency microstrip antennas realized by slotting and other forms will also be more expensive than

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