Eight-band tablet computer antenna with metal narrow frame

Abstract

The invention discloses an eight-band tablet computer antenna with a metal narrow frame, so as to solve the problem that the tablet computer antenna in the prior art can not cover eight bands in surrounding of a metal narrow frame. The eight-band tablet computer antenna with a metal narrow frame comprises a dielectric material plate 1, a notched metal floor plate 2, a radiation unit 3 and a metalframe 4, wherein the notched metal floor plate 2 and the radiation unit 3 are printed on the front surface of the dielectric material plate 1; the notch in the metal floor plate 2 is located in the middle position of the top edge; the position of the radiation unit 3 is corresponding to the position of the notch; the periphery of the dielectric material plate 1 is surrounded with the metal frame 4provided with a breakpoint gap 7; a gap 6 exists between the metal frame 4 and the dielectric material plate 1; and the metal frame 4 is connected with the metal floor plate 2 through two short circuit connectors 8. The antenna has a small clearance area and can completely cover eight working bands, the antenna bandwidth can be broadened effectively, and the actually-measured efficiency of the antenna meets the application requirements of the tablet computer with the metal narrow frame.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a terminal antenna, specifically an eight-band tablet antenna with a narrow metal frame, which can be used for receiving / transmitting 2G / 3G / 4G signals from a tablet computer with a metal frame. Background technique [0002] In recent years, wireless communication technology has developed rapidly, and mobile communication terminals have gradually evolved into a bridge between people and the Internet. Among them, the tablet computer has become a necessity in people's daily life. Since the metal frame can not only increase the mechanical stability of the device, but also improve the comfort of the user, the tablet computer with the metal frame is becoming a mainstream trend in the market today. However, due to the existence of the metal frame, there is bound to be a strong coupling between the traditional mobile terminal antenna and the metal frame, which directly affec...

AI Technical Summary

Problems solved by technology

For example, in the patent application document with the patent announcement number CN 107394351 A, titled "A Mobile Intelligent Terminal Antenna with All-Metal Shell", a terminal antenna is provided, which divides the metal frame by setting a narrow slit on the metal frame. It is divided into two independent parts, using one of the metal frames as a part of the loop antenna, and finally realized the coverage of seven working frequency bands of GSM850 / 900 / DCS / PCS / UMTS2100 / LTE2300 / 2500. However, this design requires a large headroom. It cannot meet the requirements of narrow borders, and the low frequency does not cover the LTE700 frequency band with wide application prospects

In the patent application document with the patent announcement number CN 107104284 A and the name "full metal ring narrow frame 4G smart phone antenna" provides a full metal ring narrow frame 4G smart phone antenna, in which the design of the antenna maintains a complete Metal frame, but it still fails to cover the LTE700 frequency band, and it loads two lumped elements, as we all know, lumped elements will cause unnecessary loss of antenna efficiency

To sum up, various existing technical solutions have certain defects, and cannot solve the problem of covering eight frequency bands surrounded by metal narrow borders

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