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Single feeder built-in multi-frequency band antenna for mobile communication terminal

A multi-band antenna and single feeder technology, which is applied in independent antenna unit combinations, antennas, antenna arrays, etc., can solve the problem of narrow bandwidth and achieve the effect of simple feeding circuit, good matching performance, and reduced internal space

Inactive Publication Date: 2007-09-26
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bandwidth of each frequency point of this improved PIFA antenna with multiple U-shaped slots is generally below 5.5%, and there is still the defect that the bandwidth is relatively narrow

Method used

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  • Single feeder built-in multi-frequency band antenna for mobile communication terminal
  • Single feeder built-in multi-frequency band antenna for mobile communication terminal
  • Single feeder built-in multi-frequency band antenna for mobile communication terminal

Examples

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Embodiment Construction

[0015] The single-feed built-in multi-band antenna as an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. During the description, unnecessary details and functions for the present invention are omitted to prevent confusion in the understanding of the present invention.

[0016] Referring to FIG. 3 , as an embodiment, the single-feeder built-in multi-band antenna of the present invention includes a ground plane 31, a short-circuit load connector 32, a feeder 33, a metal strip line 34, a high-frequency resonance unit 35, and a radiation plane 36. The antenna is mounted on one end of a printed circuit board (PCB) of the mobile terminal, and the PCB board is used as a ground plane 31 . The ground plane 31 may be a planar patch. The radiation plate 36 may be a rectangular structure, which is arranged on the top of the antenna and opposite to the ground plate 31 with a predetermined distance therebetween. The radiati...

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PUM

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Abstract

The invention discloses a single feed line inner multiple frequency antennas; it adopts single feed line structure to receive and send multiple frequency signal. The antennas in the invention adopts the structure of plane piece and metal stripline to form the first, the second low frequency radiation frequency; high frequency resonance component is mounted in the Inner space of plane piece and metal stripline, by optimizing the structure and position, at the same time with forming the third radiation frequency, the first, the second resonance frequency are close with each other, so the bandwidth of antennas is extended efficiently. Because the effective usage of structure inner space is used to adjust and form the receiving and sending multiple frequency signals, the antennas can decrease the mobile telephone inner space; at each frequency point, the impedance speciality keeps identical, the feed circuit is simple, matching performance is well, cost is low.

Description

technical field [0001] The invention relates to a single-feeder built-in multi-band antenna for mobile communication terminals. In particular, it relates to a single-feed built-in antenna device for a mobile phone capable of receiving and transmitting multi-band signals. Background technique [0002] Mobile phones initially only worked on a single frequency. Since Europe and Asia usually use one of the two frequencies 900MHz or 1800MHz specified by the European GSM Committee, there are mobile phone antennas that support both frequencies. With the rapid development of mobile communication technologies, the functions of mobile terminals are increasingly diversified. In addition to traditional voice communication through the mobile phone network, the mobile terminal also has functions such as Internet browsing, mobile multimedia reception, wireless navigation and positioning, and mobile digital TV. The technologies they use include Bluetooth, IEEE802.11b (Wireless Local Area...

Claims

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Application Information

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IPC IPC(8): H01Q5/00H01Q21/00H01Q21/30H01Q5/371H01Q5/378
CPCH01Q9/0421H01Q5/371H01Q1/243H01Q5/378H01Q21/30H01Q5/0058H01Q5/0062
Inventor 刘健
Owner PANASONIC CORP
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