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Broadband universal serial bus (USB) dongle antenna

A broadband wireless and data card technology, which is applied to antennas, antenna grounding devices, and devices that enable antennas to work in different bands at the same time, can solve problems such as difficulty in meeting bandwidth requirements, limited antenna working bandwidth, and large SAR value, and achieve improved Antenna efficiency, wide operating bandwidth, and the effect of reducing SAR value

Inactive Publication Date: 2012-02-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of the above-mentioned antenna, on the one hand, makes the working bandwidth of the antenna limited, which makes it difficult to meet the increasing bandwidth requirements; on the other hand, the near-field energy radiated by the antenna is too concentrated, resulting in a large SAR value

Method used

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  • Broadband universal serial bus (USB) dongle antenna
  • Broadband universal serial bus (USB) dongle antenna
  • Broadband universal serial bus (USB) dongle antenna

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the wireless data card includes a data card main board 12 and a USB interface 5 . The USB interface 5 is used for the connection between the wireless data card and the wireless terminal equipment. Such as figure 2 As shown in a and 2c, the antenna radiation system on the data card main board 12 is distributed on two surfaces (lower layer and upper layer) of the data card main board. The antenna routing includes a wide strip 7 and a narrow strip 8. The antenna routing It is arranged on one side (upper layer) of the data card main board 12, and the metal ground 4 is arranged on the other side (lower layer) of the data card main board 12. The settings of the two sides are as follows: figure 2 shown. Such as figure 2 As shown in c, the upper layer is also provided with a matching network 9 and a 50 ohm microstrip feeder 10 . Such as figure 2 As shown in b, the non-metallic area 3 includes the orthographic projection area of ​​the antenna...

Embodiment 2

[0036] It is a further optimized solution based on implementation 1.

[0037] Such as image 3 As shown, the wireless data card includes a data card main board 12 and a USB interface 5 . Such as Figure 4 As shown in a and 4c, the antenna radiation system on the data card main board 12 is distributed on two surfaces (lower layer and upper layer) of the data card main board, and the antenna lines 7 and 8 are arranged on one side of the data card main board 12 (upper layer). ), the metal ground 4 is set on the other side (lower level) of the main board 12 of the data card, and the setting of the two sides is as follows Figure 4 shown. Such as Figure 4 As shown in c, the antenna wiring includes a wide strip 7 and a narrow strip 8, and a matching network 9 and a 50-ohm microstrip feeder 10 are also provided on the upper layer. Such as Figure 4 As shown in b, the orthographic projection area of ​​the antenna wiring on the upper layer on the lower layer is included in the n...

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Abstract

The invention provides an antenna which can acquire a wide work bandwidth on a small size space of a universal serial bus (USB) dongle. Antenna wiring, a microstrip feeding line and a matching circuit are arranged on one side of a USB dongle motherboard. Metal ground is arranged on the other side of the USB dongle motherboard. A non-metal area is arranged in the metal ground and at least one side is not closed by the metal ground. Therefore, a semi-closed area is formed in the metal ground. The non-metal area comprises a corresponding area located on a surface where the metal ground is positioned, wherein the antenna wiring is orthographically projected on the surface where the metal ground is positioned. A coupling gap exists between the antenna wiring and the metal ground in space. The microstrip feeding line performs feeding to the antenna wiring the through matching the network so that a high frequency current is excited on the antenna wiring and resonance is formed. On one hand, the high frequency current of the antenna wiring enters into the metal ground through a narrow strip. On the other hand, the high frequency current excites the high frequency current of the metal ground so as to form the resonance through capacitive coupling of the coupling gap. By using the antenna of the invention, the work bandwidth of an objective resonant point excited on the antenna wiring can be widened and a specific absorption rate (SAR) value can be reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to antenna technology. Background technique [0002] Due to the continuous rise of new data services, many digital wireless terminal devices, such as handheld computers (Personal Digital Assistant, PDA), point of sale terminals (Point of Sale, POS) machines, high-quality multimedia broadcasting (High-qulity Multimedia Broadcasting, HQMB ), a navigator (Navigator), and a portable computer (Laptop), etc., an external wireless data transceiver device is required as an intermediate converter between the terminal equipment and the network to perform wireless data transmission and exchange. A wireless data card (USB (Universal Serial Bus) dongle) is a commonly used external wireless data transceiver device. The wireless data card interface technology can play the role of the above-mentioned wireless data transmission channel because it has a higher connection ra...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q5/01H01Q5/10
Inventor 陈金华班永灵雷传球应李俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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