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Handheld wireless device capable of reducing antenna interference

A technology for wireless equipment and antenna interference, which is applied to reduce electrical interference, read/write/query/identify near-field transmission systems, electrical components, etc., to achieve high practical value, reduce antenna interference, and reduce interference effects

Inactive Publication Date: 2020-09-11
XIAN LAMBDA COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the structure of the high-frequency scanning heads of each manufacturer is different, it is difficult to adapt a motherboard to multiple high-frequency scanning heads.

Method used

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  • Handheld wireless device capable of reducing antenna interference
  • Handheld wireless device capable of reducing antenna interference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] This embodiment takes a certain type of high-frequency barcode scanning handheld terminal as an example, such as figure 1 As shown, the working frequency band of the high-frequency barcode scanning handheld terminal is 700-960MHz, 1710-210MHz. The top of the main board 1 is equipped with a communication antenna 3 and a high-frequency scanning head 2. At the same time, this product needs to be compatible with three scanning heads of different sizes. In actual debugging It is found that the three scanning heads cannot replace each other, and often one of the antenna indicators meets the requirements, and the other two high-frequency scanning heads are replaced, and the low-frequency indicators of the antenna drop by 3-5dB.

[0023] The present invention adopts the principle of electromagnetic shielding to shield the scanning heads, and designs a shielding structure 4 based on the maximum physical dimensions of the three scanning heads, such as figure 2 As shown, a line h...

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PUM

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Abstract

The invention discloses a handheld wireless device capable of reducing antenna interference, a mainboard of the handheld wireless device is provided with a data acquisition module and a communicationantenna, the outside of the data acquisition module is provided with a shielding structure, and the shielding structure is provided with a wire hole for going-in and out of a connecting wire of the data acquisition module. The data acquisition module is one of a scanning head, an RFID radio frequency identification module, an ultrahigh frequency UHF module, an NFC reading module and a DPM readingmodule. The data acquisition module is compatible with a plurality of models with different sizes, and the shielding structure is larger than the maximum model size. According to the handheld wirelessdevice capable of reducing the antenna interference, the electromagnetic shielding principle is adopted, during early-stage product design, the shielding structure is arranged outside the data acquisition module, interference to antenna signals can be effectively reduced, meanwhile, the handheld wireless device can be compatible with data acquisition modules of other sizes and models, and the handheld wireless device has very high practical value.

Description

technical field [0001] The invention relates to the field of wireless signal shielding, in particular to a hand-held wireless device for reducing antenna interference. Background technique [0002] With the development of Internet technology, the traditional manual input mode has been increasingly unable to meet the development requirements of enterprises. Therefore, the office mode of many enterprises has begun to change from the traditional mode to the information mode. Data collection and data processing through industrial-grade mobile handheld terminals can improve on-site work efficiency for enterprises and enhance their market competitiveness. [0003] However, for enterprises that need to purchase industrial-grade mobile handheld terminals, there are many manufacturers and products in the market, and many times they do not know which product is suitable for them, and there is a lot of confusion. The following points should be considered when designing an industrial-...

Claims

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Application Information

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IPC IPC(8): H04B15/02H04B5/00
CPCH04B15/02H04B5/77
Inventor 刘洋赵鲁豫
Owner XIAN LAMBDA COMM TECH CO LTD