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Antenna device having electromagnetic shielding

An antenna device, electromagnetic shielding technology, applied in the direction of antenna, antenna coupling, antenna components, etc., to achieve the effect of preventing electromagnetic coupling, weakening electromagnetic interference, and reducing electromagnetic interference

Inactive Publication Date: 2017-02-15
南通沃特光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, typical isolation performance in conventional packaged circuits is about 45dB at 12GHz

Method used

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  • Antenna device having electromagnetic shielding
  • Antenna device having electromagnetic shielding

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Embodiment Construction

[0018] see figure 1 , the present invention provides an antenna device with electromagnetic shielding, comprising: an intermediary carrier 1 having opposite upper and lower surfaces; a groove 2 positioned on the upper surface; a flip chip positioned in the groove 2 Silicon chip 3, the silicon chip 3 has two radio frequency elements 4, 5; the ground layer located on the lower surface, the ground layer is divided into two parts by the lower conductive pattern 10 on the lower surface, the two parts Each radio frequency element 4, 5 is electrically connected to the two parts of the ground plane respectively.

[0019] see figure 2 , the silicon chip 1 has an isolation trench 8 that isolates the two radio frequency components 4, 5, the isolation trench 8 is larger than the maximum size of the two radio frequency components, and the isolation trench 8 is filled with an isolation substance .

[0020] The bottom and side walls of the groove 2 have conductive patterns 6 , and the tw...

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Abstract

The invention provides an antenna device having electromagnetic shielding. The antenna device includes an intermediary support plate, having an upper surface and a lower surface which are opposite; a groove located on the upper surface; a flip silicon chip located in the groove and having two radio frequency elements; and a grounding layer which is located on the lower surface and is separated into two parts by a lower conductive pattern of the lower surface, the two radio frequency elements being electrically connected to the two parts of the grounding layer. The antenna device having electromagnetic shielding can reduce electromagnetic interference between the two radio frequency elements to the greatest extent by utilization of the separated grounding layer, and utilizes a conductive layer of a side face of the support plate to perform secondary electromagnetic shielding, thereby further weakening electromagnetic interference of the outside world; and the silicon chip is provided with an isolation trench, thereby preventing electromagnetic coupling inside the two radio frequency elements.

Description

technical field [0001] The invention relates to an integrated circuit device, in particular to an antenna device capable of preventing electromagnetic interference. Background technique [0002] The development of radio communication systems has led to the implementation of receiver and / or transmitter chains in the form of integrated circuits. Known examples are mobile radio frequency (RF) transceiver circuits for portable devices, satellite communication microwave receivers, wireless local area network radio frequency (WLAN RF) circuits, and the like. [0003] A typical dual polarized receiver chain has RF transmitter and receiver circuits. Because the two receiver chains need to operate simultaneously, interference and electromagnetic coupling between the two receiver chains should be minimized to avoid unwanted intermodulation signals and for optimal operation. [0004] When provided in integrated circuit form, the circuit contains an oscillator with an integrated induc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/52
CPCH01Q1/526
Inventor 王汉清
Owner 南通沃特光电科技有限公司