Plastic for antenna oscillator

An antenna vibrator and plastic technology, applied in the field of antennas, can solve the problems of base station antenna performance deterioration, uneven surface morphology, large surface roughness, etc., to eliminate the influence of carbonization, low surface roughness, and good shape consistency Effect

Active Publication Date: 2021-12-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existing plastic vibrators in the process of forming metal circuits, there will be some processing defects, such as excessive surface roughness after plastic roughening, uneven and unstable surface topography, and plastic defects generated during laser processing. Carbonized particles, burrs generated during metallization, etc. These defects are unstable sources of PIM and will deteriorate PIM
When signals of different carrier frequencies are transmitted in the above-mentioned plastic vibrator with significant defects, PIM intermodulation signals will be generated, which will lead to the deterioration of the performance of the base station antenna
Therefore, it is difficult to implement the existing plastic vibrator in the application of FDD (Frequency-division duplex, frequency-division duplex) antenna

Method used

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  • Plastic for antenna oscillator
  • Plastic for antenna oscillator
  • Plastic for antenna oscillator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] This embodiment provides a kind of plastic, comprises the component of following parts by weight:

[0085] Liquid crystal polyester: 45 parts

[0086] Titanium dioxide: 35 parts

[0087] Silica microspheres: 10 parts

[0088] Flat fiberglass: 10 parts

[0089] The D50 of the silica microspheres is 5 μm. The flat glass fiber is alkali-free glass fiber with a section thickness of 7 μm.

[0090]The plastic used in this embodiment is titanium dioxide. On the one hand, titanium dioxide has strong reflectivity to laser light, which can significantly reduce or eliminate the influence of carbonization of plastic substrates caused by laser processing; at the same time, because titanium dioxide has a high dielectric constant and low dielectric loss, it can As a dielectric modifier to obtain high dielectric and low loss materials. The components of liquid crystal polyester, silica microspheres and flat glass fibers can be chemically etched, and after etching, a stable low-rou...

Embodiment 2

[0093] This embodiment provides a kind of plastic, comprises the component of following parts by weight:

[0094] Liquid crystal polyester: 61 parts

[0095] Titanium dioxide: 6 parts

[0096] Silica microspheres: 23 parts

[0097] Flat fiberglass: 10 parts

[0098] The D50 of the silica microspheres is 5 μm. The flat glass fiber is alkali-free glass fiber with a section thickness of 7 μm.

[0099] The material of this embodiment has characteristics of lower dielectric constant, low dielectric loss, low cost, low PIM, and high strength.

[0100] The plastic tensile strength of this embodiment is 125Mpa. The plastic of this embodiment is injection molded into a plastic plate, and then a chemical corrosion solution is used to corrode the plastic plate, so that the surface of the plastic plate forms a rough surface with a surface roughness Ra of 2.6 μm, and then the plastic plate is plated with grounding layer metal and Microstrip line, get simplified microstrip transmissio...

Embodiment 3

[0102] This embodiment provides a kind of plastic, comprises the component of following parts by weight:

[0103] Liquid crystal polyester: 45 parts

[0104] Titanium dioxide: 35 parts

[0105] Silica microspheres: 20 parts

[0106] The D50 of the silica microspheres is 5 μm.

[0107] The material in this embodiment has the characteristics of relatively high dielectric constant, low dielectric loss, low cost, low PIM, and high strength.

[0108] The tensile strength of the plastic in this embodiment is 118Mpa. The plastic of this embodiment is injection molded into a plastic plate, and then a chemical corrosion solution is used to corrode the plastic plate, so that the surface of the plastic plate forms a rough surface with a surface roughness Ra of 2.5 μm, and then the ground layer metal and Microstrip line, get simplified microstrip transmission line slab. Tested with the same method as in Example 1, the average value of the third-order PIM of the material in this examp...

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Abstract

The embodiment of the invention provides a plastic which, based on the total weight being 100 parts, comprises the following components in parts by weight: 25-90 parts of matrix resin; 1-60 parts of a laser reflecting agent; and 0-70 parts of an inorganic filler which can be chemically corroded. When the matrix resin comprises a resin component capable of being chemically corroded, the weight part of the inorganic filler is equal to 0 or greater than 0. When all the matrix resin is a resin component which cannot be chemically corroded, the weight part of the inorganic filler is greater than 0. The plastic can be subjected to chemical coarsening to obtain a low-roughness surface, a good coating bonding surface is formed, and metallization is facilitated. Meanwhile, laser can be effectively reflected, the carbonization influence of the plastic is reduced, and PIM sources are reduced from multiple aspects. The plastic can be used for preparing antenna oscillators, and a low PIM value is obtained. The invention also provides an antenna oscillator prepared from the plastic, an antenna, a terminal device and a base station.

Description

technical field [0001] The present application relates to the technical field of antennas, in particular to a plastic used for an antenna vibrator. Background technique [0002] The antenna is a device used to transmit or receive electromagnetic waves. The base station antenna for wireless communication generally consists of a radome, an antenna radiation unit (antenna oscillator), a feed network (power distribution network), a phase shifter, and a reflector. When two or more RF signals with similar frequencies generated by the antenna pass through the antenna radiation unit, feed network, phase shifter, filter and other components, a new PIM (Passive Intermodulation, passive Intermodulation signal), and when the intermodulation signal falls into the receiving frequency range, it will cause interference, reduce the sensitivity of the receiver, and block the communication in severe cases. Therefore, the PIM problem of the device must be considered in the antenna design, comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L81/02C08L67/02C08L71/12C08L61/16C08K3/22C08K7/18C08K7/14C08K3/24C08K3/34C08K13/04C08J7/06C08J7/12C08J5/18C23C28/02H01Q1/36
CPCC08K3/22C08K7/18C08K7/14C08K3/24C08K3/34C08K13/04C08J7/06C08J7/12C08J5/18C08L67/00C08L81/02C08L71/12C08L61/16C23C28/023C23C28/021H01Q1/364C08K2003/2241C08K2201/003C08J2367/00C08J2481/02C08J2467/02C08J2381/02C08J2467/00C08J2471/12C08J2371/12C08J2361/16C08L67/02C23C28/02C08K3/36C08L67/03C08L81/06H01Q1/246H01Q21/26H01Q21/062C08K2201/005C08K3/346C08L23/0884C08L23/16C08L51/04C08L77/00H01Q1/36H01Q1/38C08K2003/343C08K2201/014C08L71/123C08L2203/20C08L2205/12
Inventor 黎良元张成张曼瑞杨铭
Owner HUAWEI TECH CO LTD
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