WO2021056802A1 - 5g天线pcb幅度一致性的控制方法 - Google Patents
5g天线pcb幅度一致性的控制方法 Download PDFInfo
- Publication number
- WO2021056802A1 WO2021056802A1 PCT/CN2019/121158 CN2019121158W WO2021056802A1 WO 2021056802 A1 WO2021056802 A1 WO 2021056802A1 CN 2019121158 W CN2019121158 W CN 2019121158W WO 2021056802 A1 WO2021056802 A1 WO 2021056802A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- consistency
- control
- impedance
- antenna pcb
- amplitude
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/025—Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0005—Apparatus or processes for manufacturing printed circuits for designing circuits by computer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
Definitions
- the invention belongs to the technical field of 5G communication-printed circuit board manufacturing, and specifically relates to a method for controlling the consistency of the 5G antenna PCB amplitude.
- the 5G network is the fifth-generation mobile communication technology; with the birth of 5G technology, many countries and regions are currently attaching great importance to the commercial use of 5G and are already racing to develop 5G network technology.
- the priority layout is the 5G base station
- the core product related to the PCB is the 5G antenna PCB
- the MIMO antenna is the key technology for product processing.
- MIMO antennas differ in form from the design of array antennas. The number is very large, and the units have independent transceiver capabilities, which is equivalent to multi-antenna units simultaneously sending and receiving data. This puts higher requirements on product consistency.
- Its core The index is range range ⁇ 1.0db. To achieve this index requirement, the coupling range of the 5G antenna A/B board needs to be controlled within 0.015mm, which is currently difficult to achieve by conventional methods.
- the current amplitude index is mainly tested by the end customer, which can only be carried out after the components are patched. This is a post-test. Once the amplitude is out of tolerance, it needs to be paired or debugged again, which is time-consuming and laborious, and severe deviations need to be scrapped. The cost is high, so it is necessary to develop a PCB pre-detection method to accurately reflect the consistency of PCB products and reduce the cost of terminal debugging.
- the dielectric thickness and dielectric constant are mainly determined by the performance of the plate, while the copper thickness and line width accuracy are related to the PCB Processing is directly related.
- the coupling range of the 5G antenna A/B board needs to be controlled within 0.015mm.
- the current conventional process is difficult to meet, especially the mass production quality is difficult to guarantee. Therefore, how to ensure the consistency of mass production stably and efficiently has become a problem to be solved in the PCB industry.
- the present invention provides a control method for 5G antenna PCB amplitude consistency.
- the present invention can stably and efficiently ensure the consistency of 5G antenna mass production, and can accurately detect at the PCB stage, thereby reducing the debugging cost of end customers.
- a method for controlling the consistency of the 5G antenna PCB amplitude which is characterized in that it includes a consistency processing method of the 5G antenna PCB and a 5G antenna PCB consistency detection method;
- the consistent processing method of the 5G antenna PCB includes the following:
- the method for controlling copper thickness and electroplating uniformity includes:
- Pre-cut copper for blind hole plate 1OZ thinning to 0.33 OZ, control the copper thickness tolerance within ⁇ 2.0um;
- VCP plating control copper thickness and uniformity ⁇ 5um
- the method of line width accuracy control includes:
- the method for controlling the coupling distance range includes:
- Etching consistency control line synchronous etching
- the method for controlling the consistency of the product impedance is: the impedance tolerance of the surrounding impedance bars is controlled by ⁇ 2%, and the maximum range of the batch is less than or equal to 2 ohms.
- the project detects the coupling line distance and line width of all the array antennas, and controls the deviation ⁇ 0.01mil; at the same time, referring to the coupling line, an impedance bar is added around the process side, Provide measurement basis for consistency control; through the control of copper thickness, pattern transfer accuracy, line width etching accuracy and consistency, the processing requirements of coupling line pitch etching range ⁇ 0.015mm are achieved, and the high accuracy of impedance tolerance ⁇ 2% is achieved Processing to ensure the consistency of product processing. ...
- the method for detecting the consistency of the 5G antenna PCB includes the following:
- the special engineering design includes, referring to the coupled line, impedance bars are designed around the process side.
- the method for matching the serial number is: fully measuring the impedance after the ET test, and matching the serial number according to the impedance range, so as to ensure the consistency of the amplitude of the 5G antenna A/B board.
- the amplitude and consistency usually require the end customer to test after the components are mounted, which is a post-test. Once the amplitude is out of range, it needs to be re-paired or debugged, which is time-consuming and labor-intensive, and serious deviations. It needs to be scrapped, and the cost is high.
- pre-detection can be carried out in the PCB stage, and then the serial number is matched, thereby reducing the cost of terminal debugging.
- Fig. 1 is a process flow diagram of an embodiment of the present invention.
- a method for controlling the consistency of the 5G antenna PCB amplitude which is characterized in that it includes a consistency processing method of the 5G antenna PCB and a 5G antenna PCB consistency detection method;
- the consistent processing method of the 5G antenna PCB includes the following:
- the method for controlling copper thickness and electroplating uniformity includes:
- Pre-cut copper for blind hole plate 1OZ thinning to 0.33 OZ, control the copper thickness tolerance within ⁇ 2.0um;
- VCP plating control copper thickness and uniformity ⁇ 5um
- the method of line width accuracy control includes:
- the method for controlling the coupling distance range includes:
- Etching consistency control line synchronous etching
- the method for controlling the consistency of the product impedance is: the impedance tolerance of the surrounding impedance bars is controlled by ⁇ 2%, and the maximum range of the batch is less than or equal to 2 ohms.
- the project detects the coupling line distance and line width of all the array antennas, and controls the deviation ⁇ 0.01mil; at the same time, referring to the coupling line, an impedance bar is added around the process side, Provide measurement basis for consistency control; through the control of copper thickness, pattern transfer accuracy, line width etching accuracy and consistency, the processing requirements of coupling line pitch etching range ⁇ 0.015mm are achieved, and the high accuracy of impedance tolerance ⁇ 2% is achieved Processing to ensure the consistency of product processing. ...
- the method for detecting the consistency of the 5G antenna PCB includes the following:
- the special engineering design includes, referring to the coupled line, impedance bars are designed around the process side.
- the method for matching the serial number is: fully measuring the impedance after the ET test, and matching the serial number according to the impedance range, so as to ensure the consistency of the amplitude of the 5G antenna A/B board.
- a method for controlling the consistency of the 5G antenna PCB amplitude which is characterized in that it includes a consistency processing method of the 5G antenna PCB and a 5G antenna PCB consistency detection method;
- the consistent processing method of the 5G antenna PCB includes the following:
- the method for controlling copper thickness and electroplating uniformity includes:
- Pre-cut copper for blind hole plate 1OZ thinning to 0.33 OZ, control the copper thickness tolerance within ⁇ 2.0um;
- VCP plating control copper thickness and uniformity ⁇ 5um
- the method of line width accuracy control includes:
- the method for controlling the coupling distance range includes:
- Etching consistency control line synchronous etching
- the method for controlling the consistency of the product impedance is: the impedance tolerance of the surrounding impedance bars is controlled by ⁇ 2%, and the maximum range of the batch is less than or equal to 2 ohms.
- the project detects the coupling line distance and line width of all the array antennas, and controls the deviation ⁇ 0.01mil; at the same time, referring to the coupling line, an impedance bar is added around the process side, Provide measurement basis for consistency control; through the control of copper thickness, pattern transfer accuracy, line width etching accuracy and consistency, the processing requirements of coupling line pitch etching range ⁇ 0.015mm are achieved, and the high accuracy of impedance tolerance ⁇ 2% is achieved Processing to ensure the consistency of product processing. ...
- the method for detecting the consistency of the 5G antenna PCB includes the following:
- the special engineering design includes, referring to the coupled line, impedance bars are designed around the process side.
- the method for matching the serial number is: fully measuring the impedance after the ET test, and matching the serial number according to the impedance range, so as to ensure the consistency of the amplitude of the 5G antenna A/B board.
- the amplitude and consistency usually require the end customer to test after the components are mounted, which is a post-test. Once the amplitude is out of range, it needs to be re-paired or debugged, which is time-consuming and labor-intensive, and serious deviations. It needs to be scrapped, and the cost is high.
- pre-detection can be carried out in the PCB stage, and then the serial number is matched, thereby reducing the cost of terminal debugging.
- This embodiment provides a method for controlling the amplitude consistency of a 5G antenna PCB.
- this embodiment is suitable for controlling the amplitude consistency of a 3-layer 5G antenna PCB; specifically including the following:
- the full-measured copper surface shall be strictly controlled at 40 ⁇ 3um.
- the A/B board is arranged for simultaneous etching
- the amplitude value test is carried out according to the impedance range gradient
- the impedance range is controlled within 1.5 ohms, and the consistency requirement of amplitude ⁇ 1.0db can be achieved.
- pre-detection can be performed at the PCB stage, and then the serial number is paired, thereby reducing the cost of terminal debugging.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Details Of Aerials (AREA)
Abstract
Description
5G天线 | A/B板阻抗值 | 阻抗极差 | 幅度一致性(极差) | 要求值 | 测试结果 |
001 | 79.0-81.0 | 2.0 | 1.3deb | ≤1.0db | NG |
002 | 79.1-80.8 | 1.7 | 1.1db | ≤1.0db | NG |
003 | 79.2-80.2 | 1.5 | 0.97db | ≤1.0db | OK |
004 | 79.2-80.4 | 1.2 | 0.83db | ≤1.0db | OK |
005 | 79.2-80.2 | 1.0 | 0.71db | ≤1.0db | OK |
Claims (8)
- 一种5G天线PCB幅度一致性的控制方法,其特征在于,包括5G天线PCB的一致性加工方法和5G天线PCB一致性检测方法;所述5G天线PCB的一致性加工方法包括以下:A、铜厚及电镀均匀性控制;B、线宽精度控制;C、耦合线距极差控制;D、产品阻抗一致性控制。
- 根据权利要求1所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述5G天线PCB一致性检测方法包括以下:E、工程特殊设计;F、找出阻抗偏差与幅度一致性的相互关系,确定最大极差控制范围;G、序列号匹配。
- 根据权利要求1所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述铜厚及电镀均匀性控制的方法包括:A1、盲孔板预先减铜:1OZ减薄到0.33 OZ,控制铜厚公差±2.0um以内;A2、VCP电镀控制铜厚及均匀性:±5umA3、砂带研磨后全测面铜:按40um标准值控制,公差±3.0um。
- 根据权利要求1所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述线宽精度控制的方法包括:B1、优化蚀刻参数,找出最佳蚀刻因子;B2、根据侧蚀量,修正工程线宽补偿值。
- 根据权利要求1所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述耦合线距极差控制的方法包括:C1、工程线距检测:偏差±0.01mil;C2、图形转移精度控制:LDI激光成像,极差≤0.010mm;C3、蚀刻一致性控制:线路同步蚀刻;C4、首、尾件测量极差:极差≤0.015mm。
- 根据权利要求1所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述产品阻抗一致性控制的方法为:四周阻抗条的阻抗公差按±2%控制,批次最大极差≤2欧姆。
- 根据权利要求2所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述工程特殊设计包括,参考耦合线,在工艺边四周均设计阻抗条。
- 根据权利要求2所述的5G天线PCB幅度一致性的控制方法,其特征在于,所述序列号匹配的方法为:ET测试后全测阻抗,根据阻抗极差匹配序列号,从而确保5G天线A/B板幅度的一致性。
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CN201910904724.1A CN110798963B (zh) | 2019-09-24 | 2019-09-24 | 5g天线pcb幅度一致性的控制方法 |
CN201910904724.1 | 2019-09-24 |
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CN112067894A (zh) * | 2020-07-14 | 2020-12-11 | 深圳捷豹电波科技有限公司 | 毫米波天线阻抗一致性检测方法、装置、设备及存储介质 |
CN112867263A (zh) * | 2021-01-31 | 2021-05-28 | 惠州中京电子科技有限公司 | 一种用于5g基站天线耦合器印制电路板制作方法 |
CN115786914A (zh) * | 2021-09-10 | 2023-03-14 | 大富科技(安徽)股份有限公司 | 一种铝质天线蚀刻方法 |
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