【经验】一文了解同轴线缆特性阻抗
本文ROSENBERGER将为大家介绍一下在FAKRA产品定制时经常会提到一个重要的参数:特性阻抗。
特性阻抗是长线传输中的概念,通常用来衡量高频领域下系统的对信号的传输能力大小。
对于低频线路,根据欧姆定律:R=U/I 。在高频下,还需要计算信号的波动性,反映传输线任一点特性的参量为反射系数τ和特性阻抗Z,因为传输线上的阻抗不可能始终为一个恒定的值,即阻抗不连续,在这些阻抗变化的点就会产生波的反射,任意传输线上的波均是由入射波和反射波的叠加组成,区别在于入射波与反射波成分的不同。因此,传输线有两种极限状态:
1. 无反射波,反射系数=0,称之为行波状态或匹配;
2. 全反射,反射系数模=1,称之为驻波状态。
传输线上任意点Z’上的反射系数τ(z’)与特性阻抗Z(z’)的关系如下:
其中:
Z0:负载阻抗
传输线上任一点都可以等效为一段匹配线路与一个阻抗为Z’的负载,特性阻抗即为负载上入射波电压与入射波电流之比,类似地,特性阻抗也等于反射波电压与反射波电流之比:
根据阻抗计算公式:
其中:
Z:特性阻抗
R:电阻
L:电感
G:电导
C:电容
j:复数虚部
w:2πf(f=频率)
可知特性阻抗是一个与频率相关的复数。
FAKRA匹配的线路为同轴线缆,在实际应用中,同轴线缆的阻抗可以按如下公式计算:
其中:
Z:特性阻抗
εr:绝缘体的相对介电常数
D:外导体内径
d:内导体外径
可以通过调节连接器及线缆的结构及材质来限制特性阻抗,但FAKRA连接器的导体与线缆需要通过压接装配在一起,这势必会导致连接部位的尺寸变化,因此对于完整的线缆组件,我们也需要验证其特性阻抗是否满足也在规定的范围之内。
阻抗特性测试使用“时域反射法”,特性阻抗分析仪本质上是“高速脉冲源+高宽带取样示波器”模块的有机结合并辅以复杂的校准算法。
如下图所示,测试时通过带宽测试探头向被测线缆组件输入高速脉冲信号,取样接头接受反射信号,采样得到其反射电压,因为入射的阶跃脉冲的幅度是已知的,这样就可以计算出被测线路的反射系数τ,而仪器的输出阻抗为50Ω,根据上述公式,可以计算出反射点的特性阻抗值Z。
罗森伯格实验室现在使用的测试仪器为Keysight公司(是德科技)的E5071C TDR矢网分析仪,测试范围可达300KHz~20GHz,可以满足SAE/USCAR-2, ISO 20860, LV214,等各类汽车行业标准的参数测试要求。
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本文由ll转载自Rosenberger,原文标题为:同轴线缆特性阻抗的介绍及测量,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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【选型】Rosenberger(罗森伯格)射频连接器/电缆组件/转接器/校准件选型指南
目录- 测试产品概述和命名规则介绍 高频 PCB 连接解决方案 多端口板间解决方案 转接器 浮动转接头 微波测试电缆组件 测试计量组件 测试附件及工具 CoMeT 屏蔽测试系统 电缆的使用及维护注意事项 驻波回损对照表
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【产品】汽车级高速迷你FAKRA连接器HFM®,传输速率高达20Gbps
HFM®是Rosenberger推出的下一代汽车同轴连接器,传输速率高达20Gbps。汽车级高速迷你FAKRA连接器HFM®分为PCB连接器和线缆连接器两种,PCB连接器的型号有AMS22A-40MZ5-y,等四款;线缆连接器的型号有AMS11A-1xxZ5y等七款。
For Today and Tomorrow’s Fiber Optic Network Rosenberger Cable Systems FIBER OPTICS AND DATA COMMUNICATION
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罗森伯格提供适用于消融领域的同轴连接器或电缆组件,可同时传输电源、信号、同轴等多种信号
罗森伯格可以提供大量的适用于消融领域的同轴连接器或电缆组件。线缆组件柔软,折弯半径小,电气性能出色,可根据客户需求提供混装连接器及线缆组件。其中射频消融解决方案的端子对端子耐压为320V,工作电流为2A;超声刀解决方案具有大于5000次的互配次数。
【选型】Rosenberger(罗森伯格)应用于通信领域的射频同轴连接器/适配器/附件选型指南
目录- Company Profile Connector Series Tools Packaging and Index
型号- 216533,183523,119 S 64A-500 N5,56 S 107-802 N5,137628,183527,59 K 101-001 L5,100339,32 S 207-307 L5,169219,53 S 152-K00 N5,183530,05 S 132-S00 S3,08 S 118-S00 S3,193334,19 S 201-400 L5,150600,151931,146106,103852,102523,02 K 119-K00 E3,103855,102524,11 W 150-000,102526,139828,53 K 507-106 N5,139826,139824,143090,119 K 101-K00 N5,153Q S 108-106 N5,139829,171556,171555,32 W 100-022/01,227692,32 W 100-022/02,171558,171557,139831,32 W 100-022/03,32 W 100-022/04,171551,100798,29 K 501-500 L5,103824,139836,180487,139834,161744,170219,16 S 132-K00 L5,171543,148789,171541,102502,19 S 101-K20 D3,71 K 507-802 N5,153Q S 101-115 N5,103835,100327,06 S 132-K00 S3,168322,143025,45 S 201-301 L5,143026,100375,275305,28 S 121-K20 N3,71 S 102-110 N5,180464,88 S 171-S00 L5,135898,180466,100392,32 S 105-K00 L5,18 S 24G-40M L5,32 K 601-K00 L5,19 K 119-K38 L5,170631,170630,119 K 112-K00 N5,05 S 151-S20 S3,07 P 151-K00 S3,100386,104745,71 S 102-109 N5,11 W 150-4X,103870,45 K 101-103 L5,32 S 207-307 N5,32 K 724-600 S5,28 S 147-103 N5-RO,104715,11 W 150-450,32 K 101-272 L5,161718,180442,28 S 107-303 N5,218302,285547,28 S 161-102 N5,32 K 243-40M L5,166159,19 K 101-271 L5,207654,207655,18 S 203-40M L5,53 S 301-K00 N5,51 K 607-803 N5,148746,18 S 15R-0.5 E3,39 K 102-102 L5,32 K 107-302 L5,32R S 247-302 L5,104721,100369,104300,103451,16 S 201-270 L5,182271,53 S 17R-001 N3,18 S 102-40M L5,53 S 401-200 N5,53 S 160-SIM N1,26 S 153-S00 A1,106954,101268,150672,192074,244613,159005,103463,28 S 147-103 N5-BL,32 K 145-400 L5,119 K 153-K00 L5,15 S 132-K02 L5,105636,17 S 145-40M L5,71 K 504-200 N5,07 P 132-K00 S3,53 K 401-117 N5,29 S 211-303 L5,56 K 201-200 N5,54 S 151-K00 A1,101244,105601,105606,53 S 1RR-001 N3,182267,182268,165702,103442,182261,182262,182266,148395,32 K 107-306 L5,151556,60 S 131-817 N1,285191,192064,135083,137264,138519,102160,158125,180059,153Q K 153-S00 N5,28 S 147-103 N5-GN,108701,105676,51 K 106-002 N5,171578,28 S 207-307 N5,32 K 601-272 L5,107847,102158,56 Z 112-000 N,139851,65 K 401-272 N1,19 S 132-S00 S3,105681,103022,285127,45 S 105-103 L5,28 K 160-S00 N5,285128,181393,11 W 150-2XX,39 S 132-S00 L5,64 K 101-K00 B1,171568,19 S 14K-40M L5,104346,78 K 104-400 L5,158124,56 S 207-303 N5,32 S 107-303 L5,183546,183543,05 S 432-K00 S3,59 S 132-S00 L5,147490,105653,139867,56 K 101-K00 N5,53 K 405-600 N5,182694,183540,32 K 101-400 L5,147009,119 S 641-500 N5,17 K 117-K04 L5,56 K 405-500 N5,53Q K 105-K00 S3,32 S 160-S00 N5,139877,51 K 553-200 N5,147025,147024,147023,147022,51 S 101-115 N5,51 K 107-803 N5,150669,51 K 611-271 N5,53 K 502-K00 N5,139885,139883,139881,19 S 105-500 L5,180810,208115,51 K 504-200 N5,19 K 101-103 L5,183093,141200,183094,03 S 128-S20 N3,246871,144715,11 W 152-402,28 K 121-K20 N3,45 S 201-400 L5,205084,106436,180816,59 K 101-271 L5,60 S 164-K00 N1,108617,107786,258862,15 S 132-K05 L5,186127,144726,106449,51 Z 322-000,144725,32 K 421-700 S5,102064,53 S 201-K00 N5,60 K 431-815 N1,32 K 722-500 E3,28 S 107-103 N5,32 K 402-500 E3,102060,53 K 301-K00 N5,88 S 203-3V2 L5,19 S 101-40M L5,19 K 106-K00 L5,28 S 247-303 N5-RO,143402,139390,179837,53 K 401-200 N5,195041,107747,32 K 160-S00 N5,32 S 102-272 L5,53 K 409-500 N5,139397,119 S 202-40M L5,196393,29 S 111-101 L5,39 K 20A-271 L5,32 Z 112-000 F,222421,51 K 301-K00 N5,32 K 15R-001 E3,16 S 101-S00 L5,32 K 141-500 L5,32 S 151-K00 L5,106429,209480,53 K 501-200 N5,39 K 202-303 L5,201517,255385,188733,153638,153639,225967,28 S 247-303 N5-SW,19 K 114-K00 L5,184381,32 S 207-303 L5,53 S 107-108 N5,197683,211313,211312,19 S 242-40M L5,108658,28 K 607-302 N5,64 S 161-273 N1,108672,107348,51 S 1RR-001 N4,45 S 101-103 L5,105168,209499,28 K 101-K00 N5,203703,254062,119 K 107-K00 N5,106490,277157,32 S 206-272 L5,247770,247771,142983,100708,71 K 103-400 A5,105131,226839,45 S 106-400 L5,71 S 102-1V6 N5,19 K 202-271 L5,174585,71 S 1RR-001 N4,60 W 000-002,106458,195003,104294,153640,19 S 201-40M L5,153641,51 K 404-200 N5,32 K 401-271 L5,56 K 107-802 N5,162598,32 S 107-306 L5,56 S 151-K00 N5,53 S 114-006 N5,108649,119 S 10B-40M L5,153274,156302,105197,51 K 106-006 N5,53 K 102-K00 N5,157634,183922,53 S 102-015 N5,100737,183925,28 S 207-303 N5,51 S 107-108 N5,108219,156779,06 K 132-K00 S3,71 K 101-109 N5,109562,56 S 107-106 N5,19 S 602-271 L5,102924,144323,11 W 150-401,28 K 132-K00 N5,56 S 101-117 N5,11 W 150-402,11 W 150-403,11 W 150-404,169607,51 Z 110-000 N,156780,102920,59 S 212-400 L5,106021,53 S 205-308 N5,18 K 15R-0.5 E3,170629,53 K 504-273 N5,186175,145665,32 S 207-303 N5,170623,32 K 101-K00 L5,28 W 001-000,51 Z 122-000,105180,142174,71 S 188-K00 L5,102907,53Q K 501-272 N5,32 K 201-400 L5,16 P 101-40M L4,119 S 142-40M L5,108265,51 K 507-803 N5,59 K 204-301 L5,28 K 1ER-001 N3,51 S 207-302 N5,134958,106083,242900,142572,197285,19 K 117-K00 L5,08 K 118-S00 S3,108279,05 K 132-S00 S3,154558,18 K 102-271 L5,51 S 106-006 N5,71 S 301-K00 N5,53 K 15R-005 N3,102969,201131,142586,56 K 107-106 N5,32 K 449-500 L5,179841,19 K 132-S00 D3,51 S 101-S00 N5,106066,186139,119 K 101-272 N5,56 S 105-015
WSMP® Coaxial Connectors and Cable Assemblies For High Density Applications up to 100 GHz
型号- L70-464-XXX,W1S24JA-40ML5,W1S15AA-40ML5,W1S15BA-40ML5,W1S15MA-40M/50,L70-463-XXX,W1S15KA-40ML5,W1K101A-270D3,W1S101A-5H0L5,L70-323-102,W1S122A-400L5,W1S20JA-40ML5,W1S20HA-40ML5,W1K10HA-K00D3,W1S14SA-40ML5,W1S101-S00D3,L70-462-XXX,W1S143A-40ML5,W1S15NA-40ML5,W1K10FA-K00D3,W1S15LA-40ML5,W1K10JA-K00D3,W1K10NA-K00D3,W1S103A-40ML5,W1W005-000,W1S109-K00S3,W1S141A-40ML5,W1S20MA-40ME4,W1S10SA-40ML5,W1S12KA-40ML5,L70-461-XXX,W1S109-S00S3,W1S12MA-40ML5,W1S12AA-40ML5,W1K203A-270D3,L70-469-XXX,W1S102-K00S3,W1S152A-400L5,W1S244A-40ML5,W1K109-K00D3,L70-460-XXX,W1K10PA-K00D3,W1S141A-270D3,W1S101A-270D3,L70-468-XXX,W1KF1W1A-K03D3,W1S15LA-40M/50,W1S204A-40ML5,W1S108-K00S3,W1K102-K00D3,L70-336-102,W1S15NA-40M/50,W1K101-K00D3,W1S10ZA-40ML5,W1K10GA-K00D3,W1S144A-40ML5,L70-467-XXX,W1W002-000,W1W001-000,W1S14PA-40ML5,W1K10CA-K00D3,W1S15MA-40ML5,L70-471-XXX,W1K108-K00D3,W1K10MA-K00D3,W1S541A-270D3,W1S14ZA-40ML5,W1S15KA-40M/50,W1S24HA-40ML5,W1S12NA-40ML5,W1S104A-40ML5,W1K10AA-K00D3,L70-465-XXX,W1S122-400L5,W1S152A-400/50,L70-466-XXX,W1S12LA-40ML5,W1S501A-270D3,W1S12BA-40ML5,L70-470-XXX
【元件】罗森伯格B2ca线缆树立全新防火安全标准,在机场、医院、酒店和托儿中心等场景发挥关键作用
在建筑项目中,安全性至关重要。ROSENBERGER的B2ca线缆为防火安全设定了新的行业标准,对安全问题毫不妥协。这些线缆不仅符合欧洲建筑产品标准EN 50575的严格要求,还在特殊防火安全性方面树立了新的标杆。
Non-Magnetic Connectivity Solutions MEDICAL & INDUSTRIES
型号- 28S147-102N5-NM,19K102-101L5-NM,L01-225-XXX,19K101-K00L5-NM,L01-224-XXX,L01-226-XXX,QLXS15R-002A4-NM,28K201-40ML5-NM,15Z202-1H1L5-NM,28S247-303N5-NM,QLXS101-302A5-NM,LE3-006-XXX-NM,99P159-150Z-NM,L01-223-XXX,MF1S111-199L5-NM,MF1S111-101L5-NM,19K101-272L5-NM,28K101-40M L5-NM,32S102-271L5-NM,32S107-301L5,19K107-271L5-NM,19K101-271L5-NM,M51S101-272N5-NM,19S641-271L5-NM,M53S101-272N5-NM,MF2C116-40ML5-NM,19K101-102L5-NM,MF2C117-40ML5-NM,28S247-302N5-NM,23S110-2H8L5-NM,32K101-270L5-NM,23S110-201L5-NM,19K202-271L5-NM,QLXS201-302A5-NM,QLXK202-400L5-NM,MF1K109-1H8L5-NM,QLXK101-400L5-NM,19K201-302L5-NM,15K101-40MB1-NM,15C102-40ML-NM,MF2C115-40ML5-NM,19K202-270L5-NM,32K101-400L5-NM,M60S101-273N1-NM,102060,28K102-400L5-NM,19S103-400L5-NM,MF1K109-101L5-NM,99C299-202E-NM,MF1K109-199L5-NM,32S101-270L5-NM,MF2C118-40ML5-NM,LH8-003-XXX,19S141-40ML5-NM,LH1-057-XXX-NM,MF1S111-1H8L5-NM,99C300-201E4-NM,LH1-071-XXX-NM,23K105-201L5-NM,28K101-102N5-NM,32K101-271L5-NM,19K202-301L5-NM,LH1-053-XXX-NM,32S101-3H1L5-NM,18S10Q-400L5-NM,99F1P1-201E4-NM,19S201-40ML5-NM,LH8-004-XXX,QLXK203-400A5-NM,19S101-40ML5-NM,19S202-40ML5-NM,18S101-40ML5-NM,23S107-201L5-NM,M29S101-271L5-NM,18K201-3H8L5-NM,28S147-103N5-NM,23K105-2H8L5-NM
Rosenberger(罗森伯格)多端口微型同轴电缆连接器和电缆组件 产品介绍
描述- Multiport Mini-Coax Connectors and Cable Assemblies for Board-to-Board Applications up to 20 GHz / 40 GHz
型号- 18K101-270 L5,23C11E-40ML5,23C21E-40ML5,23C14F-40ML5,23C12F-40ML5,23C21F-40ML5,23C14E-40ML5,23C12E-40ML5,03K123-S03S3,32K101-270 L5,03S123-S03S3,03K123-K03S3,23W101-000,03S123-K03S3,23C14G-40ML5,23C21D-40ML5,02S123-S00S3,23W100-000,23W100-001,32S201-270 L5,23C11F-40ML5,32S102-270 L5,02K123-K00S3,23C11G-40ML5,23C12G-40ML5,19K107-270 L5,23C21G-40ML5,23C12D-40ML5,23C14D-40ML5,23K15A-010E4,23C11D-40ML5,02S114-270 L5,23S15A-010E4
【产品】多端口微型同轴连接器和线缆组件,应用频率范围最高可达70GHz
罗森伯格提供广泛的多端口微型同轴连接器,用以满足日益提高的具有挑战性的半导体测试行业的要求,高密度封装的设计促进现代芯片测试的不断变革。产品主要包括PCB连接器和多通道电缆组件,把多个通道(2,4,6,8)集成在一起,可大大缩小在PCB上的安装空间,为整体产品设计提供方便 ,并使测试时间大大缩减。
【技术】基于三同轴法的EMC测试,以管中管法为例—信号传输部分
本文中举例为三同轴测试法中典型的管中管法,可解决其他测试方法中电缆转移阻抗被添加到连接器转移阻抗的问题。
WSMP® Coaxial Connectors and Cable Assemblies
型号- L70-464-XXX,W1S24JA-40ML5,W1S15AA-40ML5,W1S15BA-40ML5,W1S15MA-40M/50,L70-463-XXX,W1S15KA-40ML5,W1K101A-270D3,W1S101A-5H0L5,L70-323-102,W1S122A-400L5,W1S20JA-40ML5,W1S20HA-40ML5,W1S14SA-40ML5,W1K10HA-K00D3,W1S101-S00D3,L70-462-XXX,W1S143A-40ML5,W1S15NA-40ML5,W1K10FA-K00D3,W1S15LA-40ML5,W1K10JA-K00D3,W1K10NA-K00D3,W1S103A-40ML5,W1W005-000,W1S109-K00S3,W1S20MA-40ME4,W1S10SA-40ML5,W1S141A-40ML5,W1S12KA-40ML5,L70-461-XXX,W1S109-S00S3,W1S12MA-40ML5,W1S12AA-40ML5,W1K203A-270D3,L70-469-XXX,W1S102-K00S3,W1S152A-400L5,W1S244A-40ML5,W1K109-K00D3,L70-460-XXX,W1K10PA-K00D3,W1S141A-270D3,W1S101A-270D3,L70-468-XXX,W1KF1W1A-K03D3,W1S15LA-40M/50,W1S204A-40ML5,W1S108-K00S3,W1K102-K00D3,L70-336-102,W1S15NA-40M/50,W1K101-K00D3,W1S10ZA-40ML5,W1K10GA-K00D3,W1S144A-40ML5,L70-467-XXX,W1W002-000,W1W001-000,W1S14PA-40ML5,W1K10CA-K00D3,W1S15MA-40ML5,L70-471-XXX,W1K108-K00D3,W1K10MA-K00D3,W1S541A-270D3,W1S14ZA-40ML5,W1S15KA-40M/50,W1S24HA-40ML5,W1S12NA-40ML5,W1S104A-40ML5,W1K10AA-K00D3,L70-465-XXX,W1S152A-400/50,L70-466-XXX,W1S12LA-40ML5,W1S501A-270D3,W1S12BA-40ML5,L70-470-XXX
Rosenberger(罗森伯格)适用于高达100 GHz高密度应用的WSMP®同轴连接器和电缆组件选型指南
目录- Company & Product Introduction Standard WSMP® Connectors High-Speed WSMP® Connectors New Generation WSMP® Connectors New Generation WSMP® Alignment Covers Cable Assemblies New Generation High-Performance WSMP® Test Results WSMP® and New Generation WSMP®Product Evaluation Boards Accessories
型号- L70-464-XXX,W1S24JA-40ML5,W1S15AA-40ML5,W1S15BA-40ML5,W1S15MA-40M/50,L70-463-XXX,W1S15KA-40ML5,W1K101A-270D3,W1S101A-5H0L5,L70-323-102,W1S122A-400L5,W1S20HA-40ML5,W1S20JA-40ML5,W1K10HA-K00D3,W1S14SA-40ML5,W1S101-S00D3,L70-462-XXX,W1S143A-40ML5,W1S15NA-40ML5,W1K10FA-K00D3,W1S15LA-40ML5,W1K10JA-K00D3,W1K10NA-K00D3,W1S103A-40ML5,W1W005-000,W1S109-K00S3,W1S141A-40ML5,W1S10SA-40ML5,W1S20MA-40ME4,W1S12KA-40ML5,L70-461-XXX,W1S109-S00S3,W1S12MA-40ML5,W1S12AA-40ML5,W1K203A-270D3,L70-469-XXX,W1S102-K00S3,W1S152A-400L5,W1S244A-40ML5,W1K109-K00D3,L70-460-XXX,W1K10PA-K00D3,W1S141A-270D3,W1S101A-270D3,L70-468-XXX,W1KF1W1A-K03D3,W1S15LA-40M/50,W1S204A-40ML5,W1K102-K00D3,W1S108-K00S3,L70-336-102,W1S15NA-40M/50,W1K101-K00D3,W1S10ZA-40ML5,W1K10GA-K00D3,W1S144A-40ML5,L70-467-XXX,W1W002-000,W1W001-000,W1S14PA-40ML5,W1K10CA-K00D3,W1S15MA-40ML5,L70-471-XXX,W1K108-K00D3,W1K10MA-K00D3,W1S541A-270D3,W1S14ZA-40ML5,W1S15KA-40M/50,W1S24HA-40ML5,W1S12NA-40ML5,W1K10AA-K00D3,W1S104A-40ML5,L70-465-XXX,W1S152A-400/50,L70-466-XXX,W1S12LA-40ML5,W1S501A-270D3,W1S12BA-40ML5,L70-470-XXX
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可定制B-Flon极细同轴线导体规格:AWG36~48,特性阻抗:50±5Ω,工作温度:-40~90℃,静电容量:105-120PF/m,减衰量:10MHZ:0.5-2.6db/m;100MHZ:1.6-4.2db/m,阻燃UL:VW-1规格。
最小起订量: 50000m 提交需求>
可定制B-Flon高频同轴电缆的温度-40~105℃、尺寸长度,采用导体规格:AWG28~36,减衰量:1GHz-6GHz/1.4-8.5db/m,阻燃UL:VW-1规格。
最小起订量: 50000m 提交需求>
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