【技术】Knowles带您一文读懂微带滤波器

2023-03-10 Knowles楼氏电容微信公众号
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楼氏电容(KPD)自2020年收购Integrated Microwave Corporation(IMC)以来,进一步拓展了射频和微波滤波解决方案相关产品系列,含从VHF到Ka波段的各类陶瓷同轴谐振器集总参数滤波器以及腔体滤波器。在此期间,楼氏电容还就最受市场欢迎的滤波器类型之一——微带滤波器进行了持续创新,并拓展了相关产品系列。



一些读者或许对微带技术还不甚熟悉——它问世于1952年,并随着介电材料制造和薄膜加工技术的进步,被越来越广泛地应用于各类应用中——尤其是在毫米波频率应用上。


微带技术的工作原理概述

如图1所示,从专业的角度来说,微带指的是一种平面传输线技术,其中,导电带与接地层之间以电介质基板隔开。


图1. 典型微带滤波器结构图


具体说来,微带滤波器的设计与构造类似于印刷电路板(PCB)上的电路配置方式。二者的关键区别在于,在微带滤波器中,固体电介质基板上的金属导电带是作谐振器之用,而不仅仅只是互连而已。固体电介质绝缘层之上是金属导电带,其下是金属接地层。导电带周围的电场渗透到两种不同的介质中——部分电场渗透到基板中,另一部分则渗透到导电带上方的空气中。介质基板的介电常数越高,会导致越多的电场集中于基板之中——这意味着介质材料的选择是电场损失的一个重要因素。标准的PCB材料如FR4可用于1GHz以下的低Q值滤波器。选择陶瓷作为介质材料可实现更低的损耗、获取更高的Q值。


该类型的印刷传输线是一种较为常见的滤波应用选择,它可覆盖广泛的频率范围,产生更高的经济效益,并且通常比波导等替代传输线技术更轻、更紧凑。

授权代理商:世强先进(深圳)科技股份有限公司
技术资料,数据手册,3D模型库,原理图,PCB封装文件,选型指南来源平台:世强硬创平台www.sekorm.com
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概念,方案,设计,选型,BOM优化,FAE技术支持,样品,加工定制,测试,量产供应服务提供:世强硬创平台www.sekorm.com
集成电路,电子元件,电子材料,电气自动化,电机,仪器全品类供应:世强硬创平台www.sekorm.com
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Knowles(楼氏电子)单层电容器(SLC)选型指南

目录- Precision Devices Introduction    Simplified Frequency & Product Application Chart    SINGLE LAYER CAPACITORS DLI    SINGLE LAYER CAPACITORS COMPEX    SUBSTRATES & HEATSINKS DLI    BROADBAND DEVICES DLI    RF COMPONENTS DLI   

型号- V30BZ102M6S,P42BNL820MA03152,CSB SERIES,F15NR0R1M1PX3,D10CFOR1A5PX,CSA SERIES,V30BZ222M8SX,P62BNL820MA02636,AEQ3042,C-BN,C06BL851X-1UN-X0T,P42NR2R0K5S,AEQ2199,AEQ2234,V30BZ103M1SX,C-28,C-BE,C-BD,P62CG1R0C5S,C-20,P21BNL300MA03976,BAR CAP®,P42CG1R5C5S,V30BZ472M1SX,S20AG250DZNX,F20CG0R1M1PX3,C-140,GAP CAP®,AEQ3055,C-37,CR6-BN-105X25X4-5-G-101-Z,C-35,C-30,P21BNL300MA04678,C08BL242X-5UN-X0T,J30XXBA012LX4,C18BL103X-4UN-X0T,J30BJBA022LX2,F15CGR08M5PX3,AEQ2050,V30BZ472M1S,P62CD0R7B5S,B28BJBFN01,CSM-BE-10X10-X5-G-2R9-M,J30BLBA032LX1,AEQ05510,C06BL,DR03F36Q1550AYB,P42BNL820M5S,B20BLSBN01,V30BZ102M6SX,C-40,SBT-28-20X20X6-G-S5,CR SERIES,T30BV30X45PX,C-120,J30BJBA002LX3,BINARY CAP®,CSM SERIES,AEQ05470,AEQ06042,AEQ05471,F35CG0R4M1PX3,CSB-100-50X20X7-10-G-120-M,AEQ05472,C-400,MST,C-58,AEQ05467,AEQ05468,C-55,AEQ05469,C-50,J30BLBA012LX4,V SERIES,E40BU151Z1PX4,PX42UX104KCSX,BORDER CAP®,DI-CAP®,P62NV100M5S,F25NR0R4M1PX3,C-NR,P62BNL820M5S,V30BZ102M5SX,CSA-200-10X10X6-G-101-M,OPTI-CAP®,C-100,MILLI-CAP®,D10BJ100K1EX,PX SERIES,F35CF0R1M1PX3,PX42UX104KCZX,BINARY-CAP®,MST-30-25X20X6-G-S5,V30BZ682M1S,AEQ05246,C18BL,F25CG0R2M1PX3,SBT SERIES,V30BZ682M1SX,V80BZ104M5SX,BI-CAP®,V30BZ103M1S,P62CF0R5B5S,C04BL121X-5UN-X0T,F25CFR08M5PX3,J30BJBA032LX1,V80BZ104M5S,F20NR0R2M1PX3,J30BLBA022LX2,AMPLIFIER BYPASS SAMPLE KIT,P21BNL300M5S,CSA,MST SERIES,C08BL,CSB,P21BNL300MA04282,J30XXBA002LX3,C04BL,CSM,CM SERIES,C-80,BAR-CAP®,SBT,T-CAP®,G10BU100K5PX05,F40NR0R5M1PX4,J30BLBA002LX3,C-200,P42BNL820MA04679,ENG DESIGN KIT SLC,V30BZ222M8S,H20CG250DZNX,C08BL102X-1UN-X0T,B20BHSBN01,B28BHBFN01,B28BTBFN01,J30BJBA012LX4,P21BNL300MA04733

选型指南  -  KNOWLES  - R/7.2  - 2023/8/19 PDF 英文 下载

Knowles使用稳定的高Q值陶瓷来开发体积小、选择性高的陶瓷腔体低损耗带通滤波器

Knowles使用稳定的高Q值陶瓷来开发体积小、选择性高的陶瓷腔体低损耗带通滤波器。典型陶瓷腔体滤波器比使用波导技术设计的滤波器小30倍。通过多端口实现,Knowles可以创建一个非常小、稳定的滤波器,具有宽阻带性能,没有杂散模式。

厂牌及品类    发布时间 : 2023-02-07

楼氏电容开发的薄膜微带技术,可解决微带滤波器的损耗问题

与其他传输线或波导滤波方案相比,微带滤波器最大的问题在于损耗。随着高K值系列材料(如楼氏电容的PG、CF和CG陶瓷材料等)拓展,如今已能够开发出低损耗的微带传输线滤波器,例如楼氏电容表贴式带通滤波器B099NC4S。

厂牌及品类    发布时间 : 2023-04-19

【技术】使用Knowles的CG材料和薄膜微带线技术,滤波器尺寸可减少20倍,具有-55°C至125°C的温度稳定性

Knowles所有的微带滤波器都具有以下主要优势:-55°C至125°C的温度稳定性;与典型PWB相比,使用Knowles的CG材料,滤波器尺寸减少了20倍,使用CF减少了10倍,使用PG减少了3倍;高可重复性,因为薄膜制造提供精确的制造性能而无需调谐。

新技术    发布时间 : 2023-03-15

Ceramic Resonators

型号- DR03F36Q1550AYB

数据手册  -  KNOWLES  - 2022/10/19 PDF 英文 下载

【经验】解析平面滤波器工作频率正在扩展到毫米波范围

微带滤波器自1952年以来一直在做同样的事情。它们仍然是工程师工具包中最重要的滤波器类型,通过使用各种介电基板材料和设计技术,微带滤波器得到了增强。Smiths Interconnect本文解析平面滤波器工作频率正在扩展到毫米波范围。

设计经验    发布时间 : 2022-02-25

C079KB1S 7.9 GHZ CAVITY BANDPASS FILTER

型号- C079KB1S,C079KB0S-T

数据手册  -  KNOWLES  - March 2022 PDF 英文 下载

数据手册  -  KNOWLES  - March 2022 PDF 英文 下载

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射频无源器件定制

可定制射频隔离器/环行器(10M-40GHz),双工器/三工器(30MHz/850MHz-20GHz),滤波器(DC-20GHz),功分器,同轴负载,同轴衰减器等射频器件;可定制频率覆盖DC~110GHz,功率最高20KW。

最小起订量: 1 提交需求>

车规级电感定制

可定制电感可承受4.5KV高压,可适配于30MHz高频应用;支持平共模电感、谐振电感、PFC电感、大电流直流电感等产品电压/频率等参数性能定制;通过AECQ-200认证。

最小起订量: 100000 提交需求>

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