【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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Knowles(楼氏电子)射频/微波产品选型指南

目录- Knowles Technology and Custom Design Overview    DLI Brand Devices and Available Product Listing    Technical Notes and Custom Configurations   

型号- FPC06302,H100XHXS,PDW08607,PDW08605,PDW08606,B076MB6S,L288XC3S,PDW07630,PDW08604,B148LA2S,B280LB0S,B280MD1S,FPC07643,L220XH5S,B056MB5S,B099NC4S,B191KA1S,B080MB5S,B061MB6S,PDW07069,B033ND5S,B168MB1S,DEB-B274MB1S,DEB-B385MDOS,B083LB6S,L204XF4S,PDR05848,B119LB1S,B065NC5S,B210LA0S,J30BLBA032LX1,B084MC6S,B20BLSBN01,N016MD9S,B012MD5S,J30BJBA002LX3,B052NC5S,C079KB1S,PDR06120,L157XG3S,B148QF0S,H140XHXS,FPC10207,B350NB2S,B105MB5S,B114MB1S,PDW06984,PDR06390,B056RC4S,C142KB0S,PDW09692,B047MC5S,B094LA2S,FPC06630,FPC06078,B032ND5S,B102MC1S,B285LB2S,FPC06077,FPC06076,PDW07948,B119MB1S,B115NB4S,B111NC4S,B230LA0S,L254XF3S,PDR06380,FPC06075,FPC06074,FPC06073,B042OD4S,B142LA2S,B060NC5S,B145LB1S,B380KA1S,B274MB1S,FPC06882,B032OD5S,FPC06881,J30BJBA032LX1,B180MA1S,PDW06407,PDW06089,PDW06400,PDW06401,B192NB2S,J30XXBA002LX3,H120XHXS,B100RH2W,B220LA0S,B280LA0S,B280MC1S,N012ME9S,B118LB4S,B291MB0S,B070MB6S,B121MB4S,B040RG9S,B070NC5S,B393KD0S,J30BLBA002LX3,B095MB1S,AFL09387,B057MC5S,B20BHSBN01,FPC07183,FPC07182,FPC07181,B120MB1S,FPC07180,B021MC8S,FPC06149,L128XH4S,FPC07234,B024RF2S,B100MC5S,FPC06701,FPC06700,DEB-B259MC1S,PDW08324,PDW08323,B031ND5S,B207LA0S,H080XHXS,B116NC5S,H168XHXS,B100MH0W,FPC06154,FPC06153,PDW06933,FPC07803,FPC07802,L065XG9W,L065XG9S,B138LA2S,B138MB1S,B190MB1S,FPC06152,FPC06151,B055NC5S,FPC06150,B200LA0S,PDW06011,J30XXBA012LX4,J30BJBA022LX2,B058MD7S,FPC06164,B28BJBFN01,PDW05758,B089NC4S,B028RF2S,B260MB2S,FPC06719,B150OG0S,PDW06041,B385MD0S,B062MC55,L050XF9S,B149MC1S,B289KA0S,PDW06398,PDW06399,PDW06038,B381KD0S,J30BLBA012LX4,B040MB5S,B112MB1S,B240LA0S,FPC09291,B259MC1S,H160XHXS,B161LA0S,B038MC9S,B081RC0S,B250LA0S,B280MF1S,L185XF4S,B096QC2S,FPC06913,B305LA0S,B424MB1S,L157XF3W,B120RF0W,L060XD9S,L095XG9S,B479KB0S,L185XF4W,B120RF0S,B039NC5S,FPC07337,ADP09388,B160KA1S,B279KB1S,J30BLBA022LX2,H182XHXS,B144MB1S,PDW07691,B038NC4S,L117XH4S,B097MB0S,L117XH4W,B050ND4S,H026XHXW,B016MD6S,B28BHBFN01,B28BTBFN01,B127MB2S,B165LA1S,J30BJBA012LX4,H060XHXS

选型指南  -  KNOWLES  - 2023/10/16 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。

原厂动态    发布时间 : 2023-02-07

【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

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。

原厂动态    发布时间 : 2023-04-19

C079KB1S 7.9 GHZ CAVITY BANDPASS FILTER

型号- C079KB1S,C079KB0S-T

数据手册  -  KNOWLES  - March 2022 PDF 英文 下载

【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

用户指南  -  KNOWLES  - Rev0  - 6/30/2022 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。

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