- 易迪拓培训,专注于微波、射频、天线设计工程师的培养
Help to design a 1GHz to 2GHz BPF using FR4 in ADS software
Any one know how to design.. i already simulate alot of pattern using ridge and stub . but can't get the desired result.
FR4 = bad for filters! Anisotropic, poor er control, which you need to make a bandpass filter. So UNLESS you are using only lumped elements soldered onto the board, use another type of board. FR4 would make poor, uncontrolled, transmission line resonators!
You can design this filter with a cascaded LC low pass and LC high pass. You can use FR4 as the PCB, but you cam also use any other low loss PCB, such as Rogers PCB.
You can use HPF+LPF structure. For example HFCN-800 and LFCN-2150 Minicircuits. This filter will be smaller than any other.
I think the better solution is a microstrip combline filter, but anyway FR4 is bad for filtering...
FR4 is not the best way to go but it will work (sort of).
There are various boards out there like RT Duroid / Arlon but they can be expensive
and difficult to work with for various reasons.
You don't say what you are using this filter for. So it is a little difficult to
give advice.
As a rough rule of thumb if the bandwidth is greater than +-12% of the center
frequency you are better off designing a low pass followed by a high pass.
You do however need to seriously consider termination as connecting any type
of filter to a double balanced mixer for instance effects the mixers performance.
I also agree! FR4 is not the best way !
FR4 is perfectly fine IF all the reactive components of the filter are lumped elements.
If the transmission line lenghts and widths are used as filtering elements, then FR4 is a poor choice of substrates.
Just when you think you know an answer...you find something new! Here is a guy using FR4 up to 6 Ghz:
Make a quick-turnaround PCB for RF parts - 2010-12-15 11:00:00 | EDN
I do not agree with that. FR4 is a lossy dielectric, so avoid building distributed capacitive elements. However, using metal traces as inductors works just fine on FR-4.
申明:网友回复良莠不齐,仅供参考。如需专业帮助,请学习易迪拓培训专家讲授的ADS视频培训课程。
上一篇:Problem in conversion from layout to schematic in ADS
下一篇:Need help in Agilent ADS 2009 Avago Design Kit
国内最全面、最专业的Agilent ADS培训课程,可以帮助您从零开始,全面系统学习ADS设计应用【More..】
- Agilent ADS教学培训课程套装
- 两周学会ADS2011、ADS2013视频教程
- ADS2012、ADS2013射频电路设计详解
- ADS高低阻抗线微带滤波器设计培训教程
- ADS混频器仿真分析实例视频培训课程
- ADS Momentum电磁仿真设计视频课程
- ADS射频电路与通信系统设计高级培训
- ADS Layout和电磁仿真设计培训视频
- ADS Workspace and Simulators Training Course
- ADS Circuit Simulation Training Course
- ADS Layout and EM Simulation Training Course
- Agilent ADS 内部原版培训教材合集