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272 Threads found on edaboard.com: Design Bandpass Filter
Keep your lines as short as you can, or include them in your design. The 3nH inductor LP3 is very sensitive to extra length in that path. I would implement that as a piece of line (a few mm will give 3nH). Do not forget that the via to ground is also part of that inductor. Another important aspect are the parasitics in your SMD elements. From
I'm on a project to design a bandpass Gm-C filter and one of the requirement spec is Total Harmonic Distortion less than 50dB with two tone input signals at 1v peak-to-peak. As far as I know, transconductor usually has large input and output impedance. Small voltage change at the input will generate a small current change and this current at (...)
I wonder know how to design a high pass filter from a low pass filter??? I know that a bandpass filter with central frequency Vθ can be designed from a low pass filter with a passband from 0-Vc, it is equal to the length from -Vc/2 to Vc/2, to convolute with a sine (...)
Hello,everyone. I want to design a W-band E-plane waveguide bandpass filter, I adopt HFSS and CST to analyze the filter with the same structure parameter, but the results show great difference, they are totally different. The attachment is the projects of HFSS and CST. Can anyone give me some advice? Thank (...)
Hi, Does anyone know how to design the input buffer for the active inductor bandpass filter circuit? It is mentioned in some literature that we directly connect input signal into the gate of a transistor, and it will convert the voltage into current. My questions are: 1) do I need to put impedance matching at the gate, isn't the (...)
u can use ifilter in AWR to design a hairpin. ifilter can be opened in wizard branch in project tab in AWR. you can see the help about ifilter. First you select filter type(BPF,LPF……), then select filter realization type(Microstrip, stripline……). see attached pic
Hi Maryam, At first you should specify the order of filter ( How much rejection, do you need in certain offset from center frequency? by knowing that, the order of filter can be found). Also there are several types of filters such as butter worth, chebyshev and etc. Each type has certain properties. By assuming that you have found (...)
i wanna design 5 element chebyshev bandpass filter for cellular network but i dont know what the value of the passband ripple should i that 0.2dB or 0.5dB or else..please help me..i need some explanation with the chosen answer..
hello all.. i have project a tittle "design bandpass filter design using planar couple lines" by using ADS software in 9GHz center frequency...but i still blur how to start design my project..can anyone help me....:roll:
I have recently started using ADS2003, and as a part of my work have been asked to design a edge coupled bandpass filter for following specifications: pass band : 11.1 to 11.4 insertion loss 0.5 db stop band : appx 3.4 db away from 11.4 while designing the filter the physical parameters for lamda by 4 (...)
I have recently started using ADS2003, and as a part of my work have been asked to design a edge coupled bandpass filter for following specifications: pass band : 11.1 to 11.4 insertion loss 0.5 db stop band : appx 3.4 db away from 11.4 while designing the filter the physical parameters for lamda by 4 (...)
hi... i'm new to this software, cst microwave design, so i really need help regarding this software. i need to design a microstrip hairpin + stripline bandpass filter for UWB application. can any of you recommend a tutorial or lab sheet or books that i can download it as my references?.
what does fr4substrate means? which material does belong to fr4
hey guys, I need seriously help to design low pass couple line filter. i already reffered ludwig,pozar,chris bowick and i got information about coupleline bandpass and stop...but not about couple line low pass filter... plz help me out ....its urgent.....thanks in advance i am using IE3D 12.30 can u help in theoretical (...)
There are several alternatives - mostly based on multi-amplifier biquad (state variable) design. One simple method is given in the pdf attachement. bandpass: Vin,1=Vin,3=0 (grounded) and Vout/Vin,2=bandpass response. But note that the output requires a buffer amplifier (with voltage output). Note also: The given circuit is of 2nd order. (...)
hi...can anybody tell me which type of filter design recently used for bluetooth?i've been searching this thing but still dont get it..help me plz... and if i decided to fabricate parallel coupled line what is the advantage of it compared to hairpin filter?
Are you talking about a lumped element or distributed circuit on a board, or an IC design?
1GHz bandpass with 10MHz BW is a challenge, and now you want to tune it? 8O I think that you should consider YIG filters or re-design your system arechitecture. YIG filter example data:
hello, If there is time to experiment, you can make such filters from scrap FR4 copper glad material. You use the FR4 material for making the housing. The resonators you can make from metal strip also. Such materials are easy to machine with hand tools. Without access to a VNA or equivalent setup, design on your own is very time consuming and r
Hello guys , I'm working on a tubular bandpass filter . However it doens't seems that easy to find the right information about how to design such a filter . I would like to build the bandpass filter mechanically with high Z and low Z coaxial stubs (stepped impedance) . I succeed (...)