23 Threads found on edaboard.com: Design An Active Bandpass Filter
i wanna design a bandpassfilter on a FR4 pcb 1.6mm
thickness.The range is between 70Hz and 30kHz.Cutoff frequency at 200Hz and 10kHz.
Pls advise me what type of capacitor to be used as listed below:
Is there any strict rules to make a good design during layout a PCB?
Professional Hardware and Electronics Design :: 16.06.2005 05:01 :: KP :: Replies: 1 :: Views: 1311
I want to design a bandpassfilter that is used for IR_Detector, the frequency is 36Khz-40Khz and the output signal is always active low when the signal passes and active high when no signal. Does any one give me the schematic or documentation....?
Thanks and best regards
Analog Circuit Design :: 20.06.2005 07:09 :: WinterInJuly :: Replies: 3 :: Views: 431
TI have a pretty good filter design tool you can download freely, I think some other vendors have similar tools
Electronic Elementary Questions :: 08.10.2011 20:18 :: Old Nick :: Replies: 2 :: Views: 705
you should use OP to construct a active bandpass filter,
the pcb may has negligible effect on your filter.
I wanna design a bandpassfilter on a FR4 pcb 1.6mm
thickness.The range is between 70Hz and 30kHz.Cutoff frequency at 200Hz and 10kHz. (...)
PCB Routing Schematic Layout software and Simulation :: 26.06.2005 06:14 :: power-twq :: Replies: 3 :: Views: 966
Try filter Solutions.
about filter Solutions :
filter Solutions is a comprehensive PC based filter synthesis and analysis software package. filter Solutions provides passive and active circuit synthesis and modification analysis with parasitic effects, and digital (...)
Analog Circuit Design :: 21.05.2006 07:41 :: memarian :: Replies: 2 :: Views: 1164
I have to simulate the noise performances (with Spectre) of an active bandpass filter working up to 1.5 GHz. It's 50ohm input/output matched and what I do not understand is which noise analysis I must use. First, I used Noise analysis in Cadence and during the design I noticed clear noise improvement by choosing the right (...)
RF, Microwave, Antennas and Optics :: 17.08.2010 10:05 :: crisandr :: Replies: 0 :: Views: 397
It's very uncommon to use an active band pass filter with a Q as low as 0.5 because you can realize it with a passive network.
However, it should be possible with the MFB topology.
If you have problems in finding the part values, use a filter design program (available via internet).
Analog Circuit Design :: 08.02.2010 02:15 :: LvW :: Replies: 4 :: Views: 913
At those frequencies, a Chebycheff or Cauer type bandpass filter within an amplifer will be very proper.You can change the capacitor values by switching CMOS transistors that are digitally controlled.For more information, see active filter design methodologies.For inductances, you can use bonding wires and (...)
RF, Microwave, Antennas and Optics :: 06.04.2010 18:28 :: BigBoss :: Replies: 8 :: Views: 1617
You can use OpAmp to design a filter, use ADS to simulate it.
Why use ADS to simulate an active filter in the kHz range?
There is a lot of free synthesis software for active filters, for example filterPro from Texas Instruments or filterlab from
RF, Microwave, Antennas and Optics :: 29.12.2010 03:42 :: volker_muehlhaus :: Replies: 8 :: Views: 681
Would you please explain more about active BPF design.
I want to design a 160MHz filter with 10MHz bandwidth.
Analog Circuit Design :: 05.02.2012 08:39 :: maryamtele :: Replies: 4 :: Views: 1044
i have a question about designing a bandpass filter.
how can i design a bandpass filter in range of 1Mhz to 100Mhz ?
what should i do at first?
thank you in advance
Electronic Elementary Questions :: 15.06.2012 04:28 :: GrandFather1984 :: Replies: 5 :: Views: 341
It contains :
卷 PROGRAM 的文件夹 PATH 列表
卷序列号码为 0006FE80 9580:5E40
+-active bandpass filters_files
+-antenna pre-selector filters_files
+-band pass filters_files
+-Circuit Sage filter (...)
Hobby Circuits and Small Projects Problems :: 15.09.2003 05:56 :: leonqin :: Replies: 4 :: Views: 3175
hello friends...i'm beginner in this forum....i from Malaysia....anybody can help me to design 1.5Ghz microstrip antenna for GPS receiver...plz email me at firstname.lastname@example.org....thanx
RF, Microwave, Antennas and Optics :: 10.12.2003 21:47 :: nyamook :: Replies: 5 :: Views: 1740
When designing band pass filter you must satisfy few criteries. First you must define 3dB pass band or ripple. Second, bandwidth where you define wanted attenuation. Third, chose filter type Butterworth, Chebyshew etc. filter in your case 1k-8k can be passive or active what is easier to realize.
RF, Microwave, Antennas and Optics :: 19.02.2005 02:59 :: Borber :: Replies: 6 :: Views: 1344
i am designing an active high pass filter. suppose the cut off of the filter is 100kHz, the non-ideal opamp poles is making it like a bandpass. How to make it a perfect high pass. Is it possible?
Analog Circuit Design :: 17.04.2006 07:10 :: krishmaniac :: Replies: 2 :: Views: 1150
Anyone know how design a bandpass filter with freq=19.44M, and bandwidth=10MHz with the discrete circuit? Pls help. Many thanks.
Analog Circuit Design :: 11.10.2006 12:14 :: hayhay :: Replies: 5 :: Views: 691
Without experiences in designing DRO´s, I tried to develop some DRO-circuits with 2 different BJT´s (BFP405, NESG2120M05) in common emitter and series-feedback without success. The only simulation-tool I have is the freeware of ansoft designer without the possibility to simulate active devices.
To learn the functionality of a DR, the (...)
RF, Microwave, Antennas and Optics :: 01.04.2009 03:59 :: zoomade :: Replies: 1 :: Views: 1285
This give me a very big filter that can't be realized with analog design. I never see a big filter before an ADC so what kind of filter can I need ?
Something like a 7th order elliptic filter can fulfill the specification. These filters can be realized, either active or (...)
Analog Circuit Design :: 21.08.2010 05:09 :: FvM :: Replies: 5 :: Views: 1731
whic IC selecet for design 12-16 kHz bandpass filter_? have you any idea_?
i have found some IC
2-)MF8 4th-Order Switched Capacitor bandpass filter
or you can advice...
Analog IC Design and Layout :: 21.10.2010 04:15 :: zulkarneyn :: Replies: 9 :: Views: 865
My aim is to use the intrinsic capacitances of the Mosfet Cgs to interact with the simulated inductance. At some point higher up the frequency, the circuit L and Cgs will resonate.
"At some point"......OK, but don't you intend to design (that means: to choose) the resonant frequency? Don't forget, your active ind
RF, Microwave, Antennas and Optics :: 03.08.2011 03:35 :: LvW :: Replies: 6 :: Views: 1380
The authors describe how triple-output
OTAs facilitate the development of a new
current-mode universal biquad configuration
capable of generating various filter transfer
functions using digitally programmable zeros.
This is achieved without excessive use of active
devices and without changing the biquad
topology. The biquad zeros
Analog IC Design and Layout :: 14.10.2006 00:18 :: benever :: Replies: 0 :: Views: 671
I want a technique through which i can completly isloate the Ac signal which isnt effected by the Dc reduction value.
What do you mean with "isolate" ? Is it your task only to REMOVE the ac signal from the decreasing DC voltage or to extract it for further processing ?
As a first guess I
Analog Circuit Design :: 18.10.2008 07:48 :: LvW :: Replies: 8 :: Views: 2092
Of course, some phase margin problems can be expected for each active filter as soon as the designed pole Q is relatively high. For example, consider an equal-component S&K low pass filter with a design value of Qp=10.
In this case, the non-inv. gain is G=3-1/10=+2.9. That means you are very close to the (...)
Analog Circuit Design :: 25.10.2010 03:20 :: LvW :: Replies: 2 :: Views: 1089