10 Threads found on edaboard.com: Design An Active Bandpass Filter
This isn't actually an active bandpass, rather a passive LC filter followed by a gain stage, which simplifies calculations.
Obviously you got the resonance frequency wrong, but that's no the only design problem. You should face the fact that it's almost impossible to achieve the intended Q of 400 for 6.8 MHz (...)
Analog Circuit Design :: 12-01-2014 22:17 :: FvM :: Replies: 4 :: Views: 1188
TI have a pretty good filter design tool you can download freely, I think some other vendors have similar tools
Elementary Electronic Questions :: 10-09-2011 00:18 :: Old Nick :: Replies: 2 :: Views: 1153
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 (...)
Analog Circuit Design :: 02-05-2012 14:00 :: Milad-D :: Replies: 4 :: Views: 1822
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 :: 12-29-2010 08:42 :: volker_muehlhaus :: Replies: 8 :: Views: 1047
I would suggest an analog filter. Look at TI filter Pro. active filter design Application - filterPRO - TI Software Folder .
Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-21-2010 08:21 :: keith1200rs :: Replies: 9 :: Views: 1412
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 :: 08-17-2010 14:05 :: crisandr :: Replies: 0 :: Views: 728
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 :: 04-06-2010 22:28 :: BigBoss :: Replies: 8 :: Views: 2235
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 :: 02-08-2010 07:15 :: LvW :: Replies: 4 :: Views: 1330
For this frequency range you can build an active bandpass filter based on opamps.
You will need two filters connected in series: lowpass and highpass.
I hope you have a calculator, so here is the design and formulas:
FR4 uses up to 8 layers, but I think can do it on 1
Professional Hardware and Electronics Design :: 06-16-2005 12:14 :: IanP :: Replies: 1 :: Views: 1816
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 :: 09-15-2003 09:56 :: leonqin :: Replies: 4 :: Views: 3861