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146 Threads found on edaboard.com: **Filter Equations**

Convenient collection of engineering **equations**, conversions and references. Math tables, standard resistor values, periodic table, SAE & metric bolts, solder types, **filter** **equations**, coax cable specifications and many more. Over 150 windows. Uploaded by Kirt Blattenberger, the copyright owner.

RF, Microwave, Antennas and Optics :: 17.09.2001 07:22 :: Robin Hood :: Replies: **0** :: Views: **1828**

hai i need your help in my project i.e disease detection using gabor **filter** .
i dont know any thing about gabor **filter**.
initially i want to know what know what are input of gabor **filter** ,**equations** and code .
so, please help.

PLD, SPLD, GAL, CPLD, FPGA Design :: 12.12.2012 00:55 :: gsomesh :: Replies: **2** :: Views: **452**

hallo,
I have a problem with max281 IC; this is a 5th order bessel **filter** IC.
I find values of R an C (input signal of IC) for a 10 Hz **filter**.
and for a 100 hz **filter**?
and the CLOCK frequency?
Thanks.
Andrea.
ps. excuse me for my poor english! :oops:

Other Design :: 25.01.2003 14:07 :: femtoman :: Replies: **2** :: Views: **1709**

is a free online waveguide **filter** designer.

RF, Microwave, Antennas and Optics :: 05.02.2003 14:04 :: flatulent :: Replies: **3** :: Views: **1390**

Do you have any idea of how to make transmission zero? I reallize the best way is using CQ **filter** to make TZ, but in papers, most authors list the useless **equations** to realize correct **filter** pattern. Is there anyone have experiences in it? Please share me that. Thanks.

Other Design :: 17.02.2003 08:03 :: tungchang :: Replies: **0** :: Views: **1027**

what is CQ **filter**?

RF, Microwave, Antennas and Optics :: 18.02.2003 16:24 :: u_f_o :: Replies: **3** :: Views: **1353**

I have a RFIC for handphone. There is a PLL **filter** exteral to chip. how
can i caculate this **filter** , such as bandwidth , etc. Is there some reference
for it. THKS in advance.

RF, Microwave, Antennas and Optics :: 02.07.2003 19:58 :: brian39 :: Replies: **11** :: Views: **2422**

this one shows the use of wienner **filter**ing in image processing:
As you know matlab provides complete m files, easy to use and ready.
Also this one is interesting:
Also you know that there is a famous book Adaptive **filter**ing, which is a fam

Digital Signal Processing :: 04.09.2004 12:21 :: mami_hacky :: Replies: **5** :: Views: **2395**

How could I get an arc 2D for exciting with wave port a ustrip **filter** with a circular sustract?
Thanks for all and Regards.

Electromagnetic Design and Simulation :: 03.11.2004 14:05 :: sandruska :: Replies: **2** :: Views: **618**

hi, gentlemen. i am designing a 8th-order lowpass cheby1 **filter** for my first career, i've got the transfer function(i call this function one) after approximation and denormalization based on the specification. i wanna choose the Gm-c type for my realization and i am looking for some proper topology for that. could u tell me how to get the coefficie

Analog Circuit Design :: 23.11.2004 08:33 :: neo :: Replies: **1** :: Views: **801**

Hi
I am designing c cupled Chebyshev bandpass **filter** using **equations** in Hunter's book. by simulating this **filter** using MWoffice
I found that this **filter** is very sensitive for element variation
How can i reduse this sensitivity?
Many Thanks

RF, Microwave, Antennas and Optics :: 21.02.2005 14:09 :: rf100 :: Replies: **0** :: Views: **436**

Most books about **filter**s or about transmission lines written prior to 1960 will have this as one of the chapters. Also, general handbooks on radio in this time period will have information.
If you have any specific questions I can help.

Electronic Elementary Questions :: 13.03.2005 14:12 :: flatulent :: Replies: **9** :: Views: **2927**

is a discussion of this **filter**. It appears to be an ad hoc type.
From the graphs and the use, a parabolic **filter** would also work. It has the fastest rise time without overshoot for a given noise bandwidth. There is a graphical method (in the S plane) to obtain the pole locations whi

Analog Circuit Design :: 28.03.2005 16:57 :: flatulent :: Replies: **3** :: Views: **976**

Hi all,
I would to measure the S parameters of a saw **filter**. Its input is single and its output is balanced. Is it possible to measure it without using balun. Any materials??Thanks for your help.
RFCMOS

RF, Microwave, Antennas and Optics :: 18.05.2005 16:15 :: RFCMOS :: Replies: **3** :: Views: **785**

HI all
I have one question about the Kalman **filter**. I have found on some books, in the eqution of state space, the component of vector input is alway assumed equal zero. My question is if the input vector is not equal zero, what is the influence on the **equations** of Kalman **filter**. My math level is not well, so that I do not make the proof (...)

Digital Signal Processing :: 22.06.2005 10:46 :: muoinhohn :: Replies: **2** :: Views: **1259**

Hi there,
I've grasped the idea of an ordinary Kalman **filter** and created a program that tracks a noisy signal. However when it comes to modifying the program to an EKF I'm at a total loss. I've spent weeks reading up on this and searching for examples, but I'm still unable to figure how to calculate the modified **equations**
(especially the J

Mathematics and Physics :: 27.06.2005 07:00 :: Ultimâ :: Replies: **2** :: Views: **1301**

according to my experiances, i find curveletes more and more effective than gabor **filter**s
if your image content is curves such as fingerprints you can enhance is very effective with curvelets

Digital Signal Processing :: 28.09.2006 14:27 :: ali :: Replies: **33** :: Views: **26259**

I'm interested in the advantages and disadvantages of the analog "leapfrog" **filter** architecture. Any references, design **equations**, sensitivity analyses, etc would be helpful.
Thanks,
Kral

Analog Circuit Design :: 20.10.2005 17:34 :: Kral :: Replies: **0** :: Views: **812**

Someone can show how can i calculate the transfer function of the attached **filter** circuit (transfer function in frequence domain H(ω))
tks

Mathematics and Physics :: 03.11.2005 20:04 :: Highlander-SP :: Replies: **5** :: Views: **916**

what governs the dimensions of the aperatures between the resonators in a combline and where are the **equations**

RF, Microwave, Antennas and Optics :: 30.11.2005 17:42 :: wicked :: Replies: **0** :: Views: **510**

Hello, information here could be helpful:
Calculation gives R~10KOHm and C~several nF
These are reasonable for board level implementation.

Analog Circuit Design :: 09.03.2006 09:27 :: jcpu :: Replies: **6** :: Views: **1196**

Hi all,
Can someone help me with this design question, i have worked out the steps to do the problem.
Can someone help me scanned through it and see if i missed out anything.
Qn) what should be the reasonable value which i should choose for 'fp in "step 2"?
steps:
1) Required to find the prototype lowpass cutoff frequency for 'f

Digital Signal Processing :: 26.03.2006 00:58 :: scdoro :: Replies: **5** :: Views: **770**

how to obtain discrete time state **equations** for kalman **filter**

Digital Signal Processing :: 16.04.2006 12:59 :: PMW :: Replies: **0** :: Views: **646**

Hi:
It is stated in oppeheim's book that, if we know the exact location of "r" alternations, and we decided the number of taps of the **filter**, then we can settle the coefficients of the **filter** by solving linear **equations**.
My question is that how we know the exact locations of those alternations?
thanks,
Neoflash

Digital Signal Processing :: 14.05.2006 10:30 :: neoflash :: Replies: **1** :: Views: **589**

I want to resample an audio file from 44.1khz to 48kHz , and I will use a fractional delay **filter** , who can tell me how to design a fractional delay **filter** of farrow structure , an example will be a great help.

Digital Signal Processing :: 10.07.2006 06:35 :: leofy :: Replies: **2** :: Views: **3558**

i have down the sourcecode of a digital pll,which is a second order pll with a pi loop **filter**, but ,there are some puzzle
ta =sqrt(2)/2;
theta =2*pi*1/100;
Kp = ;
Ki = ;
d_phi_1 = 1/20;
n_data = 100;
why
Kp = ;
Ki = [(4*t

Digital communication :: 18.09.2006 11:16 :: mydreamhouse :: Replies: **0** :: Views: **672**

All analog continious time **filter**s have a transfert function that can be written as N(s)/D(s)
where N(s) the numerator is a polynome of degree n
D(s) the denominator is a polynome of degree p
s the laplace variable
and real **filter** have p > or = n
in reality a fiter is defined by a differential equation betweet input and output ( due to kirsch

Analog Circuit Design :: 26.09.2006 00:55 :: timo67 :: Replies: **7** :: Views: **2082**

Hi,
I need to design a OTA bandpass **filter**. I derive 2 **equations** but got 4 unknowns....
fc1 = sqrt(kn(w/L)Io1)/(2*pi*C1)
fc2 = sqrt(kn(W/L)Io2)/(2*pi*C2)
where fc1 is 4250Hz and fc2 is 17000Hz. Unknown Io1, Io2, C1 and C2.
Can give me some advise on how to do it.... Thanks in advance.
I am attaching a schematic diagram of the circui

Analog Circuit Design :: 05.10.2006 00:04 :: Potomoto :: Replies: **6** :: Views: **1451**

Nischal,
Step 1:
Determine the (s-domain) transfer function of the desired **filter**.
.
Step 2:
Determine the (s-domain) transfer function of the circuit (active or passive) that you want to use.
.
Step 3:
Equate like powers of s in both transfer functions. You will have n simultaneous **equations** for an n-pole **filter**.
.
Step 4:
Solve (...)

Electronic Elementary Questions :: 08.12.2006 16:07 :: Kral :: Replies: **2** :: Views: **1125**

Use ADS or Genesys for **filter** design

RF, Microwave, Antennas and Optics :: 02.03.2007 10:11 :: ADS_RFMW :: Replies: **2** :: Views: **679**

Hi.
I need to use a lag-lead **filter**. The configuration of this **filter** can be seen on page 8 of the following datasheet: (on the top right hand corner).
I need to work out the values for C1, C2 and R2 if the cut off frequency is 1kHz. What **equations** can i use? OR What would the values for C1, C2 and

Analog Circuit Design :: 16.03.2007 06:46 :: elec_eng :: Replies: **0** :: Views: **1141**

In the kalman **filter**,how does one define the matrices .such as R(n) is said as covarince of the nosie vector.OF what size should this be and do u determine the element values of the matrix.Can anyone pls help in the implementing the **equations** of the kalaman **filter**.I have the input vector and the state vector with me,I am not sure how to (...)

Digital Signal Processing :: 22.03.2007 06:51 :: deepa :: Replies: **2** :: Views: **980**

First you should try to make a program using the **equations** given in
any **filter** book. If this does not work them try looking on Matlabs
"File Exchange page". You can find it here.

Digital communication :: 26.03.2007 12:47 :: Element_115 :: Replies: **2** :: Views: **1897**

one of analog **filter** technic is state equation that can be implemented using opamp, but you must transform tour equation into state space equation i think

Analog IC Design and Layout :: 24.04.2007 04:59 :: e_eja :: Replies: **15** :: Views: **8005**

Hi All,
i want to design a PLL,now i have met with some problems.i'd like to use an active **filter**,but don't know how to caculate the **filter**'s parameters.can u help me?thanks a lot!

Analog Circuit Design :: 28.05.2007 13:29 :: Amy Wu :: Replies: **3** :: Views: **584**

I want to simulate a PLL and the loop **filter** parameters need to be calculated automatically according to bandwidth and phase margin. The loop **filter** is a 3rd order passive loop **filter**. The attached is a good tool to calculate the loop **filter**. But I need to do calculation in my program. So does anyone know the (...)

Analog Circuit Design :: 14.08.2007 02:21 :: hmsheng :: Replies: **2** :: Views: **3491**

andrew257,
"Practical Analog and Digital **filter** Design" by Les Thede contains **equations** for determining **filter** order and Gains for the Butterworth and other **filter** types.
Regards,
Kral

Analog Circuit Design :: 06.01.2008 17:35 :: Kral :: Replies: **1** :: Views: **984**

HELLO,ALL
INTER DIGITAL SUSPENDED SUBSTRATE BAND PASS **filter** DESIGN CONCEPTS(EQATIONS ,PRACTICAL CONSIDARATIONS)
GIVE ONE EXAMPLE OF THE BPF IN TERM OF **equations** AND HOW TO SIMULATED IN ADS(PLEASE SEND ADS SIMULATED LAY OUT AND RESULTS)
BPF SPECIFICATIONS: 1) PASS BAND:5.4GHz-

RF, Microwave, Antennas and Optics :: 21.01.2008 11:59 :: ravisankar :: Replies: **2** :: Views: **895**

hi, i want to design a bandpass **filter** with round rods can any body help me to by sending design **equations** completely.
thanks in advance

Linux Software :: 29.03.2008 00:51 :: mallelauma :: Replies: **0** :: Views: **783**

hi
i need design of interdigital **filter** with round rods. i have one paper from this site only but the **equations** for capacitor values are not there. can any body give me the whole design **equations** for this **filter** plz.
thanks

RF, Microwave, Antennas and Optics :: 29.03.2008 03:07 :: mallelauma :: Replies: **0** :: Views: **530**

hi,
i want to design a bandpass **filter** with round rods, plz any body help me, by sending design **equations** completely.
thanks in advance

RF, Microwave, Antennas and Optics :: 31.03.2008 00:03 :: mallelauma :: Replies: **2** :: Views: **1450**

hi all,
i want to design interdigital **filter** with microstrip withn design **equations** any 1 help me .and suggest any good book for the microwave **filter** design using microstrip or round rods.
thanks to all

RF, Microwave, Antennas and Optics :: 03.04.2008 07:03 :: mallelauma :: Replies: **3** :: Views: **2387**

hi
im sorry so much of matter is missed here , i want to know the relation between coupling band width and coupling coefficient in combline **filter** design which mentioned in thsis article i got this from the forum ift seems but i couldn,t understand how to calculate ke, cfe,cg,ze,zo values
and also i calculated the k(i.j) valu

RF, Microwave, Antennas and Optics :: 12.04.2008 00:14 :: mallelauma :: Replies: **1** :: Views: **577**

Generally, you can tune the **filter** in the S parameter, otherwise you can use shorted_circuit tunning techque and reflected group delay tuning techqiue.

RF, Microwave, Antennas and Optics :: 19.05.2008 08:36 :: james cook :: Replies: **16** :: Views: **2124**

hi to all
i have a doubt that, whether resonator length is the main factor for the **filter** tuning in interdigital **filter**, but it only depends on the frequency and wavelength , then by only tuning this length how can we adjust the all the factors related to **filter**?
thank you
i want o know more about this any suggested book for r

RF, Microwave, Antennas and Optics :: 23.05.2008 06:57 :: citizen :: Replies: **2** :: Views: **898**

I want to know that Is IIR **filter** is always non causal. if not than please send me an example of IIR **filter** in difference equation that is causal.
Please think about
y(n) = y(n-1) + x(n-1) + 2*x(n)
Is the above system is causal or non causal?
Is the system is IIR or not ?

Digital Signal Processing :: 02.07.2008 09:36 :: bhq :: Replies: **3** :: Views: **1967**

Hello,
I am designing a 5 pole combline **filter**. The problem I have been facing is that whenever I simulate a combline **filter** of order more than 3, the S11 response always shows lesser no of resonances and hence getting the required bandwidth and ripple levels is very hard. I tried to use both peter martin's **equations** and also the eigen (...)

RF, Microwave, Antennas and Optics :: 15.08.2008 02:46 :: kashyapastron :: Replies: **4** :: Views: **716**

Hello,
Can any person tell me the definition of the Ladder **filter**?
Thanks.

Analog Circuit Design :: 08.10.2008 06:09 :: M.B. :: Replies: **3** :: Views: **940**

hi :
I want design a charge pump pll. But the process (SOI CMOS) does't provide
resistor device. So , any one can give suggestion on the design of resistor-less **filter** and bias ckt of cp pll ?

Analog Circuit Design :: 09.06.2009 13:24 :: xihuwang :: Replies: **1** :: Views: **760**

how to calculate the parameters of square open loop resonator.plz specify the **equations**.

RF, Microwave, Antennas and Optics :: 29.06.2009 02:48 :: umair67 :: Replies: **0** :: Views: **477**

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