V4.0

6 pole bandstop filter

I/O impedcance = 50.0 ohms
Center frequency = 9.3 MHZ
3 DB bandwidth = 0.0 MHZ

Circuit 1. Low Z on I/O for signals in stopband.

Part Values
PartButterworthChebyshev 0.1 DBBessel
L1397.89 uH277.70 uH1179 uH
C10.7313 pF1.05 pF0.2468 pF
L20.0037 uH0.0029 uH0.0018 uH
C279577 pF99865 pF163993 pF
L3397.89 uH277.70 uH180.58 uH
C30.7313 pF1.05 pF1.61 pF


Circuit 2. High Z on I/O for signals in stopband.


Part Values
PartButterworthChebyshev 0.1 DBBessel
L10.0018 uH0.0026 uH0.0006 uH
C1159155 pF111080 pF471710 pF
L2198.94 uH249.66 uH409.98 uH
C21.46 pF1.17 pF0.7098 pF
L30.0018 uH0.0026 uH0.0040 uH
C3159155 pF111080 pF72232 pF

 
Note:  Plots below are mathematical approximations, not circuit simulations and may not be 100% accurate 

 

Butterworth 6 pole Bandstop filter frequency vs loss plot
                                                                     MHz  DB loss
*                                                                   9.310    0.1
*                                                                   9.311    0.1
*                                                                   9.311    0.1
*                                                                   9.312    0.1
*                                                                   9.313    0.2
*                                                                   9.313    0.2
*                                                                   9.314    0.2
*                                                                   9.315    0.3
*                                                                   9.315    0.4
*                                                                   9.316    0.5
*                                                                   9.317    0.7
*                                                                   9.317    0.9
 *                                                                  9.318    1.2
 *                                                                  9.319    1.7
  *                                                                 9.319    2.2
   *                                                                9.320    3.0
   *                                                                9.321    4.0
     *                                                              9.321    5.3
      *                                                             9.322    6.8
        *                                                           9.323    8.7
          *                                                         9.323   10.9
             *                                                      9.324   13.5
                *                                                   9.325   16.5
                   *                                                9.325   19.9
                       *                                            9.326   23.9
                            *                                       9.327   28.6
                                  *                                 9.327   34.4
                                         *                          9.328   41.9
                                                    *               9.329   52.5
                                                                 *  9.329   70.6
                                                                 *  9.330  703.8
                                                                 *  9.331   70.6
                                                    *               9.331   52.5
                                         *                          9.332   42.0
                                  *                                 9.333   34.5
                            *                                       9.333   28.6
                       *                                            9.334   23.9
                   *                                                9.335   19.9
                *                                                   9.335   16.5
             *                                                      9.336   13.5
          *                                                         9.337   10.9
        *                                                           9.337    8.7
      *                                                             9.338    6.8
     *                                                              9.339    5.3
    *                                                               9.339    4.0
   *                                                                9.340    3.0
  *                                                                 9.341    2.3
 *                                                                  9.341    1.7
 *                                                                  9.342    1.3
*                                                                   9.343    0.9
*                                                                   9.343    0.7
*                                                                   9.344    0.5
*                                                                   9.345    0.4
*                                                                   9.345    0.3
*                                                                   9.346    0.3
*                                                                   9.347    0.2
*                                                                   9.347    0.2
*                                                                   9.348    0.1
*                                                                   9.349    0.1
*                                                                   9.349    0.1

Chebyshev 6 pole Bandstop filter frequency vs loss plot
                                                                     MHz  DB loss
*                                                                   9.310    0.1
*                                                                   9.311    0.0
*                                                                   9.311    0.0
*                                                                   9.312    0.0
*                                                                   9.313    0.0
*                                                                   9.313    0.0
*                                                                   9.314    0.0
*                                                                   9.315    0.0
*                                                                   9.315    0.0
*                                                                   9.316    0.1
*                                                                   9.317    0.2
*                                                                   9.317    0.4
*                                                                   9.318    0.7
 *                                                                  9.319    1.2
 *                                                                  9.319    2.0
   *                                                                9.320    3.0
    *                                                               9.321    4.5
      *                                                             9.321    6.3
        *                                                           9.322    8.4
          *                                                         9.323   10.8
             *                                                      9.323   13.5
                *                                                   9.324   16.4
                   *                                                9.325   19.8
                       *                                            9.325   23.5
                           *                                        9.326   27.7
                                *                                   9.327   32.6
                                      *                             9.327   38.6
                                              *                     9.328   46.2
                                                        *           9.329   56.8
                                                                 *  9.329   74.9
                                                                 *  9.330  708.2
                                                                 *  9.331   74.9
                                                        *           9.331   56.8
                                              *                     9.332   46.2
                                      *                             9.333   38.6
                                *                                   9.333   32.6
                           *                                        9.334   27.7
                       *                                            9.335   23.5
                   *                                                9.335   19.8
                *                                                   9.336   16.5
             *                                                      9.337   13.5
          *                                                         9.337   10.8
        *                                                           9.338    8.4
      *                                                             9.339    6.3
    *                                                               9.339    4.5
   *                                                                9.340    3.1
 *                                                                  9.341    2.0
 *                                                                  9.341    1.2
*                                                                   9.342    0.7
*                                                                   9.343    0.4
*                                                                   9.343    0.2
*                                                                   9.344    0.1
*                                                                   9.345    0.0
*                                                                   9.345    0.0
*                                                                   9.346    0.0
*                                                                   9.347    0.0
*                                                                   9.347    0.0
*                                                                   9.348    0.0
*                                                                   9.349    0.0
*                                                                   9.349    0.0

Bessel 6 pole Bandstop filter frequency vs loss plot
Note: Bessel approximation may not be accurate beyond 2x cutoff frequency
                                                                     MHz  DB loss
*                                                                   9.310    0.7
*                                                                   9.311    0.8
*                                                                   9.311    0.9
*                                                                   9.312    0.9
*                                                                   9.313    1.0
 *                                                                  9.313    1.1
 *                                                                  9.314    1.2
 *                                                                  9.315    1.3
 *                                                                  9.315    1.4
 *                                                                  9.316    1.5
 *                                                                  9.317    1.7
 *                                                                  9.317    1.9
  *                                                                 9.318    2.1
  *                                                                 9.319    2.3
  *                                                                 9.319    2.6
  *                                                                 9.320    3.0
   *                                                                9.321    3.4
   *                                                                9.321    4.0
    *                                                               9.322    4.7
     *                                                              9.323    5.6
      *                                                             9.323    6.7
        *                                                           9.324    8.3
          *                                                         9.325   10.5
             *                                                      9.325   13.8
                  *                                                 9.326   18.8
                           *                                        9.327   27.0
                                          *                         9.327   42.2
                                                                 *  9.328   75.0
                                                                 *  9.329  168.9
                                                                 *  9.329  675.5
                                                                 *  9.330865493890178183826767872.0
                                                                 *  9.331  675.6
                                                                 *  9.331  168.9
                                                                 *  9.332   75.1
                                          *                         9.333   42.2
                           *                                        9.333   27.0
                  *                                                 9.334   18.8
             *                                                      9.335   13.8
          *                                                         9.335   10.6
        *                                                           9.336    8.3
      *                                                             9.337    6.8
     *                                                              9.337    5.6
    *                                                               9.338    4.7
   *                                                                9.339    4.0
   *                                                                9.339    3.4
   *                                                                9.340    3.0
  *                                                                 9.341    2.6
  *                                                                 9.341    2.3
  *                                                                 9.342    2.1
 *                                                                  9.343    1.9
 *                                                                  9.343    1.7
 *                                                                  9.344    1.5
 *                                                                  9.345    1.4
 *                                                                  9.345    1.3
 *                                                                  9.346    1.2
 *                                                                  9.347    1.1
*                                                                   9.347    1.0
*                                                                   9.348    0.9
*                                                                   9.349    0.9
*                                                                   9.349    0.8