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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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 AirplanesAndRockets.com

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Filter Prototype Denormalization

The following table gives equation and schematic transforms necessary to convert normalized lowpass filter prototype values (1 rad/sec cutoff, 1 Ω source & load impedance).

RF Cafe - Filter prototype denormalization equation lowpass prototype

Lowpass Prototype - Capacitor Input

 

R = source/load resistance in Ω

CProto, LProto = prototype lowpass capacitor or
                            inductor value, respectively

C, L = denormalized capacitor or inductor value,
            respectively

FUpper & FLower = upper and lower cutoff
                                 frequencies, respectively, in Hz

Final C and L values will be in farads (F) and
henries (H), respectively

RF Cafe - Filter prototype denormalization equation lowpass prototype

Lowpass Prototype - Inductor Input

Type Transform Equation Transform Schematic
Lowpass RF Cafe - Filter prototype denormalization equation lowpass prototype inductor 1 RF Cafe - Filter prototype denormalization equation lowpass prototype inductor 2
RF Cafe - Filter prototype denormalization equation lowpass prototype inductor 4  RF Cafe - Filter prototype denormalization equation lowpass prototype inductor 3
RF Cafe - Filter prototype denormalization equation lowpass prototype capacitor 1 RF Cafe - Filter prototype denormalization equation lowpass prototype capacitor 2    RF Cafe - Filter prototype denormalization equation lowpass prototype capacitor 3
 
Highpass RF Cafe - Filter prototype denormalization equation highpass prototype inductor 4 RF Cafe - Filter prototype denormalization equation highpass prototype inductor 5  RF Cafe - Filter prototype denormalization equation highpass prototype inductor 7  RF Cafe - Filter prototype denormalization equation highpass prototype inductor 6
RF Cafe - Filter prototype denormalization equation highpass prototype capacitor 4 RF Cafe - Filter prototype denormalization equation highpass prototype capacitor 5
RF Cafe - Filter prototype denormalization equation highpass prototype capacitor 7  RF Cafe - Filter prototype denormalization equation highpass prototype capacitor 6
Bandpass RF Cafe - Filter prototype denormalization equation bandpass prototype parallel capacitor inductor 1 RF Cafe - Filter prototype denormalization equation bandpass prototype parallel capacitor inductor 2 RF Cafe - Filter prototype denormalization equation bandpass prototype parallel capacitor inductor 3  RF Cafe - Filter prototype denormalization equation bandpass prototype parallel capacitor inductor 5  RF Cafe - Filter prototype denormalization equation bandpass prototype parallel capacitor inductor 4
RF Cafe - Filter prototype denormalization equation bandpass prototype series capacitor inductor 1 RF Cafe - Filter prototype denormalization equation bandpass prototype series capacitor inductor 2 RF Cafe - Filter prototype denormalization equation bandpass prototype series capacitor inductor 3
RF Cafe - Filter prototype denormalization equation bandpass prototype series capacitor inductor 5  RF Cafe - Filter prototype denormalization equation bandpass prototype series capacitor inductor 4
 
Bandstop RF Cafe - Filter prototype denormalization equation bandstop prototype series capacitor inductor 1 RF Cafe - Filter prototype denormalization equation bandstop prototype series capacitor inductor RF Cafe - Filter prototype denormalization equation bandstop prototype series capacitor inductor 2  RF Cafe - Filter prototype denormalization equation bandstop prototype parallel capacitor inductor 8  RF Cafe - Filter prototype denormalization equation bandstop prototype series capacitor inductor 3
RF Cafe - Filter prototype denormalization equation bandstop prototype parallel capacitor inductor 4 RF Cafe - Filter prototype denormalization equation bandstop prototype parallel capacitor inductor 5 RF Cafe - Filter prototype denormalization equation bandstop prototype parallel capacitor inductor 6
  RF Cafe - Filter prototype denormalization equation bandstop prototype parallel capacitor inductor 7
Related Pages on RF Cafe
- Filter Transfer Functions
- Filter Equivalent Noise Bandwidth
- Filter Prototype Denormalization
- Filter Design Resources
- Bessel Filter Poles
- Bessel Filter Prototype Element Values
- Butterworth Lowpass Filter Poles
- Butterworth Filter Prototype Element Values
- Chebyshev Lowpass Filter Poles
- Chebyshev Filter Prototype Element Values
- Monolithic Ceramic Block Combline Bandpass
  Filters Design
- Coupled Microstrip Filters: Simple Methodologies for
  Improved Characteristics