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FREQUENCY

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FREQUENCY

Bollen

FREQUENCY

BAND filter

Bandwith decibell power

And voldage gain

Boode Amplitude Diagram

(BAD)

Boode Phase Diagram

(BPD)

Frequency unitis

and terminilogy

20 db/decade 6 db/octaaf

High pass

High pass model

Roll off high pass

Low pass

Low pass model

Roll off low pass

BAND pass

How many corner frequencies?

Emitter capacitance

AGENDA

Bollen

Xc = 1/jwC

Xl = jwL

Frequency !!!!!

Bollen

BAD;BodeAmplitudeDiagramBPD;BodePhaseDiagram

BAND filter

Bollen

Bandwith, decibell power and voltage gain

Bollen

BAD

BAD; Bode Amplitude Diagramuse the asymtotic line alwaysat 1 decade distance the real line is the aymptotic line

Bollen

BPD

BPD; Bode Phase Diagramuse the asymtotic line alwaysat 1 decade distance the real line is the aymptotic line

Bollen

Frequency units and terminology

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20 db/decade or 6 db/octave

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High pass filterLow corner frequency- 3dB point

High pass

Bollen

High pass

Bollen

High pass

Bollen

Bollen

High pass model

Bollen

High pass model

Bollen

High pass model

Bollen

High pass

Bollen

Roll off high pass

Bollen

Low pass filterHigh corner frequency- 3dB point

Low pass

Bollen

Low pass

Bollen

Low pass

Bollen

Bollen

Bollen

Low pass model input

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Low pass model output

Bollen

Roll off low pass

Bollen

BAND pass

Bollen

How many corner frequencies ?

Bollen

Emitter capacitance increase Au

2 corner frequencies; starting Ce and ending Ce

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Total Au

1 differentiating effect @ (re // Re) C1 integrating effect @ Re C

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BAD of Ce

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Emitter capacitance

Bollen

Calculate-3dB pointsHow many corner frequencies?Draw the BAD

Emitter capacitance example

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Emitter capacitance

Bollen

Emitter capacitance

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Emitter capacitance

Bollen