Transcription of RF Filter Design – Basic Filter Types
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RF Filter Design – Basic Filter Types
EEE 194RF_ L171RF Filter Design Basic Filter TypesEEE 194RF_ L172 Filter Attenuation ProfilesEEE 194RF_ L173RF Filter Parameters Insertion Loss: Ripple Bandwidth: BW 3dB= fu3dB fL3dB Shape Factor: Rejection()210101ininLPIL loglogP== minmaxAABWSFBW=EEE 194RF_ L174 Low-Pass FilterCascading four ABCD-networks.()10111011010111111 GLGGLLLABRRCDjCRRRjCRRRjCR = ++++ = + EEE 194RF_ L175RF Filter Parameters()10111011010111111 GLGGLLLABRRCDjCRRRjCRRRjCR = ++++ = + Cascading four 194RF_ L176 Low-Pass Filter Frequency Response Frequency Response from the ABCD Definitions: So the Transfer Functionis Simply:2120ivAv==()()111 GHAjRRC ==++EEE 194RF_ L177 Low-Pass Filter Frequency Response Corresponding Phase is: Group Delay:()gdtd =()(){}(){}1 ImHtanReH = EEE 194RF_ L178 High-Pass Filter ()10101111110101111111 GLGGLLLABRRCDRjLRRRRjLRjLR = ++++ = + EEE 194RF_ L179 High-Pass Filter Frequency Response Frequency Response from the ABCD Definitions.
EEE 194RF_ L17 3 RF Filter Parameters • Insertion Loss: • Ripple • Bandwidth: BW 3dB = f u 3dB – f L 3dB • Shape Factor: • Rejection 10in 101(2) in L P ILloglog P ==−−Γ
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