Stub type bandpass filter

Details Stub type bandpass filter Stub type bandpass filter

H - Electricity

01

P

333/71

H01P 1/203 (2006.01) H01P 1/205 (2006.01) H01P 1/207 (2006.01) H01P 1/212 (2006.01)

Patent

CA 1199693

ABSTRACT A bandpass filter comprises a line interconnecting input and output terminals. Three stubs are connected to the line at three different locations at a spacing which is 1/8 the wavelength of the centre frequency of the passband. Each stub is grounded at one end and open at the other and each stub has a total length which is 1/4 the wavelength of the centre frequency. The two outer stubs are connected to the line at a position on the stubs which is 1/6 the wavelength from the grounded end. The middle stub may be connected to the line at a position on the stub which is either 1/4 the wavelength of the centre frequency or 1/8 the wavelength of the centre frequency. The filter operates to provide greater rejection of waves double or treble the passband .

419987

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