Title:
HIGH PASS FILTER AND METHOD OF FABRICATING SAME
Document Type and Number:
Japanese Patent JPS55117324
Kind Code:
A
Abstract:
There ist provided a high pass switched capacitor filter having low bandpass ripple. The present filter does not have peaking near its center frequency when sampled at switching frequencies used in communication systems. The high pass filter has three switched capacitor integrators (10, 25, 40) providing a 3-pole Chebyshev high pass switched capacitor filter. A fourth switched capacitor integrator (50) is used to provide an output for the filter. A method of implementing the high pass filter from a set of parameter requirements is also provided. The capacitors used in this filter are rations of each other and the filter readily lends itself to being implemented as a monolithic integrated circuit, paricularly as a CMOS circuit.
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Inventors:
HENRII URUZUBAAGU
Application Number:
JP1966280A
Publication Date:
September 09, 1980
Filing Date:
February 19, 1980
Export Citation:
Assignee:
MOTOROLA INC
International Classes:
H03H19/00; (IPC1-7): H03H19/00