Programmable filter bank having notch filter and bandpass filter

Details Programmable filter bank having notch filter and bandpass filter Programmable filter bank having notch filter and bandpass filter

1998-08-14

2000-10-10

Lee, Benny

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333175, H03H 701

Patent

active

061305901

ABSTRACT:
An inexpensive to produce and small profile programmable filter bank with a high quality factor that applies an adjustable frequency response to an input signal to produce a filtered output signal. In a preferred embodiment, the programmable filter bank includes an input for receiving the input signal, an output for transmitting the filtered output signal and a set of interconnected individually selectable filter elements, where each filter element provides a predefined fixed frequency response. A control unit, such as a digital state machine or a microprocessor is connected to the filter elements and enables a user to select one or more filter elements in order to generate a desired overall frequency response, for application to the input signal, that is formed of the combination of the frequency responses of the selected filter element(s).

REFERENCES:
patent: 3671889 (1972-06-01), Favors
patent: 3855556 (1974-12-01), Hartmann
patent: 4763089 (1988-08-01), Pon
patent: 4970479 (1990-11-01), Landt et al.
patent: 5428814 (1995-06-01), Mort et al.
patent: 5515017 (1996-05-01), Yamada et al.

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