Invention Grant
- Patent Title: Finite impulse response filter for producing outputs having different phases
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Application No.: US15019445Application Date: 2016-02-09
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Publication No.: US09940415B2Publication Date: 2018-04-10
- Inventor: A. Martin Mallinson , Hu Jing Yao , Dustin Forman
- Applicant: ESS Technology, Inc.
- Applicant Address: US CA Milpitas
- Assignee: ESS Technology, Inc.
- Current Assignee: ESS Technology, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Gard & Kaslow LLP
- Main IPC: G06F17/50
- IPC: G06F17/50 ; H03H15/02 ; H03K5/15 ; H03K5/1536

Abstract:
A method and system for designing and implementing a finite impulse response (FIR) filter to create a plurality of output signals, each output signal having the same frequency but at a different phase shift from the other output(s), is described. Values are determined for the resistors, or other elements having impedance values, in a FIR filter having a plurality of outputs, such that each output has the same frequency response but a different phase than the other output(s). This is accomplished by the inclusion of a phase factor in the time domain calculation of the resistor values that does not change the response in the frequency domain. The phase shift is constant and independent of the frequency of the output signal.
Public/Granted literature
- US20160154914A1 Finite Impulse Response Filter For Producing Outputs Having Different Phases Public/Granted day:2016-06-02
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