Filters with order enhancement
US8810308B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Feb 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/126
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A filter is provided. The filter receives an input signal and generates an output signal according to the input signal. The filter includes an input network, a high-pass network, and an operational circuit. The first input network provides a first normal path for the input signal to generate a first normal signal. The first high-pass network provides a first high-pass path for the input signal to generate a first high-pass signal. The operational circuit has first and second input terminals. The polarity of the second input terminal is inverse to that of the first input terminal. The operational circuit receives the first normal signal by the first input terminal and the first high-pass signal by the second input terminal such that a subtraction operation is performed on the first normal signal and the first high-pass filter to accomplish a low-pass filtering operation for generating the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.