METHODS, SYSTEMS, AND NON-TRANSITORY COMPUTER READABLE MEDIA FOR WIDEBAND FREQUENCY AND BANDWIDTH TUNABLE FILTERING

摘要

Methods, systems, and computer readable media for wideband frequency and bandwidth tunable filtering are disclosed. According to one aspect, the subject matter described herein includes a wideband frequency and bandwidth tunable filter that splits a filter input signal into first and second input signals, modifies the first input signal to produce a first output signal, modifies the second input signal to produce a second output signal having an intermediate frequency response, and combines the first and second output signals while adjusting their relative phases and/or amplitudes to produce a filter output signal with the target frequency response. Adjustment includes splitting the second input signal into third and fourth input signals, which are modified and then combined to produce the second output signal having the intermediate frequency response.

主权项

1. A method for wideband frequency and bandwidth tunable filtering, the method comprising:
receiving an input signal for which wideband frequency and bandwidth tunable filtering is desired; creating a second input signal having at least one of a desired phase, amplitude, and delay relative to the first input signal; modifying the second input signal to create a modified second input signal having a desired frequency spectrum, wherein creating the modified second input signal having the desired frequency spectrum includes creating a third input signal having at least one of a desired phase, amplitude, and delay relative to the second input signal, modifying the third input signal to produce a fourth input signal, and combining the second input signal and the fourth input signal to create the modified second input signal having the desired frequency spectrum; adjusting at least one of phase, delay, amplitude magnitude, amplitude sign, and frequency spectrum of the modified second input signal with respect to the first input signal; and combining the modified second input signal with the first input signal to create an output signal having the desired frequency response.