Patent ID: 9515363
Filing Date: 2016-12-06
CPC Classification: H01P

Claim Text:
1. A method for filtering signals on a dielectric waveguide, the method comprising: receiving a combined signal on the dielectric waveguide (DWG), wherein the combined signal comprises at least a first frequency signal with a first wavelength and a second frequency signal with a second wavelength; splitting the combined signal into a first portion and a second portion, wherein splitting the combined signal is performed using two curved DWG branches with similar curvature radius; delaying the first portion of the combined signal by an amount of delay time to form a delayed first portion; joining the delayed first portion with the received combined signal to form a filtered signal such that the first frequency signal is enhanced by constructive interference while the second frequency signal is diminished by destructive interference; and providing a portion of the filtered signal to a receiver, whereby the amplitude of the second frequency signal is attenuated in the filtered signal.