Physical Optics Corporation

Daniel Mark Bock

Alireza Shapoury

Tomasz P Jannson

Andrew A Kostrzewski

Nathanael Keehoon Kim

Thomas Nielsen

Davis Tran

Systems and methods are provided for tunable band pass filtering for Tunable RF Anti-Jamming Systems. A tunable notch filter includes a transmission line coupled to an antenna, a splitter, a band-stop filter, a polarity inverter, and a combiner. In operation, the band-stop filter suppresses predetermined frequency bands of a received signal creating a filtered signal, the polarity inverter creates an inverted signal, and the combiner combines the filtered and inverted signals to create a pass band including the predetermined frequency bands and suppressing frequency bands adjacent the predetermined frequency bands. Alternatively, a tunable multiband bandpass filter includes first and second bandpass filters and a plurality of tunable passive components adapted to tune the first and second bandpass filters to first and second frequency bands, thereby creating a multiband pass band signal including the first and second frequency bands and attenuating frequency bands adjacent to the first and second frequency bands.

Tunable RF anti-jamming system (TRAJS)

A tunable notch filter, comprises a transmission line coupled to an antenna; a plurality of ring resonators inductively coupled to the transmission line, wherein each ring resonator of the plurality of ring resonators is grounded and comprises a variable microelectromechanical systems (MEMS) capacitor; wherein a set of variable MEMS capacitors of the plurality of variable MEMS capacitors are independently tunable to vary a notch location and a notch width of the tunable notch filter; and wherein a set of ring resonators of the plurality of ring resonators further comprises an attenuator configured to reduce power reflected from the antenna.

Tunable notch filter including ring resonators having a MEMS capacitor and an attenuator

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Los Angeles, CA, United States of America

Daniel Mark Bock