IP3 2025 – Wireless Circuits (Lot 16255)

This lot is generally related to a phase shifter that can be easily manufactured by forming air holes in the substrate of a Substrate Integrated Waveguide (SIW), which can be integrated with planar circuits to provide miniaturized and efficient RF or microwave systems. Disclosed is a phase shifter that uses an SIW structure consisting of a substrate and an integrated waveguide. The waveguide includes input and output ports, two parallel columns of via walls, and multiple non-metallic air holes. It is also disclosed that the air holes are designed to alter the phase of a signal traveling between the ports. Furthermore, the degree of phase shift is controlled by adjusting the diameter, spacing, and number of air holes, allowing for precise and customizable phase modulation without relying on metallic components within the air holes. The technology may be implemented in phased array antennas, radar systems, satellite communications, 5G wireless systems, other high-frequency applications, etc.