Unit cell based wavepath grid architecture applicable and to phased-array devices and enabling symmetrical output power distribution and single channel control

摘要

A waveguide pathway and a phased-array device utilizing the waveguide pathway are provided. The waveguide pathway comprises a two-dimensional array of homogeneous unit cells. Each unit cell includes a branch point leading to two waveguide branches. Each waveguide branch passes through a positive phase shift element and a negative phase shift element, in series, and with each waveguide branch passing through the two phase shift elements in opposite order relative to the other waveguide branch. Each unit cell additionally includes a convergence point where the two waveguide branches converge. The wavepath grid and the phased-array device are capable of producing output channels with linear, asymmetrical phase distribution but with symmetrical power distribution without employing amplifiers. The phased-array device can be tuned with single-channel or dual-channel control.

主权项

1. A linear phased-array device comprising:
a chip; a wavepath grid comprising a two-dimensional array of wavepath unit cells, each unit cell including;
a waveguide;a branch point in the waveguide, the branch point leading to first and second waveguide branches; anda convergence point of the first and second waveguide branches; wherein the first waveguide branch passes first through a positive phase shift element and subsequently through a negative phase shift element and the second waveguide branch passes first through a negative phase shift element and subsequently through a positive phase shift element; and a plurality of terminal outlets disposed within the wavepath grid and operable to outcouple individual sub-beams of a wave from the chip.