RECONFIGURABLE BRANCH LINE COUPLER

摘要

A reconfigurable branch line coupler and methods of designing and reconfiguring the branch line coupler are disclosed. The reconfigurable branch line coupler includes a plurality of transmission lines, each of which comprises a phase shifter. The reconfigurable branch line coupler further includes an input port, which is split into two quadrature signals providing a second and third port between adjacent of the plurality of transmission lines, with a fourth port isolated from the input port at a center frequency.

主权项

1. A reconfigurable branch line coupler, comprising:
a plurality of transmission lines, each of which comprises a phase shifter; and an input port, which is split into two quadrature signals providing a second and third port between adjacent of the plurality of transmission lines, with a fourth port isolated from the input port at a center frequency; wherein the phase shifters have controllable inductance and controllable capacitance, and structured to vary a phase shift without significantly affecting an original total characteristic impedance of the plurality of transmission lines.