Enhanced phase shifter circuit to reduce RF cables

摘要

A multi-band antenna system includes an array of wide-band radiating elements and a multi-band electrical tilt circuit. The multi-band electrical tilt circuit includes a plurality of combiners, a first RF band variable phase shifter and a second RF band variable phase shifter implemented in a common medium. The common medium may comprise a PCB, a stripline circuit, or the like. Each combiner includes a combined port, a first RF band port, and a second RF band port. The combined ports are coupled to the radiating elements. The first RF band phase shifter has a first plurality of variably phase shifted ports connected to the first RF band ports of the combiners via transmission line, and the second RF band phase shifter has a second plurality of variably phase-shifted ports connected to the second RF band ports of the combiners via transmission line. The phase shifters are independently configurable.

主权项

1. A multi-band antenna system, comprising:
an array of wide-band radiating elements; a multi-band electrical tilt circuit implemented in a common medium, comprising:
a plurality of combiners, each combiner having a combined port, a first RF band port, and a second RF band port, the combined ports of the combiners being coupled to the array of wide-band radiating elements;a first RF band variable phase shifter having a first plurality of variably phase shifted ports connected to the first RF band ports of the plurality of combiners via a first plurality of transmission lines; anda second RF band variable phase shifter having a second plurality of variably phase-shifted ports connected to the second RF band ports of the plurality of combiners via a second plurality of transmission lines; wherein said first RF band variable phase shifter is configurable independently from said second RF band variable phase shifter.