ENHANCED PHASE SHIFTER CIRCUIT TO REDUCE RF CABLES
First Claim
1. A multi-band antenna system, comprising:
- an array of wide-band radiating elements;
a multi-band electrical tilt circuit, comprising;
a plurality of combiners, each combiner having a combined port, a first RF band port, and a second RF band port, each combined port being coupled to a respective sub-array of the array of wide-band radiating elements;
a first RF band variable phase shifter having a first input and a first plurality of outputs that are connected to respective ones of the first RF band ports via respective ones of a first plurality of transmission lines; and
a second RF band variable phase shifter having a second input and a second plurality of outputs that are connected to respective ones of the second RF band ports via respective ones of a second plurality of transmission lines;
wherein the first RF band variable phase shifter is configurable independently from the second RF band variable phase shifter, andwherein fixed portions of the first and second phase shifters and at least some of the first plurality of transmission lines and at least some of the second plurality of transmission lines are implemented in a common medium.
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Accused Products
Abstract
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 RE 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.
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Citations
17 Claims
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1. A multi-band antenna system, comprising:
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an array of wide-band radiating elements; a multi-band electrical tilt circuit, comprising; a plurality of combiners, each combiner having a combined port, a first RF band port, and a second RF band port, each combined port being coupled to a respective sub-array of the array of wide-band radiating elements; a first RF band variable phase shifter having a first input and a first plurality of outputs that are connected to respective ones of the first RF band ports via respective ones of a first plurality of transmission lines; and a second RF band variable phase shifter having a second input and a second plurality of outputs that are connected to respective ones of the second RF band ports via respective ones of a second plurality of transmission lines; wherein the first RF band variable phase shifter is configurable independently from the second RF band variable phase shifter, and wherein fixed portions of the first and second phase shifters and at least some of the first plurality of transmission lines and at least some of the second plurality of transmission lines are implemented in a common medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A printed circuit board for a multi-band antenna system, the printed circuit board comprising:
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a plurality of first radio frequency (“
RF”
) transmission lines, at least some of the first RF transmission lines including first segments that extend along respective first arcs, where the first arcs are concentrically arranged about a first point;a plurality of second RF transmission lines, at least some of the second RF transmission lines including second segments that extend along respective second arcs, where the second arcs are concentrically arranged about a second point that is in a different location than the first point; a plurality of third RF transmission line segments that are constituent parts of a respective plurality of first combiners, wherein a first end of each first RF transmission line is connected to a first end of a respective one of the third RF transmission lines and a first end of each second RF transmission line is connected to a second end of a respective one of the third RF transmission lines, wherein the printed circuit board comprises a single printed circuit board. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification