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US 6,650,290 B1Granted
Broadband, low loss, modular feed for phased array antennas
AssigneeLucent Technologies Inc.
InventorsLi-Chung Chang, Norman Gerard Ziesse
Life of this patent
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Abstract
In the modular feed for a phased array antenna, the advantages of a series-type feed and a corporate-type feed are combined to increase the system efficiency and the operating bandwidth of the modular feed. Feed modules having a stage of power bifurcation are used to feed array modules having a general series-type feed configuration. The array modules may be interchangeable, and the feed modules may be interchangeable, which decreases production costs and system complexity.
Claims30
A feed for an antenna comprising:
- a first power divider having an input line and first and second output lines;
- a second power divider having an input line, connected to the first output line of the first power divider, and at least two output lines;
- a third power divider having an input line, connected to the second output line of the first power divider, and at least two output lines;
- and
- four array feeds, each array feed being connected to one of the output lines of the second and third power dividers, each array feed including,
- an array feed line, and
- at least two radiating element feed lines connected to the array feed line, each of the radiating element feed lines for feeding a radiating element;
- wherein, for each of said second and third power dividers, a first output line includes at least one different component type than a second output line so as to make said second and third power dividers symmetric, and
- wherein a layout of said third power divider is arranged as a mirror image of a layout of said second power divider.
6 more elements
A feed for an antenna comprising:
- a first power divider having an input line and first and second output lines;
- a second power divider having an input line, connected to the first output line of the first power divider, and at least two output lines;
- a third power divider having an input line, connected to the second output line of the first power divider, and at least two output lines;
- and
- four array feeds, each array feed being connected to one of the output lines of the second and third power dividers, each array feed including,
- an array feed line, and
- at least two radiating element feed lines connected to the array feed line, each of the radiating element feed lines for feeding a radiating element;
- wherein a phase shifter for shifting the phase of signals in one of the output lines of the second power divider shifts the phase of a signal by nΔø, where n is the number of radiating element feed lines in an array feed, and Δø is a phase shift angle.
5 more elements
A modular feed for an antenna comprising:
- a plurality of feed modules, each feed module having an input line, a non-phase-shifted output line, and at least one phase-shifted output line;
- and
- a plurality of array modules, each array module being connected to one of the output lines of one of the feed modules, each array module including,
- an array feed line, and
- a plurality of radiating element feed lines connected to the array feed line;
- wherein components in each of the array modules are arranged symmetrically;
- and
- wherein the array modules are symmetrically interchangeable.
5 more elements
A modular feed for an antenna comprising:
- a plurality of feed modules, each feed module having an input line and at least two output lines;
- and
- a plurality of array modules, each array module being connected to one of the output lines of one of the feed modules, each array module including,
- an array feed line, and
- a plurality of radiating element feed lines connected to the array feed line;
- wherein each feed module includes a non-phase-shifted output line and at least one phase-shifted output line.
3 more elements
Dependencies are inferred from the claim text.