Spiral wound, series fed, array antenna
First Claim
Patent Images
1. A phased array antenna comprising:
- a circuit board;
a balanced, series fed antenna array formed from a plurality of antenna elements positioned in at least two spiral antenna arms on the circuit board and having a signal feedpoint and two feed starts for a signal feedpoint positioned at a center portion of the spiral antenna arms for series feeding the antenna array and conducting any transmitted or received signals to aid in breaking up frequency scan effects and improve grating lobe suppression.
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Abstract
A phased array antenna includes a circuit board and a balanced, series fed antenna array formed from a plurality of antenna elements positioned in at least two spiral antenna arms on the circuit board. At least one signal feed point is positioned at a center portion of the spiral antenna arms for series feeding the antenna array and conducting transmitted and received signals and breaking up frequency scan and grating lobes.
28 Citations
26 Claims
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1. A phased array antenna comprising:
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a circuit board;
a balanced, series fed antenna array formed from a plurality of antenna elements positioned in at least two spiral antenna arms on the circuit board and having a signal feedpoint and two feed starts for a signal feedpoint positioned at a center portion of the spiral antenna arms for series feeding the antenna array and conducting any transmitted or received signals to aid in breaking up frequency scan effects and improve grating lobe suppression. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A phased array antenna comprising:
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a circuit board;
a plurality of antenna elements arranged on the circuit board as two linear, series fed antenna arranged in four spiral antenna arms as balanced, series fed antenna arrays having dual feed points for four feed starts, each feed point having two feed starts, at a center portion of the spiral arms, wherein said antenna elements are positioned in spiral arms that are formed as respective 0, 90, 180 and 270 degree spiral arms for conducting any transmitted or received signals to aid in breaking up frequency scan effects and improve grating lobe suppression. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A phased array antenna comprising:
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a multilayer circuit board;
a balanced, series fed antenna array formed from a plurality of antenna elements positioned in at least two spiral antenna arms on the multilayer circuit board and having a signal feedpoint and two feed starts for a signal feedpoint positioned at a center portion of the spiral antenna arms for series feeding the antenna array; and
electronic circuitry supported by said multilayer circuit board and operatively connected to said antenna elements for amplifying, phase shifting and beam forming any transmitted or received signals to aid in breaking up frequency scan effects and improve grating lobe suppression. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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- 21. A phased array antenna comprising a balanced, series fed antenna array formed from a plurality of antenna elements positioned in at least two spiral antenna arms and having a signal feedpoint and two feed starts for a signal feedpoint positioned at a center portion of the spiral antenna arms for series feeding the antenna array and conducting any transmitted or received signals to aid in breaking up frequency scan effects and improve grating lobe suppression.
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25. A method of forming a phased array antenna comprising the steps of:
positioning a plurality of antenna elements on a circuit board in at least two spiral antenna arms and having a signal feedpoint and two feed starts for a signal feedpoint positioned at a center portion of the spiral antenna arms for series feeding the antenna array and conducting any transmitted or received signals to aid in breaking up frequency scan effects and improve rating lobe suppression.
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26. A method according to claim 26, and further comprising the step of forming the circuit board as a multilayer circuit board containing interconnects and electronic components.
Specification