Phase control network for active phased array antennas
First Claim
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1. A phase control block for combining signals from a phased array antenna comprising:
- a phase shifter;
a plurality of phase switches connected to the phase shifter having a first state wherein the plurality of phase switches forms a non-phase shifted signal from a first signal and a phase shifted signal from a second signal at the phase shifter and a second state wherein the plurality of phase switches forms a non-phase shifted signal from the second signal and a phase shifted signal from the first signal at the phase shifter; and
a signal summing device connected to the phase shifter and the plurality of phase switches for generating a summed output signal that is the sum of the non-phase shifted signal and the phase shifted signal.
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Abstract
A phase control block for combining signals from a phased array antenna includes a phase shifter for generating a phase shifted signal; a phase switch connected to the phase shifter having a first state wherein the phase switch connects a first signal to a switched signal output and a second signal to the phase shifter; and a signal summing device connected to the phase shifter for generating an output that is a sum of the switched signal output and the phase shifted signal.
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Citations
22 Claims
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1. A phase control block for combining signals from a phased array antenna comprising:
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a phase shifter;
a plurality of phase switches connected to the phase shifter having a first state wherein the plurality of phase switches forms a non-phase shifted signal from a first signal and a phase shifted signal from a second signal at the phase shifter and a second state wherein the plurality of phase switches forms a non-phase shifted signal from the second signal and a phase shifted signal from the first signal at the phase shifter; and
a signal summing device connected to the phase shifter and the plurality of phase switches for generating a summed output signal that is the sum of the non-phase shifted signal and the phase shifted signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
a plurality of phase control blocks as recited in claim 1.
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3. A phase control network comprising:
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a first phase control block as recited in claim 1 having a first output signal;
a second phase control block as recited in claim 1 having a second output signal; and
a third phase control block as recited in claim 1 receiving the first output signal and the second output signal and generating a third output signal in response to the first output signal and the second output signal.
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4. A phase control block as recited in claim 1 wherein the plurality of phase switches comprises a plurality of single pole, single throw switches.
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5. A phase control block as recited in claim 1 wherein said plurality of phase switches comprises a plurality of phase control switches selectively coupling a first input and a second input to said signal summing device.
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6. A phase control block as recited in claim 5 wherein said phase shifter comprises a first phase shifter and a second phase shifter, and said plurality of phase control switches selectively coupling said first phase shifter and said second phase shifter to said summing device.
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7. A phase control block as recited in claim 1 wherein said plurality of phase switches comprises a plurality of phase reversing switches selectively coupling a first input and a second input to said signal summing device.
a signal summing device connected to the phase shifter and the phase switch for generating a summed output signal that is the sum of the non-phase shifted signal and the phase shifted signal.
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8. A phase control network for combining signals from a phased array antenna comprising:
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a plurality of phase control blocks having a pair of inputs and a single output connected in a tree pattern to generate a single output signal;
a phase shifter;
a plurality of phase switches connected to the phase shifter having a first state wherein the plurality of phase switches forms a non-phase shifted signal from a first signal and a phase shifted signal from a second signal at the phase shifter and a second state wherein the plurality of phase switches forms a non-phase shifted signal from the second signal and a phase shifted signal from the first signal at the phase shifter; and
a signal summing device connected to the phase shifter and the plurality of phase switches for generating an output signal that is the sum of the non-phase shifted signal and the phase shifted signal. - View Dependent Claims (9, 10, 11)
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12. A method for combining signals from a phased array antenna comprising the steps of:
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(a) receiving a plurality of input signals in pairs wherein each of the pairs comprises a first input signal and a second input signal;
(b) in a first state of a switching circuit, phase shifting the first input signal to generate a phase-shifted signal;
(c) non-phase shifting the second signal to form a non-phase shifted signal;
(d) in a second state of the switching circuit, phase shifting the second input signal to form the phase-shifted signal;
(e) non-phase shifting the first signal to form the non-phase shifted signal; and
(f) summing the phase shifted signal with the non-phase shifted signal to generate a sum signal for each of the pairs. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification