RADAR SYSTEM AND METHOD OF MANUFACTURING SAME
First Claim
1. A radar system comprising:
- a transmitting assembly for receiving an input signal and for transmitting an incident radar signal, the transmitting assembly comprising;
a Rotman lens comprising;
a lens cavity defined by a bottom, a top and a sidewall, wherein the bottom is separated by the top to form a lens gap between 10 microns to 120 microns, and preferably 40 microns to 60 microns,a plurality of beam ports in communication with the lens cavity and being spaced towards a first end, wherein each beam port is configured to allow the propagation of an electromagnetic wave having a frequency at a selected wavelength (λ
) into the lens cavity, anda plurality of array ports in communication with the lens cavity and spaced towards a second end of the lens cavity opposite the first end, wherein the spacing of the plurality of array ports is configured to effect a phase shift of the electromagnetic wave from each of the beam ports to all of the array ports, and wherein the plurality of array ports outputs a plurality of time-delayed, in-phase signals based on the electromagnetic wave entering the lens cavity from one of the plurality of beam ports; and
a patch antenna assembly comprising a plurality of antenna arrays,wherein each antenna array is in communication with one of the array ports, and wherein the plurality of antenna arrays is operable to receive the plurality of time-delayed, in-phase signals from the Rotman lens and to transmit incident radar signals in a selected direction towards a target;
a receiving assembly for receiving a reflected radar signal from the target and for producing an output signal;
a control unit for operating the radar system; and
a signal processing unit for comparing the input signal sent to the transmitting assembly and the output signal produced from the receiving assembly.
1 Assignment
0 Petitions
Accused Products
Abstract
A radar system (100) is described including a transmitting assembly (10), a receiving assembly (20), a control unit (30) and a signal processing unit (40). The transmitting assembly (10) receives an input signal (31) and transmits an incident radar signal (2). The transmitting assembly (10) includes a Rotman lens (12) having a lens cavity (74), a plurality of beam ports (60), a plurality of array ports (62) and a patch antenna assembly (14). The lens cavity (74) has a lens gap (h) between 10 microns to 120 microns, and preferably 40 microns to 60 microns. The patch antenna assembly (14) includes a plurality of antenna arrays (130) operable to receive a plurality of time-delayed, in-phase signals from the Rotman lens (12) and to transmit the incident radar signal (2) towards a target (4). The receiving assembly (20) receives a reflected radar signal (6) and produces an output signal. The signal processing unit (40) compares the input signal (31) to the output signal and implements an algorithm determining the range, velocity and position of the target (4).
205 Citations
43 Claims
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1. A radar system comprising:
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a transmitting assembly for receiving an input signal and for transmitting an incident radar signal, the transmitting assembly comprising; a Rotman lens comprising; a lens cavity defined by a bottom, a top and a sidewall, wherein the bottom is separated by the top to form a lens gap between 10 microns to 120 microns, and preferably 40 microns to 60 microns, a plurality of beam ports in communication with the lens cavity and being spaced towards a first end, wherein each beam port is configured to allow the propagation of an electromagnetic wave having a frequency at a selected wavelength (λ
) into the lens cavity, anda plurality of array ports in communication with the lens cavity and spaced towards a second end of the lens cavity opposite the first end, wherein the spacing of the plurality of array ports is configured to effect a phase shift of the electromagnetic wave from each of the beam ports to all of the array ports, and wherein the plurality of array ports outputs a plurality of time-delayed, in-phase signals based on the electromagnetic wave entering the lens cavity from one of the plurality of beam ports; and a patch antenna assembly comprising a plurality of antenna arrays, wherein each antenna array is in communication with one of the array ports, and wherein the plurality of antenna arrays is operable to receive the plurality of time-delayed, in-phase signals from the Rotman lens and to transmit incident radar signals in a selected direction towards a target; a receiving assembly for receiving a reflected radar signal from the target and for producing an output signal; a control unit for operating the radar system; and a signal processing unit for comparing the input signal sent to the transmitting assembly and the output signal produced from the receiving assembly. - View Dependent Claims (2, 3, 5, 6, 8, 9, 10, 12, 13, 14, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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4. (canceled)
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7. (canceled)
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11. (canceled)
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15. (canceled)
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16. The radar system of 14, wherein the plurality of time-delayed, in-phase signals are electromagnetic signals and the patch antenna assembly is operable to receive electrical signals,
the system further including at least one microwave interconnect device, wherein the plurality of time-delayed, in-phase signals are converted to said electrical signals by the at least one microwave interconnect device.
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26. (canceled)
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27. (canceled)
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28. (canceled)
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29. (canceled)
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30. (canceled)
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31. (canceled)
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32. (canceled)
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33. (canceled)
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34. (canceled)
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35. (canceled)
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36. A radar system comprising:
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a transmitting assembly for receiving an input signal and for transmitting an incident radar signal, the transmitting assembly comprising; a Rotman lens comprising; a lens cavity defined by a bottom, a top and a sidewall, wherein the bottom is separated by the top to form a lens gap between about 10 microns to about 120 microns, a plurality of beam ports in communication with the lens cavity and being spaced towards a first end, wherein each beam port is configured to allow the propagation of an electromagnetic wave having a frequency at a selected wavelength (λ
) into the lens cavity, anda plurality of array ports in communication with the lens cavity and spaced towards a second end of the lens cavity opposite the first end, wherein the spacing of the plurality of array ports is configured to effect a phase shift of the electromagnetic wave from each of the beam ports to all of the array ports, whereby the plurality of array ports output a plurality of time-delayed, in-phase signals based on the electromagnetic wave entering the lens cavity from one of the plurality of beam ports; and an antenna assembly comprising at least one antenna arrays in communication with one of the array ports, and wherein said at least one antenna array is operable to receive the plurality of time-delayed, in-phase signals from the Rotman lens and to transmit incident radar signal in a selected direction towards a target. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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Specification