Device for transmitting and receiving microwaves subjected to circular polarization
First Claim
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1. A device configured to simultaneously transmit and receive microwaves including a radiating element, wherein the radiating element (60;
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219) has substantially orthogonal transmit and receive ports (68, 66;
224, 225), wherein the relative phase of the transmit and receive signals and a shape of the radiating element are such that the transmit and receive signals are circularly polarized in opposite directions, and wherein a frequency of the transmit signals is different from a frequency of the receive signals.
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Abstract
The invention relates to a device for transmitting and receiving microwaves including a planar radiating element. The device is characterized in that the radiating element (60) has substantially orthogonal transmit and receive ports (68, 66) and the relative phase of the transmit and receive signals and the shape of the radiating element are such that the transmit and receive signals, whose frequencies are different, are circularly polarized in opposite directions.
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Citations
17 Claims
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1. A device configured to simultaneously transmit and receive microwaves including a radiating element, wherein the radiating element (60;
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219) has substantially orthogonal transmit and receive ports (68, 66;
224, 225), wherein the relative phase of the transmit and receive signals and a shape of the radiating element are such that the transmit and receive signals are circularly polarized in opposite directions, and wherein a frequency of the transmit signals is different from a frequency of the receive signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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219) has substantially orthogonal transmit and receive ports (68, 66;
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17. A compact radiating element for a device capable of simultaneously transmitting first microwave signals in a first frequency band and receiving second microwave signals in a second frequency band different from the first frequency band, comprising:
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a transmitting port for transmitting the first microwave signals;
a receiving port arranged substantially orthogonal to the transmitting port for receiving the second microwave signals;
a short-circuit cavity;
an intermediate cavity;
a matching cavity; and
a rectangular polarizing waveguide section, wherein one of the ports is arranged between the short-circuit cavity and the intermediate cavity, wherein the other one of the ports is arranged between the intermediate cavity and the matching cavity, and wherein the first microwave signals and the second microwave signals are circularly polarized in opposite directions.
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Specification