Multiband antenna with variable electrical tilt
First Claim
1. A feed system for controlling the variable electrical tilt in the vertical plane of arrayed radiating elements of a multiband antenna, comprising a Butler matrix and at least one module including delay lines, the Butler matrix having N inputs and N outputs and hybrid couplers, each input being capable of receiving a radio signal monoband or multiband belong to any frequency band and each output being capable of transmitting the signal to at least one radiating element allowing an independent electrical tilt for each frequency band, at least one output of the Butler matrix is connected to the module, which links the at least one output to the respective radiating element, the module comprising:
- a first stage of diplexers that receives the signal from said output and separates the signal into different frequency bands,a second stage of fixed-delay lines that applies a given electrical delay to the signals from the first stage within each frequency band,a third stage of variable phase shifters that introduces an adjusted phase shift of the signals from the second stage in each frequency band, anda fourth stage of diplexers that combines the signals from the third stage in the different frequency bands to transmit them to at least one radiating element.
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Accused Products
Abstract
A feed system for controlling the variable electrical tilt in the vertical plane of arrayed radiating elements of a multiband antenna, comprising a Butler matrix with N inputs and N outputs comprising hybrid couplers, each input receiving a radio signal and each output transmitting the signal to at least one radiating element. At least one output of the Butler matrix is connected to a module comprising (i) a first stage of diplexers that separates the signal into different frequency bands, (ii) a second stage of fixed delay lines that applies a given electrical delay to the signal in each frequency band, (iii) a third stage of variable phase shifters that introduce an adjusted phase shift of the signal into each frequency band, and (iv) a fourth stage of diplexers that combines the signals into the different frequency bands in order to transmit them to at least one radiating element.
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Citations
8 Claims
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1. A feed system for controlling the variable electrical tilt in the vertical plane of arrayed radiating elements of a multiband antenna, comprising a Butler matrix and at least one module including delay lines, the Butler matrix having N inputs and N outputs and hybrid couplers, each input being capable of receiving a radio signal monoband or multiband belong to any frequency band and each output being capable of transmitting the signal to at least one radiating element allowing an independent electrical tilt for each frequency band, at least one output of the Butler matrix is connected to the module, which links the at least one output to the respective radiating element, the module comprising:
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a first stage of diplexers that receives the signal from said output and separates the signal into different frequency bands, a second stage of fixed-delay lines that applies a given electrical delay to the signals from the first stage within each frequency band, a third stage of variable phase shifters that introduces an adjusted phase shift of the signals from the second stage in each frequency band, and a fourth stage of diplexers that combines the signals from the third stage in the different frequency bands to transmit them to at least one radiating element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for controlling the variable electrical tilt in the vertical plane of arrayed radiating elements of a multiband antenna via a feed system, wherein the feed system comprises a Butler matrix and at least one module including delay lines, the Butler matrix having N inputs and N outputs and hybrid couplers, each input being capable of receiving a radio signal monoband or multiband belong to any frequency band and each output being capable of transmitting the signal to at least one radiating element allowing an independent electrical tilt for each frequency band, at least one output of the Butler matrix is connected to the module, which links the at least one output to the respective radiating element, the method comprising:
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receiving the signal from said output and separating the signal into different frequency bands, applying a given electrical delay to the signals within each frequency band, introducing an adjusted phase shift of the signals in each frequency band, and combining the signals from the third stage in the different frequency bands to transmit them to at least one radiating element.
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Specification