Antenna arrangement with adjustable radiation pattern and method of operation
First Claim
Patent Images
1. Antenna arrangement comprising:
- at least four antenna element systems each being at least one antenna element arranged offset with respect to one another, at least in the horizontal direction,the at least four antenna element systems transmitting and receiving at least in one common polarization plane,a network, via which the at least antenna element systems can be supplied with a signal with an intensity or amplitude which can be adjusted relative to one another, said network including a differential phase shifter,wherein the network is arranged such that a different beam shape is used for receiving signals transmitting signals.
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Abstract
An improved antenna arrangement is distinguished by the following features: at least two antenna element systems are provided and each has at least one antenna element, which are arranged offset with respect to one another, at least in the horizontal direction, the at least two antenna element systems transmit and receive at least in one common polarization plane, a network is provided, via which the at least two antenna element systems can be supplied with a signal (Ain1, Ain2) with an intensity or amplitude which can be set differently or which can be adjusted relative to one another and preferably with a different phase angle.
55 Citations
17 Claims
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1. Antenna arrangement comprising:
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at least four antenna element systems each being at least one antenna element arranged offset with respect to one another, at least in the horizontal direction, the at least four antenna element systems transmitting and receiving at least in one common polarization plane, a network, via which the at least antenna element systems can be supplied with a signal with an intensity or amplitude which can be adjusted relative to one another, said network including a differential phase shifter, wherein the network is arranged such that a different beam shape is used for receiving signals transmitting signals.
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2. Antenna arrangement comprising:
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at least four antenna element systems each having at least one antenna element, said elements being arranged to be offset with respect to one another, at least in the horizontal direction, the at least four antenna element systems transmitting and receiving at least in one common polarization plane, a network, via which the at least four antenna element systems can be supplied with signals with an intensity or amplitude which can be adjusted relative to one another, the network having a phase adjusting device connected to receive an input signal, said input signal being split into at least two output signals with the same intensities but with different phase angles, and at least one hybrid circuit, via which the output signals are converted to hybrid output signals which are at relatively fixed predetermined phase angles with respect to one another and whose amplitudes differ from one another as a function of the different phase angles in the phase adjusting device, the at least one hybrid circuit comprising at least four hybrid circuits combined to form a Butler matrix, via which a four-column antenna array can be fed, in which an input signal which can be supplied to the input of the phase shifter adjusting device is split into two phase output signals and in that each output of the phase adjusting device is connected to two inputs of the Butler matrix via a respective downstream branching or addition point. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Antenna arrangement comprising:
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at least four antenna element systems each having at least one antenna element, said elements being arranged to be offset with respect to one another, at least in the horizontal direction, the at least four antenna element systems transmitting and receiving at least in one common polarization plane, a network, via which tae at least two antenna element systems can be supplied with signals with an intensity or amplitude which can be adjusted relative to one another, the network having a phase adjusting device connected to receive an input signal, said input signal being split into two output signals with the same intensities but with different phase angles, and at least one hybrid circuit, via which the output signals are converted to hybrid output signals which are at relatively fixed predetermined phase angles with respect to one another and whose amplitudes differ from one another as a function of the different phase angles in the phase adjusting device, the at least one hybrid circuit comprising at least four hybrid circuits combined to form a Butler matrix, via which a four-column antenna array is fed, with a double or multiple phase shifter arrangement being provided, such that the input signal which can be supplied to the input of the network and hence to the phase shifter adjusting device can be divided into four phase shifter output signals, which can be supplied to the four inputs of the Butler matrix.
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14. Method for operating an antenna arrangement, comprising:
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varying an input signal via (i) either a phase adjusting device or a phase shifter adjusting device and (ii) a downstream network, such that the signals at the output of the network are either in phase or are not in phase, where the signals are input into antenna element systems to control the shape of the horizontal radiation pattern, said radiation pattern having at least three main lobes or an odd number of main lobes, whose maximum intensities differ from one another by less than 50%, further including using at least four hybrid circuits, via which a four-column antenna array is fed, and further including tapping off two phase shifter output signals at the two outputs of a phase shifter adjusting device, and supplying four resulting signals to four inputs of a Butler matrix. - View Dependent Claims (15, 16, 17)
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Specification