Antenna diversity system having two antennas for radio reception in vehicles
First Claim
1. An antenna diversity system for radio reception in moving vehicles comprising:
- a) a receiver;
b) a receiver line;
c) at least two antennas;
d) a plurality of antenna feed lines coupled to said at least two antennas for transmitting a plurality of antenna feed signals; and
e) an antenna diversity module coupled to said receiver, via said receiver line, and to said at least two antennas, via said plurality of antenna feed lines, said antenna diversity module comprising;
i) at least one evaluation circuit for evaluating an interference in a reception signal from said antenna feed signals; and
ii) at least one processor for adjusting a magnitude and a phase angle of a linear combination of said plurality of antenna feed signals for creating a relatively low interference reception signal by said at least one evaluation circuit reading and sending an interference indication signal to said at least one processor;
wherein said antenna diversity module combines said plurality of antenna feed signals in an adjustable manner based on a magnitude and a phase angle, to form a linear combined signal that is present at an output of said antenna diversity module as a reception signal.
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Accused Products
Abstract
There is an antenna diversity system for radio reception in moving vehicles which includes a receiver, and at least two antennas coupled to the receiver. These antennas transmit antenna feed signals to an antenna diversity module coupled between the receiver and the antennas. In at least one embodiment, the antenna diversity module comprises at least one evaluation circuit for evaluating an interference in a reception signal, and at least one processor for adjusting a magnitude and a phase angle of a linear combination of the antenna feed signals. The evaluation circuit reads and sends an interference indication signal to the processor to create a relatively low interference signal. Thus, the diversity module combines the antenna feed signals in an adjustable manner based on an magnitude of phase angle, to form a linear combined signal that is present at the output of the antenna diversity module as a reception signal.
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Citations
19 Claims
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1. An antenna diversity system for radio reception in moving vehicles comprising:
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a) a receiver; b) a receiver line; c) at least two antennas; d) a plurality of antenna feed lines coupled to said at least two antennas for transmitting a plurality of antenna feed signals; and e) an antenna diversity module coupled to said receiver, via said receiver line, and to said at least two antennas, via said plurality of antenna feed lines, said antenna diversity module comprising; i) at least one evaluation circuit for evaluating an interference in a reception signal from said antenna feed signals; and ii) at least one processor for adjusting a magnitude and a phase angle of a linear combination of said plurality of antenna feed signals for creating a relatively low interference reception signal by said at least one evaluation circuit reading and sending an interference indication signal to said at least one processor; wherein said antenna diversity module combines said plurality of antenna feed signals in an adjustable manner based on a magnitude and a phase angle, to form a linear combined signal that is present at an output of said antenna diversity module as a reception signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An antenna diversity system for radio reception in moving vehicles comprising:
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a) a receiver comprising at least one evaluation circuit for evaluating an interference in a reception signal; b) a receiver line; c) at least two antennas coupled to said receiver; d) a plurality of antenna feed lines coupled to said at least two antennas for transmitting a plurality of antenna feed signals forming at least one reception signal; e) an antenna diversity module coupled to said receiver, via said receiver line, and to said at least two antennas, via said plurality of antenna feed lines; and f) at least one processor for adjusting a magnitude of and a phase angle of a linear combination of said at least two antenna feed signals for creating a relatively low interference reception signal by said at least one evaluation circuit reading and sending an interference indication signal to said at least one processor; wherein said diversity module via instructions from said at least one processor combines said plurality of antenna feed signals in an adjustable manner based on a magnitude and a phase angle, determined from said interference indication signal to form a linear combined signal that is present at the output of said antenna diversity module as a reception signal. - View Dependent Claims (16)
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17. An antenna diversity module having an input capable of coupling to at least two antennas for receiving a plurality of antenna signals and an output for feeding into a receiver, the diversity module comprising:
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a) at least one evaluation circuit for evaluating an interference in a reception signal from said antenna feed signals; b) at least one processor for adjusting a magnitude and a phase angle of a linear combination of said plurality of antenna feed signals for creating a relatively low interference reception signal by said at least one evaluation circuit reading and sending an interference indication signal to said at least one processor; c) an adjustable linear combination element, having a first and a second input for receiving at least one of the plurality of antenna feed signals wherein the plurality of antenna feed signals are superimposed in said adjustable linear combination element, wherein the plurality of antenna feed signals are combined according to magnitude and phase, forming a linear combined signal that is weighted at an output of said antenna diversity module, which is in the form of said reception signal; d) at least one adjustable linear transmission element having an adjustable complex transmission factor (k) in said adjustable linear combination element to set a weighing of superimposition according to magnitude of signal and phase; e) a summation element; f) at least one first and at least one second separate signal path, wherein an output of said signal paths are passed to a set of inputs of said summation element and wherein said signal paths are summed in said summation element forming a summed signal which is passed to the receiver via a receiver line; g) at least one adjustable signal level element for setting a magnitude of a complex transmission factor of said separate signal paths, wherein at least one level setting signal is passed to said at least one adjustable signal level element from said at least one processor; and h) at least one adjustable phase rotation device for setting a phase angle of said complex transmission factor of said signal path; and wherein a phase signal which is required for setting a phase angle of said complex transmission factor of said signal path is passed to said at least one adjustable phase rotation device; wherein said interference indication signal of said evaluation circuit is passed to said at least one processor wherein a set of setting signals passed from said at least one processor are for setting said adjustable linear combination element; wherein said at least one processor has a memory which stores a search algorithm according to an interference indicated by said at least one evaluation circuit, wherein interference of said reception signal arriving at said receiver is successively reduced in steps that follow one another within a relatively short period of time; wherein said antenna diversity module combines said plurality of antenna feed signals in an adjustable manner based on a magnitude and a phase angle, to form a linear combined signal that is present at an output of said antenna diversity module as a reception signal. - View Dependent Claims (18)
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19. An antenna diversity module which can be connected to a receiver and to antennas creating a plurality of antenna feed signals, the diversity module comprising:
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a) at least one evaluation circuit for evaluating an interference in a reception signal from the antenna feed signals; and b) at least one processor for adjusting a magnitude and a phase angle of a linear combination of the plurality of antenna feed signals for creating a relatively low interference reception signal by said at least one evaluation circuit reading and sending an interference indication signal to said at least one processor; wherein said antenna diversity module combines the plurality of antenna feed signals in an adjustable manner based on a magnitude and a phase angle, to form a linear combined signal that is present at an output of said antenna diversity module as a reception signal.
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Specification