Control of radiation pattern in wireless telecommunications system
First Claim
1. A circuit for controlling a characteristic of a radiation pattern provided by an antenna array of a base station of a wireless telecommunications system, where the antenna array comprises at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal, the circuit comprising:
- an antenna signal amplitude adjuster for adjusting a relative amplitude of at least two antenna-unit-specific antenna signals as a function of a phase shift between at least two radio frequency signals inputted into the antenna signal amplitude adjuster; and
an adjustable phase shifter for adjusting the phase shift between the at least two radio frequency signals inputted into the antenna signal amplitude adjuster.
1 Assignment
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Accused Products
Abstract
The invention relates to controlling of characteristics of radiation patterns in wireless telecommunications system, where radiation patterns are provided by antenna arrays, each antenna array comprising at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal. A control circuit for controlling the characteristics of radiation patterns comprises an antenna signal amplitude adjuster for adjusting a relative amplitude of at least two antenna-unit-specific antenna signals as a function of a phase shift between at least two radio frequency signals inputted into the antenna signal amplitude adjuster. The circuit further comprises an adjustable phase shifter for adjusting the phase shift between the at least two radio frequency signals inputted into the antenna signal amplitude adjuster.
42 Citations
25 Claims
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1. A circuit for controlling a characteristic of a radiation pattern provided by an antenna array of a base station of a wireless telecommunications system, where the antenna array comprises at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal, the circuit comprising:
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an antenna signal amplitude adjuster for adjusting a relative amplitude of at least two antenna-unit-specific antenna signals as a function of a phase shift between at least two radio frequency signals inputted into the antenna signal amplitude adjuster; and
an adjustable phase shifter for adjusting the phase shift between the at least two radio frequency signals inputted into the antenna signal amplitude adjuster. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An antenna system of a base station of a wireless telecommunications system, comprising:
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an antenna array for providing a radiation pattern, the antenna array comprising at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal;
an antenna signal amplitude adjuster for adjusting relative amplitude of at least two antenna-unit-specific antenna signals as a function of a phase shift between at least two radio frequency signals inputted into the antenna signal amplitude adjuster; and
an adjustable phase shifter for adjusting the phase shift between the at least two radio frequency signals inputted into the antenna signal amplitude adjuster. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A base station of a wireless telecommunications system, comprising:
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an antenna array for providing a radiation pattern, the antenna array comprising at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal;
an antenna signal amplitude adjuster for adjusting relative amplitude of at least two antenna-unit-specific antenna signals as a function of a phase shift between at least two radio frequency signals inputted into the antenna signal amplitude adjuster; and
an adjustable phase shifter for adjusting the phase shift between the at least two radio frequency signals inputted into the antenna signal amplitude adjuster. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of controlling a characteristic of a radiation pattern provided by an antenna array of a base station of a wireless telecommunications system, where the antenna array comprises at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal, comprising:
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adjusting a phase shift between at least two radio frequency signals; and
adjusting a relative amplitude of at least two antenna-unit-specific antenna signals as a function of the phase shift between the at least two radio frequency signals. - View Dependent Claims (20, 21, 22, 23)
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24. A circuit for controlling a characteristic of a radiation pattern provided by an antenna array of a base station of a wireless telecommunications system, where the antenna array comprises at least two independent antenna units, each antenna unit being associated with an antenna-unit-specific antenna signal, the circuit comprising:
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amplitude adjusting means for adjusting a relative amplitude of at least two antenna-unit-specific antenna signals as a function of a phase shift between at least two radio frequency signals inputted into the antenna signal amplitude adjuster; and
phase adjusting means for adjusting the phase shift between the at least two radio frequency signals inputted into the amplitude adjusting means. - View Dependent Claims (25)
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Specification