Agile and adaptive wideband MIMO antenna isolation
First Claim
1. A transceiver, comprising:
- a signal processor configured to output or receive a signal as a plurality of distinguishable data streams;
a plurality of antenna ports configured to respectively convey the plurality of distinguishable data streams between the signal processor and an antenna array having a plurality of wideband antennas configured to wirelessly transmit or receive the plurality of distinguishable data streams;
wherein the pluraity of antenna ports comprise;
a first antenna port configured to convey a first data stream between the signal processor and a first wideband antenna and a second wideband antenna; and
a second antenna port configured to convey a second data stream between the signal processor and a third wideband antenna; and
a spatial filter element configured to provide isolation between the plurality of antenna ports by operating one or more of the plurality of wideband antennas to perform beamforming that attenuates a wirelessly transmitted or received data stream in a direction of other wideband antennas within the antenna array.
4 Assignments
0 Petitions
Accused Products
Abstract
The disclosed invention relates to a MIMO (multiple input, multiple output) wideband transceiver. In some cases, the MIMO wideband transceiver comprises a signal processor that outputs or receives a plurality of distinguishable data streams. A first data stream is provided to a first antenna port connected to a plurality of wideband antennas, while a second data stream is provided to a second antenna port connected to a wideband antenna. A spatial filter element configured to assign antenna weights to the plurality of wideband antennas, which cause the wideband antennas to operate in a manner that attenuates wireless signals, at a frequency range at which the wideband transmit wideband radiate, in the direction of the wideband antenna without attenuating the wireless signals in other directions. By attenuating signals extending between the plurality of wideband antennas and the wideband antenna, wideband decoupling between first and second antenna ports is achieved.
18 Citations
19 Claims
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1. A transceiver, comprising:
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a signal processor configured to output or receive a signal as a plurality of distinguishable data streams; a plurality of antenna ports configured to respectively convey the plurality of distinguishable data streams between the signal processor and an antenna array having a plurality of wideband antennas configured to wirelessly transmit or receive the plurality of distinguishable data streams; wherein the pluraity of antenna ports comprise; a first antenna port configured to convey a first data stream between the signal processor and a first wideband antenna and a second wideband antenna; and a second antenna port configured to convey a second data stream between the signal processor and a third wideband antenna; and a spatial filter element configured to provide isolation between the plurality of antenna ports by operating one or more of the plurality of wideband antennas to perform beamforming that attenuates a wirelessly transmitted or received data stream in a direction of other wideband antennas within the antenna array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile communication device, comprising:
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a transmitter or receiver path comprising; a first antenna port connected to two or more wideband antennas, configured to transmit or receive a first data stream, by way of a first adjustment network comprising circuit elements configured to introduce a phase shift or amplitude shift into the first data stream; a second antenna port connected to a wideband antenna configured to transmit or receive a second data stream; a MIMO channel determination unit configured to determine data corresponding to a leakage between the first antenna port and the second antenna port; and a beamforming element configured to receive the data from the MIMO channel determination unit and based thereupon to adjust the values of the circuit elements within the first adjustment network, so as to enable a beamforming functionality that reduces leakage of the first data stream to the second antenna port. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for reducing leakage between antenna ports of a MIMO wideband antenna array, comprising:
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providing a MIMO transceiver having first antenna port configured to convey a first data stream between a signal processor and a plurality of wideband antennas within an antenna array and a second antenna port configured to convey a second data stream between a signal processor and a wideband antenna within the antenna array; determining a leakage of the first data stream into the second antenna port; and operating the plurality of wideband antennas in a manner that reduces the leakage by attenuating an amplitude of a wirelessly transmitted first data stream in the direction of the wideband antenna. - View Dependent Claims (17, 18, 19)
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Specification