Adaptive mode optimizer and mode shifter
First Claim
1. A mode shifter circuit connectable to an external radio frequency (RF) transceiver for frequency band conversion, the circuit comprising:
- an input port configured to receive a radio frequency (RF) signal from an antenna port of the external radio frequency (RF) transceiver;
a signal switch;
a port signal analyzer configured to perform operations comprising;
determining whether a power measurement at the input port exceeds a threshold; and
issuing a transmit command signal to the signal switch to connect the input port to a transmit path when the power measurement exceeds the threshold;
a transmit signal processor configured to perform operations comprising;
shifting the RF signal to a shifted signal band, wherein the shifted signal band is lower or higher that a native radio frequency band of the external transceiver; and
communicating the shifted RF signal to at least one antenna of a plurality of antennas for transmission, wherein the transmit signal processor is included in the transmit path, wherein the plurality of antennas is configured to form a phased array; and
an antenna selection processor configured to perform operations comprising;
determining and assigning a weight function to each of the plurality of antennas.
7 Assignments
0 Petitions
Accused Products
Abstract
A mode shifter connects via an input port to an antenna port of a transceiver. A port signal analyzer monitors the signal at the input port and informs a signal switch whether the signal power exceeds a threshold value. When the signal power does not exceed the threshold value, the signal switch connects the input port (and consequently the antenna port of the transceiver) to a receive path comprising a receive signal processor, an antenna selection processor, and an antenna port. When the signal exceeds the threshold value, the signal switch connects the input port (and consequently the antenna port of the transceiver) to a transmit path comprising a transmit signal processor, the antenna selection processor, and an antenna port.
7 Citations
16 Claims
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1. A mode shifter circuit connectable to an external radio frequency (RF) transceiver for frequency band conversion, the circuit comprising:
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an input port configured to receive a radio frequency (RF) signal from an antenna port of the external radio frequency (RF) transceiver; a signal switch; a port signal analyzer configured to perform operations comprising; determining whether a power measurement at the input port exceeds a threshold; and issuing a transmit command signal to the signal switch to connect the input port to a transmit path when the power measurement exceeds the threshold; a transmit signal processor configured to perform operations comprising; shifting the RF signal to a shifted signal band, wherein the shifted signal band is lower or higher that a native radio frequency band of the external transceiver; and communicating the shifted RF signal to at least one antenna of a plurality of antennas for transmission, wherein the transmit signal processor is included in the transmit path, wherein the plurality of antennas is configured to form a phased array; and an antenna selection processor configured to perform operations comprising; determining and assigning a weight function to each of the plurality of antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mode shifter connectable to an external radio frequency (RF) transceiver for frequency band conversion, the mode shifter comprising:
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L mode shifter modules each comprising a port signal analyzer, a signal switch, a transmit signal processor and an antenna selection processor, wherein L is equal to or greater than 2; and L input ports, wherein each of the L input ports is electrically connected to one of the L mode shifter modules and configured to receive a radio frequency (RF) signal from any of one or more antenna ports of the external radio frequency (RF) transceiver, and wherein for each of the L mode shifter modules; the port signal analyzer is configured to perform operations comprising; determining whether a power measurement at any of the L input ports exceeds a threshold; and issuing a transmit command signal to the signal switch to connect the input port to a transmit path when the power measurement exceeds the threshold; the transmit signal processor configured to perform operations comprising; shifting the RF signal to a shifted signal band, wherein the shifted signal band is lower or higher that a native radio frequency band of the external transceiver; and communicating the shifted RF signal to at least one antenna of a plurality of antennas for transmission, wherein the transmit signal processor is included in the transmit path, wherein the plurality of antennas is configured to form a phased array; and the antenna selection processor configured to perform operations comprising; determining and assigning a weight function to each of the plurality of antennas. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
the antenna selection switch is configured to perform operations comprising selecting in response to the antenna selection command the at least one antenna.
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14. The mode shifter of claim 13, wherein the at least one antenna characteristic is selected from the group consisting of a spatial transmission pattern, a polarization, a gain measure, a bandwidth, a data rate, an impedance measure, and a pointing direction.
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15. The mode shifter of claim 9, wherein the weight functions of the plurality of antennas are pre-determined.
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16. The mode shifter of claim 9, wherein the L mode shifter modules each further comprise a receive signal processor and wherein for each of the L mode shifter modules:
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the port signal analyzer is configured to further perform operations comprising issuing a receive command signal to the signal switch to connect the input port to a receive path when the power measurement is less than or equal to the threshold, the receive path comprises the receive signal processor configured to perform operations comprising; receiving a signal in the shifted signal band from the at least one antenna; shifting the received signal to the native radio frequency band of the external transceiver; and sending the shifted received signal via the signal switch and the input port to the external transceiver.
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Specification