Phased-array transceiver for millimeter-wave frequencies
First Claim
1. A phased-array receiver having beam-steering ability, comprising:
- a plurality of radio frequency (RF) front-ends, each configured to receive a signal with a given delay relative to the others such that the gain of the received signal is highest in a given direction, each of the plurality of RF front-ends comprising;
a phase shifter configured to delay the signal in accordance with the given direction; and
a variable amplifier configured to adjust the gain of the signal; and
a power combination network configured to selectively accept an RF signal from each of the RF front-ends and to pass a combined RF signal to a down-conversion element such that RF signals from unselected RF front-ends are not part of the combined RF signal, wherein the power combination network includes a combination of active and passive components that include a cross-coupled transmission line and a decoupling resistive network.
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Accused Products
Abstract
A phased-array receiver that may be effectively implemented on a silicon substrate. A receiver includes multiple radio frequency (RF) front-ends, each configured to receive a signal with a given delay relative to the others such that the gain of the received signal is highest in a given direction. The receiver also includes a power combination network configured to accept an RF signal from each of the RF front-ends and to pass a combined RF signal to a down-conversion element, where the power distribution network includes a combination of active and passive components. Each RF front-end includes a phase shifter configured to delay the signal in accordance with the given direction and a variable amplifier configured to adjust the gain of the signal.
15 Citations
13 Claims
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1. A phased-array receiver having beam-steering ability, comprising:
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a plurality of radio frequency (RF) front-ends, each configured to receive a signal with a given delay relative to the others such that the gain of the received signal is highest in a given direction, each of the plurality of RF front-ends comprising; a phase shifter configured to delay the signal in accordance with the given direction; and a variable amplifier configured to adjust the gain of the signal; and a power combination network configured to selectively accept an RF signal from each of the RF front-ends and to pass a combined RF signal to a down-conversion element such that RF signals from unselected RF front-ends are not part of the combined RF signal, wherein the power combination network includes a combination of active and passive components that include a cross-coupled transmission line and a decoupling resistive network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for beam-steering in a phased-array receiver implemented on a silicon substrate, comprising the steps of:
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receiving a signal at a plurality of receiver front-ends; phase shifting the signal at each front-end such the received signals interfere to produce a directed receiver gain; combining the signals from the front-ends at a power combination network configured to selectively accept a signal from the plurality of front-ends, such that signals from unselected front-ends are not part of the combined signals; measuring the total power of the combined signals; and adjusting an amplification gain of each of the front-ends based on the measured power output to compensate for deviations from an optimal power output. - View Dependent Claims (11, 12, 13)
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Specification