US 2014/0111366 A1Published application

Fine grained duty cycling and timing control for pulsed radar

AssigneeTexas Instruments Incorporated

InventorsBrian P. Ginsburg, Srinath M. Ramaswamy, Vijay B. Rentala, Eunyoung Seok, Baher S. Haroun

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Abstract

A method is provided. A first edge on a first gating signal is generated, and a local oscillator and a shared clocking circuit with the first edge on the first gating signal. A second edge on a second gating signal is generated following the first edge on the first gating signal, and a receiver circuit is activated with the second edge on the second gating signal, where the receiver circuit includes a mixer. A transmit pulse following the first edge on the first gating signal is generated with the transmit pulse having a third edge. A switch that short circuits outputs of the mixer is then released following the later of the third edge of the transmit pulse and a delay.

Claims19

Dependent claims

An apparatus comprising:

a first gating circuit;
a second gating circuit;
a baseband that is coupled to the first gating circuit;
a local oscillator that is coupled to the second gating circuit;
a transceiver having:
a radiator;
a receiver circuit that is coupled between the radiator and the baseband circuit;
a transmitter circuit that is coupled to the radiator;
and
a shared clocking circuit that is coupled to the local oscillator, the receiver circuit, and the transmitter circuit;
and
a controller that is coupled to the first gating circuit, the second gating circuit, the receiver circuit, and the shared clocking circuit, wherein the controller is configured to supply a first gating signal to the first gating circuit, the receiver circuit, and the shared clocking circuit, and wherein the controller is configured to supply a second gating signal to the second gating circuit and shared clocking circuit, and wherein the controller is configured to control the shared clocking circuit such that the shared clocking circuit provides a first local oscillator signal to the receiver circuit when the first gating signal indicates activation, and wherein the controller is configured to control the shared clocking circuit such that the shared clocking circuit provides a second local oscillator signal to the transmitter circuit when the second gating signal indicates activation.

9 more elements

An apparatus comprising:

a first gating circuit;
a second gating circuit;
a baseband that is coupled to the first gating circuit;
a local oscillator that is coupled to the second gating circuit;
a plurality of transceiver that are arranged in to a phased array, wherein each transceiver includes:
a radiator;
a receiver circuit that is coupled between the radiator and the baseband circuit;
a transmitter circuit that is coupled to the radiator;
and
a shared clocking circuit that is coupled to the local oscillator, the receiver circuit, and the transmitter circuit;
and
a controller that is coupled to the first gating circuit, the second gating circuit, the receiver circuit, and the shared clocking circuit, wherein the controller is configured to supply a first gating signal to the first gating circuit, the receiver circuit, and the shared clocking circuit, and wherein the controller is configured to supply a second gating signal to the second gating circuit and shared clocking circuit, and wherein the controller is configured to control the shared clocking circuit such that the shared clocking circuit provides a first local oscillator signal to the receiver circuit when the first gating signal indicates activation, and wherein the controller is configured to control the shared clocking circuit such that the shared clocking circuit provides a second local oscillator signal to the transmitter circuit when the second gating signal indicates activation.

9 more elements

Dependencies are inferred from the claim text.