INTEGRATED CIRCUIT, RADAR DEVICE AND METHOD OF CALIBRATING A RECEIVER
First Claim
1. An integrated circuit for a radar device comprising at least one transmitter and at least one receiver, the integrated circuit comprising:
- a direct digital synthesiser, DDS, configured to output at least one control signal; and
a multiplier configured to receive a local oscillator input signal and a further input signal from the DDS;
wherein;
in a first mode of operation the DDS and multiplier cooperate to generate at least one transmitter signal to be transmitted from the radar device; and
in a second mode of operation the DDS and multiplier cooperate to generate at least one low frequency modulated transmitter signal to be internally routed to the at least one receiver for calibrating the at least one receiver.
15 Assignments
0 Petitions
Accused Products
Abstract
An integrated circuit for a radar device comprises at least one transmitter and at least one receiver. The integrated circuit comprises: a direct digital synthesiser, DDS, configured to output a control signal; and a multiplier configured to receive a local oscillator input signal and a further input signal from the DDS. In a first mode of operation, the DDS and multiplier cooperate to generate at least one transmitter signal to be transmitted from the radar device; and in a second mode of operation the DDS and multiplier cooperate to generate at least one low frequency modulated transmitter signal to be internally routed to the at least one receiver for calibrating the at least one receiver.
39 Citations
19 Claims
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1. An integrated circuit for a radar device comprising at least one transmitter and at least one receiver, the integrated circuit comprising:
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a direct digital synthesiser, DDS, configured to output at least one control signal; and a multiplier configured to receive a local oscillator input signal and a further input signal from the DDS; wherein; in a first mode of operation the DDS and multiplier cooperate to generate at least one transmitter signal to be transmitted from the radar device; and in a second mode of operation the DDS and multiplier cooperate to generate at least one low frequency modulated transmitter signal to be internally routed to the at least one receiver for calibrating the at least one receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A radar device comprising:
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at least one receiver to be calibrated; and at least one transmitter comprising; a direct digital synthesiser, DDS, configured to output at least one control signal; and a multiplier configured to receive a local oscillator input signal and a further input signal from the DDS; wherein; in a first mode of operation the DDS and multiplier cooperate to generate at least one transmitter signal to be transmitted from the radar device; and in a second mode of operation the DDS and multiplier cooperate to generate at least one low frequency modulated transmitter signal to be internally routed to the at least one receiver for calibrating the at least one receiver. - View Dependent Claims (9, 10, 11, 12)
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13. The radar device of claim wherein the radar device is from a group of:
- a long range radar device, short range radar device, operating at millimetre waveform frequencies.
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14. A method of calibrating at least one receiver of a radar device, the method comprising:
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switching the radar device to a receiver calibration mode of operation; re-configuring a transmitter circuit of the radar device to generate at least one low frequency modulated transmitter signal; routing the generated at least one low frequency modulated transmitter signal to the at least one receiver internally within the radar device; processing the received at least one low frequency modulated transmitter signal; and calibrating the at least one receiver of the radar device using the processed at least one low frequency modulated transmitter signal. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification