Radar apparatus
AssigneeMbda UK Limited
InventorDavid Lynam
Life of this patent
Estimating the term…
Abstract
A radar apparatus including a transmit/receive antenna having a plurality of channels, a comparator coupled to the antenna channels for providing receive signal sum and difference channels, a radar receiver, a coupler for coupling the sum and difference channels to the radar receiver, a radar transmitter for providing a signal to be transmitted, a coupler for coupling the transmitter to a cross-channel port of the comparator, and an adjuster for adjusting a phase length of at least one antenna channel so that when the apparatus is transmitting, the transmitted signals from the antenna channels have a specified relative phase relationship.
Claims27
A radar apparatus comprising:
- a transmit/receive antenna having a plurality of antenna channels;
- comparator means coupled to the antenna channels for providing received signal sum and difference channels at respective sum and difference ports;
- a radar receiver;
- means coupling the sum and difference ports to the radar receiver;
- a radar transmitter for providing a signal to be transmitted;
- means coupling the transmitter to a cross-channel port of the comparator means;
- and
- means for adjusting a phase length of at least one antenna channel between transmitting and receiving so that when the apparatus is transmitting, transmitted signals from the antenna channels have a specified relative phase relationship.
A radar apparatus comprising:
- a transmit/receive antenna having a plurality of antenna channels;
- a comparator coupled to the antenna channels for providing received signal sum and difference channels at respective sum and difference ports;
- a radar receiver;
- circuitry for coupling the sum and difference ports to the radar receiver;
- a radar transmitter for providing a signal to be transmitted;
- circuitry for coupling the transmitter to a cross-channel port of the comparator;
- and
- an electronic switch for adjusting a phase length of at least one antenna channel only when transmitting so that when the apparatus is transmitting, the transmitted signals from the antenna channels have a specified relative phase relationship.
Dependencies are inferred from the claim text.