Microwave motion sensor with a reflector
AssigneeHoneywell International Inc.
InventorsXiaodong Wu, James N. Helland, Leslie K. Green
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Abstract
A microwave motion sensor including a patch antenna having a plurality of microwave radiating elements for transmitting and receiving a microwave signal where each microwave radiating element is of the antenna in an array configuration. A reflector is disposed above the antenna for downward shaping the radiating signal, where the microwave radiating elements together with the reflector provide a radiation pattern where a main beam is transmitted in a direction orthogonal to a surface of said antenna and a sided lobe transmitted downward in amplitude below the microwave motion sensor.
Claims8
A microwave motion sensor, comprising:
- an antenna having a plurality of microwave radiating elements for transmitting and receiving a microwave signal;
- and
- a reflector disposed above said antenna that is constructed for downward shaping said microwave signal, said reflector is curved shaped,
- wherein said microwave signal transmitted by said microwave radiating elements includes a radiation pattern with at least a main lobe, a first upward looking side lobe, and a second downward looking side lobe, and
- wherein said microwave signal transmitted by said microwave radiating elements is reflected by said reflector without substantially affecting said main lobe and said first upward looking side lobe of said radiation pattern of said microwave signal transmitted by said microwave radiating elements.
Dependencies are inferred from the claim text.