| 摘要 |
An apparatus comprising: a sensor (1) configured to sense electromagnetic radiation (15) wherein the sensor (1) comprises a sensing portion (3) comprising a pyroelectric material (4) configured to be responsive to incident electromagnetic radiation (15) and a transducing portion (7) configured to convert the response of the pyroelectric material (4) into an output signal; and at least one antenna (21) configured to direct the electromagnetic radiation (15) onto the sensor (1). |
