Patent ID: 8330111

Claim:
Apparatus for the detection of electromagnetic radiation in the THz frequency range comprising at least one field effect transistor (FET 1 , FET 2 ) which has a source (S), a drain (D), a gate (G), a gate-source contact, a source-drain channel and a gate-drain contact, and an antenna structure ( 2 ), wherein the at least one field effect transistor (FET 1 , FET 2 ) is connected to the antenna structure ( 2 ) such that an electromagnetic signal received by the antenna structure ( 2 ) in the THz frequency range is fed into the at least one field effect transistor (FET 1 , FET 2 ) by way of the gate-source contact, and wherein the field effect transistor (FET 1 , FET 2 ) and the antenna structure ( 2 ) are arranged together on a single substrate, wherein the gate (G) has a gate contact and the drain (D) has a drain contact, wherein the gate contact and the drain contact are connected together by way of an external capacitance (C 1 , C 2 ), and the gate-drain contact has an intrinsic capacitance, so that a voltage at the gate (G) follows a voltage at the drain (D).