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Off-chip detection of radiation from a linear array oscillator with a spiral antenna

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5 Author(s)
Kiryu, S. ; Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA ; Wenxing Zhang ; Siyuan Han ; Deus, S.
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Radiation from a linear array oscillator with a spiral antenna has been measured using an off-chip coupled bolometer. The array oscillator has a distributed array structure with 300 resistively shunted junctions which are placed in the groups of 6 junctions. The array oscillator was fabricated on a Si wafer with a two-arm spiral antenna. The chip was attached to a Si lens with an anti-reflection coating. Rather large power (>100 nW) was detected at a number of array bias voltages V/sub bias/ from 115 mV to 196 mV, which correspond from 185 GHz to 315 GHz. The maximum measured power was 550 nW at V/sub bias/=125 mV (200 GHz).

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Applied Superconductivity, IEEE Transactions on  (Volume:7 ,  Issue: 2 )