Compact V-Band MMIC Square-law Power Detector with 70 dB Dynamic Range exploiting State-of-the-art Graphene diodes

IEEE MTT-S International Microwave Symposium digest, pp. 888–891

Abstract

Design, implementation, and characterisation of a compact MMIC millimetre-wave square-law power detector with a wide dynamic range (DR) is presented. The proposed design exploits an optimised graphene-based diode with a record zero-bias short-circuit current responsivity of 71 V−1. The diode is integrated alongside with our in-house, thin-film MMIC technology which is fabricated on a 500-µm rigid quartz substrate. The fabricated prototype occupies 0.1 mm2of chip area including pads. Measurement results show wide input matching from 40 – 70 GHz with measured S11better than −13 dB over the design bandwidth. The measured dynamic range is 70 dB, and the voltage responsivity is 98 mV/mW at 60 GHz. Measured video-bandwidth (VBW) is 2.2 GHz. To our best knowledge, the presented prototype has the widest dynamic range of all published square-law detectors.

Authors 7

1. Mohamed Saeed Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics, RWTH Aachen University,Germany

   Chair of High Frequency Electronics, RWTH Aachen University, Germany

2. Ahmed Hamed Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics, RWTH Aachen University,Germany

   Chair of High Frequency Electronics, RWTH Aachen University, Germany

3. Burkay Uzlu Aachen AMO GmbH

   AMO (Germany)

   Affiliation as printed

   AMO GmbH,Aachen,Germany

   AMO GmbH, Aachen, Germany

4. Eyyub Baskent Aachen AMO GmbH

   AMO (Germany)

   Affiliation as printed

   AMO GmbH,Aachen,Germany

   AMO GmbH, Aachen, Germany

5. Martin Otto Aachen AMO GmbH

   AMO (Germany)

   Affiliation as printed

   AMO GmbH,Aachen,Germany

   AMO GmbH, Aachen, Germany

6. Zhenxing Wang Aachen AMO GmbH

   AMO (Germany)

   Affiliation as printed

   AMO GmbH,Aachen,Germany

   AMO GmbH, Aachen, Germany

7. Renato Negra Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics, RWTH Aachen University,Germany

   Chair of High Frequency Electronics, RWTH Aachen University, Germany