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Published on: February 1, 2022
Graphene integrated circuits: new prospects towards receiver realisation.
Mohamed Saeed1, Ahmed Hamed, Zhenxing Wang
1Chair of High Frequency Electronics, Faculty of Electrical Engineering and Information Technology, RWTH-Aachen University, Kopernikusstr. 16, 52074 Aachen, Germany. melsayed@hfe.rwth-aachen.de aghareeb@hfe.rwth-aachen.de.
Researchers developed a new graphene receiver for radio frequency (RF) and millimetre-wave applications. This zero-bias, zero-power device successfully demodulates digital signals, paving the way for advanced Internet-of-Things (IoT) and RFID systems.
Area of Science:
- Electrical Engineering
- Materials Science
- Nanotechnology
Background:
- Graphene's unique electronic properties offer potential for advanced RF applications.
- Direct-conversion receivers are crucial for compact and efficient wireless communication systems.
- Metal-insulator-graphene (MIG) diodes exhibit high performance for RF detection.
Purpose of the Study:
- To demonstrate a fully integrated direct-conversion graphene receiver.
- To leverage the performance of wafer-scale MIG diodes for RF and millimetre-wave frequencies.
- To develop a zero-bias, zero-power receiver suitable for IoT and RFID applications.
Main Methods:
- Fabrication of a direct-conversion receiver frontend using wafer-scale CVD MIG diodes.
- Adaptation of frontend architecture to exploit MIG diode nonlinearity and responsivity.
- Integration with a custom MMIC process backend on a low-cost glass substrate.
Main Results:
- Successful reception and demodulation of complex digitally modulated signals at 2.45 GHz.
- Demonstration of a zero-biased receiver with zero DC power consumption.
- Prototype receiver frontend fabricated on a low-cost glass substrate.
Conclusions:
- The developed design approach enables fully integrated RF and millimetre-wave graphene receivers.
- The prototype receiver shows suitability for Internet-of-Things (IoT) and Radio Frequency Identification (RFID) systems.
- This technology advances low-power, high-performance wireless communication solutions.
