Journal article · Ahead of Print article
System Integration and Packaging of a Terahertz Photodetector at W-Band
Department of Electrical Engineering, Technical University of Denmark1
Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark2
Technische Universität Darmstadt3
Eindhoven University of Technology4
National Centre for Nano Fabrication and Characterization, Technical University of Denmark5
This paper presents the system integration and packaging of a photodetector at W-band (75-110 GHz) for terahertz (THz) communications. The ErAs:In(Al)GaAs photoconductor and its feeding network based on semi-insulating indium phosphide (InP) substrate are introduced. The design of the bias-tee at W-band is described and the effect of parasitic modes is discussed.
Besides, the transition using E-plane probe between a W-band rectangular waveguide (WR-10) and a coplanar waveguide (CPW) is illustrated. The bias-tee as well as the E-plane probe transition are based on high-resistivity silicon (Si) substrate where wire bonding bridges are added on the top following the CPWs in order to restrict parasitic modes.
The integration approach and the packaging structure are addressed. The proposed bias-tee and the E-plane probe transition including the WR-10 rectangular waveguide are fabricated, integrated, and measured. The measurement is carried out on-wafer in a back-to-back configuration and the results are presented.
The assembly of the fully-packaged photodetector is demonstrated and a THz heterodyne communication system is implemented which validates the proposed system integration and packaging approach of the photodetector at W-band.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2019 |
| Pages: | 1486-1494 |
| ISSN: | 21563985 and 21563950 |
| Types: | Journal article and Ahead of Print article |
| DOI: | 10.1109/TCPMT.2019.2928053 |
| ORCIDs: | Dong, Yunfeng , Zhurbenko, Vitaliy , Hanberg, Peter J. , Johansen, Tom Keinicke , 0000-0002-8966-9506 and 0000-0003-0818-1865 |
Bias-Tee Coplanar waveguide (CPW) E-plane probe Integration Packaging Photodetector Rectangular waveguide Terahertz (THz) Wire bonding
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