THz Detectors and Emitters with On-Chip Antenna aligned on Hyper-Hemispherical Silicon Lenses
- Resource Type
- Conference
- Authors
- Kress, R.; Preuss, C.; Mutlu, E.; Clochiatti, S.; Prost, W.; Weimann, N.
- Source
- 2021 Fourth International Workshop on Mobile Terahertz Systems (IWMTS) Mobile Terahertz Systems (IWMTS), 2021 Fourth International Workshop on. :1-6 Jul, 2021
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Antenna measurements
Resonant frequency
Mobile antennas
Silicon
Robustness
System-on-chip
Oscillators
THz detector
quasi-optical measurement setup
silicon lens
on-chip antenna
- Language
On-chip antennas with radiation towards the substrate are affected by modest coupling performance to a free-space path. (Hyper-)hemispherical silicon lenses can improve the efficiency of quasi-optical emission and detection even at THz frequencies. This approach requires an alignment accuracy in the $\mu\mathrm{m}$-scale at THz frequencies. In this contribution, we report on the benefit of hyper-hemispherical silicon lenses in terms of relaxed alignment accuracy needs. We present the impact of alignment on quasi-optical measurements using indium phosphide resonant-tunneling diodes. The main components of the resulting setups are discussed while the effect of alignment is quantitatively evaluated for both, hemispherical and hyper-hemispherical silicon lenses. Moreover, design rules and concepts for a heterointegrated system are derived on consecutive observations.