InP-Based THz Beam Steering Leaky-Wave Antenna
| Autor: | Andreas Rennings, Daniel Erni, Benedikt Sievert, Ullrich R. Pfeiffer, Besher Khani, Sumer Makhlouf, Peng Lu, Sebastian Dulme, Thomas Haddad, Andreas Stohr, Jose Luis Fernandez Estevez |
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| Rok vydání: | 2021 |
| Předmět: |
Beam diameter
Radiation Materials science Terahertz radiation business.industry Leaky wave antenna Coplanar waveguide Beam steering 020206 networking & telecommunications 02 engineering and technology 01 natural sciences Microstrip 010309 optics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Optoelectronics Electrical and Electronic Engineering Antenna (radio) Photonics business Elektrotechnik |
| Zdroj: | IEEE Transactions on Terahertz Science and Technology. 11:218-230 |
| ISSN: | 2156-3446 2156-342X |
| Popis: | For mobile THz applications, integrated beam steering THz transmitters are essential. Beam steering approaches using leaky-wave antennas (LWAs) are quite attractive in that regard since they do not require complex feeding control circuits because beam steering is simply accomplished by sweeping the operating frequency. To date, only a few THz LWAs have been reported. These LWAs are based on polymer or graphene substrates and thus it is quite impossible to monolithically integrate these antennas with state-of-the-art indium phosphide (InP) based photonic or electronic THz sources and receivers. Therefore, in this paper, we report on an InP-based THz LWA for the first time. The developed and fabricated THz LWA consists of a periodic leaking microstrip line integrated with a grounded coplanar waveguide to microstrip line (GCPW-MSL) transition for future integration with InP-based photodiodes. For fabrication, a substrate-transfer process using silicon as carrier substrate for a 50 m thin InP THz antenna chip has been established. By changing the operating frequency from 230 GHz to 330 GHz, the fabricated antenna allows to sweep the beam direction quasi-linearly from -46 to 42, i.e. the total scanning angle is 88. The measured average realized gain and 3 dB beam width of a 1.5 mm wide InP LWA are ~11 dBi and 10. The paper furthermore discusses the use of the fabricated LWA for THz interconnects. |
| Databáze: | OpenAIRE |
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