A. Tessmann
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400 GHz 8×1 Transmitter and Receiver Front-Ends With Metastructured On-Chip Antennas Open
660
Hybrid Integration of a Beam-Steering Leaky-Wave Antenna and Power Amplifier MMIC Using UPD Printing in 220 to 325 GHz Range Open
This paper presents the first hybrid-integration assembly of a power amplifier (PA) monolithic microwave integrated circuit (MMIC) and a beam-steering leaky wave antenna (LWA) using an ultra-precise deposition (UPD) printed coplanar wavegu…
Analysis of Weather-Related Link Availabilities for Fiber-Integrated THz-Wireless Transmission Systems Open
We analyze the weather-related link availabilities of high-capacity THz-wireless transmission systems, focusing on fiber-integrated point-to-point links in the lower THz frequency range around 300 GHz. First, we discuss latest component te…
Comparison of electronic and optoelectronic signal generation for (sub-)THz communications Open
In recent years, the significance of terahertz (THz) and (sub-)THz communications has grown substantially due to its promising trade-off between higher capacity compared to microwave-based communication and better resilience against weathe…
Qualification of the attitude control system of the E-band CubeSat EIVE Open
The 6U CubeSat EIVE was developed for the verification of an E-band link from space to ground. Establishing such a link presents challenging requirements for the development of an attitude control system of a CubeSat. To verify the functio…
THz Communications and the Demonstration in the ThoR–Backhaul Link Open
554
Qualification of the Attitude Control System of the E-band CubeSat EIVE Open
The 6U CubeSat EIVE was developed for the verification of an E-band link from space to ground. Establishing sucha link presents challenging requirements for the development of an attitude control system of a CubeSat. To verify thefunctiona…
Lessons Learned and First Results of the E-Band CubeSat EIVE Open
The 6 Unit CubeSat EIVE was developed to to host a novel high-speed E-band transmitter payload. Challenging aspects for reliable and demanding satellite architectures were revealed during development and operations. Reliable communication …
Broadband 400 GHz On-Chip Antenna With a Metastructured Ground Plane and Dielectric Resonator Open
9025
16-Way Ka-Band Power Combiner Using Novel Waveguide Transitions Open
3074
Broadband 100-W <i>Ka</i>-Band SSPA Based on GaN Power Amplifiers Open
In this letter, we report on the realization of a two-stage 16-way solid-state power amplifier (SSPA) in the Ka-band. To this end, we describe the design of a high-power amplifier (HPA) in a 100-nm gallium nitride (GaN) process and its int…
High-Gain 670-GHz Amplifier Circuits in InGaAs-on-Insulator HEMT Technology Open
728
670-GHz Cascode Circuits Based on InGaAs Metamorphic High-Electron-Mobility Transistors Open
173
Hybrid Beam-Steering OFDM-MIMO Radar: High 3-D Resolution With Reduced Channel Count Open
We report on the realization of a multichannel imaging radar that achieves uniform 2-D cross-range resolution by means of a linear array of a special form of leaky-wave antennas. The presented aperture concept enables a tradeoff between th…
Broadband 400-GHz InGaAs mHEMT Transmitter and Receiver S-MMICs Open
The modeling, design, and experimental evaluation of both a 400-GHz transmitter and receiver submillimeter-wave monolithic integrated circuit (S-MMIC) is presented in this article. These S-MMICs are intended for a radar-based system in the…
View article: Photonic-Electronic Ultra-Broadband Signal Processing: Concepts, Devices, and Applications
Photonic-Electronic Ultra-Broadband Signal Processing: Concepts, Devices, and Applications Open
Combining photonic integrated circuits (PIC) with millimeter-wave electronics opens novel perspectives in generation and detection of ultra-broadband signals with disruptive potential for a wide variety of applications. Here, we will give …
Broadband 300-GHz Power Amplifier MMICs in InGaAs mHEMT Technology Open
In this article, we report on compact solid-state power amplifier (SSPA) millimeter-wave monolithic integrated circuits (MMICs) covering the 280–330-GHz frequency range. The technology used is a 35-nm gate-length InGaAs metamorphic highele…
ULTRA-HIGH RESOLUTION IMAGING OF FACADES AND VERTICAL INFRASTRUCTURE BY CARBORNE SAR AND AIRBORNE CSAR Open
In this paper we propose a strategy to focus ultra-high resolution single channel carborne SAR and airborne circular SAR (CSAR) data to image facades and vertical infrastructure. We illustrate the related theoretical background and the des…
View article: Wireless Terahertz Communications
Wireless Terahertz Communications Open
Over the past years, interest in wireless THz communications with so-called T-waves has tremendously increased [1]-[4], because the large carrier frequencies in the range 0.2 THz to 0.9 THz support wide signal band-widths and consequently …
Wireless THz link with optoelectronic transmitter and receiver Open
Photonics might play a key role in future wireless communication systems that operate at terahertz (THz) carrier frequencies. A prime example is the generation of THz data streams by mixing optical signals in high-speed photodetectors. Ove…
View article: THz-to-Optical Conversion in Wireless Communications Using an\n Ultra-Broadband Plasmonic Modulator
THz-to-Optical Conversion in Wireless Communications Using an\n Ultra-Broadband Plasmonic Modulator Open
Future wireless communication networks have to handle data rates of tens or\neven hundreds of Gbit/s per link, requiring carrier frequencies in the\nunallocated terahertz (THz) spectrum. In this context, seamless integration of\nTHz links …
View article: Wireless Transmission at 0.3 THz Using Direct THz-to-Optical Conversion at the Receiver
Wireless Transmission at 0.3 THz Using Direct THz-to-Optical Conversion at the Receiver Open
We report a THz wireless link at 0.2885 THz which is embedded in a photonic network. An ultra-broadBand plasmonic modulator directly converts the THz signal to the optical domain. We transmit QPSK data with line rates up to 50 Gbit/s.
View article: Terahertz-to-Optical Conversion Using a Plasmonic Modulator
Terahertz-to-Optical Conversion Using a Plasmonic Modulator Open
We show a THz plasmonic modulator with flat frequency response from 40 MHz to 0.325 THz and employ it to demonstrate THz-to-optical conversion of a 30 Gbit/s signal on a 0.294 THz carrier.
View article: Low noise amplifiers for MetOp-SG
Low noise amplifiers for MetOp-SG Open
We present low-noise amplifiers (LNA) that have been developed in the framework of two pre-qualification ESA projects for frequencies between 54 and 229 GHz for the METOP-SG satellite program. The main goal of these satellites is water vap…