Bernhard Klein

Verification and demonstration up to 67 GHz of an on-chip antenna pattern measurement setup

In this paper, an antenna measurement setup built on a commercially available wafer prober is introduced. This setup allows to measure the radiation pattern of on-chip antennas up to 67 GHz. The measurements are performed in the near-field of the antenna under test and therefore a near-field to far-field transformation has been included. This transformation and the entire setup have been verified by a measurement of a standard gain horn antenna and further evaluated by a 2 by 2 patch array. The results show a high agreement with the simulation data.

Room-temperature THz imaging based on antenna-coupled MOSFET bolometer

We report on the design, fabrication and measurements of a new THz sensor concept based on an antenna-coupled MOSFET bolometer for room-temperature passive THz imaging for security and medical-diagnostic applications. The device is fabricated in a 180-nm CMOS SOI technology followed by a post-CMOS MEMS process. In this sensor, the antenna absorbing the THz electromagnetic field is directly coupled to the bolometer for maximum energy collection, whereas its design aims at minimizing its thermal mass as is necessary for fast frame rates. DC measurements before and after the MEMS process as well as thermal time constant and THz antenna measurements are presented.

On-chip fractal bowtie-antenna for 185 GHz to 200 GHz

An on-chip fractal bow-tie antenna to be used as part of a wireless high-speed communication system is presented. The antenna has been succesfully fabricated in the IHP SG13 process and its overall chip area is approximately 1mm2. The influence of fill structures placed on the chip due to fabrication requirements is investigated.

Integrated stacked Vivaldi-shaped on-chip antenna for 180 GHz

A fully integrated, stacked Vivaldi-shaped on-chip antenna design for the frequency range around 180GHz is presented. The antenna has been designed in order to work on the multi-layered IHP 130μm SiGe BiCMOS technology (SG13). Its size is approximately 1mm2 and has been successfully taped-out.

Energy-Efficient Transceivers for Ultra-Highspeed Computer Board-to-Board Communication

Enabling the vast computational and throughput requirements of future high performance computer systems and data centers requires innovative approaches. In this paper, we will focus on the communication between computer boards. One alternative to the bottleneck presented by copper wire based cable-bound communication is the deployment of wireless links between nodes consisting of processors and memory on different boards in a system. In this paper, we present an interdisciplinary approach that targets an integrated wireless transceiver for short-range ultra-high speed computer board-to-board communication. Based on our achieved results and current developments, we will also estimate energy consumption of such a transceiver.

Wideband half-cloverleaf shaped on-chip antenna for 160 GHz – 200 GHz applications

A wideband on-chip antenna for the frequency range of 160GHz to 200 GHz has been developed and taped out in the IHP SG13 process. Simulation results show a maximum absolute gain of 2.2 dBi at 200 GHz. The antenna is designed for high-speed board-to-board communication.

Design of a cloverleaf antenna for an antenna coupled bolometer for room temperature THz imaging

THz-imaging enables promising applications in the medical and security domain, such as detectors for skin cancer or full-body scanners. These new possibilities arise the need for detectors in the THz frequency range. An antenna-coupled bolometer approach in a standard CMOS-SOI process, followed by a MEMS post CMOS process, is suggested to fabricate such a detector. Therefore, in this paper a cloverleaf shaped antenna design for the frequency range 0.5 THz to 1.5 THz is presented. Several design steps are shown together with measurement results regarding the influence of the MEMS process.

A 210-GHz SiGe Balanced Amplifier for Ultrawideband and Low-Voltage Applications

This letter presents a low-voltage balanced amplifier for millimeter-wave radio systems. An ultrawideband of operation is demonstrated from 155 to 210 GHz, which corresponds to a 30% relative bandwidth. Over this band, the system provides 10-dB gain for a power consumption of only 16.8 mW. For the employed 0.8 V voltage supply, the large-signal characterizations demonstrated a maximum iP<inline-formula> <tex-math notation=LaTeX>

Distributed on-chip antennas to increase system bandwidth at 180 GHz

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Design of a wide-bandwidth on-chip antenna for uncooled passive THz imaging

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