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Frankfurt (Oder), Germany

Schmalz K.,Ihp Microelectronics | Neumaier P.,German Aerospace Center | Borngraber J.,Ihp Microelectronics | Debski W.,Silicon Radar | And 2 more authors.
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

A 245 GHz sensor system for gas spectroscopy is presented, which includes a SiGe transmitter (TX) and a receiver (RX). The integrated local oscillators of TX- and RX-chips are controlled by two external phase-locked loops (PLL), whose reference frequencies are swept with constant frequency offset. The reference frequency of the TX-PLL is modulated for frequency-modulation spectroscopy. The performance of the sensor system is demonstrated by the 2f absorption spectrum (second harmonic detection) of methanol. © 2014 IEEE. Source

Glisic S.,Silicon Radar | Elkhouly M.,Ihp Microelectronics | Meliani C.,Ihp Microelectronics
European Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuMIC 2013: 8th European Microwave Integrated Circuits Conference

A fully integrated differential power amplifier, produced in 130 nm SiGe process for 60 GHz application is presented. The PA features one-stage cascade topology with measured gain of 17.5 dB. The measured differential 1dB compression point (P1dB) at the output is 12.7 dBm, and the measured saturated power is 13.3 dBm. Power consumption at P1dB is 57.1 mW. The measured peak power-aided efficiency is 32.9%. To the best knowledge of authors, this is a record value for 60 GHz PAs in SiGe and CMOS. © 2013 EuMA. Source

Schmalz K.,Ihp Microelectronics | Borngraber J.,Ihp Microelectronics | Kaynak M.,Ihp Microelectronics | Winkler W.,Silicon Radar | And 4 more authors.
IEEE Microwave and Wireless Components Letters

A highly sensitive 120 GHz integrated dielectric sensor in SiGe BiCMOS with back-side etching is presented. The sensor consists of a bandpass filter using a planar resonator, a 120 GHz VCO at the input, and a power detector at the output. The sensitivity of the stand-alone resonator and the sensor was tested by measuring the change in the detector output voltage and the shift in the frequency response of the resonator due to a dielectric sample placed over the resonator. Simulated and measured performance of the developed device are presented and discussed. © 2001-2012 IEEE. Source

Schmalz K.,Ihp Microelectronics | Borngraber J.,Ihp Microelectronics | Debski W.,Silicon Radar | Elkhouly M.,Ihp Microelectronics | And 4 more authors.
Technical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC

A 245 GHz transmitter (TX) array with an integrated antenna-array for a gas spectroscopy system has been realized, which consists of a push-push VCO with a 1/64 frequency divider, power amplifiers, frequency doublers, and on-chip antennas with localized backside etching. The TX-frequency is tunable in the range from 238 GHz to 252 GHz. The TX-array is fabricated in 0.13 μm SiGe:C BiCMOS technology with fT/fmax of 300GHz/500GHz. Its estimated output power is 7 dBm at 245 GHz, and the EIRP reaches 18 dBm at 245 GHz. The 245 GHz spectroscopy system includes a TX and a receiver in SiGe. The sensitivity of this spectroscopy system is demonstrated by the high-resolution absorption spectrum of methanol and will be increased further by this TX-array. © 2014 IEEE. Source

Schmalz K.,Ihp Microelectronics | Borngraber J.,Ihp Microelectronics | Debski W.,Silicon Radar | Neumaier P.,German Aerospace Center | And 3 more authors.
Electronics Letters

A 500 GHz system for gas spectroscopy is presented, which includes an integrated SiGe 4 × 1 transmitter (TX) array, a Golay cell as a detector and a 1.9 m-long gas absorption cell. The local oscillator (LO) of the TX array is controlled by an external phase-locked loop, whose reference frequency is swept. The four TX branches involve frequency quadruplers (x4). The TX branches are fed by a 120 GHz power division network, which is connected to the LO. The estimated radiated output power of the TX array is -7 dBm at 500 GHz. The absorption spectrum of gaseous methanol is shown for 494-500 GHz. © The Institution of Engineering and Technology 2015. Source

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