Andreas Trasser

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This paper presents a 64-84-GHz phase-locked loop (PLL) realized in a low-cost 80-GHz HBT technology. The circuit consists of a wide tuning-range voltage-controlled oscillator, a push-push frequency doubler, a divide-by-32 frequency divider, a phase detector and an active loop filter. The measured phase noise at 1-MHz offset is -106 dBc/Hz. The output power(More)
In this paper, the authors present a VCO/doubler IC with an output frequency near the maximum frequency of oscillation of the technology used. The IC operates from 64 GHz to 86 GHz with a maximum output power of -3.4 dBm at 79 GHz. It is designed using an 0.8 ¿m SiGe HBT technology with f<sub>T</sub>/f<sub>max</sub> of 80/90 GHz. The high frequency of(More)
The authors have demonstrated a fully integrated receiver frontend addressing the ISM-Band at 24 GHz utilizing a standard SiGe HBT MMIC process with a relaxed emitter scaling of 1.2 /spl mu/m, for the first time. Extremely compact circuit design and layout techniques are applied to a mature Si/SiGe technology, resulting in a low-cost integrated circuit(More)
In this paper, a 60 GHz system demonstrator for multi-Gb/s, short-range, line-of-sight communications is presented. The system utilizes a highly efficient receiver architecture with phase noise suppression capability, which performs carrier synchronization in the analog domain, eliminating the need for high speed, high precision analog-to-digital(More)
This paper describes a compact Doppler sensor consisting of a SiGe MMIC and patch antennas for transmitting and receiving. The MMIC has a differential oscillator operating at 31-32 GHz and a single balanced Gilbert cell mixer. For the differential oscillator lumped elements are used and the Gilbert cell mixer serves two purposes. First it generates the(More)
In this paper an impulse-radio ultra-wideband (IR-UWB) hardware demonstrator is presented, which can be used as a radar sensor for highly precise object tracking and breath-rate sensing. The hardware consists of an impulse generator integrated circuit (IC) in the transmitter and a correlator IC with an integrating baseband circuit as correlation receiver.(More)
In this paper, we present a fully integrated differential, compact frequency divider with a divide ratio of 32. The circuit utilizes a Si/SiGe 0.25 mum BiCMOS technology and operates beyond 75 GHz. The divider has a die area of 655 mum times 475 mum and consumes 202 mA at 5 V supply voltage. The frequency divider consists of the first stage of a dynamic(More)
We present the design, implementation and measurement of a low noise amplifier (LNA) in a low cost 0.8 mum SiGe heterojunction bipolar technology (HBT). The measured noise figure is between 2.1 dB and 2.6 dB in the FCC-allocated bandwidth for ultra-wideband (UWB) systems. The circuit delivers 19.6 dB peak gain with gain variations of 1.3 dB within the(More)
The authors have demonstrated an integrated downconverter addressing the ISM-band at 24 GHz using a standard SiGe HBT MMIC process with an effective emitter width of 0.5 /spl mu/m. Extremely compact circuit layout and transistor structure optimization are applied to a mature Si/SiGe technology, resulting in a low-cost integrated circuit enabling(More)