Andreas Trasser

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This paper presents a 64 to 81 GHz PLL realized in a low-cost, 80 GHz HBT technology. The circuit consists of a wide tuning range VCO, a push-push frequency doubler and an analog PLL (divide by 32 frequency divider, phase detector and active loop filter) for phase locking. The measured phase noise is -106 dB/Hz at 1 MHz offset. Output power is -2.5 dBm at(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 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, 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)
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, the authors present a fully integrated VCO with 32% tuning range centered at 38.9 GHz. The VCO was designed using a commercially available, inexpensive 0.8 µm Si/SiGe HBT technology with f T and fmax of 80 and 90 GHz, respectively. It consumes 195 mW DC power and provides an output power of more than 5 dBm. A phase noise of-93 dBc/Hz at 1(More)
Two compact SiGe HBT low noise amplifiers for ultra-wideband (UWB) applications are presented. The measured noise figure of the first approach is 2.4dB at 7GHz and below 2.9dB in the UWB bandwidth from 3.1GHz up to 10.6GHz. The circuit delivers 17.3dB peak gain with gain variations of less than 1.6dB within the entire band. The measured input 1-dB(More)
A high-performance 110 GHz frequency quadrupler implemented in 0.13-&#x03BC;m BiCMOS process is presented. The designed circuit is to be employed in an FMCW imaging radar system and is based on a cascade of two Gilbert cells with tuned loads connected as squarers. The differential input signal that is used for validation of the realized quadrupler is(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)