A5033572596- Radio Frequency Integrated Circuit Design
- Advancements in PLL and VCO Technologies
- Advanced Power Amplifier Design
- Electromagnetic Compatibility and Noise Suppression
- Analog and Mixed-Signal Circuit Design
- Light effects on plants
- Quantum Information and Cryptography
- Plant Parasitism and Resistance
- Wireless Body Area Networks
- Bluetooth and Wireless Communication Technologies
- Quantum and electron transport phenomena
- Microwave Engineering and Waveguides
- Mechanical and Optical Resonators
- Advanced DC-DC Converters
- Advanced MIMO Systems Optimization
- Semiconductor Lasers and Optical Devices
- Plant Genetic and Mutation Studies
Ostschweizer Fachhochschule OST
2024
Interstate University of Applied Sciences of Technology Buchs
2020
STMicroelectronics (Switzerland)
2010
Linz Center of Mechatronics (Austria)
2006-2007
Johannes Kepler University of Linz
2006
Infineon Technologies (Germany)
2003-2004
The new generation mobile communication systems using spectrum efficient linear modulation schemes (QPSK, 8PSK, QAM) need power amplifiers in the transmission path to have good ACPR and EVM values. Linearization methods can be used increase linearity of (PA). However, it is not reasonable use complicated, consuming high cost systems. This paper presents a digital predistortion implementation for WCDMA signals an FPGA (Field Programmable Gate Array) as DSP investigates application this system...
A 0.13μm CMOS fully digitally controlled oscillator is presented. Running at 2GHz, it draws 3.2mA from a 2.5V supply and has phase noise of -118dBc/Hz 1MHz offset, as required for UMTS oscillators. tuning range 3.45 to 4.45GHz achieved by using binary-weighted thermometer-coded switchable capacitors, which allow maximum frequency step 200kHz
A key issue in proceeding the digitization of phase-locked loops (PLLs) is realization proper phase detectors digital domain. This paper presents simulative analysis properties and requirements for time-to-digital converters (TDCs) used comparison digitized fractional-N modulators with two-point modulation. Effects due to quantization TDC on frequency synthesis as well GSM modulation quality are considered, defining a transmitter
The new generation mobile communication systems using spectrum efficient linear modulation schemes (QPSK, 8PSK, QAM) need power amplifiers in the transmission path to have good ACPR and EVM values. Linearization methods can be used increase linearity of (PA). However, it is not reasonable use complicated, consuming high cost systems. This paper presents a digital predistortion implementation for WCDMA signals an FPGA (field programmable gate array) as DSP investigates application this system...
A low-energy 2.4GHz RF transceiver supporting 1Mb/s Gaussian Frequency-Shift Keying modulation and designed to run on a 1.5V battery is implemented in standard 0.18µm CMOS technology. The integrated DC-DC converter can provide up 100mA an external load besides the current required by transceiver. transmitter at 0dBm nominal output power 11.9mA. receiver draws 11.4mA presents sensitivity of −82.5dBm bit-error rate 0.1% with on-chip delivering total 120mA. able operate supply voltage as low 0.8V.
In recent years, more attention has been paid to cannabis from both medical and political points of view. This study investigates the influence 5 different light spectra on active substance content in THC-poor hemp Alessia chemotype II variety. The focus is comparing conventional growing under metal halide lamps with high-pressure sodium (HPS) vapor regard LED lighting modules. Growing was carried out 10 boxes controlled mostly identical conditions for all boxes. photoperiod during...
In almost every wireless RF application, a phase locked loop (PLL) is required. Digital signal processing especially for PLLs in CMOS technology increasingly used instead of conventional analog to improve reliability, reduce power consumption, and allow re-configurability. This paper presents simulative analysis an all digital PLL (ADPLL) with two bit frequency discriminator (FD) the feedback path. Effects on in-band noise performance due sampling rate are treated. Furthermore, theoretical...
Despite their inability to provide distance or angular information, single-channel continuous-wave radar systems are widely used measure vital parameters. Their popularity arises from the simplicity of required components, low demands on sampling rate and processing effort, costs. To obtain health data such as respiration rates, heart variability, change signal phase due displacement body surface is measured. Typical models in literature only consider relevant information assume that behaves...
We propose a scheme for switchable coupling between several Cooper-pair boxes in the charge regime. The switch is embodied SQUID element contained center conductor of transmission-line resonator. Altering flux bias through allows changing effective resonator length. Thus position nodes and anti-nodes relevant eigenmodes changes leads to variable interaction strength qubit cavity vacuum field. For coupled qubits dispersive. An example application this generation multipartite entangled states...
Fully digital phase locked loops (PLLs) for wideband modulation set tough requirements on the digitally controlled oscillator (DCO). The frequency step size should be small while linear tuning range very large. To find a solution both requirements, oversampling at DCO can applied. This relaxes oscillator, but needs additional high speed circuitry realization. paper describes detailed of an circuit UMTS modulation. A noise shaping method is proposed, which enables realization compliant...
The first CMOS based fully digitally controlled oscillator suitable for GSM/EDGE and UMTS transmitter is presented. Drawing an extremely low current in order to achieve the phase noise performance sufficient both communication systems it highly terminal applications. A coarse tuning range from 3.25 4.25 GHz achieved by a combination of binary weighted thermometer coded switchable capacitors which allow maximum frequency step 250 KHz. consumption excellent performances make this topology...