A Quantized Analog Delay for an ir-UWB Quadrature Downconversion Autocorrelation Receiver

A quantized analog delay is designed as a requirement for the autocorrelation function in the quadrature downconversion autocorrelation receiver (QDAR). The quantized analog delay is comprised of a quantizer, multiple binary delay lines and an adder circuit. Being the foremost element, the quantizer consists of a series of comparators, each one...

A Delay Filter for an ir-UWB Front-End

A continuous-time analog delay is designed as a requirement for the autocorrelation function in the quadrature downconversion autocorrelation receiver (QDAR). An eight-order Fade approximation of its transfer function is selected to implement this delay. Subsequently, the orthonormal form is adopted, which is intrinsically semi-optimized for...

Ka-Band AlGaN/GaN HEMT high power and driver amplifier MMICs

In this paper the MMIC technology, design and characterization of a high power amplifier and driver amplifier MMIC at 30 GHz in AlGaN/GaN HEMT technology are presented. The MMICs are designed using CPW technology on a 390 um thick SiC substrate. The measured small-signal gain of the driver is 14 dB at 28.5 GHz and the measured output power is 28...

60 GHz GaAs MMIC mixers with integrated LO buffer

Using the 0.15 um GaAs mHEMT process from WIN semiconductors, two 60 GHz down-conversion mixers have been designed, processed and measured. Both designs include a LO buffer amplifier to allow for a reduced external LO power level. With an LO power of +10 dBm, the measured RF input match is better than -15 dB at 60 GHz and the conversion loss is...

Micro digital sun sensor: System in a package

A novel micro Digital Sun Sensor (μDSS) is under development in the frame of a micro systems technology (MST) development program (Microned) from the Dutch Ministry of Economic Affairs. Use of available micro system technologies in combination with the implementation of a dedicated solarcell for power supply and a wireless link for data...

Novel organic SMD package for high-power millimeter wave MMICs

In this paper a novel low-cost SMD package for high-power MMICs is presented. Due to the special design this package has a very low thermal resistance and low parasitic ground inductance. 3D EM simulations of a packaged through-line correspond well with measurements. Measurement results of a 1 Watt 40 GHz HPA before and after packaging are...

Fully-integrated core chip for X-band phased-array T/R modules

This paper discusses the final result of development effort leading to a fully-integrated phased-array core chip. The MMIC is especially useful for active electronically-steered arrays, and integrates a full functionality including low-noise amplifier (LNA), a medium-power amplifier (MPA) matched to common high-power amplifiers (HPA) and all...

On the Stability of MMIC+s Using Transistors with Inductive Source Feedback

This paper describes potential stability problems occurring in transistor stages with inductive source feedback. These problems occur at very high frequencies, where modelling of passive components is far from trivial. Due to the increase in maximum operating frequency of submicron pHEMT transistors, this problem is recently attracting attention...

Substrate noise generation in complex digital systems: Efficient modeling and simulation methodology and experimental verification

More and more system-on-chip designs require the integration of analog circuits on large digital chips and will therefore suffer from substrate noise coupling. To investigate the impact of substrate noise on analog circuits, information is needed about digital substrate noise generation. In this paper, a recently proposed simulation methodology...

Towards developing a coherent healthcare information infrastmcture

A standard is a set of agreements between all parties involved. Delivering healthcare is a matter of co-operation: healthcare can only be delivered in a responsible fashion when parties involved comply to standards. This becomes evident when a healthcare information infrastmcture is under development. The authors dehver a comprehensive...

Photonic chip for steering a four element phased array antenna

A polarization independent photonic integrated circuit for phase steering of a four element phased array antenna has been fabricated on InP. The chip is extremely small and suitable for packaging

Photonic Integrated Circuits for Phased-Array Beamforming

Photonic integration is very promising to bring down volume and weight of phased-array beamforming networks. In addition, photonics allows for increased functionality for wide bandwidth systems. In this paper we demonstrate the feasibiÌity of phase and amplitude control of a 16-elernent phased-array antenna with a single InP integrated circuit....

Photonic integrated circuits for radar beam control

Photonic integrated circuits have the potential to reduce the volume and weight of optical beamforming networks for phased-array radar antennae by more than one order of magnitude, and will drastically reduce packaging and interconnection costs by integrating subcircuits, consisting of many components, on a single chip. Most work on optical...

A 300°C Dynamic-Feedback Instrumentation Amplifier

A high-temperature instrumentation amplifier that uses dynamic feedback is presented. It realizes dynamic feedback by means of a rotating chain of resistors to compensate for resistor mismatches. An 11x dynamic-feedback instrumentation amplifier has been integrated in a standard junction-isolated 1.6-μm CMOS process and realizes an average gain...

Automatisering bij de vervaardiging van montageplaten met gedrukte bedrading

MontagepIaten met gedrukte bedrading voor het monteren van geïntegreerde schakelingen bevatten in het algemeen een gecompliceerd geleiderpatroon. Bij de vervaardiging van dergelijke montagepIaten wordt veelal gebruik gemaakt van een fotografisch negatief. Het maken van het negatief is tamelijk tijdrovend. De montageplaten moeten verder in de...