rf-radio frequency- design articles



Contents List of Figures List of Tables Contributing Authors Foreword Introduction 1 Motivation, context and objectives Georges Gielen, Piet Wambacq, John FM Gerrits 2 Analysis and simulation of RF subsystems Jaijeet Roychowdhury 2.1 Steady-state analysis 2.1. 1 2.1

An image domain approach for the design of RF pulses in transmit SENSE
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Transmit SENSE has recently been introduced by Katscher et al.(1) as a method of multidimensional selective excitation using multiple coils, each driven by an independent waveform. In a manner analogous to SENSE imaging, a reduced excitation k-space

RF Design of a High-frequency RFQ Linac for PIXE Analysis
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Protons with an energy of few MeV are commonly used for Ion Beam Analysis of materials, in particular with the Proton Induced X-ray Emission technique (PIXE). Because of its non- damaging character, PIXE is used in a variety of fields, in particular for the diagnosis of

Design optimization and implementation for RF energy harvesting circuits
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The objective of this research is to propose a novel circuit design that enables wireless energy harvesting, which is a new paradigm that scavenges energy from radio frequency ( RF ) electromagnetic radiation. Compared to other commonly observed alternative energy

On the design of disc-loaded waveguides for RF separators
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Propri t litt raire et scienti´Čüque r serv e pour tous les pays du monde. Ce document ne peut être reproduit ou traduit en tout ou en partie sans Vautorisation crite du Directeur g n ral du CERN, titulaire du droit dauteur. Dans les cas appropri s, et s il s agit dutiliser

Low-level RF control system design and architecture
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Low-level RF (LLRF) control hardware and its embedded programming plays a pivotal role in the performance of an accelerator. Modern designs implement most of the signal processing in the digital domain. This reduces the size and cost of the hardware, but places

Design of RF -choke inductors using core geometry coefficient
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This paper presents a derivation of the core geometry coefficient Kg for the design of RF - choke inductors and a design example. The design example indicates that the dc winding loss is the dominant component of the total power loss of RF -choke inductors. Additionally

On the design and Fabrication of Electrostatic RF MEMS Switches
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ABSTRACT A surface micromachined capacitive switch has been designed and fabricated on a glass substrate. The switch is constructed of a thin metallic membrane crossing over an electroplated coplanar waveguide transmission line. The electrostatic actuation is utilized as

RF DESIGN STUDIES OF A 1.3 GHz NORMAL CONDUCTING CW BUNCHER FOR THE EUROPEAN XFEL
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A CW upgrade of the European XFEL is under consideration, and CW electron injectors are under RD at DESY. One of the CW injector solutions is a LCLS-II like injector based on a normal conducting VHF-band gun and an L-band buncher. RF design of the 1.3 GHz normal

RF small signal design using two-port parameters
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It has also been assumed that a suitable transistor or other active device for the task at hand has been selected, and that two-port parameters are available for the frequency and bias point which will be used. Device selection will not be covered as a separate topic in this Emerging wireless communications infrastructures employ increasingly complex algorithms and pratocols to optimize the use of bandwidth, minimize the cost, and enhance the portability of wireless personal communication systems. A majority of modern

An Overview: RF Design of Fast Locking Digital Phase Locked Loop
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Phase locked loop (PLL) is a control system that generates a signal having a fixed relation with the phase of a reference signal. This system responds to both frequency and phase of the input signals, automatically raising or lowering the frequency of a controlled oscillator Computational intelligence has been an astounding success in the engineering domain, particularly in electronic design . Over the last two decades, improved techniques have raised the productivity of designers to a remarkable degree. Indeed, in the areas of digital

Joint multishift and Magnitude Least Squares (msMLS) algorithm for time efficient low SAR and low peak RF pulse design
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Target Audience MRI physicists and engineers. Purpose During the last decade, several numerical methods for RF pulse design have been developed. Recently, the magnitude least squares1 (MLS) and the multi-shift conjugate gradient least squares2 (msCGLS)

Design of RF based speed control system for vehicles
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Nowadays people are driving very fast; accidents are occurring frequently, we lost our valuable life by making small mistake while driving (school zone, hills area, and highways). So in order to avoid such kind of accidents and to alert the drivers and to control their vehicle

A guide for on-chip inductor design in a conventional CMOS process for RF applications
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A 3.8 nH inductor with a Q of 6.1 was manufactured and used in the design of a VCO for a 1.8 GHz application. The design served to test the performance of the VCO and also demonstrated the applicability of the inductors. The measured device phase noise equals

Antenna design and RF layout guidelines
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Antenna design and RF layout are critical in a wireless system that transmits and receives electromagnetic radiation in free space. The wireless range that an end-customer gets out of an RF product with a current-limited power source such as a coin-cell battery depends

Rf Coupler Design for the TRIUMF ISACII Superconducting Quarter Wave Resonators
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An rf Coupler for the ISAC-II medium beta (β= 0.064 and 0.074) superconducting quarter wave resonators was designed and tested at TRIUMF. The main goal of this development was to achieve stable operation of superconducting cavities at high acceleration gradients

Design of RF feedthroughs in zero-level packaging for RF MEMS implementing TSVs
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This paper reports on the design , manufacturing and RF characterization of a zero-level packaging for RF -MEMS devices implementing TSVs (Through-Silicon Vias) and metal bonding. Coplanar interconnection feedthroughs have been modelled and designed for low

RF Design and Predicted Performance for a Future 34-Meter Shaped Dual-Reflector Antenna System Using the Common Aperture XS Feedhorn
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The Networks Consolidation Program (NCP) will include at least two new 34-meter high- aperture-efficiency shaped dualreflector antennas. This report presents the results of the geometric optics design which determines the dual reflector coordinates of the system and
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