ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605)
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About multi-stable bipolar structure approximation by system of virtual bistable semi-conductor elements
- Trang 392-395
A new method of modeling of bipolar inhomogeneous (by the type of conduction) semiconductor structures containing N>3 electron-hole junctions by the system of virtual bistable elements is suggested. The actual problem is connected with the possibility of creating multistable elements on the basis of such structures, known as polystores, the state of electroconductivity of which is controlled by ex......
#Mathematical model #Plasma applications #Current density #Optical bistability #Switches #Equations #Optical control #Laser modes #Information technology #Productivity
On pattern formation in a class of cellular neural networks
- Trang 258-262
The dynamics of a class of cellular neural networks (CNNs) related to pattern formation is investigated in the central linear part using the decoupling technique based on discrete spatial Fourier transform. The influence of the cell order and template neighborhood is discussed as well.
#Pattern formation #Intelligent networks #Cellular neural networks #Eigenvalues and eigenfunctions #Admittance #Differential equations #Stability #Electronic mail #Fourier transforms #Coupling circuits
Static-induction transistor for very-high-speed ICs
- Trang 404-407
The structure and model of a static-induction transistor (SIT) with Schottky barrier for very-high-speed ICs have been developed. Simulation analysis results of IC logic elements based on complementary SITs is provided. The prospects of VLSI realization based on complementary SITs is discussed.
#Voltage #Schottky barriers #Very large scale integration #Doping #Tunneling #Ballistic transport #Logic #Frequency #Semiconductor process modeling #Temperature dependence
A reconfigurable data-flow architecture for a class of image processing applications
- Trang 460-463
This paper aims to device an architecture which uses the capability of asynchronous concurrency of the data flow architecture as well as spatial parallelism of SIMD machines for a class of image processing applications using reconfigurable processing elements (RPE). Overall processing speed is enhanced by: (a) concurrent functioning of the RPE; and (b) replacing software execution of signal proces......
#Image processing #Signal processing algorithms #Concurrent computing #Parallel processing #Computer architecture #Signal processing #Hardware #Data flow computing #Application software #Field programmable gate arrays
Novel internal antenna for cellular phones
- Trang 344-345
The use of cellular phones gives rise to the problem of hand-held transceiver radiation in the direction of a user's head. This problem can be partially solved by using an antenna with a radiation pattern decreasing the electromagnetic radiation in the user's head direction and increasing it in the opposite direction. The suggested antenna is a combination of a patch antenna and two short dipoles.......
#Cellular phones #Dipole antennas #Directive antennas #Frequency #Microstrip antennas #Slot antennas #Slabs #Antenna radiation patterns #Electromagnetic radiation #Permittivity
Limited signals forming with the given accuracy in the systems under disturbances
- Trang 378-381
For the solving of various control tasks, the problem connected with formation of limited signals with acceptable properties often appears. We have similar problems for the realization of some control systems, and also for the production of signals which have informational characteristics intended for the appropriate information provision for various systems. Thus, it is very important that the re......
#Control systems #Control system synthesis #Signal synthesis #Signal resolution #Problem-solving #Vectors #Nonlinear control systems #Constraint theory #Jacobian matrices
A CMOS OTA-C channel-select filter for mobile receiver
- Trang 50-53
A low-power fifth-order 100 kHz CMOS Gm-C filter intended for baseband mobile communication is presented. The operational transconductance amplifier (OTA) used in this filter has a measured input linear range up to 2 Vpp. The filter fabricated in 1.5 /spl mu/m CMOS technology dissipates 600 /spl mu/W from a single 3.3 V supply.
#Filters #Voltage #Transconductance #Baseband #Operational amplifiers #CMOS analog integrated circuits #CMOS technology #GSM #Feedback loop #Informatics
A new type of universal functional block suitable for circuits derived by adjoint transformation
- Trang 74-77
This paper describes a new type of universal functional block called U4TIA suitable for implementation all the known types of amplifiers (VOA, COA, OTA, TIA) and their adjoined counterparts. The first part of this paper deals with the basic structure of U4TIA. A simple implementation by using conventional TIA or current-conveyors (CCII) is shown. The second part is devoted to the description of cu......
#Voltage #Operational amplifiers #Equivalent circuits #Circuit simulation #SPICE #Analog circuits #Current mode circuits #Circuit topology #Passive networks #Active circuits
Design and implementation of high-speed Reed-Solomon decoder
- Trang 146-149
This paper presents a new VLSI design and implementation of a high-speed three-stage pipelining Reed-Solomon decoder based on the modified Euclidean algorithm. A new multiplier and inversion for GF(2/sup m/) are implemented on the composite field GF(2/sup 2n/) (m=2n), which offers lower hardware requirements compared to standard Mastrovito multiplier and ROM respectively. By setting the new initia......
#Reed-Solomon codes #Decoding #Hardware #Delay #Very large scale integration #Algorithm design and analysis #Pipeline processing #Read only memory #Clocks #Throughput
Synthesis of high-frequency wave filters and transformers for communications systems
- Trang 320-325
The new theory of wave filters and their synthesis is presented for the first time on the basis of a modeling method using circuit models made exclusively from the first order phase parts. The method is applicable for the synthesis of the filters on transmitting line pieces and may be used for the design of microwave, acoustic, optical and mechanical filters with Butterworth, Chebyshev, elliptic a......
#Transformers #Microwave filters #Optical filters #Filtering theory #Circuit synthesis #Microwave theory and techniques #Frequency conversion #Network synthesis #Communication systems #Chebyshev approximation