ICCSC'02. 1st IEEE International Conference on Circuits and Systems for Communications. Proceedings (IEEE Cat. No.02EX605)
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
A 3.3 V linear fully balanced CMOS operational transconductance amplifier for high-frequency applications
- Trang 38-41
This paper describes a simple CMOS technique for realizing a linear, voltage tunable operational transconductance amplifier (OTA). The proposed circuit has been developed and simulated using the MOS 0.5 /spl mu/m HP AMOS14TB process parameters with all MOS transistors operating in saturation. SPICE simulations show that the total harmonic distortion (THD) at 1.7 V/sub pp/ is less than 0.3% with dy......
#Transconductance #Operational amplifiers #Circuit simulation #CMOS technology #Voltage #Tunable circuits and devices #MOSFETs #SPICE #Total harmonic distortion #Dynamic range
Perspectives of use of three-layer ferrite-dielectric waveguides for creation of integrated antennas with narrow beam
- Trang 354-357
In this report, data of experimental research of three-layer ferrite-dielectric waveguides (FDW) in the millimeter wave band has been represented. These waveguides are the basis of integrated phased arrays (IPA) with electrical control of beam position. The IPA itself is founded on a travelling wave antenna principle. The maximum size of such an antenna is determined by losses in the waveguide. Th......
#Dielectrics #Ferrites #Phased arrays #Dipole antennas #Magnetic flux #Antennas and propagation #Antenna accessories #Planar waveguides #Millimeter wave technology #Antenna measurements
Current mode digital gates for mixed mode reprogrammable integrated system
- Trang 178-181
This paper presents some aspects of building a reprogrammable system using current mode gates. With this approach it is possible to extend system on a chip solutions into the area of mixed mode applications. CMOS current mode gates consume almost constant current from the power supply and therefore are suitable for mixed mode operations. Contrary to voltage mode digital gates, presented in the pap......
#Crosstalk #Circuit noise #Frequency #Power supplies #Digital circuits #Voltage fluctuations #Analog-digital conversion #Analog circuits #Silicon on insulator technology #Noise level
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
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
A comparison of two schemes for peak-to-average power ratio reduction in a multicarrier transmission
- Trang 102-105
A clipping-filtering technique is the simplest and most widely used technique for peak-to-average power ratio reduction in a multicarrier transmission. The paper presents comparison analysis of two clipping-filtering schemes. The first one performs clipping of a signal at the Nyquist rate while in the second implementation a signal is oversampled before clipping. The schemes are compared through t......
#Peak to average power ratio #OFDM #Nonlinear distortion #Filters #Distribution functions #Bit error rate #Fluctuations #Frequency domain analysis #Analytical models #Digital communication
New current-mode integrator, all-pass section and quadrature oscillator using only active elements
- Trang 70-73
construct a quadrature oscillator. These circuits are composed of operational amplifiers (OAs) and operational transconductance amplifiers (OTAs), without using external passive elements. Also as an application these circuits are used to construct a sinusoidal quadrature oscillator. The proposed circuits are suitable for monolithic implementation either with CMOS or bipolar technologies. All of ac......
#Oscillators #Operational amplifiers #Frequency #Transconductance #CMOS technology #Circuit testing #SPICE #Circuit simulation #Filters #Equations
Ultra-wideband (UWB) interference resistant system for secure radio communication with high data rate
- Trang 230-233
The ultra-wideband interference resistant system for secure radio communication with high data rate is considered. In such a system, information is transmitted by a sequence of short pulses with duration about 1 ns. The pulse repetition frequency (information rate) is from one to ten megabits per a second. Modulation is performed by using pulse switching on and off (ON-OFF Keying). Signal detectio......
#Ultra wideband technology #Interference #Radio communication #Pulse modulation #Information rates #Communication switching #Signal detection #Radio transmitters #Frequency synchronization #Power system security
Nonequilibrium 1/f noise and problems of submicron technology of high reliability microcircuits
- Trang 400-403
A proposition is put forward that nonequilibrium fluctuations of reactive energy (electric and magnetic) in crystal areas are causing deterioration of the reliability of elements due to the decrease in their sizes. We assume that those fluctuations and the known 1/f noise are same. The lowest frequency of 1/f fluctuations of energy is defined by the microcircuit operating duration. Inevitably the ......
#Fluctuations #Equations #Frequency #Magnetic noise #Circuit testing #Physics #Thermodynamics #Reactive power #Parasitic capacitance #Voltage
Simulation of second order comb filter based on delta modulation
- Trang 86-87
In this paper, a simulation technique is presented to confirm the operation of a suggested structure for the second order comb filter which is used for different applications, such as telecommunications, control systems, bioelectronics, etc. Two types of structure are investigated from mathematical analysis which describes their operation in the time and frequency domains. The suggested structure ......
#Filters #Delta modulation #Application software #Control system synthesis #Telecommunication control #Mathematical analysis #Frequency domain analysis #Computational modeling #Computer simulation #Telecommunication computing