{"title":"Sensory system for the electronic water meter","authors":"R. Garmabdari, S. Shafie, M. Isa","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408284","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408284","url":null,"abstract":"Currently, energy management has become one of the most controversial issues in the world due to limitations in natural resources, and the measurement of water consumption by means of water meter. Measuring water consumption has been considered a serious matter in order to control and manage the resources of water. Therefore, there are many approaches, which have been offered such as Ultrasonic, Electromagnetic, and Mechanical mechanism. However, there have been a lot of restrictions in them such as providing the power supply for the meter, the cost of implementation, accuracy of measurement etc. The circuit was designed based on the Hall-Effect sensor by applying a new technique to remove the effects of disturbing signals, which might be derived either of a strong electromagnetic field or temperature. Furthermore, this proposed technique will reduce the number of applied sensors. The CMOS technology was employed to reduce the power consumption, the effects of input resistance on sensor and, etc. The output of each sensor's signal is going to be shown as following, which illustrates the system performance. consequently, the electronic water meter has been designed to be not affected by electromagnetic field, temperature and so on, furthermore the reduction power consumption and the its cost was considered to be mass produced in the design.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123289735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design of CMOS opamp using Potential Distribution Method","authors":"R. Todani, A. K. Mal","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408293","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408293","url":null,"abstract":"This paper demonstrates the design of CMOS operational amplifiers (opamp) using Potential Distribution Method (PDM). PDM is a design technique for analog circuits and is based on the principle of voltage distribution between the supply rails of a circuit. Apart from being process independent, it is free from complex mathematical expressions associated with the devices and the circuit. Instead of analytical methods, PDM directly uses the simulator as a device sizing tool to meet the desired performance. This is achieved by first designing an opamp with moderate performance based on symmetric voltage distribution and then modifying the node potentials to meet the target specifications. A fully differential telescopic opamp along with common mode feedback circuit is thus designed using PDM and the simulation results are presented.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128348743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hui Ying Foo, Kevin Wei Chung Leong, R. Mohd-Mokhtar
{"title":"Density aware interconnect parasitic estimation for mixed signal design","authors":"Hui Ying Foo, Kevin Wei Chung Leong, R. Mohd-Mokhtar","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408311","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408311","url":null,"abstract":"With the current advancement of the design technology process, the contribution of interconnects parasitic to critical path delays has become crucial in determining the overall chip performance. A reliable parasitic estimation tool can help in assisting the design decisions as well as enabling a more precise synthesis; minimizing the tedious repetitive design cycles of placement and routing process. Experiments show that different interconnects estimation algorithms produce different parasitic RC values. To achieve an accurate parasitic capacitance prediction, several approaches were investigated and a new methodology of estimation is proposed. The new algorithm performs estimation prior to layout. It modifies the conventional estimation methodology by taking into account the layout density specification for a more precise interconnects parasitic capacitance estimation. The algorithm is divided into two stages; the pre-layout routing estimation and the generation of interconnect parasitic values. The layout density specification is brought into consideration on the second phase of the estimation process. The accuracy of the approximation is determined by comparing the estimated results with the actual post-layout data. The final outcome is positive, showing a good correlation between the pre-layout and post-layout measures; varying within 10 percent of the final extracted values.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133940131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sheng Dai, Fangjiong Chen, Xiaodong Chen, S. Xiong
{"title":"Optimal power allocation of pilot symbols for LS channel estimation in OFDMA uplink","authors":"Sheng Dai, Fangjiong Chen, Xiaodong Chen, S. Xiong","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408298","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408298","url":null,"abstract":"In the uplink transmission of Orthogonal Frequency Division Multiple Access (OFDMA) systems, the subcarriers are assigned to uplink users by the system scheduler. Since each user only applies a portion of the subcarriers and the users experience different multipath channels, conventional channel estimation approach using uniformly placed pilot tones and uniform power allocation is not applicable. In this paper, we assume the places of the pilot tones have been decided by the scheduler and consider optimal power allocation of the pilot symbols, so as to minimize the mean square error (MSE) of channel estimation. The problem is formulated as a classical semidefinite programming (SDP) problem, and hence it can be solved with polynomial complexity.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131278980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Adaptive momentum Levenberg-Marquardt RBF for face recognition","authors":"S. I. Ch'ng, K. Seng, L. Ang","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408325","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408325","url":null,"abstract":"This paper investigates the application of Levenberg-Marquardt (LM) based radial basis function (RBF) neural networks for face recognition. The contribution of this paper is two-fold. First, we propose the use of Levenberg-Marquardt (LM) and adaptive momentum LM algorithm to update the weights and network parameters (centers and width). The purpose of the proposal of the latter algorithm is to further increase the learning efficiency of the RBF neural network. The second contribution of the paper is the adaptation of the high computational complexity LM-based RBF neural networks to the complex problem of face recognition. To reduce the computations required, dimension reduction was applied prior to the training of the networks. In addition to that, we have also proposed the use of prior knowledge to guess the initial values of the weights during initialization as oppose to random weights. The proposed methods were tested on the Yale database and were found to yield positive results that can further improve the learning efficiency of the networks for the application of face recognition.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133244613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A new CMOS second generation current conveyor with variable current gain","authors":"M. Kumngern","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408343","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408343","url":null,"abstract":"This paper presents a new technique to realize CMOS second generation current conveyor (CCII) with variable current gain. Unlike the previous CCII with variable current gain, the current gain of proposed CCII can be controlled linearity by adjusting the ratio of the biasing currents that is realized by using differential difference current conveyor (DDCC)-based log-antilog current amplifier. The proposed structure provides a wide tunable range and a simple circuitry. PSPICE simulation results are given to confirm the theoretical analysis.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124246000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Lombigit, M. Khalid, M. Hamidon, Nasri Sulaiman
{"title":"Noise measurement in amplifying system for radiation detectors","authors":"L. Lombigit, M. Khalid, M. Hamidon, Nasri Sulaiman","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408282","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408282","url":null,"abstract":"Electronic noise is a critical parameter especially for electronic devices which deal with low level input signals such as preamplifier-shaper chains in nuclear instrumentation. It degrades the capability of the amplifying system as a radiation measurement device in terms of detection level, energy resolution and event measurement. In this paper, we propose an experimental approach to noise measurement in amplifying systems for radiation detectors. The experimental results are verified with theoretical computation and validated with an established experimental method. The results are in good agreement with theoretical and established methods.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126400665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Somayeh Rahimipour, W. N. Flayyih, I. El-Azhary, S. Shafie, F. Rokhani
{"title":"A survey of on-chip monitors","authors":"Somayeh Rahimipour, W. N. Flayyih, I. El-Azhary, S. Shafie, F. Rokhani","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408286","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408286","url":null,"abstract":"Systems on Chips (SoCs) architecture complexity is result of integrating a large numbers of cores in a single chip. The approaches should address the systems particular challenges such as reliability, performance, and power constraints. Monitoring became a necessary part for testing, debugging and performance evaluations of SoCs at run time, as On-chip monitoring is employed to provide environmental information, such as temperature, voltage, and error data. Real-time system validation is done by exploiting the monitoring to determine the proper operation of a system within the designed parameters. The paper explains the common monitoring operations in SoCs, showing the functionality of thermal, voltage and soft error monitors. The different architectures that are approached by the research community until now are discussed.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114849099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"UWB transmitter for communication and localization for IEEE 802.15.4a standard","authors":"D. Martynenko, G. Fischer, O. Klymenko","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408329","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408329","url":null,"abstract":"This paper describes a monolithic integrated transmitter intended for impulse-radio (IR) Ultra-wide Band (UWB) applications compliant to the IEEE 802.15.4a standard. The transmitter operates in the higher UWB band on the communication channels #5, #6, #8 and mandatory channel #9. The impulse generation is based on the gated oscillator principle allowing required on-off keying (OOK) as well as binary phase shift keying (BPSK) with the pulse repetition frequency up to 499.2 MHz. The transmitter key components are optimized for the low power operation. The frequency synthesizer includes the novel low-power load-independent voltage controlled oscillator with a resonator isolated from the external load. Additionally, the programmable frequency divider based on the novel fast low-power triple-modulus prescalers is implemented. The triple- modulus prescaler realizes three modes (N/N±1) via the phase switching between the output signals of the master/slave ECL divide-by-two stage. In addition, the 50% duty cycle baseband clock of 499.2 MHz is derived from the divider chain, regardless of the chosen channel. Each functional transmitter block includes a “power down” switch for power efficient operation. Besides the communication, the time-of-arrival unit is implemented. It supports precise indoor localization in conjunction with an appropriate UWB receiver. The presented transmitter was fabricated in a 0.25 μm SiGe:C BiCMOS technology occupying a Si area of 1.85 × 1.85 mm2.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128173646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design & simulation of high speed Synchronous Buck converter using simple resonant gate driver","authors":"N. Yahaya","doi":"10.1109/ICCIRCUITSANDSYSTEMS.2012.6408321","DOIUrl":"https://doi.org/10.1109/ICCIRCUITSANDSYSTEMS.2012.6408321","url":null,"abstract":"Designing Synchronous Buck converter always evolve around two major criterions: quality of output load and power dissipation of the converter. While quality of the converter can be relatively easier to be achieved by controlling the values for all the elements carefully using even conventional schemes, techniques to handle and optimize power dissipation is often sophisticated and complex. In this paper, the techniques used for implementing lower power dissipation such as Resonant Gate Drive and PWM scheme are investigate. Then the simulations are carried out to verify the theories.","PeriodicalId":325846,"journal":{"name":"2012 IEEE International Conference on Circuits and Systems (ICCAS)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117237436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}