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Digital assistable inverter-based band-pass filter 基于数字辅助逆变器的带通滤波器
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1353892
T. Wattanasaovaluk, J. Ngarmnil, A. Worapishet
{"title":"Digital assistable inverter-based band-pass filter","authors":"T. Wattanasaovaluk, J. Ngarmnil, A. Worapishet","doi":"10.1109/MWSCAS.2004.1353892","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1353892","url":null,"abstract":"This paper proposes a low voltage inverter-based band-pass filter. The circuit is formed in class AB structure using only capacitors and CMOS inverters delivering wide signal swing and low voltage capabilities. With a digital assisting scheme, the center frequency around 900 MHz and 200 MHz bandwidth can be maintained with the power supply variation of 1.40-1.70 Volts. Simulation results of both biquadratic and 4/sup th/-order filters on 0.25 /spl mu/m CMOS processes confirm the functionalities and performances.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133700209","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}
引用次数: 2
Exact calculation of amplitudes and frequency of RC-oscillator with quadrature outputs 具有正交输出的rc振荡器的幅值和频率的精确计算
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354015
L.B. Oliveira, I. Filanovsky, C.J.M. Verhoveven
{"title":"Exact calculation of amplitudes and frequency of RC-oscillator with quadrature outputs","authors":"L.B. Oliveira, I. Filanovsky, C.J.M. Verhoveven","doi":"10.1109/MWSCAS.2004.1354015","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354015","url":null,"abstract":"A calculation of exact frequency and amplitudes in an RC-oscillator with quadrature outputs is given. The oscillator includes two multivibrators synchronized by the cross-coupling comparators measuring the voltages at the timing capacitors and providing coupling currents in the collector resistors of the multivibrators. It is shown that the outputs are in quadrature only when both multivibrators are symmetric (yet the parameters of one multivibrator may be different from the parameters of another). The theoretical results are confirmed by simulation.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132134321","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}
引用次数: 10
Noise shaping in spiking neural nets - network design issues 尖峰神经网络中的噪声形成-网络设计问题
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354178
C. Mayr, R. Schuffny
{"title":"Noise shaping in spiking neural nets - network design issues","authors":"C. Mayr, R. Schuffny","doi":"10.1109/MWSCAS.2004.1354178","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354178","url":null,"abstract":"In recent years, there has been an increased focus on the mechanics of information transmission in spiking neural networks. Especially the noise shaping properties of these networks and their similarity to delta-sigma modulators has received a lot of attention. However, very little of the research done in this area has focused on the effect the weights in these networks have on the noise shaping properties. This paper concerns itself with the various modes of network operation and beneficial as well as detrimental effects which the systematic generation of network weights can effect. Relevancy of this research to industrial application of neural nets as building blocks of oversampled A/D converters is shown. Also, further points of contention are listed, which must be thoroughly researched to add to the above mentioned applicability of spiking neural nets.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132286558","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}
引用次数: 3
Design techniques for micropower low-voltage CMOS switched-capacitor delta-sigma modulator 微功率低压CMOS开关电容δ - σ调制器设计技术
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354362
Tsung-Sum Lee, Wen-Bin Lin, D. Lee
{"title":"Design techniques for micropower low-voltage CMOS switched-capacitor delta-sigma modulator","authors":"Tsung-Sum Lee, Wen-Bin Lin, D. Lee","doi":"10.1109/MWSCAS.2004.1354362","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354362","url":null,"abstract":"The design of a micropower, low-voltage switched-capacitor delta-sigma modulator that consumes only 90 /spl mu/W at 1.5 V supply is described. The modulator is designed employing bootstrapped switches in order to facilitate low voltage operation. Low power dissipation is obtained through the use of biasing some transistors in weak inversion. The delta-sigma modulator achieves an 88 dB dynamic range and a peak signal to noise plus total harmonic distortion ratio of 67.1 dB with a sampling rate of 1 MHz and an oversampling ratio of 128.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"32 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133105423","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}
引用次数: 0
An improvement of an adaptive weighted mean filter using fuzzy clustering 基于模糊聚类的自适应加权均值滤波器的改进
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1353982
M. Muneyasu, T. Imai, T. Oda, T. Hinamoto
{"title":"An improvement of an adaptive weighted mean filter using fuzzy clustering","authors":"M. Muneyasu, T. Imai, T. Oda, T. Hinamoto","doi":"10.1109/MWSCAS.2004.1353982","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1353982","url":null,"abstract":"This paper proposes a novel edge-preserving adaptive weighted mean filter using fuzzy clustering. An input vector in the filter mask is classified according to predefined clusters and the membership values corresponding to all clusters are obtained. The filter output is given by the weighted sum of the membership values with the inner products of the input vector with weight vectors according to the clusters. The proposed filter can reduce mixed noises with preserving edges satisfactory, because a fuzzy clustering flexibly classifies ambiguous local image information and adaptively controls filter weights.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128810047","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}
引用次数: 1
Clusters first? A study of circuit structure and placement 集群第一?电路结构和布局的研究
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354019
S. Ono, P. Madden
{"title":"Clusters first? A study of circuit structure and placement","authors":"S. Ono, P. Madden","doi":"10.1109/MWSCAS.2004.1354019","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354019","url":null,"abstract":"Multilevel clustering has proven to be an effective technique for a number of problems. In this paper, we study a clusters-first approach to circuit placement, compare it to more traditional methods, and study the relationship between cluster sizes and placement quality. We also reveal shortcomings in recently developed benchmarks that can serve to bias experiments towards a clusters-first methodology.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127807541","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}
引用次数: 1
Design of complex-valued variable digital filters and its application to the realization of arbitrary sampling rate conversion for complex signals 复值可变数字滤波器的设计及其在实现复信号任意采样率转换中的应用
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354165
K. Tsui, S. Chan, K. Tse
{"title":"Design of complex-valued variable digital filters and its application to the realization of arbitrary sampling rate conversion for complex signals","authors":"K. Tsui, S. Chan, K. Tse","doi":"10.1109/MWSCAS.2004.1354165","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354165","url":null,"abstract":"This paper studies the design of complex-valued variable digital filters (CVDFs) and their applications to the efficient arbitrary sample rate conversion for complex signals in software radio receivers. The design of CVDFs using either the minimax or least squares criteria is formulated as a convex optimization problem and solved using the second order cone programming (SOCP) or semidefinite programming (SDP). In addition, linear and convex quadratic inequality constraints can be readily incorporated. Design examples are given to demonstrate the effectiveness of the proposed approach.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134499263","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}
引用次数: 9
Design of CMOS UWB low noise amplifier with cascode feedback 带级联码反馈的CMOS超宽带低噪声放大器设计
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354240
H. Doh, Youngkyun Jeong, Sungyong Jung, Y. Joo
{"title":"Design of CMOS UWB low noise amplifier with cascode feedback","authors":"H. Doh, Youngkyun Jeong, Sungyong Jung, Y. Joo","doi":"10.1109/MWSCAS.2004.1354240","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354240","url":null,"abstract":"This paper shows the design of a broadband single-stage single-ended low noise amplifier (LNA) for the frequency range 3GHz to 7GHz using 0.18/spl mu/m RF CMOS technology. The cascode feedback topology and broadband matching technique were used in the amplifier to achieve broad bandwidth performance and input/output matching characteristics respectively. The effects of feedback resistor on noise figure (NF) and gain were also described. In the operating frequency range, 1.9dB of NF, 15dB of the gain, and 0.8dB of maximum gain flatness were achieved, and the maximum input/output return loss is lower than -1OdB. The total power consumption of the LNA including bias network is 21mW under a 1.8V single supply voltage.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115687211","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}
引用次数: 31
A detection algorithm for single tones and chords applying wavelet packets and the extended Kalman filter 一种基于小波包和扩展卡尔曼滤波的单音和和弦检测算法
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354383
Y. Fukayama
{"title":"A detection algorithm for single tones and chords applying wavelet packets and the extended Kalman filter","authors":"Y. Fukayama","doi":"10.1109/MWSCAS.2004.1354383","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354383","url":null,"abstract":"A detection algorithm for single tones and chords which sounds several tones simultaneously has been developed. The algorithm which wavelet packets analyses and extended Kalman filtering are applied to is designed for log-normal state vector, distributed initial phase and observation noise under the central limit theorem. Derivation of the algorithm as well as practical performance for transcription of chords, intervals and single tones are introduced.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115742010","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}
引用次数: 0
Algorithm for generalized harmonic analysis (GHA) 广义谐波分析(GHA)算法
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354114
T. Muraoka, S. Kiriu, Y. Kamiya
{"title":"Algorithm for generalized harmonic analysis (GHA)","authors":"T. Muraoka, S. Kiriu, Y. Kamiya","doi":"10.1109/MWSCAS.2004.1354114","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354114","url":null,"abstract":"Generalized harmonic analysis (GHA) proposed by Wiener (1958) is a fine tool in time-frequency resolution because it expresses signal using almost-periodic function. However, the method is rarely utilized because it involves a large amount of calculation. High efficiency algorithm for GHA was developed first by Hirata, and was further improved recently in a reduction of calculation amount. However, they were not enough in accuracy. Starting from the Hirata's algorithm, the authors have achieved a high-speed, highly accurate GHA algorithm by improvement in the calculation method of sine and cosine coefficients and subdivision of a frequency scale.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115798871","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}
引用次数: 1
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