Voltage Mode Single CDBA Based Multifunction Filter

Transcription

1 IOP onference Serie: Material Science and Engineering PAPER OPEN AESS oltage Mode Single DBA Baed Multifunction Filter To cite thi article: Priyanka upta et al 7 IOP onf. Ser.: Mater. Sci. Eng. iew the article online for update and enhancement. Related content - Quantied Hall effect and magnetoreitance through a quantum point contact B R Snell, P H Beton, P Main et al. - Organic Multifunction Diode Operable for Emiion and Photodetection Mode Hiroyuki Shimada, Junya Yanagi, Yohuke Matuhita et al. - Multiple Matched Filtering Uing Sampling Spatial Filter Akihiro Hayahi and Maaaki Adachi Thi content wa downloaded from IP addre on //7 at 9:7

2 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// oltage Mode Single DBA Baed Multifunction Filter Priyanka upta, Rajehwari Pandey, Neeta Pandey Department of Electronic and ommunication Engineering, Delhi Technological Univerity, Main Bawana Road, Delhi,, India, priyankagupta9@gmail.com rajehwaripandey@gmail.com, neetapandey6@gmail.com Abtract: A voltage mode multifunction econd order filter topology employing ingle current differencing buffered amplifier DBA ha been propoed in thi paper. Thi topology can be ued to yntheize low pa LP, band pa BP, and high pa HP filter function with appropriate admittance choice. Thi configuration i a uitable choice for implementing filter with high quality factor. The demontration of the propoed configuration i done through PSPIE imulation.the DBA block i realized uing MOS.8µm technology. The imulation reult are found in cloe agreement with the theoretical reult. eyword:dba, urrent mode, Multifunction Filter.. INTRODUTION Electronic filter are the neceary building block of analog ignal proceing and find extenive application in communication and intrumentation ytem. In lat few decadethe DBA ha emerged a a promiing choice [] for analogfilter deign [], [], [], [], [6], [7], [8], [9], [], [], [], [], [], [], [6], [7], [8]. It i characterized by low input impedance terminal which render it free from paraitic capacitance, thereby making it a uitable choice for high frequency operation. Additionally, the DBA provide both voltage and current output which further enhance the deign flexibility. Many biquadratic filter uing DBA were propoed in the literature that can be claified a ingle input and ingle output SISO [],[8],[], [],[7] multi input ingle output MISO [9], [], [6] and ingle input multi output SIMO [], [], [], []. A detailed comparion of thee tructure i given in Table. For the application having power conumption a an important deign contraint, ingle active element baed filter are the ueful choice. A cloe tudy of the voltage mode tructure baed on ingle DBA propoed in [], [8], [9], [] and [6] how that only ingle filter repone i provided [], [] Independent adjutment of angular frequency and Q factor i not poible [8], [] filter repone are obtained by lifting of node for input excitation [9], [6] large component pread i required for obtaining high Q value [8], [9], [], [6] paive component count i large [6] In thi paper a voltage mode generalized econd order multifunction filter topology i propoed which employ ingle DBA, two capacitor and four reitor. The propoed ontent from thi work may be ued under the term of the reative ommon Attribution. licence. Any further ditribution of thi work mut maintain attribution to the author and the title of the work, journal citation and DOI. Publihed under licence by Ltd

3 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// generalized topology can be ued to realize three filter function namely, low pa LP, band pa BP, and high pa HP, through appropriate component election, and no component matching condition i needed. The propoed topology can be ued to implement high quality factor value with moderate component pread. The remaining paper i organized a follow: Section preent the decription of the propoed configuration. The enitivity analyi i preented in ection. The effect of non-idealitie of DBA ha been dealt with in ection. The SPIE imulation reultare placed in ection followed by concluion in ection 6. Table : omparion of the propoed work with the previouly reported work Ref No of DBA Type Standard filter Function Mode R Independent ω o and Q [] SIMO LP, BP, HP M YES [] SISO BP M, YES, [] SIMO LP, BP, HP M YES [8] SISO LP, BP, HP LP BP HP NO M M TIM NA TAM [9] MISO LP, BP, HP, AP, M YES [] SIMO LP, BP, BS M 7 YES HP, BP, AP M 7 [] SIMO LP, BP M YES SISO HP M YES SISO HP M YES [] SISO AP M NO [] SIMO LP, BP, BS M YES SIMO HP, BP, AP M YES [] MISO LP, BP, HP, BS, M YES [6] MISO LP, BP, HP, BS, M YES [7] SISO LP, BP, HP, BS, M YES Propoed work SISO LP, BP, HP M YES. IRUIT DESRIPTION The port characteritic of DBA are given by matrix and it circuit ymbol i hown in Fig.. Iz w p n z Iw Ip In

4 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// Fig. : DBA ymbol The propoed filter topology i hown in Fig.. Uing routine analyi the tranfer functionfor thepropoed circuit i obtained a Y Y o, in D Where, Y, Y6 D YYYY YY YY YY YY YY YY Y Y Fig. : Propoed Filter Topology The appropriate admittance choice would reult in three required filter repone, a lited in Table. Table :Admittance Selection for Propoed Filter Topology Repone Type Y Y Y Y Y Y 6 LP 6 HP 6 BP 6 For the admittance choice available in Table, the tranfer function for LP, HP and BP can be expreed a: O in LP O in HP S O in BP 6 7 From equation -7, the reonant angular frequency ω, quality factor Q and filter gainh for the three filter are lited in Table.

5 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// Table : Filter Parameter Filter Type ω Q H LP HP BP Table lit the filter parameter for all the three repone when all the conductance are et equal to except 6 and all capacitor are et equal to. It may be oberved from the Table that ω can be et uing appropriate and value and the deired Q can be obtained with the help of 6, the determining component, thereby making tuning independent. Table :Filter Parameter for Equal omponent Deign Filter Type ω o Q o H o LP / /- / HP / /- BP / /- /-. SENSITIITY ANALYSIS The paive enitivitie of ω and Q for the LP filter configuration can be derived a S ω ω S, S ω, S ω S ω ω, S, S Q, S Q 8 Similarly the paive enitivitie of ω and Q for the HP and BP filter configuration can be alo be computed which have not preented here for the ake of brevity.it maybe oberved that the filter configuration are inenitive to parameter variation a paive enitivitie for all the repone are le than. in magnitude.,. NON-IDEALITY ANALYSIS In MOS implementation of DBA current and voltage tracking error may exit due device mimatch. Taking thee error into conideration the terminal relationhip of the DBA get modified I z α I p p α I n n

6 6789 IMAEM-7 IOP onf. Serie: Material Science and Engineering 7 doi:.88/77-899x/// w z β where p α -ε p, α n -ε n and β - ε v The termε p ε p << andε n ε n << denote the current-tracking error from p and n terminal to z terminalrepectively and ε v ε v << i the voltage-tracking error from z to w terminal of the DBA. The modified tranfer function of the propoed filter in the preence of current and voltage tracking error can be expreed a: LP n in O HP n in O S BP n in O So thi can be evaluated looking at Table natural frequency of the filter topology i not influenced by tracking error of the DBA.. SIMULATION RESULTS The propoed multifunctional filter i verified through imulation uing themos implementation of the DBA a preented in []. The SPIE imulation are performed uing.8µm MOS proce parameter provided by MOSIS AILENT. Supply voltage taken are ±.9. The LP, HP and BP filter configuration were deigned with Q and f of Hz. For all three filter reponethe value of reitance are takena kω except for R 6 having a value i.68kω for LP and.86kω for HP and BP it i. The value of capacitance for LP are choen.nf and for HP and BP the value of apacitance are.nf.the imulated frequency repone of all the three configuration are hown in Fig. a, b and c repectively. The imulated f i oberved to be 9 Hz in cae of LP wherea in HP and BP it i found to be 8 Hz. The imulated value are in cloe agreement to the theoretical frequency of Hz.

7 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// ain db Phaedeg d -d -d -d H H H.MH MH a ain db Phaedeg -- -.Hz H Hz.MH MH b Phaedeg d d -9d ain db - -.Hz Hz c Fig. : Phae and ain repone of propoed a LP b HP c BP Filter To how the tuning of f BP repone are plotted for two different value of f while keeping Q fixed at a depicted in Fig. a. The independent tunability of Q with R 6 i hown in Fig. b. The center frequency f i taken to be Hz..MHz 6MHz ain db - fohz fohz ain db - Q Q -.Hz Hz.MHz MHz -.Hz Hz.MHz MHz a b Fig. : The BP repone depicting independent tunability of a f b Q Functionality of propoed filter topologyi alo teted through ittime domain repone.a a cae tudy the tranient repone of HPF i oberved by applying a compoite input inuoidal ignal having frequencie of Hz and 7 Hz. 6

8 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// m m Input oltage Input oltage 8m m -m u u m Time a m Hz.MHz.MHz.7MHz.MHz b Output oltage -m -m u u u Time c d Fig. : The HP Filter: Input ignal a in time domain b pectrum,output ignal c in time domain d pectrum The tranient repone along with their repective frequency pectrum for input and output ignal are hown in Fig. a-d. It may be oberved from the repone of Fig. d that the 7 Hz ignal i paed without attenuation and Hz ignal i ignificantly attenuated. The performance of propoed filter topology i alo evaluated through well known Monte arlo tatitical analyi. The imulated tandard deviation of f i oberved to be Hz for BP configurationimulated by etting the value of all paive element in % tolerance. Thi implie that the propoed filter topology ha reaonable enitivity characteritic. The derived hitogram after imulation run for BP filter i hown in Fig.6. P e r c e n t Output oltage m m Hz.MHz.MHz.7MHz.MH z 6. ONLUSION enterchematic6:z,. n ample n diviion mean 9 igma. minimum 6 th %ile 9 median 9th %ile 7 maximum 76 *igma 67. Fig.6:Monte arlo tatitical reult BP Filter A new voltage mode ingle DBA baed filter topology i preented in thi paper. The configuration can be ued to yntheize LP, HP and BP filter with appropriate choice of admittance. The propoed configuration can be extended to obtain the current mode, tranadmittance mode and tranimpedance mode through appropriate input ignal and 7

9 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// component election. The propoed configuration i a uitable choice for high quality factor implementation. Paive enitivitie for the configuration are found low. Extenive SPIE imulation are carried out to oberve the performance of the propoed configuration. The imulation and theoretical reult are found in cloe agreement. REFERENES [] D. Biolek, R. Senani,. Biolkova, Z, andolka, Active Element for Analog Signal Proceing: laification, Review, and New Propoal, Radio engineering,vol. 7, no., pp.-, 8. [] R. Pal, R.. Tiwari, R. Pandey, and N. Pandey, Single DBA baed current mode firt order multifunction filter, IJEST, vol. 6, no.7,. []. Acar, and S. Ozoguz, A new veratile building block: current differencing buffered amplifier uitable for analog ignal proceing filter, Microelectronic Journal, vol., no., pp. 7-6, 999. [] A. U. ekin, oltage-mode high-q band-pa filter and ocillator employing ingle DBA and minimum number of component. International Journal of Electronic, vol. 9, no. 8, pp ,. [] S. Ozoguz, A. Toker, and. Acar, urrent-mode continuou-time fully-integrated univeral filter uing DBA, Electronic Letter, vol., no., 999. [6] A.Toker, S. Özoguz, O. Çiçekoglu, and. Acar, urrent-mode all-pa filter uing current differencing Buffered amplifier and a new high- bandpa filter onfiguration, IEEE Tranaction On ircuit And Sytem II: Analog And Digital Signal Proceing, vol. 7, no. 9, pp. 99-9,. [7] W. Tangrirat, N. Fujii, and W. Surakampontorn, urrent-mode leapfrog ladder filter uing DBA, Proceeding of the IEEE International Sympoium on ircuit and Sytem ISAS, pp. 7-6,. [8] M. okal, S. E. Oner, and M. Sagba, A new econd-order multi-mode multi-funtion filter uing a ingle DBA, European onference on ircuit Theory and Deign,Antalya/Turkiye, IEEE, pp , 9. [9] S. A. Bahir, and N. A. Shah, oltage mode univeral filter uing current differencing buffered amplifier a an active device, ircuit and Sytem, vol., no., pp. 78-8,. [] S. Piitchalermpong,T. Pukkalanun, W. Tangrirat, and W. Surakampontom, urrent differencing buffered amplifier baed multiple-output biquadratic filter, Electron. Device and Solid-State ircuit, IEEE, pp. -,. [] F. açar, and S. Menekay, Realization of a MOS current differencing buffer amplifier and it filter application, Electrical and Electronic Engineering ELEO onference, Bura IEEE, 8-6,. [] S.Özcan, H. untman, and O.Çiçekoglu, acadable current mode multipurpoe filter employing current differencing buffered amplifier DBA, International Journal of. Electronic. and ommunication, vol. 6, no., pp. 67-7,. []. akir, S. Minaei, and O. icekoglu, Low voltage low power MOS current 8

10 IMAEM-7 IOP onf. Serie: Material Science and Engineering doi:.88/77-899x/// differencing buffered amplifiier,analog Integrated ircuit Signal Proce,vol. 6, no., pp. 7,. [] W. Tangrirat, and W. Surakampontorn, Realization of multiple-output biquadratic filter uing current differencing buffered amplifier, International Journal of Electronic, vol. 9, no. 6, pp.,. []. Sawangarom, T. Dumawipata, W. Tangrirat, and W. Surakampontorn, acadable three-input ingle-output current-mode univeral filter uing DBA, The ETI International onference, 7. [6] A. U. ekin, Multi-function biquad uing ingle DBA,Electrical Engineering,vol. 88, no., pp. 6, 6. [7] A. U. ekin, and E. Hancioglu, urrent Mode Multifunction Filter Uing Two DBA, International Journal of Electronic & ommunication. vol. 9, no. 8,pp. 9-98,. [8] R. Pandey, N. Pandey, T. Negi, and. arg, DBA baed univeral inveree filter. ISRN Electronic, Article ID 8869, vol.,. Priyanka upta did B.E Hon. and M.Tech in Electronic and ommunication Engineering from MaharhiDayanand Univerity, Rohtak. She i having teaching experience of three year. urrently he i puruing her Ph.D from Delhi Technological Univerity, Delhi. Her reearch interet are Analog Integrated ircuit and ignal proceing. Rajehwari Pandeydid her B.Tech Electronic and Telecommunication from Univerityof Allahabad, M.E. Electronic and ontrol from BITS, Pilani, Rajathan and Ph.D. from Delhi Univerity. urrently, he i Aociate Profeor in Department of Electronic and ommunication Engineering, Delhi Technological Univerity, Delhi. Her reearch interet include Analog Integrated ircuit, and Microelectronic. Neeta Pandey did M. E. in Microelectronic from Birla Intitute of Technology and Science, Pilani, Rajathan, India and Ph.D. from SIPU Delhi, India. At preent he i Aociate Profeor in Department of Electronic and ommunication Engineering, Delhi Technological Univerity, Delhi. A life member of ISTE, and member of IEEE, USA, he ha publihed paper in International, National Journal of repute and conference. Her reearch interet are in Analog and Digital LSI Deign. 9