Pceed f he 6h WSEAS eaal Cfeece Appled fac ad Cuca Eluda eece Auu 8-0 006 pp6-0 MPON LNEATY AND SENSTTY N LOW NOSE AMPLES EDA ALEJANDO ANDADE ONZÁLEZ MAO EYES AYALA JOSÉ ALEDO TADO MÉNDEZ Elecc Depae Mepla Auu Uvey-Azcapzalc Ave. S Pabl # 80 Cl. eya Taaulpa Méxc Cy Méxc MÉXCO eaa@ce.azc.ua.x eaa000@hal.c Abac: - h pape a acve feedback aplfe ucue wa aalyzed. Th aplfe hw d leay ad evy peface. The cd educe he leae wee fuded ad al wa deaed ha he evy f he aplfe ca be pved. Expeeal eul ae hw. ey-wd: - Leay Sevy eedback Aplfe Ne edula. duc Nwaday he lw e aplfe have upp eveal cuca adad peal cuca ye h he ea pved he evy ad leay peface. The aaed f a wde dyac ae pe d. Thee ae eveal echque pved leay ad evy peface aplfe bu al hee ae ade-ff a de paaee; f exaple: lw vlae upply leay heal ably evy c lw pwe cup ec. de bece e dffcul. Oe f he echque cly ued educe he leay eave pave feedback ply. Th e educed he edula pduc a well a a. The evy eceve deeed aly by he f blck f aplfe lw e aplfe. Thee ae eveal fac ha affec he evy peface. A pzed e fue ca be e ch: lw level e a lw e aplfca ucue pu plaza p pu ad upu pedace ha ve he lwe e fue ach pedace [][]. Se f he aee ba d evy peface deade he leay f he aplfe. exaple: he pu plaza p aplfe u bpla a pee d evy peface whe cllec cue lw []. Th aey deade he leay peface becaue lw cllec cue. Al he pwe a educed []. The DC feedback ucue ve d level f heal ably he c ee cfua whch ffe hh level f pwe a. Bu ceae he pwe cup ad deade he e fue a he udeed effec. The eave pave feedback pve he leay he aplfe bu educed he d e peface. S he acve feedback aplfe hw lke a d cfua wh hh pealy hh evy hh leay ad lw upply vlae ue peal cuca devce.. Acve feedback aplfe Acve feedback aplfe The aplfe ucue pped hw fue. A we ca ee h ucue he eave ad DC feedback a well a he a ffe hh level f heal ably. Al he ucue cpable wh lw pwe cup ad lw upply vlae. A
he feedback ha a acve elee he feedback lea ad [5] wa deaed ha f pecfc cd f cllec cue f he feedback a cpea f he leal d duced by he aplfca elee ex.. Aaly f evy The e fac baed f he ucue fue ad he del ued e hw fue. Mdel - The ub dex cepd he a a ad he ube he feedback e. Al he eal paaee ae hw a well a he vlae ad cue e uce. The del fue afed he del he fue de ba he e fac.. Mdel dfed e he e fac Whee: Slv he equa ye f he p ad we ba upu e vlae ad we ca appach value lke hw equa [ ] Becaue he upu eace all he feedback a ceced c cfua we ba he equa we ca ee ha he aupu e depede f he a. The cbu he upu e f he aplfca a veely ppal wh he vlae a pe ccu f he feedback a f ha eceay de h e uch ha a vey ex he u. The abve-eed ple ha cea deee f e cpea duced by he aplfca a ex ce he eal e pu afeed aplfed upu [6]. ally he e fac ca be calculaed wh he e he upu f he aplfe caued by he eal e f he al uce. Ad he e fac N Pceed f he 6h WSEAS eaal Cfeece Appled fac ad Cuca Eluda eece Auu 8-0 006 pp6-0
Subu he expe f he heal e we e f N 5 ally he equa 5 hw ha he e fac depede f he a f he aplfca ae ad a he feedback a ceced c cllec cfua vlae a al he u. al beved ha aplfe f hh evy ae baed f all eal eace f he al uce ad f hh apedace a.. Aaly f leay The d ad d afe fuc f weakly lea ccu wee baed u ucual ehd aaly [7]. 6 7 } 8 Whee ae he h- de afe fuc f he aplfe wh feedback f he feedback blck ad he aplfy e whu feedback epecvely. Becaue he lea chaacec f he feedback ccu ca be chaed by dfy he cllec cue f he feedback a we ca elec e lea chaacec f he feedback ccu ha cpeae he lea chaacec f he aplfe fulfll fuhe educ cpa e baed whe pave feedback duced. The cd ude whch he lea chaacec f he feedback ccu full ake up f he lea chaacec f he aplfy blck ca be baed decly f equa 67 ad 8 hey ae: 9 0. Expeeal eul Tw aplfe ucue wh feedback wee de acve ad pave feedback wh he ae cllec- Pceed f he 6h WSEAS eaal Cfeece Appled fac ad Cuca Eluda eece Auu 8-0 006 pp6-0
Pceed f he 6h WSEAS eaal Cfeece Appled fac ad Cuca Eluda eece Auu 8-0 006 pp6-0 ee vlae ad cllec cue. The e fac he aplfe wh acve feedback 0.5 db alle ha he aplfe wh pave feedback a 0. A f cllec cue cd. The a ad e fac hw he fue..5 efeece: []. Pea Ne ecev Sye Jh Wley ad S98 [] L. Ble. D. Pllad. Pyalk 50 Ω Ne ac db.5 0.5 0 8 6 a db 0 5 50 75 00 50 00 Lad eace a A cve eedback a P ave eedback N P ave eedback N Acve eedback 0. a ad e fac f bh aplfe A we ca ee he a he acve feedback alway bee ha he pave e becaue he acve feedback ewk lad le he aplfe due he clu f a acve elee. ally we ca beve ha he hd de leae ae educed whu affec he ecd de leae a wde eval f fequece. Cclu The acve feedback aplfe pped pee d leay ad evy peface aa he pave e. hw cpably wh lw vlae upply. The cd pve he e fac he aplfe wa baed deae ha he e he upu de deped f he a f he a aplfca blck we ca e e a whu affec e peface. Thee al ca be ee ha ude e cpea he hd de edula pduc ae educed ad he ecd de e ay whu chae. Ccle f See-eedback Aplfe EEE Ta. Mcwave They ad Techque vl. 7 N. 7 999 p. 97-978. [] C. D. Mchebache Lw Ne Elecc Sye De Jh Wley ad S 99. [] J. Mlla C. C. Halka eaed Elecc: Aal ad Dal Ccu ad Sye Mcaw- Hll 97. [5] óez llaueva H. Jadó Aula N. epky ealeacó Acva Leal Pea Cfeeca de eeía Elécca CNESTA Sep. 995 p. 80-00 [6] H. Jadó Aula E. A. Adade zález. ubde Sáchez J. Aula Teea ac de ud e Aplfcade c ealeacó Acva Cfeeca de eeía Elécca CNESTA Sep. 000 [7] H. Jad A. Sucuy Aalz Se Maly Neleyu adekhca N. pp.5-0 98 [8] H. Jad A E. A. Adade zález. ubde A. Tad Médez M. eye Ayala Wde Dyac ae Aplfe f Peal Sye eacal
Pceed f he 6h WSEAS eaal Cfeece Appled fac ad Cuca Eluda eece Auu 8-0 006 pp6-0 Wclaw Sypu ad exhb Elecaec Cpably -5.00E00 -.00E0 d ad d Ode edula Pduc c 0. A 50 Ω -.00E0 0 -.00E0 0-5.00E0 0 DM db -.50E0 -.00E0 -.50E0-6.00E0 0-7.00E0 0-8.00E0 0-9.00E0 0 DM db -.00E0 -.00E0.00E0.5E0 6.E0.58E0.98E0.00E0.5E0 6.E0.59E0 equecy khz.98e0.00e05.5e05 6.E05 DM Acve eedback DM Pave eedback DM Pave eedback DM Acve eedback. 5 Thd ad ecd de edula pduc f bh aplfe 5