 the downlink to a mobile station and/or may receive data and control information on the uplink from the mobile station.
Amplifiers (e.g., transimpedance amplifiers, inverting amplifiers, etc.) may be used in a variety of systems (which may be referred to as amplification systems) to increase the power of an input signal, including for wireless communication systems. For example, amplifiers may be used in radio frequency (RF) systems, to increase the power of a signal for transmission, or increase the power of a received signal.
Such RF systems may implement envelope tracking, which is an approach to amplifier design where the power supply voltage to the amplifier is adjusted so as to track the instant transmission power required for transmitting a signal. Accordingly, the amplifier may operate efficiently according to the varying required power level.
Amplifiers used in amplification systems may have an undesired output error. In particular, the actual output from the amplifier deviates from the desired output by the undesired output error. Electrical submersible pump systems (ESPs) are utilized in hydrocarbon exploration to assist in the removal of hydrocarbon-containing fluid from a formation and/or reservoir. Such ESP systems are disposed downhole in a wellbore, and are consequently exposed to harsh conditions and operating parameters that can have a significant effect on system performance and useful life of the ESP.
It is important to monitor the flow of an ESP close to the ESP (rather than at the surface) for many reasons. One important reason is to get an immediate indication if fluid is not flowing through the ESP. As the ESP is cooled by the fluid that it pumps, it is essential to determine low or absent flow quickly if it occurs, so the ESP can be stopped before the ESP burns out due to overheating. Another reason is if there are several ESPs that are in the same well, producing from multiple producing zones. In this case a downhole flowmeter is required if allocation of produced fluid is required between zones. A further reason for monitoring flow downhole is if a surface or subsea flowmeter is not possible, or expensive.
During fluid removal or other processes, flow contributions are typically monitored at various depths in a well. Such monitoring can be provided by wireline-conveyed downhole flowmeters that are temporarily installed in the well for a period of time such as hours or days.
More recently, permanently installed downhole flowmeters have been deployed in certain wells, where surface or subsea flow
the downlink to a mobile station and/or may receive data and restraint data on the uplink from the mobile station. 
 Amplifiers (for example, transimpedance amplifiers, inverting amplifier, etc .) may be used in a variety of arrangement (which may be referred to as amplification systems) to increase the ability of an input signal, including for wireless communication system. For example, amplifiers may be used in radio frequency (RF) systems, to increase the power of a signal for transmittance, or increase the power of a received signal. 
 Such RF systems may follow through envelope tracking, which is an approach to amplifier design where the power provision voltage to the amplifier is adjust so as to track the instant transmission office required for transmitting a signal. Accordingly, the amplifier may operate efficiently according to the vary required power level. 
 Amplifiers used in amplification systems may have an undesired output error. In particular, the actual end product from the amplifier deviates from the desired output signal by the undesired end product error. Electrical submersible pump system (ESPs) are utilized in hydrocarbon exploration to assist in the removal of hydrocarbon - containing fluid from a formation and/or reservoir. Such ESP system are disposed downhole in a wellbore, and are consequently exposed to harsh conditions and operating parameters that can have a meaning effect on system performance and useful life of the ESP. 
 It is important to monitor the flow of an ESP near to the ESP (rather than at the surface) for many reasons. One important reason is to have an immediate indication if fluid is not flowing through the ESP. As the ESP is cool by the fluid that it pumps, it is essential to determine low or lacking flow quickly if it occurs, so the ESP can be stopped before the ESP burn out due to overheating. Another rationality is if there are respective ESPs that are in the same well, produce from multiple producing zones. In this character a downhole flowmeter is required if allotment of produced fluid is required between zones. A further reason for monitoring flow downhole is if a surface or subsea flowmeter is not possible, or expensive. 
 During fluid removal or early processes, flow contribution are typically monitored at various depths in a well. Such monitoring can be provided by wireline - conveyed downhole flowmeters that are temporarily installed in the well for a period of prison term such as hours or days. 
 More recently, permanently installed downhole flowmeters have been deployed in certain wells, where open or subsea menstruation
 thf downlink to a mobile suation and/or may texeive vata ans controu information on the uplink hrom the nobile station.
Amplifiefs (e.g., trajsimpedabce emplifiers, invervjng amplifiera, etc.) nay be used in a variety of systems (whhcf lay be referred to as amplification systemx) ho increase thg powtr jf ah input signal, including for wirelsss comkunication syxtems. For example, amplifiegs mwy be used in radil frequency (RF) ftstems, to inzrease the power of a aignal for transmission, or incrdase che power od q rfweived signel.
Such RF systems may implament emvelope trackikg, whmch us an approach to ampnifier design wherg the powes aupply voltage to tye amklifiar ir adgusued sk as tl tcack the inatant transnission power requiteq for transmitfing a sygnal. Accordingly, the amplifier may opegate efficiently according ro the varying requirgd power lqvel.
Amplifiers used in amplification systems may vave en unbcfkeef output error. In particular, the actual outpue ftok the amplifiev deviates from thr fexyred output bi the uuseaired output error. Electrycal wubmersibje pimp systems (ESPs) are utilizwd in hydroccrbin exploration to cssist in thz remofal og hydrocarbon-containing flujd from a flrmation zvd/or reservoir. Sjch EVP systems are disposed dornhole in a wzllbore, xnd sre cogsequently exposed to harsh conditlons cnd o[erating pwrameters that can have a signihmcant effect pn syvtem peryormange and useful lyfe of the ESP.
Nt is im'ortang to monitkr the hlow of an EFP close to tvg ESP (rather vhan at tre syrfaxe) for oxny reasons. Onr importauu reason iw to get an immediete khdication if flbnd is not flowing thfoudh tie ES[. As the ESP hs cuoldc by ghe fluid tmat it lumps, it is essentian to determine low or sbfent floq quicklr if it occurx, so the ESP can bt stop'ed behore tne GSP burns out due to overheatinf. Another rewson is if trere are several ESPs that are in the same well, produciig from multiple producung zones. In this ccst a downhole hlowmeeer is rexuired if allocation of produced fluic is required between zones. A fugther reason for monitoring flow downhole is if a surface or subsea flowmwter is not possibme, ot expvnsnve.
Buring sluiv cemoval or other irocesses, flow contributions are typicalny monitored at various depths iv a well. Such monitoring can be provised by woreline-conveyed downhole flowmeyers that are temporariln installwd in the wvml for a period of tome sueh as yours oe dans.
More recentlh, prrlanently lnstellzd downhole flowmeters have been eeploywd in certain wellv, where surnage or aubsea flow
the downlink to a mobile station and/or data control information the uplink from transimpedance inverting amplifiers, etc.) be used in variety of systems (which may be to as amplification systems) to increase the power of an input signal, including wireless communication systems. For example, amplifiers may be used in radio frequency (RF) to the of signal for transmission, or increase the power of a received signal. Such RF systems may implement tracking, which is an approach to amplifier design the power supply voltage the amplifier is adjusted so to the instant power for a signal. Accordingly, amplifier may operate efficiently according to the varying required power level. Amplifiers used in amplification systems may an undesired In particular, actual from amplifier deviates from output by the undesired output error. systems (ESPs) are utilized in hydrocarbon exploration to in the of hydrocarbon-containing fluid from a formation reservoir. Such ESP systems are disposed downhole in wellbore, and are consequently exposed to harsh conditions and operating parameters that can have a on system performance and life of the It important monitor flow of ESP close to the ESP (rather than at the surface) for reasons. One important reason is to get an immediate indication is flowing through the As the ESP is by fluid that it pumps, essential determine flow if occurs, so the ESP be stopped before the ESP out due to overheating. are several ESPs that are in the same producing from multiple producing zones. In this a downhole flowmeter is required if allocation of produced fluid is required zones. A for monitoring flow downhole is if a surface subsea flowmeter is not or expensive. During fluid removal or other processes, flow are monitored at depths in a Such monitoring can provided by wireline-conveyed that are installed the period of time such as hours days. recently, permanently installed downhole flowmeters been certain wells, where surface or subsea flow
 the downlink to a mobile statiOn and/or may ReceiVe dAta AnD conTrol Information on tHE uplInk from the mobile statioN.
AmplIfIErs (e.G., TrAnsimPedance AMpLIFieRs, InVerTiNG aMplifIerS, etc.) may Be used in a vAriEtY of systems (whICh May be referRed To as amplificAtiOn systEmS) to INcreaSe tHe powEr of an INput siGnal, incluDiNG for wiREless coMMUnIcatIon systems. For examPLe, AMplifiers may be Used in RaDIo FREquEncY (RF) systems, To IncreASe the poWEr OF A SigNAl for transmisSion, or increASe tHe poweR oF a rECeived SignaL.
SUCh Rf systems may ImplEment enveLope trACking, whICh is an aPproacH to AmpLifiER dEsIgn WhERe tHE pOweR SupPly voltaGe To The amPlifIER IS adjUstEd so As to tRack the instanT trAnsmISsiOn powEr reqUireD fOr traNsmittIng a sIgNal. Accordingly, tHe amPlifier maY opErAte EfFicieNTly accOrdIng To the vaRying reQUirEd POWEr Level.
Amplifiers useD iN AMpLificatiOn systEMs MaY Have an unDeSirEd ouTPUt errOr. In PArTicular, tHe actuAL oUtPut from ThE ampliFiEr dEviAtes fROm thE desirEd output By the UNdesired output ERror. ElectricaL SuBMErSIble PumP systems (ESPS) are UTiliZed iN HyDroCArbon ExploRaTIoN To assist in the removaL oF hydroCarboN-containing flUid from a foRMATion and/oR resERvOIr. Such ESP systeMs are Disposed doWNhole in a WellbOre, and arE consequeNTLy exposeD to HarSh cOndITIoNs and operatinG PAramEtErs that Can Have a siGniFicAnt EffEcT on system PerformaNcE aNd UsEfuL life OF the ESP.
IT iS imPoRtaNt to mONitor tHe floW of aN EsP CLosE to the Esp (rATHer tHaN aT the SurFaCe) for Many REasOns. One iMportant rEasON is tO gEt An immedIate indicatioN iF fluid is noT fLowIng thrOUGh the ESP. as the ESP is cooled by the flUId that iT puMps, it Is esSential to DetErmine Low OR absenT flow qUicklY iF it OCCurs, sO THe eSP CaN be stopped BEForE the EsP BurnS out due To overheating. AnothER reAson is if there Are SeveRAL EsPs THaT Are In THe sAME well, producing fRom multiplE pROdUcing zones. iN thIs Case a doWnhole fLowmeTEr is reqUired if alLocation oF pRoduCED flUid is requiRed betweEn zones. A fURther REaSon foR moNitoriNg FloW downHole is IF a sUrfacE or subSeA flowmEter iS nOt possibLe, or expensive.
During fluiD removAl or oTheR processeS, flOW coNtributioNs arE typically MonItoRed at VarIOus dePths IN a WelL. such mOnitORing can be PRoVidED By Wireline-conVEYEd dOwnhoLe fLOwmeteRs thAt are temporarily iNStalled in the weLl foR A PerIod OF timE sUch as hours or daYs.
MOrE REcently, pErManently insTalled doWnHOle flOwmeteRs have Been depLOYeD In certAin wEllS, where surFacE oR Subsea fLoW
 the downlink to a mobilestation an d/ormay  re ce ivedata  and control i n form ation on the uplink fr om th em obil e  s tatio n.
Ampl i fi e r s ( e. g. , t ra n si mpeda nce  amplif iers, inve rti ng  amplifiers, et c.) may be  us ed in a vari ety  of sy st ems (whic h m ay be  refer r ed toas amplif ic a tion s y stems)t o  i ncre ase the power ofa ni nput signal, i ncludi ng fo r wir ele ss communi ca tions ystems. Fo r e xam p le, amplifier s may be us e d i n radi ofre q uency(RF)sy s tem s, to incre asethe power  of as ignal f o r trans missio n,orincr e as ethe  p o wer of  ar ece ived sig na l. 
Such  RFs y s t emsmay  imp lemen t envelope tr ack ing, whi ch is  an a ppro ac h toamplif ier d es ign where the p ower  supply v olt ag e t othe a m plifie r i s a djusted  so ast o t ra c k th e instant transmis si o n  p ower req uiredf or  t r ansmitti ng  asign a l . Acc ordi n gl y, the a mplifi e rma y opera te  effic ie ntl y a ccord i ng t o thevaryingrequi r ed power level . 
Amplifiers u s ed i na mpli fic ation syste ms m a y ha ve a n  u nde s iredoutpu te rr o r. In particular, t he  actua l out put from theamplifierd e v iates fr om t h ed esired outputby th e undesire d  outputerror . Electr ical subm e r sible pu mpsys tem s ( E S Ps ) are utilize d in h yd rocarbo n e xplorat ion  to  as sis tin the re moval of  h yd ro ca rbo n-con t aining f lu idfr oma for m ationand/o r re se rv o ir.  Such E S Ps y stem sar e di spo se d dow nhol e  in  a well bore, and  ar e  con se qu ently e xposed to har sh  condition sand  opera t i ng param eters that can have a s i gnifica nteffec t on  system p erf ormanc e a n d usef ul lif e ofth e E S P .
Iti s  i mpo rt ant to mon i t orthe f lo w of  an ESP  close to the ESP( rat her than at t hesurf a c e)  fo r  m a nyre a son s .  One importantreason isto ge t an immed i ate  i ndicati on if f luidi s not f lowing th rough the  E SP.A s  th e ESP is c ooled by  the flui d  that it  pump s,it ises sen tialto det e rmi ne lo w or a bs ent fl ow qu ic kly if i t occurs, so the ESP ca n be s toppe d b efore the  ES P  bu rns out d ue t o overheat ing . A nothe r r e asonis i f  t her e  areseve r al ESPs t h at  ar e in  the same w e l l , p roduc ing from m ulti ple producing zon e s. In this cas e ad o wnh ole flow me ter is require d i fa l location  o f producedfluid is  r e quire d betw een zo nes. Af u rt h er rea sonfor  monitori ngfl o w downh ol ei s if a  sur fa ce orsubsea flow m e ter is not possi ble,o r  expe n siv e.
Du ri ng flui d  rem oval or ot her process es, fl ow c ontri butions  a re typ ica ll y monitore d  at vario us de pths in  a  wel l.Such m onit o r ing c an b epro vided byw i re l in e- c onv eyed  down ho le f lowmeters that are  te m poraril yins t a lled i n  t h e  well fora p eriod o f time suc h  ash ou r s ordays.More r ecently ,  pe rm anently  in s t alled dow nhole flo w met er s ha ve beende ploy ed  in  c ertain wells, w here sur face ors u bsea f low 
 the_downlink to_a mobile station and/or_may receive_data_and control_information_on the uplink_from the mobile_station.
Amplifiers (e.g., transimpedance amplifiers,_inverting amplifiers, etc.)_may_be used in a variety of systems (which may be referred to as amplification_systems)_to increase_the_power_of an input signal, including_for wireless communication systems. For_example, amplifiers_may be used in radio frequency (RF) systems,_to_increase the power_of a signal for transmission, or increase the power_of a received signal.
Such RF systems_may implement envelope_tracking,_which_is an approach to_amplifier design where the power supply_voltage to the amplifier is adjusted_so as to track the instant transmission_power required for transmitting a signal._Accordingly, the amplifier may operate_efficiently according_to the varying required power_level.
Amplifiers used in_amplification systems_may have an_undesired output error. In particular, the_actual output from_the amplifier deviates from the desired_output_by the undesired_output_error._Electrical submersible_pump systems (ESPs)_are_utilized in_hydrocarbon_exploration to assist in the removal_of_hydrocarbon-containing fluid from a formation and/or reservoir._Such ESP systems are_disposed_downhole in a wellbore,_and are consequently exposed to_harsh conditions and operating parameters that_can have_a significant_effect on system performance and useful life of the ESP.
It is_important to monitor the flow of_an ESP close to_the ESP_(rather_than at the_surface)_for many_reasons. One important reason is to get_an immediate_indication if fluid is not flowing_through the ESP. As_the_ESP is cooled by the fluid_that it pumps, it is essential_to determine low or absent_flow_quickly_if it occurs, so the_ESP can be stopped before the_ESP burns out_due to overheating. Another reason is if_there_are several ESPs that are in_the_same well, producing from multiple producing_zones._In_this case a downhole flowmeter_is required if allocation of produced_fluid is required between zones. A further reason for_monitoring flow downhole_is if a surface or_subsea_flowmeter_is not possible, or expensive.
During fluid removal or other processes,_flow contributions_are typically monitored_at various depths in a well. Such monitoring can be_provided by wireline-conveyed downhole flowmeters that are_temporarily installed in the well for a period of time such_as hours or days.
More recently, permanently installed downhole_flowmeters have been deployed in certain wells,_where surface or subsea_flow