DE1466163A1 - Automatically tuned high-frequency circuit with an arrangement for automatic gain control - Google Patents

Description

Automatically coordinated ff ochfroquen $ c * elution with one Arrangement for the automatic Veret% sknugsregelun4 The invention relates to sine.Schaltung With a Arrangement for automatic gain control. Underneath is to be understood in this description as an arrangement in which the gain or the attenuation in one over. transmission channel is regulated automatically. The term afer # Strengthening'.' is to be understood here in a broad sense, go that the case of damping, i.e. a negative distortion ' is included in it. The invention particularly relates to an automatically adjusted High-frequency circuit with an arrangement for automatic Gain control, for example for an automatic abeatimaten transmitter or an associated Aussteüerua go - .Facility. In known arrangements of this type- the Voting takes place automatically, if necessary, under the control by a tuning signal, which is supplied for this purpose during a tuning process. The task here is usually to set the gain of the circuit to a value at which a desired output power is obtained. This gain setting is usually effected during a tuning process with the aid of an electromotorically driven damping controller which is arranged within a transmission channel - and whose motor runs during the tuning process under the control of the level of the tuning signal, which is measured at a suitable point within the circuit, whereby the motor reduces the setting of the damping controller until the level of the tuning signal mentioned has the desired size or sizes at one or more measuring points. After the tuning process has ended, the attenuation controller remains in its attained setting until a new tuning process occurs. This mode of operation described in its main features - the switching sites of gain to a desired value during the coor; mrorganges.und the Stehenlassen_ at this level between the tuning operations --generated instead of a continuous' automatic setting of the gain due mainly DES applied because in In many cases, for example in the case of transmitters for single sideband operation, there is not always a fixed signal level within the arrangement that is closely suitable as an output level for the measurement for the purpose of automatic gain control. The principle applied here that every gain made during a tuning process »: -. set remains unchanged until the next tuning process occurs, but opposes the use of any other arrangements than the electric motor-driven adjustable damping device for the changes provided. Mechanical drives, for example motor-driven arrangements with mechanically moving switch parts, are, however, undesirable because they are generally heavy and require a large amount of space, because they also produce undesirable inertia effects and require care. The basic task of the invention is to avoid the disadvantages of the mentioned arrangements through the use of mechanical devices and to provide an arrangement for automatic gain control for the use of an automatically tuned high frequency switch , 3.n. which no mechanical devices have to be used and which nevertheless meet the operating requirements of an arrangement for automatic. Gain control ir: satisfactorily fulfilled, the setting of which takes place during a tuning process and then stops at the value last reached within the interval between two tuning processes. . = ia,: # ir.ar oR @. @@ ettllt @. @. sb, @@ rsti @ rt @ Hoch @ r_t @ uem @ rsatra @ iu @ s reit . : an arrangement .1ur -selbrttütisen @ iratitrknnrsrer.iti `* ixebe aido Nibrichbi vbp ie f) bertragunksve; e in series liiroiedetk, on .. ' unites vorbetiamete Vorit & * rlcunbzW. , Dbüaptunr f # st oinrertilitoh '' " Mares keep! with @Oinem comparator surr while äeü Abot tm w- proceed n su causing @erleich the fo @ eln dis about the -; onw "ioa S tufan Transmitted Signsles with a Nor ma lperel . aia @ e3gnauug @ iamag. a .4eieindrisbr, * um oias42A «R1 *"n-; to41-, sur hltVidullea $ la @ li> at the ver »tiir%, Tunt dR '@ * e ne> tbten evil: `urineu from ** ei rrrehiederea 4th @erldn @ b.ebtehendbr, Re iOtrsobqrltet- and a reu dera »Xn @ en t @ eap. @ diä @ @@@ re @ rd @ t @@ A @@ rtrrsnses s..t @ R @ t. @ et "te @: .. Soltwitw # @@ s @, j iepwäRR @ w'e @ chii @ i- <delr @disterrabatter @ is @ r 'volge . @rai> ät 'tln'n-i>: fdcio # ct @ .wirohslcAe die Verst t a bsw. ätupi, @@ 'oiri @ iie @ is @ ihulturrS .ailar ~ tufen through, your inandee # . ftri, si @ tla "lt.trütsllung uins # inor a few steps to the suitable * der ## Nofi.k V` rstgrkunreo buu`: l.b94 * n during an '.Abstisae- ': >: es @ .icttittx e se aalen "is changed to 4 no Radei ' fe @ ir '$ @ lrasle @ wau üvtilwratoxeiniab in a passing by t _. $ isi4? pmjK, 'Norrailperol #teht -und der _ "aparator intol, oe- , iLt " ae0 # t @@ tiidl; sbe by .the aforementioned switching means '1 @ rirt @ ah t .. ..: Precautionary action did that the Stillote rte #I m btl44ädd vorbe @@ iwr @ te H @ rg # ibuih, S .die 4113tbätlßf @ d @@ r beid, R gltta Peset. wy. :: ... According to a further development of the ir! Ludun4, the unrittnlbiu r, to cooperate with each other that they , depending on their # iu * tell = 4 dureb, the Director: ebalter eatireder. die bärpt = 4 'bsv. the Veretärkua Zero or / a 'Ditptwxg bsw. @ Yeräterkin; have, welih # door each of the stages mentioned, ewsen o 5 rn. the eru $ e mare des Rei. @ Aaas.tial, tug, -. ür: wdeaatlia "hen the 'second eight, ' but kutre = if greater than . as ` the second gate4 of the bgheson damping bsW: VeraturkunS; the ' in ., that. noihensohaltuetg @rorsuagehesideu l @ ty "# is. . In a preferred from CUbs etoeiner - Scbiltu uar the JCrfindun; can the Rsgiet * rrcbirlter. and the aorparitor '. so designed siei @ a that this is done by the switching means d1ug Register baiter sufgedriiakte Polger xoa. Puleea die Verotgr1 mw or the attenuation of Re: thenechalt "g #ehsittweiee either enlarged or: yerringer., t,. j !. nao>deqi; the 3ignelpexel M @. .. is small or too large in relation to the norawl level. . in an ei »tacbl w en Au» lübsgaggrtorm kUsnea der Gegi »t« r # ecbwlter and the £ »parater dertartig awgebillot , » a, Mg bbir ~ -``iiuo doa.A@i »tinrogeee the iomparater den 9e # iat`r- ecb @ a @ ter in the jeatie iinbtell = 4 snruoktanks, ix which the Reinforcement bsx. Dürylung dir ranks on one of the reachable ilttrnrerte etgea-tellt ir <t, and that the ' pulse train . then the Mgietereohaltir go eteaert # that said . Reinforcement or "rpfwrg" in steps towards the other accessible txtremertea is changed. In eizi4r 'another simple Auaführungsforn the Regtates- can Schwlter and the comparator so well educated no that at the beginning of the Abetimrvorganges too close to one of the achievable 4xtrerwerto lying Veretürkwng building. Dümptuag the friction holding, @ in which the two levels are fed to the correlator einggpgoa. . in . weaentliohen would be merged with each other, der, Re; ioteraa #% alter, by the corparator and da & from her genteelerte Sehaltrittbl desarrtig 'only postponed that dis iters.lilg den..nxtderen attainable Zxtrermrert aaniamt, vorauf der itigüt @ rsaa l ter rdu r c # die P uleenue in, iabrittweiaer gudg the fbrotitrspug in the direction of the first named Sxtren- ' Values are rti eatellt. , betwbrafot one @ er # ttt # o @ a @ t n @ dh i er. * rftlr'e jä t'it 'a "tßxca4e from tp40 # or, ' Veretatat "," lohM eoilreler .im »eeatliehen die bsil * Verdlt, 1, * dl *, a Das ", bax. VerstM wetar «t- **] Lok * üsietaatlioben polt. @ # o Sroß is. (but never more. * In tippelt ob 'big) i # der äldtWer- re. # bsw. - Yer @ rf t @ d4r @ 'duir # die d. @! Rrl @ tuldrdal ## @ir! 1 # @ ' .,. D .i @! , 1or. @ Aijitrta11 'am " rlciasreOrator dtefert tibt' . Jlns @ angn # t # @ trwo =, AW11 him . * Ajpttte @indaapedld unt # rlin @ ndts @@@ xr @ onti @ vh @ ns; ylaidb @itad: 1o @ # rd @ a @ ia @ i Mitt # 1r11 # i # u, yr @ @ 1wa AW r bh the chain -from Dänpi'e # lt Front xxrk.> Back: ds # xa.pc>x.;.; T .. Koup @ r @ t! S; as . 0 # e. äi eAb e size 6e stuoutuhreb. to he grit iron 1lorswalpt. ewtü! h # t. Furthermore, the switching council is not which by ch an abatta »il * MW *" an abatlamor4a zW lt tu Tati & klt .., 4 # * etgt p t rdipa * around the, oi dhatsn @orparator ' withstood *. The tlder of the "dt * rnob4ltern lind binary 9ohaltei.te.:ttd.'@! # «!!. jtdet a '. intelligent, who in i eü » a # noävaltenea DiEaple @ r # bsx: @. Veiras @@ Arslut @ so üant # llt she either 'die Y ir mtdrlwou bsw: Däund Null or den ` greater ext eiasttllb * yr # n ''Dämpf'unla- bau. Yes strenglcunpvert besitsext. A pulse generator supplies the aforementioned register switch with a sequence of pulses in order to change the working conditions of the individual damper or intensifier levels in subsequent steps, starting from the aforementioned basic setting. A size by an electrical output de "comparator in activities set auxiliary device controls the transmission of Pulse.von said Pulsquell® to the register switch so that the pulse train. is interrupted as soon as the level of the signal transmitted via the attenuator or amplifier stages at the input of the comparator is essentially equal to the normal level. The circuit may also include means, which are set by the initial output of the comparator mentioned in activity if dieser.beim beginning of a Äbstimmvorganges is made effective, to bring the register switch, in that setting, wherein the cascade of the damper and Amplifier stages is set to a predetermined one of the two extreme values of the total attenuation or gain , whereupon the auxiliary device controlled by the output variable of the comparator causes the total attenuation to be set in the direction away from this extreme value. Optionally, the circuit can also contain means, the function of which depends on the sign of the relationship between the two signal levels to be compared at the aforementioned comparator , which at the beginning of a tuning process Be made effective and the register switch just diejeaga Return position, in ' wölcher dir. -K "kade der Därpßer- or: Amplberstufon a vorbeatimtott of the two fix values of the total attenuation or displacement, however in the event that the, D & gfung bsw. '' Reinforcement at .start the Tuning processes' too close to that of the extreme values lies to the ring position on practical equality of the two Level at the comparator sist can reach such that the Gain or attenuation in the direction away from the gena nn th another Extreaowreet is changed. The invention will now be described with reference to the drawing described in more detail, which in a simplified block abbreviation # image a preferred embodiment of the circuit according to the Invention represents. In the circuit diagram _ is between the input terminal 1 and the Output terminal 2 a signal transmission okaual @ in a Roch .. frequency switching arranged with automatic tuning. For example, this can be a Verot $ irkerkanal in a self- tati. 111 be approved high-frequency transmitters. In this channel is in addition to the usual .'feiss pre- stronger stages 3 and 4 a damping device 5 is provided, which is a cascade of adjustable steps a, 2ae 4a . a. 2% .. contains. The Dimpferatufs a can be set so / will; that they either essentially reduce the damping Nnli,. or one. Attenuation; in , the size of the vorbetstiauteus value a . effected. The Däppferetufe ga can ent »dsr v.os_ . den .: Vext zero or of deui value 3a cause. 'Däi., Dä'eatufä ' 4a: xaun. Either one, attenuation of the value . N u @ ao @ vgWert cause. The Raihei continues so that the pilot! Dialgfer-. level a damping 'either of the value zero or of the value 2h, .a * causes, where n is the number of damper stages: t .. @ The ... Control of the individual damper levels is, as shown, through the individual stages of a multi-stage binary register schalters.6 controlled, which has just as many levels like damper stages available bind. .The, signal oscillations that the damping device have gone through, will. at any. appropriate point ... $ echecks the in. the. Circuit drawing with? .Öenelcänet .. is, uied "- .: denarian. ßingng.'ei h os Keisparatore B. fed ,, .ia. whichä_ i.är , Level _ is compared with a normal level, - the , in irgeudiiäfr. ,. gebrituchliohsn way. is generated. This is Kospsrator irr Normally ineffective and only lasts for the duration an AbetiM process. made effective. This is done . if a tuning signal is routed over channel i-2 and also: ei @ S $ gnal, which is a command to trigger the .des .: @ Tuning process ps, .shows, is fed to terminal .9. This Signal_kann be produced by per se known means and from your of circuits; automatic Abstimmunf be known type. When this signal arrives, the comparator emits a return coil via its output line 10, which brings the register switch to an initial position. For example, this starting position can be such DAB .all damper stages provides einge- to their maximum attenuation In such an arrangement will be too small compared with the normal level as a direct result of the signal level at the, point 7: Demertnnrerhead the comparator via its output line 11 emits a control signal, which is a pulse generator 12 in action, which can be designed, for example, as a multivibrator with a frequency between 1 and 10 kU and which presses a sequence of pulses on the register switch 6. the device reduced in stages 5, until the point at .7 corresponds made and the comparator 8 supplied signal level in essential equal to the loan-Normalpel; ei. At the end of the calibration process. the comparator 8 becomes ineffective and the damping setting of the device 5l remains unchanged until the beginning of the next tuning process. Panlc der, bie # r «, b4racht dc r . g inriabt s icwsn. the D> iaptuag , nib, offnes.; @ n @nriatiewabersiedsost * "er rerileIahs- cry Utiuea xi@hl.xea D'lriutea and Äaboi urieiteln solbsttäti #p r #inatellung ealn ante :. NU from Annäeritg on the 4th "night" festers are received, there . Worth . a Ut verdex came. Dis dr ^ fiadunt ... is not to the special & aeebm. lishait besabs ä nlci ,, xelbbunter sossvah »aut! i s isi b @ soäiiebbn. Btiäpidn »iae luain. in an abihertea Matühr vp & ifor * .delr., & Mritmritor rucht so susaebiliet in, since he. every time boim * tssohiinen a voting fee taa, gg a i üolcatelip «ls - over its singing slide 10 mm ir_torothilter . .6 404t, whs serve in a @usgaagsstellnag , su loyal to. Wolqhär all Di .o horse mares. on their maximum . Diteptung 'are set. The comparator was rather like that be designed that when iintretten a Abstiaetelrles . at 9 it only . then the iMoitsteUtwtU mentioned above , Leitwu i0 when the signal level is too high here is. If the. wbstiarebstobl > am. dealing 9 eintrtttt, the Level on point. .7 answer . right, too low or sat high be: i ':: nine t @ richtiS ibt,. the Komparatoz remains out of action, like rrd @ er. wrnn-`eran `` is dull, romparater gives 8 .but , the * line @ 1 1'.eiu # 6tenersägnal from through which the Pulsssnet. 18 .reranlaetzt,: will, the register shoulder 6 a To push the sequence of pulses through which the Däaeptsag der Facility 5 is reduced in mares, as previously seen .. was practiced until the level at 7 i »tnontliehen equal deal . Is normal pork. Before if the level at T is too high to quench the dead the xomparator den ig egisterachalte 6 About the Leitaa to au! die-Aungangsstelluag back. This becomes bswirit, älr.dr! Signal level at 7 is now too low and the. BOwparat 4w dar .. accordingly a gradual wsrabsstspmg der @ltrpflnt; the Setup $ causes . until essentially the riabtisd Signal level is reached. . In the practical one, one is striving to do something be the need . the observance of very narrow Tolsrwmem ' in the attenuation values of those stages which dis. & r »' Cause dampening steps to avoid. These are the mares near the exit end of the hapler kaslcade in the aahaltstt * For this purpose the greater value of the two is oinstollbar " Däapfungsverte a little bit small for each ditbaer level of pamper measured as double. rfert the higher damping day of the medium » bar pre-cast damper statute, ued. swar about the affair; still permissible assessment error fer D "ptum; der eiamela" t Stages.

Claims (1)

P atentan »prü ch e- 1 Automatic. coordinated IIocblreqitensaabaliuna with a Anoränu # g .suW self-acting amplification, which a plurality of in-transmission paths in series, BSW to a predetermined gain. Contains attenuation permanently set, set stages , with an xonparator snr, to be effected during the tuning process to compare the level of the signals transmitted via the stages mentioned. a normal level, characterized in EIA much »gli.edrig@r, from individual elements for the individual adjustment of the Verstmrkung or damping of the said stages (a, 2a, 4a ....) existing on a different one of two values register switch (6 ) and a switching means (12) controlled by said comparator (8) during the Abätimvorganges are provided, which the aegisterschalter presses a sequence of pulses through which the amplification or: attenuation of the series connection of all stages by successive gßnstelluni individual stages to the appropriate two amplifications or dumps, is gradually reduced during a tuning process until the level of the signal at the sensor gear is in a predetermined relationship to the normal level and the comparator steals the pulse as a result. abgebe throughput interrupts said switching means. z) Bchaltn_ seiti: @ Rx @@ pit @ ti_ i., characterized by diA die the predetermined relationship that forms the gi tillmet »n &r'id r itnriam die ra toitrhbit brtdsr - # 0'e1 'st, 3i circuit »web claim 1. or Z, characterized,. dab w mutable successive stages of the rows db . switch whether beuwsren are, @ -da; 8 rit depending on their participation by the Rsgietirreöhalter either ' .the . Dtupttuns bawtox a tärktNull or a damping bmw. Have reinforcement , rrelahe for each of the above Mares, awgenonren the first stage of the series essentially twice as much, but by no means greater as near to the time . the ; h @ ihiren pf us' b »sw. Vera turkish is the previous level in the series "" altmg. 4) Circuit according to one of claims i bin 3; characterized by indicates that the R * SisterashaIter. and the comparator of the- are designed in a manner that the von dost switching means deal Register switch pressed fold tone pulses the starkuü4 baw. the . Däapfuag der, series connection step by step. . Either- type of dismantling or reduced 3e after the signal- . level too small or too large in btsus to the normal level . is. ' . :% . ß, 'ung . äea1 @ eaen @ '. spxo,; ii to didh frke = - '. '- -ditr "' r the: = v @lp o r "i ab * l @i C. : Shepherd wib @ v` r. , r. . Mini` # a @ 'rbr @@ r, arat or @ a @ f 4 @ 1. wrc h dl'tes @ .ri üi # 'Unr., Ic', r _ s 11tp3 "aE!% R @ & sita # 1 @ .tttrt; on eno0 difir reach & haron dee # diPuls o. @ 'e @ araü . .gxrwrieriri .txei.it is , x @ # _ den .tr @.> rahnltiir .Ruot ,. . e dis .gnnaunie Pier- ' oe * n 7t. ai .r .. '. . 4th marriage . w .3.- c @ rdura .. applyn @ and `der : ä # o-, e @ ior . . # the- ad; @ dh@s.i_ 4a @ ei'xr .äse .ri @ rxr @ r- eu : nahismr, d @ rxi @ 'e.chsrea -girarorte .. # ,,, sgrwl '. He, r @' ARSs rlcong. # 'bsswop us is # at "e baideb" peSeil ".in:, tän äoOparatorein g ü #gen im xert @ en..cheyn .rie; eixrspuer. @ & xnJ.4i will it (irderi, dar # ie_ @ r! @ ca.a @ r dUrah .dön comparator. and that from him ; est @ tterte, switching means is reset in such a way that - the erstfi k Ung dun assumes xaderan achievable Extrsantert, Worm the reai: ateracnalter. By the pulse sequence in step- Direction of the first r nwnnilrn, Sxtreonrä x t «e a- neu. ' is set: . ? ) 'Bohaliung uaoh 4usprucb 3, q "r * thereby enabled- that the tü; 1edir den / Reai @ rtabaltre.: biniure @ ohaltbtl @ i @ It @ tb bind, voii @ deaiia every tds ainii @ der: In tLsih.rr. gidabaxtbteen '' ; Dä @ * pf @ r- .; bsar .alwa @ tarkass'ea. @ r @ 'snsi.llt, cta @ a * _iint # " , neither @ the Veri'täisg_. bew. Däspf @ iz lp zero or the grt1Jlex o ü ' adjustable Oilrprungs- bitr.-ri@R! Krkbnge @ eri. . 8) .. switching according to 4 * n requirements,. : oeä :. 7 t. there . through. gskemsetobnrt that they have one at the beginning of -Abetimawox 4, g nges through, -9 IM. electrical output de; öoepbratore in action set @ ilfse # .ni "ihtung,. @ nthält, .xllab. the ] register switch back so; daä the 9.e ibenschaltua der , ._ Damper or Vers_tärkerstüfln tv f a vorbestiau ä teri. of the two extreme values of their Däaipt "; bnw. Verstxrkt4 is set, and on it through the Output variable ... of the 1 comparator dZc; gonenuten steps on , one of the said Extre * we4t Veg@äerierte.DWrpßtisa# bzn. Yerstxrkuagswechsel einatiit._ - 9 @ circuit according to the A »proverbs 6 and 7, thus 4eke = - . eo. bfr. , Be;, xra . of the voting organization 44 es by e @ ue.elekili @ e, Avi @ r; Asgs @ i @ o the go * parwtors in 'Täüc' @ til * te, ... a @ t da) a Vormeichen of the Diftegceus . orriavben; dem = I3iga a lpe; l and the ilormalpegehan den ixz @ # . 4tugen desr xomparwters tmpli; »dlirhe auxiliary equipment &, oat @ r held.,. aeltthe_Iden kegieterscbalter so that the. iteibiuothaltwa i der Dippfer- bsx. . Amplifier studies ay @ t: vi @ nin rorbestiwutep of the two äxtromwertb: theirs Däpiu @ sg t @ zK. Amplification is set. however in Trap; .. dag die'dimp £ ung bgw. Reinforcement at 8e; inn des. Separation of the processors close to the other of the lixtra belts lies to the sinstallupg., on practical equality of the '. .. to be able to reach both .psgel; at the tompwritor entrance, @ Suchi4, the reinforcement or Däirptung. in that direction weighed .rag the whole = th sadervn ixtreavert- is changed . @): 8 @@ fw @ tuoS e g ch.iinew.üer An # prüche i to 9, which means that setobnet, which is what the series connection levels name sx @ d ,,. dad, @ t. Fall of your position on the bigger one dex, i @ el # de yof: @ tetiatep_.Dilu @ g @ upse # bau. Reinforcement 'perte 4 $ t "pt" i .box,. Reinforcement of a. Level with one @ $ ere Wt;:. d Dampma reinforcement a little less he. eia . dtrt, itwa. " tu s- blw. - Veretürkungaxortes .s el @ it elbwr: previous level. .t @ rhaiih la, @ fdabsk @ nxxs @ icäxr @ t, -frg ', @ rar ' i @@ rr. "1 @ fnnsa- bsx. ot . ,: the »# e` risid. Ysictts dr @ inssls @ xt @ `1 @: Rr