DK145590B - LIFE REQUIREMENTS FOR APPLIANCES IN THE ELECTRICAL COMMUNICATION TECHNOLOGY - Google Patents
LIFE REQUIREMENTS FOR APPLIANCES IN THE ELECTRICAL COMMUNICATION TECHNOLOGY Download PDFInfo
- Publication number
- DK145590B DK145590B DK480878AA DK480878A DK145590B DK 145590 B DK145590 B DK 145590B DK 480878A A DK480878A A DK 480878AA DK 480878 A DK480878 A DK 480878A DK 145590 B DK145590 B DK 145590B
- Authority
- DK
- Denmark
- Prior art keywords
- series
- adjustable
- capacitance
- potentiometer
- capacity
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 2
- 235000014548 Rubus moluccanus Nutrition 0.000 claims 1
- 239000003607 modifier Substances 0.000 claims 1
- 108700028369 Alleles Proteins 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/14—Control of transmission; Equalising characterised by the equalising network used
- H04B3/141—Control of transmission; Equalising characterised by the equalising network used using multiequalisers, e.g. bump, cosine, Bode
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Filters And Equalizers (AREA)
- Networks Using Active Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transmitters (AREA)
Description
i 145590in 145590
Opfindelsen angår en løbetidsmodforvrænger til apparater inden for den elektriske kommunikationsteknik, hvis løbetidsafhængighed af frekvensen er indstillelig, omfattende mindst to hver især mellem to forstærkertrin 5 indkoblelige allpasled med mindst et shuntet T-led med en transformator med midtpunktsudtag i seriegrenen, hvis indstillelige hovedselvinduktion ved hjælp af en denne shuntende indstillelig kapacitet er kompletteret til en parallelresonanskreds.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a maturity mode scrambler for electrical communication apparatus whose frequency dependence on frequency is adjustable, comprising at least two each of two amplifier stages interconnectable with at least one shunted T-link with a mid-point output transformer whose adjustable main output by of a this shunting adjustable capacity is complemented by a parallel resonant circuit.
10 I radiokædeanlæg er det nødvendigt at udligne den hovedsageligt af RF- og MF-filtrene forårsagede forvrængning af gruppeløbetiden - i det følgende kort betegnet som løbetid - ved hjælp af en løbetidsmodforvrænger. En sådan løbetidsmodforvrænger, som den ek-15 sempelvis kendes fra tysk offentliggørelsesskrift nr. 20 39 417, omfatter for det meste et antal allpasled af anden orden, hvis L- og C-værdier er balancerbare. Løbetidsforvrængningerne, der ligner en opefter åben parabel, kan ved balancering af L- og C-værdierne i mel-20 lemfrekvenssignalets gennemgangsbånd udjævnes til en u-betydelig restrippel, hvorved et til antallet af mod-forvrængerled svarende antal spoler og trimmere skal balanceres. Denne balancering sker først i et kunstigt radiofelt. Hvis radiokædeapparaterne nu indsættes i et 25 ægte radiofelt, fremkommer der som følge af kanalfiltrenes tolerancer, som følge af antennehulledernes dispersion og eventuelt som følge af en nyindstillet tilknytning mellem sende- og modtageudstyret eller ved ændringer af sende- og/eller modtagefrekvensen påny løbetids-30 forvrængninger, der i mange tilfælde hovedsageligt består i en hældning af løbetidskarakteristikken som funktion af frekvensen. Til eliminering af denne hældning skal i det mindste balanceringen af det pågældende antal spoler eller trimmere ændres, hvilket nødvendiggør et betydeligt opbud.10 In radio chain systems, it is necessary to offset the distortion of the group running time mainly caused by the RF and MF filters - hereinafter briefly referred to as maturity - by means of a maturity counter distortion. Such a maturity mode distortor, as is known, for example, from German Publication No. 20 39 417, usually comprises a number of second-order alleles whose L and C values are balable. The run-time distortions, similar to an upwardly open parabola, can be equalized by balancing the L and C values in the intermediate frequency signal pass band to an insignificant residual stripper, thus balancing a number of coils and trimmers corresponding to the number of counter-distortion joints. This balancing occurs first in an artificial radio field. If the radio chain devices are now inserted into a real radio field, due to the tolerance of the channel filters, due to the dispersion of the antenna hole conductors and possibly due to a newly set connection between the transmitting and receiving equipment or by changing the transmitting and / or receiving frequency again 30 distortions, which in many cases mainly consist of a slope of the maturity characteristic as a function of frequency. To eliminate this slope, at least the balancing of the number of coils or trimmers in question must be changed, necessitating a substantial supply.
35 En forenkling kan opnås ved tilføjelse af et yder ligere allpasled med meget bred løbetidskarakteristik til løbetidsmodforvrængeren. Med et sådant led er det ved passende dimensionering muligt at udjævne ringe 145590 2 hældninger af løbetidskarakteristikken blot ved variation af selvinduktionen eller kapaciteten.35 A simplification can be achieved by adding a further equal allpass link with very broad maturity characteristics to the maturity distortion. With such a link, it is possible, by appropriate sizing, to smooth low slopes of the maturity characteristic simply by variation of self-induction or capacity.
Til grund for opfindelsen ligger den opgave, til en løbetidsmodforvrænger af den indledningsvis omhand- 5 lede art at angive en løsning, med hvilken også større hældninger af løbetidskarakteristikken kan udlignes på enkel måde.The object of the invention lies in the task of providing a maturity mode distortor of the kind initially referred to, a solution by which even larger slopes of the maturity characteristic can be easily offset.
Denne opgave løses ifølge opfindelsen ved følgende trask: 10 a) parallelt med allpasleddenes indstillelige ka pacitet er der koblet en seriekobling af en kapacitetsdiode og et yderligere kapacitivt element, b) kapacitetsdioderne er hver især forbundet med den forskydelige kontakt på et for hvert allpasled se- 15 parat forhåndenværende potentiometer, over hvis ydertilslutninger forspændingen for kapacitetsdioderne er påtrykt, således at hvert allpasled kan indstilles separat med hensyn til sin midterfrekvens, c) den forskydelige kontakt på et yderligere po- 20 tentiometer er forbundet med den ene ydertilslutning på alle potentiometre, mens begge ydertilslutninger på det yderligere potentiometer er tilsluttet forspændingskilden, således at optrædende løbetidsforvrængninger, hvis frekvensafhængighed fremtræder som en hældning af 25 løbetidskarakteristikken som funktion af frekvensen, kan udlignes med det yderligere potentiometer.This task is solved according to the invention by the following trace: a) parallel to the adjustable capacity of the allpass leads, a series coupling of a capacitance diode and an additional capacitive element is coupled; b) the capacitance diodes are each connected to the slidable contact on one for each allpass joint. 15 pairs of available potentiometer over whose external connections the voltage diode of the capacitance diodes is applied so that each allpass can be set separately with respect to its center frequency; both outer connections on the additional potentiometer are connected to the bias source, so that occurring maturity distortions whose frequency dependence appears as a slope of the maturity characteristic as a function of frequency can be offset with the additional potentiometer.
Det yderligere kapacitive element kan være en kondensator eller en kapacitetsdiode.The additional capacitive element may be a capacitor or a capacitor diode.
30 Kapacitetsdiodernes forspænding varieres altså over et for alle modforvrængerled fælles potentiometer, således at kapaciteterne i alle modforvrængerled kan ændres samtidigt ved betjening af et enkelt potentiometer.Thus, the bias of the capacitance diodes is varied over a potentiometer common to all countermeasures, so that the capacities of all countermeasures can be changed simultaneously by the operation of a single potentiometer.
35 Det for alle allpasled fælles og over sit udtag med allpasleddene forbundne indstillelige potentiometer kan til indgrænsning af variationsområdet ved sine to ydertilslutninger være tilsluttet forspændingskilden i 145590 3 serie med en modstand.35 The adjustable potentiometer, which is common to all allpass joints and connected to the outlet with the allpass joints, can be connected to the bias source of the 145590 3 series for resistance to the variation area at its two external connections.
Opfindelsen er i det følgende forklaret nærmere-på grundlag af et på tegningen vist udførelseseksempel.The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing.
På tegningen er en treleds aktiv løbetidsmodfor-5 vrænger med indstillelig hældning af løbetidskar akter!-*· stikken som funktion af frekvensen vist i et princip- \ diagram. Mellem koblingsindgangen E og koblingsudgangen A er fire forstærkere VI, V2, V3 og V4, eksempelvis transistorbufferforstærkere, forbundet i serie.In the drawing, a three-wire active maturity mode distortion with adjustable slope of maturity features! - * · socket as a function of frequency is shown in a principle diagram. Between the coupling input E and the coupling output A, four amplifiers VI, V2, V3 and V4, for example transistor buffer amplifiers, are connected in series.
10 Mellem forstærkerne er der indkoblet allpasled af anden orden. Disse allpasled har hver for sig et shuntet T-led med en transformator Li, L2, L3 med midtpunktsudtag i seriegrenen, hvis indstillelige hovedselvinduktion ved hjælp af en denne shuntende indstillelig .10 Between the amplifiers are allpass leads of the second order. These allpass joints each have a shunted T-joint with a transformer Li, L2, L3 with mid-point outlets in the series branch, whose adjustable main window reduction by means of this shunt adjustable.
15 kapacitet C^, i CT3 er kompletteret til en parallelresonanskreds, ligesom de hver for sig har en modstand RQ i shuntgrenen. Parallelt med allpasleddenee . indstillelige kapacitet C^, CT2, CT3 er der forbun-r det en seriekobling af en kondensator Cgl, Cg2, Cg3 -20- og en kapacitetsdiode DV2' DV3" en , afkob lingsdrosselspole Drl, Dr2, Dr3, der er tilsluttet forbindelsespunktet mellem seriekapacitetén og kapaci- tetsdioden, når forspændingen frem til de pågældende kapacitetsdioder. Med et foran drosselspolerne Drl, 25 Dr2, Dr3 indkoblet potentiometer R^, Ry2, ^3' hvis udtag er forbundet med drosselspolerne, kan middel-forspændingen indstilles individuelt i hvert allpasled.15 C1, in CT3 is complemented by a parallel resonant circuit, as well as each having a resistance RQ in the shunt branch. Parallel to the allpass joints. adjustable capacitance C1, CT2, CT3 there is connected a series connection of a capacitor Cgl, Cg2, Cg3 -20 and a capacitance diode DV2 'DV3', a decoupling choke coil Drl, Dr2, Dr3 connected to the connection point between the series capacity and a capacitance diode when the bias reaches the respective capacitance diodes With a front potentiometer Dr1, 25 Dr2, Dr3 coupled to potentiometer R1, Ry2, 3 'whose output is connected to the throttle coils, the mean bias can be individually adjusted at each level.
En modstand R^, Rg2 , ' R^j der i serie med hvert af p3tentiometrene Ry jr Ry2r- ^3' ti1 30 indgrænsning af potentiometrenes variationsområde. Til højfrekvensmæssig blokering af forspændingstilførslen findes der kondensatorer cA1, CA2, CA3·A resistor R ^, Rg2, 'R ^ j which is in series with each of the pentometers Ry jr Ry2r- ^ 3' to limit the range of potentiometers. Capacitors cA1, CA2, CA3 are available for high frequency blocking of the bias supply.
De andre tilslutninger på potentiometrene Ry^,The other connections on the potentiometers Ry
Ry2, Ry3 et sammenkoblede og i fællesskab ført til ud-35 taget på et potentiometer R^. Ved variation af modstanden over potentiometret varieres forspændingen , og dermed kapaciteten af kapacitetsdioderne Dyjf Dv2'Ry2, Ry3 an interconnected and jointly led output of a potentiometer R ^. By varying the resistance across the potentiometer, the bias is varied, and thus the capacity of the capacitance diodes Dyjf Dv2 '
Dv3 samtidigt i alle tre allpasled. Med potentiometretDv3 at the same time in all three stages. With the potentiometer
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2748559A DE2748559C3 (en) | 1977-10-28 | 1977-10-28 | Time-of-flight equalizer for electrical communications equipment |
DE2748559 | 1977-10-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK480878A DK480878A (en) | 1979-04-29 |
DK145590B true DK145590B (en) | 1982-12-13 |
DK145590C DK145590C (en) | 1983-05-30 |
Family
ID=6022583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK480878A DK145590C (en) | 1977-10-28 | 1978-10-27 | LIFE REQUIREMENTS FOR APPLIANCES IN THE ELECTRICAL COMMUNICATION TECHNOLOGY |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5523692A (en) |
AU (1) | AU508033B1 (en) |
BE (1) | BE871614A (en) |
DE (1) | DE2748559C3 (en) |
DK (1) | DK145590C (en) |
FR (1) | FR2407609A1 (en) |
GB (1) | GB2007930B (en) |
IT (1) | IT1100139B (en) |
LU (1) | LU80412A1 (en) |
NL (1) | NL174897C (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3204899A1 (en) * | 1982-02-12 | 1983-08-25 | Siemens AG, 1000 Berlin und 8000 München | Runtime equalizer for devices of the electrical communication technology |
EP0180065B1 (en) * | 1984-10-08 | 1989-02-08 | Siemens Aktiengesellschaft | Adjustable delay time equalizer having a parabolic course of the group delay time |
EP0205182B1 (en) * | 1985-06-12 | 1990-05-02 | Siemens Aktiengesellschaft | Adjustable lossy delay equalizer having at least one fixed delay point |
US6788169B1 (en) * | 1999-12-29 | 2004-09-07 | Broadband Royalty Corporation | Amplifier composite triple beat (CTB) reduction by phase filtering |
US9660605B2 (en) * | 2014-06-12 | 2017-05-23 | Honeywell International Inc. | Variable delay line using variable capacitors in a maximally flat time delay filter |
US10018716B2 (en) | 2014-06-26 | 2018-07-10 | Honeywell International Inc. | Systems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation |
-
1977
- 1977-10-28 DE DE2748559A patent/DE2748559C3/en not_active Expired
-
1978
- 1978-10-13 AU AU40693/78A patent/AU508033B1/en not_active Expired
- 1978-10-20 FR FR7829957A patent/FR2407609A1/en active Pending
- 1978-10-25 IT IT29081/78A patent/IT1100139B/en active
- 1978-10-25 LU LU80412A patent/LU80412A1/en unknown
- 1978-10-26 NL NLAANVRAGE7810710,A patent/NL174897C/en not_active IP Right Cessation
- 1978-10-26 JP JP13108678A patent/JPS5523692A/en active Granted
- 1978-10-27 GB GB7842340A patent/GB2007930B/en not_active Expired
- 1978-10-27 BE BE191413A patent/BE871614A/en not_active IP Right Cessation
- 1978-10-27 DK DK480878A patent/DK145590C/en active
Also Published As
Publication number | Publication date |
---|---|
GB2007930B (en) | 1982-02-17 |
NL7810710A (en) | 1979-05-02 |
BE871614A (en) | 1979-04-27 |
DK145590C (en) | 1983-05-30 |
GB2007930A (en) | 1979-05-23 |
IT1100139B (en) | 1985-09-28 |
LU80412A1 (en) | 1979-03-19 |
NL174897C (en) | 1984-08-16 |
JPS5756967B2 (en) | 1982-12-02 |
DK480878A (en) | 1979-04-29 |
NL174897B (en) | 1984-03-16 |
DE2748559C3 (en) | 1980-05-14 |
AU508033B1 (en) | 1980-03-06 |
DE2748559B2 (en) | 1979-08-30 |
FR2407609A1 (en) | 1979-05-25 |
IT7829081A0 (en) | 1978-10-25 |
DE2748559A1 (en) | 1979-05-03 |
JPS5523692A (en) | 1980-02-20 |
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