EP2608430B1 - Device for processing high frequency signals - Google Patents
Device for processing high frequency signals Download PDFInfo
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- EP2608430B1 EP2608430B1 EP12008357.1A EP12008357A EP2608430B1 EP 2608430 B1 EP2608430 B1 EP 2608430B1 EP 12008357 A EP12008357 A EP 12008357A EP 2608430 B1 EP2608430 B1 EP 2608430B1
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- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
- H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
Definitions
- the present invention relates to a device for processing high-frequency signals according to the preamble of claim 1.
- the SMATV / MATV networks essentially have a signal recording system, as well as a head unit and a distribution network.
- the signal recording system consists of various antennas that receive telecommunication signals and which are generally located outside a building in its highest area and are generally difficult to access.
- the antennas of the signal recording system usually have devices which are connected to or integrated in the outputs of the antennas and which enable the received signals to be amplified, so that the quality level of these signals is improved.
- the signals are transferred to the head unit and / or distributed directly, in the case of individual installations, in better conditions.
- These devices are located outside the building in the immediate vicinity of the antenna so that they are difficult to access when changes are made to the devices or when they are replaced.
- LTE long-term evolution
- the signals of the terrestrial digital television of the UHF band take up channels 21 to 60 (470 to 790 MHz) and the LTE signals take up channels 61 to 69 (791 to 862 MHz). Therefore, the television transmission units in the 791 to 862 MHz band, channels 61 to 69 are switched off and this band is used for the LTE signals. This process is known as the digital dividend.
- channels 61 to 69 (791 to 862 MHz) are currently used for television services.
- a dual-response stopband filter which eliminates telecommunications and / or mobile phone signal interference. It is located between an input and an output and has two parallel circuits. A variable capacitance is arranged in a first circuit, while a low-pass filter is arranged in a second circuit. The variable capacitance is assigned a first diode connected in series, while the low-pass filter is assigned a second diode connected in parallel.
- the known system has a switching device (1) which is connected to a MATV device (7) which transmits signals bi-directionally between the switching device (1) and user-specific connection points (8) which are connected to user-specific devices (9)
- the switching device (1) has a filter function with regard to signals which are present in predefinable bands in order to suppress television signals which have an inadequate signal-to-noise ratio SNR.
- an antenna system which has an electrically small antenna for receiving UHF band-channel signals.
- the known antenna system has a command block which is connected to a demodulator of a receiver or to a processor of the receiver, the command block generating two control signals.
- a first control signal controls a variable capacitor of an impedance converter and a second control signal controls variable capacitors of a filter network which is connected upstream of the impedance converter.
- the known antenna system compensates for impedance changes that arise on the basis of the reception conditions at different locations on the basis of signals that the receiver has received.
- the invention has for its object to provide a device of the type mentioned, which automatically eliminates interfering radio frequency signals, including those that are introduced by Long Term Evolution (LTE) services.
- LTE Long Term Evolution
- the device according to the invention is only activated and the interfering high-frequency signals are eliminated, in particular those which are generated by the LTE services, if the occurrence of these interfering signals is detected, the television services being maintained.
- the device according to the invention eliminates the disruptive signals that exist at the time the device is installed, as well as disruptive signals that occur after the installation, without the user and / or the installer having to act.
- the device according to the invention is arranged in the actual antenna housing or connected to the antenna via an installation coaxial cable; the device detects or detects the occurrence of interfering signals of the LTE type and the power (level) with which they are received.
- the device changes the frequency frame of the signals to be received.
- This frequency frame corresponds to the frequency frame of the telecommunication signals that are to be received as desired. All other signals that are not in this frequency frame are rejected.
- the device extracts a pattern of the possible interfering signals at the input of the device and determines the occurrence of these signals and their power.
- the inventive solution has a special meaning in situations of transition to transmission devices for LTE signals, since the inventive one Solution avoids a delay in the installation of MATV / SMATV systems by the user or the installer.
- the comparator / decision maker does not block the switching of the second signal to the output, the second signal is switched through to the output of the circuit.
- This case takes into account the absence of interfering LTE signals and the possibility that television signals are present in the frequency range from 791 to 862 MHz (channels 61 to 69).
- the device enables the switching of the complete signal or the signal spectrum from 470 MHz to 862 MHz (channels 21 to 69) compared to the first case, which only enables the switching of the signal between 470 and 790 MHz (channels 21 to 60) .
- Another advantageous exemplary embodiment of the device according to the invention is characterized in that it has an amplifier.
- This amplifier can also be arranged outside the device.
- a device according to the invention for processing high-frequency signals, in particular for television radio and / or data antennas in SMATV / MATV networks, is described below by way of example, and not by way of limitation, with reference to the drawing.
- Figure 1 shows a block diagram of the device according to the invention
- the device according to the invention has an input filter 1 at the UHF input (470-862 MHz, channels 21 to 69), an attenuator / isolator 2, a further filter ("first filter") 3, consisting of a high-pass filter (791-862 MHz, channels 61 to 69), a power measuring device (a detector) 4, a comparison circuit / decision maker 5, a switch 6, which preferably consists of there are two switch components, each with a control input, a low-pass filter 7 (470-790 MHz. channels 21 to 60) arranged between the two switch components and a signal amplifier 8, which can be arranged inside or outside the device.
- first filter consisting of a high-pass filter (791-862 MHz, channels 61 to 69
- a power measuring device a detector
- a comparison circuit / decision maker 5 a switch 6, which preferably consists of there are two switch components, each with a control input, a low-pass filter 7 (470-790 MHz. channels 21 to 60) arranged between the two switch components
- the control inputs of the two preferably identical switch components of the switch 6 are connected to the output of the comparison circuit 5, so that the two switch components are controlled by the output signal Vc of the comparison circuit 5.
- the two circuit components are directly connected to one another (connecting cable at the top in Figure 1 ) and on the other hand, a filter, in particular a low-pass filter 7, is connected between them.
- the input signal I1 which originates from a signal recording device (telecommunications antenna or the like), is introduced into the device according to the invention via a plug at the input IN.
- the input signal I1 is switched by the UHF input filter 1 (470 a 862 MHz, channels 21 to 69), so that the filtered input signal I2 (television signals and possibly LTE signals) are obtained at its output. Subsequently, a pattern I3 (television signals I31 and possibly LTE signals I32) of the signal I2, which is at the output of the Input filter 1 is present, extracted. The extraction of this pattern I3 of the signal I2 is carried out without introducing any losses in the signal I2, thereby avoiding that the quality of the signal I2 which is introduced into the switches 6 is reduced.
- I3 is equal to I2 (I21 and I22), but in a damped form, where I31 corresponds to the damped signal I21 and I32 corresponds to the damped signal I22. For example, if I22 has a level of 60 db, I32 has a level of, for example, 30 or 40 db.
- a first filter 3 which is formed by a high-pass filter (791 to 862 MHz, channels 61 to 69), which has the task of the signal I32 to be selected, which is arranged in this bandwidth and which includes television signals, before the introduction of the LTE services, or LTE signals after the introduction of these services.
- the signal I32 is measured and / or detected by means of the measuring device (the power detector) 4.
- the level VDetec measured or detected by the measuring device (the power detector) 4 is compared with a predetermined reference level VRef.
- the predetermined reference level is the level of the maximum power of the possible LTE interference signals which may be present in the signal I2; this level is the level, an amplifier 8 can assume this level at its input without disturbing the corresponding digital television signals which are present in signal I2.
- the comparison is carried out in the comparator / decision maker 5, and the signal switches 6 are activated in accordance with the comparison voltage Vc that arises at the output of the comparator / decision maker 5.
- the possible LTE signals of the signal I2 would not interfere with the television signals of this signal I2 and consequently the switches 6 are controlled by the voltage Vc that Connect signal I2 (470 to 862 MHz, channels 21 to 69) directly to signal amplifier 8.
- this signal I2 becomes a low-pass filter 7 Redirect (470 to 790 MHz. Channels 21 to 60).
- This low-pass filter 7 eliminates the signals I22 which are in the frequency band of the UHF channels 61 to 69 (791 to 862 MHz), that is to say the LTE signals which are interfering and only the television signals I21 (470 to 790 MHz, channels 21 to 60) of the signal I2 are introduced into and amplified in the amplifier 8 and later they are fed to the output OUT of the device according to the invention.
- the device according to the invention operates in a situation in which there are no interfering LTE signals (level Vdetec of the interfering signal LTE is below the reference level) in such a way that the signal (470 to 862 MHz, channels 21 to 69) is fed directly to the amplifier 8 in order to amplify it there and later to supply it to the output OUT.
- the inventive method works Device in such a way that the signal I2 (470 to 862 MHz, channels 21 to 69) is switched through the low-pass filter 7 (470 to 790 MHz, channels 21 to 60).
- This low-pass filter 7 eliminates the signals in the frequency band of UHF channels 61 to 69 (791 to 862 MHz), that is to say the interfering LTE signals and only the television signals (470 to 790 MHz, channels 21 to 60) of signal I2 are introduced into the amplifier 8 and amplified there and later fed to the output OUT of the device according to the invention.
- the first case also concerns the status in which LTE signals are not yet used; the second case concerns the status in which I21 consists of TV signals and I22 consists of LTE signals.
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur Verarbeitung von Hochfrequenzsignalen nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a device for processing high-frequency signals according to the preamble of claim 1.
Die SMATV/MATV-Netze weisen im Wesentlichen ein Signalaufnahmesystem auf, sowie eine Kopfeinheit und ein Verteilnetz.The SMATV / MATV networks essentially have a signal recording system, as well as a head unit and a distribution network.
Das Signalaufnahmesystem besteht aus diversen Antennen, die Telekommunikationssignale empfangen und die im Allgemeinen außerhalb eines Gebäudes in dessen höchstem Bereich angeordnet sind und im Allgemeinen schwer zugänglich sind.The signal recording system consists of various antennas that receive telecommunication signals and which are generally located outside a building in its highest area and are generally difficult to access.
Die Antennen des Signalaufnahmesystems weisen üblicherweise Vorrichtungen auf, die mit den Ausgängen der Antennen verbunden oder in diesen integriert sind und die die Verstärkung der empfangenen Signale ermöglichen, so dass der Qualitätsgrad dieser Signale verbessert wird. So werden die Signale der Kopfeinheit übergeben und/oder direkt verteilt, im Fall individueller Installationen, dies in besseren Bedingungen.The antennas of the signal recording system usually have devices which are connected to or integrated in the outputs of the antennas and which enable the received signals to be amplified, so that the quality level of these signals is improved. The signals are transferred to the head unit and / or distributed directly, in the case of individual installations, in better conditions.
Auch sind verschiedene Typen von Vorrichtungen bekannt, die direkt mit der Antenne verbunden sind und die dazu dienen, den Pegel des von der Antenne empfangenen Signals zu verstärken und Verluste zu kompensieren, die in Koaxialkabeln entstanden sind.Various types of devices are also known which are connected directly to the antenna and which serve to amplify the level of the signal received by the antenna and to compensate for losses which have arisen in coaxial cables.
Diese Vorrichtungen sind außerhalb des Gebäudes in der unmittelbaren Nähe der Antenne angeordnet, so dass sie schwer zugänglich sind, wenn Änderungen an den Vorrichtungen vorgenommen werden oder wenn sie ersetzt werden.These devices are located outside the building in the immediate vicinity of the antenna so that they are difficult to access when changes are made to the devices or when they are replaced.
Diese Vorrichtungen weisen einige feste Eigenschaften auf, die nicht modifiziert werden können (Gewinn, Bandbreite, Ausgangspegel, usw.), obwohl in vielen Fällen die Eigenschaften der zu empfangenen Signale variieren, sei es durch die Einführung neuer Dienste, sei es durch eine Änderung von Signalparametern, einschließlich des Auftretens neuer bzw. neuartiger störender Signale.These devices have some fixed properties that cannot be modified (gain, bandwidth, output level, etc.), although in many cases the properties of the signals to be received vary, either through the introduction of new services or through a change in Signal parameters, including the appearance of new or new interfering signals.
Dies ist zum Beispiel der Fall bei den Signalen, die den neuen Diensten entsprechen, die mit Long Term Evolution (im Folgenden LTE) bezeichnet werden.This is the case, for example, with the signals which correspond to the new services which are referred to as long-term evolution (hereinafter LTE).
Aufgrund der Aufteilung des UHF-Frequenzbandes für Fernsehen und Daten des so genannten Internets der 4. Generation nehmen die Signale des terrestrischen Digitalfernsehens des UHF-Bandes die Kanäle 21 bis 60 (470 bis 790 MHz) ein und die LTE-Signale nehmen die Kanäle 61 bis 69 (791 bis 862 MHz) ein. Daher werden die Fernsehübertragungseinheiten im Band von 791 bis 862 MHz, Kanäle 61 bis 69 abgeschaltet und dieses Band wird für die LTE-Signale benutzt. Dieser Vorgang ist unter dem Begriff Digital Dividende (englisch: digital dividend) bekannt.Due to the division of the UHF frequency band for television and data of the so-called 4th generation Internet, the signals of the terrestrial digital television of the UHF band take up channels 21 to 60 (470 to 790 MHz) and the LTE signals take up channels 61 to 69 (791 to 862 MHz). Therefore, the television transmission units in the 791 to 862 MHz band, channels 61 to 69 are switched off and this band is used for the LTE signals. This process is known as the digital dividend.
So wird die künftige Benutzung des Frequenzbandes von 791 bis 862 MHz (Kanäle 61 bis 69 des Fernsehbandes) für Dienste des mobilen Internets und Systeme des drahtlosen Breitbandzugangs zweifelsohne das Auftreten einer Mehrzahl von Störungen in den Fernsehkanälen bewirken, die diesem Frequenzband benachbart sind und wahrscheinlich auch bei weiteren Kanälen, die nicht benachbart sind, in Abhängigkeit des Pegels des gewünschten Signals und des störenden Signals sowie der verwendeten Verstärkungssysteme. So ist es vorab nicht voraussagbar, an welchen Orten und in welchen MATV /SMATV-Installationen bzw. in welchen ihrer Komponenten Störungen als Folge der Einführung neuer LTE-Dienste auftreten werden.Thus the future use of the 791 to 862 MHz frequency band (channels 61 to 69 of the television band) for mobile internet services and wireless broadband access systems will undoubtedly cause the occurrence of a number of disturbances in the television channels which are adjacent to this frequency band and probably also for other channels that are not adjacent, depending on the level of the desired signal and the interfering signal as well as the amplification systems used. It is therefore not possible to predict in advance at which locations and in which MATV / SMATV installations or in which of their components faults will occur as a result of the introduction of new LTE services.
Andererseits ist zu berücksichtigen, dass zur Zeit die Kanäle 61 bis 69 (791 bis 862 MHz) für Fernsehdienste benutzt werden.On the other hand, it should be noted that channels 61 to 69 (791 to 862 MHz) are currently used for television services.
Dies führt zu der Problematik, dass es nicht möglich ist, vorab Vorrichtungen zu installieren, um die störenden Signale zu eliminieren, die dem neuen LTE-Dienst (Band 791-862 MHz, Kanäle 61 bis 69) in den bestehenden Installationen oder in den neuen MATV/SMATV-Diensten entsprechen an denjenigen Orten, die für Signale des LTE-Dienstes in Frage kommen (Abdeckung des LTE-Dienstes), da zur Zeit dieses Band (791-862 MHz, Kanäle 61 bis 69) noch für die Fernsehdienste benutzt wird.This leads to the problem that it is not possible to install devices in advance in order to eliminate the interfering signals that the new LTE service (band 791-862 MHz, channels 61 to 69) have in the existing installations or in the new ones MATV / SMATV services correspond to those places that are suitable for signals of the LTE service (coverage of the LTE service), since this band (791-862 MHz, channels 61 to 69) is currently still used for television services .
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Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die störende Hochfrequenzsignale automatisch eliminiert, einschließlich solcher, die durch Long Term-Evolution (LTE) -Dienste eingeführt werden.The invention has for its object to provide a device of the type mentioned, which automatically eliminates interfering radio frequency signals, including those that are introduced by Long Term Evolution (LTE) services.
Die erfindungsgemäße Vorrichtung wird nur dann aktiviert und die störenden Hochfrequenzsignale werden eliminiert, insbesondere diejenigen, die durch die LTE-Dienste erzeugt werden, wenn das Auftreten dieser störenden Signale detektiert wird, wobei die Fernsehdienste aufrechterhalten werden.The device according to the invention is only activated and the interfering high-frequency signals are eliminated, in particular those which are generated by the LTE services, if the occurrence of these interfering signals is detected, the television services being maintained.
Diese Aufgabe wird durch eine Vorrichtung der eingangs genannten Art-gelöst, die in den Patentansprüchen definiert ist.This object is achieved by a device of the type mentioned at the outset, which is defined in the patent claims.
Die erfindungsgemäße Vorrichtung eliminiert die störenden Signale, die zum Zeitpunkt der Installation der Vorrichtung existieren, sowie störende Signale, die nach der Installation auftreten, ohne dass der Benutzer und/oder der Installateur tätig werden müsste.The device according to the invention eliminates the disruptive signals that exist at the time the device is installed, as well as disruptive signals that occur after the installation, without the user and / or the installer having to act.
Die erfindungsgemäße Vorrichtung ist in dem eigentlichen Antennengehäuse anordnet, oder mit der Antenne über ein Installationskoaxialkabel verbunden; die Vorrichtung detektiert bzw. stellt das Auftreten von störenden Signalen des Typs LTE fest sowie die Leistung (Pegel), mit der sie empfangen werden.The device according to the invention is arranged in the actual antenna housing or connected to the antenna via an installation coaxial cable; the device detects or detects the occurrence of interfering signals of the LTE type and the power (level) with which they are received.
Sobald das Auftreten und die Leistung dieser störenden Signale festgestellt ist, ändert die erfindungsgemäße Vorrichtung den Frequenzrahmen der zu empfangenen Signale. Dieser Frequenzrahmen entspricht dem Frequenzrahmen der Telekommunikationssignale, die wunschgemäß empfangen werden sollen. Alle übrigen Signale, die sich nicht in diesem Frequenzrahmen befinden, werden zurückgewiesen.As soon as the occurrence and the performance of these interfering signals is determined, the device according to the invention changes the frequency frame of the signals to be received. This frequency frame corresponds to the frequency frame of the telecommunication signals that are to be received as desired. All other signals that are not in this frequency frame are rejected.
Um dies zu bewerkstelligen, extrahiert die erfindungsgemäße Vorrichtung ein Muster der möglichen störenden Signale am Eingang der Vorrichtung und ermittelt das Auftreten dieser Signale und deren Leistung.To accomplish this, the device according to the invention extracts a pattern of the possible interfering signals at the input of the device and determines the occurrence of these signals and their power.
Die erfinderische Lösung hat eine besondere Bedeutung in Situationen des Übergangs auf Übertragungseinrichtungen für LTE-Signale, da die erfinderische Lösung eine Verzögerung der Installation von MATV / SMATV-Systemen durch den Benutzer bzw. den Installateur vermeidet.The inventive solution has a special meaning in situations of transition to transmission devices for LTE signals, since the inventive one Solution avoids a delay in the installation of MATV / SMATV systems by the user or the installer.
Außerdem eliminiert die Installation dieser Vorrichtung vor Einführung der LTE-Dienste nicht den Dienst des terrestrischen Fernsehens, während dieser das Band von 791 bis 862 MHz, Kanäle 61 bis 69, belegt.In addition, installing this device prior to the introduction of LTE services does not eliminate the terrestrial television service while it occupies the 791 to 862 MHz band, channels 61 to 69.
Mit der Erfindung wird eine Vielzahl von Vorteilen erzielt.A multitude of advantages are achieved with the invention.
Eine vorteilhafte Ausführungsform der erfindungsgemäßen Vorrichtung ist in Anspruch 1 definiert.An advantageous embodiment of the device according to the invention is defined in claim 1.
Damit wird der Vorteil erzielt, dass das zweite Signal, das im zweiten Frequenzbereich (791 bis 862 MHz, Kanäle 61 bis 69) angeordnet ist, wenn sein Pegel oberhalb eines Bezugspegels liegt, am Ausgang der Vorrichtung eliminiert ist.This has the advantage that the second signal, which is arranged in the second frequency range (791 to 862 MHz, channels 61 to 69) when its level is above a reference level, is eliminated at the output of the device.
Damit werden Störungen der Signale zwischen 791 bis 862 MHz (LTE-Signale) auf die Signale von 470 bis 790 MHz, die für Fernseh-Dienste bestimmt sind, vermieden.This prevents interference between the signals between 791 and 862 MHz (LTE signals) and the signals between 470 and 790 MHz that are intended for television services.
In dem Fall, dass der Pegel des zweiten Signals, das in dem zweiten Frequenzbereich (791 bis 862 MHz, Kanäle 61 bis 69) liegt, nicht oberhalb des Bezugpegels liegt, blockiert der Komparator/Entscheider nicht die Durchschaltung des zweiten Signals zu dem Ausgang, das zweite Signal wird zum Ausgang der Schaltung durchgeschaltet. Dieser Fall berücksichtigt das Nichtvorhandensein störender LTE-Signale und die Möglichkeit, dass sich im Frequenzbereich von 791 bis 862 MHz (Kanäle 61 bis 69) Fernsehsignale vorliegen. Im letztgenannten Fall ermöglicht die Vorrichtung die Durchschaltung des kompletten Signals bzw. des Signalspektrums von 470 MHz bis 862 MHz (Kanäle 21 bis 69) gegenüber dem ersten Fall, der nur die Durchschaltung des Signals zwischen 470 und 790 MHz (Kanäle 21 bis 60) ermöglicht.In the event that the level of the second signal, which is in the second frequency range (791 to 862 MHz, channels 61 to 69), is not above the reference level, the comparator / decision maker does not block the switching of the second signal to the output, the second signal is switched through to the output of the circuit. This case takes into account the absence of interfering LTE signals and the possibility that television signals are present in the frequency range from 791 to 862 MHz (channels 61 to 69). In the latter case, the device enables the switching of the complete signal or the signal spectrum from 470 MHz to 862 MHz (channels 21 to 69) compared to the first case, which only enables the switching of the signal between 470 and 790 MHz (channels 21 to 60) .
Ein weiteres vorteilhaftes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung ist dadurch gekennzeichnet, dass diese einen Verstärker aufweist.Another advantageous exemplary embodiment of the device according to the invention is characterized in that it has an amplifier.
Damit wird der Vorteil erzielt, dass am Ausgang der Vorrichtung Signale vorliegen, die in das Verteilernetz eingespeist werden können. Dieser Verstärker kann auch außerhalb der Vorrichtung angeordnet sein.This has the advantage that signals are present at the output of the device that can be fed into the distribution network. This amplifier can also be arranged outside the device.
Damit wird der Vorteil erzielt, dass eine Standardbenutzung der Vorrichtung für verschiedene Typen von Verstärkern geschaffen wird.This has the advantage that a standard use of the device is created for different types of amplifiers.
Im Folgenden wird beispielhaft, nicht einschränkend, eine erfindungsgemäße Vorrichtung zur Verarbeitung von Hochfrequenzsignalen, insbesondere für Fernseh-Radio- und/oder Datenantennen in SMATV/MATV-Netzen anhand der Zeichnung beschrieben.A device according to the invention for processing high-frequency signals, in particular for television radio and / or data antennas in SMATV / MATV networks, is described below by way of example, and not by way of limitation, with reference to the drawing.
Wie in
Die Steuereingänge der beiden vorzugsweise identischen Schalterkomponenten des Schalters 6 sind mit dem Ausgang der Vergleichsschaltung 5 verbunden, so dass die beiden Schalterkomponenten von dem Ausgangssignal Vc der Vergleichsschaltung 5 gesteuert werden.
Die beiden Schaltungskomponenten sind zum einen direkt miteinander verbunden (Verbindungsleitung oben in
The control inputs of the two preferably identical switch components of the
On the one hand, the two circuit components are directly connected to one another (connecting cable at the top in
Wie in
Das Eingangssignal I1 wird durch das UHF-Eingangsfilter 1 (470 a 862 MHz, Kanäle 21 bis 69) geschaltet, so dass an seinem Ausgang das gefilterte Eingangssignal I2 (Fernsehsignale und gegebenenfalls LTE-Signale) erhalten werden. Im Anschluss daran wird mittels des Dämpfungsgliedes/ Isolator 2 ein Muster I3 (Fernsehsignale I31 und gegebenenfalls LTE-Signale I32) des Signals I2, das am Ausgang des Eingangsfilters 1 anliegt, extrahiert. Die Extraktion dieses Musters I3 des Signals I2 wird durchgeführt, ohne Verluste im Signal I2 einzuführen, womit vermieden wird , dass die Qualität des Signals I2 reduziert wird, das in die Schalter 6 eingeführt wird. Grundsätzlich ist I3 (I31 und I32) gleich I2 (I21 und I22), allerdings in gedämpfter Form, wobei I31 dem gedämpften Signal I21 entspricht und wobei I32 dem gedämpften Signal I22 entspricht.
Hat I22 z.B. einen Pegel von 60 db, so hat I32 einen Pegel von z.B. 30 oder 40 db.The input signal I1 is switched by the UHF input filter 1 (470 a 862 MHz, channels 21 to 69), so that the filtered input signal I2 (television signals and possibly LTE signals) are obtained at its output. Subsequently, a pattern I3 (television signals I31 and possibly LTE signals I32) of the signal I2, which is at the output of the Input filter 1 is present, extracted. The extraction of this pattern I3 of the signal I2 is carried out without introducing any losses in the signal I2, thereby avoiding that the quality of the signal I2 which is introduced into the
For example, if I22 has a level of 60 db, I32 has a level of, for example, 30 or 40 db.
Das Signal I3 (= I31 und I32) am Ausgang des Dämpfungsgliedes/Isolators 2 wird an ein erstes Filter 3 geführt, das durch einen Hochpaß (791 bis 862 MHz, Kanäle 61 bis 69) gebildet ist, der die Aufgabe hat, das Signal I32 auszuwählen, das in dieser Bandbreite angeordnet ist und das Fernsehsignale umfaßt, dies vor der Einführung der LTE-Dienste, oder LTE-Signale nach der Einführung dieser Dienste.The signal I3 (= I31 and I32) at the output of the attenuator /
Am Ausgang dieses Filters 3 wird das Signal I32 gemessen und/oder detektiert mittels der Meßeinrichtung (des Leistungsdetektors) 4. Der von der Meßeinrichtung (dem Leistungsdetektor) 4 gemessene oder detektierte Pegel VDetec wird mit einem vorbestimmten Bezugspegel VRef verglichen. Der vorbestimmte Bezugspegel ist der Pegel der maximalen Leistung der möglichen LTE-Störsignale, die gegebenenfalls im Signal I2 vorhanden sind; dieser Pegel ist der Pegel, diesen Pegel kann ein Verstärker 8 an seinem Eingang annehmen, ohne dass die entsprechenden Signale des digitalen Fernsehens gestört werden, die im Signal I2 vorhanden sind.At the output of this
Der Vergleich wird in dem Vergleicher/Entscheider 5 durchgeführt, und entsprechend der Vergleichsspannung Vc, die sich am Ausgang des Vergieichers/Entscheiders 5 ergibt, werden die Signalschalter 6 aktiviert.The comparison is carried out in the comparator /
Wenn der Bezugspegel VRef größer ist als der detektierte Pegel VDetec würden die möglichen LTE-Signale des Signals I2 die Fernsehsignale dieses Signals I2 nicht stören und folglich werden die Schalter 6, gesteuert durch die Spannung Vc, das Signal I2 (470 bis 862 MHz, Kanäle 21 bis 69) direkt zum Signalverstärker 8 durchschalten.If the reference level VRef is greater than the detected level VDetec, the possible LTE signals of the signal I2 would not interfere with the television signals of this signal I2 and consequently the
In dem Fall, dass der Bezugspegel VRef kleiner ist als der detektierte Pegel VDetec, würden die Signale LTE des Signals I2 die Fernsehsignale dieses Signals I2 stören, und folglich werden die Schalter 6, gesteuert durch die Spannung Vc, dieses Signal I2 zu einem Tiefpaßfilter 7 (470 bis 790 MHz. Kanäle 21 bis 60) umleiten. Dieses Tiefpaßfilter 7 eliminiert die Signale I22, die sich in dem Frequenzband der UHF-Kanäle 61 bis 69 (791 bis 862 MHz) befinden, das heißt die LTE-Signale, die stören und nur die Fernsehsignale I21 (470 bis 790 MHz, Kanäle 21 bis 60) des Signals I2 werden in den Verstärker 8 eingeführt und in diesem verstärkt und später werden sie dem Ausgang OUT der erfindungsgemäßen Vorrichtung zugeführt.In the event that the reference level VRef is less than the detected level VDetec, the signals LTE of the signal I2 would interfere with the television signals of this signal I2 and consequently the
Auf diese Art und Weise arbeitet die erfindungsgemäße Vorrichtung in einer Situation, in der keine störenden LTE-Signale vorliegen (Pegel Vdetec des störenden Signals LTE liegt unter dem Bezugspegel), in der Weise, dass das Signal (470 bis 862 MHz, Kanäle 21 bis 69) direkt dem Verstärker 8 zugeführt wird, um es dort zu verstärken und später dem Ausgang OUT zuzuführen.In this way, the device according to the invention operates in a situation in which there are no interfering LTE signals (level Vdetec of the interfering signal LTE is below the reference level) in such a way that the signal (470 to 862 MHz, channels 21 to 69) is fed directly to the
In dem gegenteiligen Fall, bei dem die störenden LTE-Signal mit einem Pegel vorliegen, der über einer Leistung liegt, die in der Lage ist, die Fernsehsignale zu stören (Pegel Vdetec des störenden LTE-Signals liegt oberhalb eines Referenzpegels Vref) arbeitet die erfindungsgemäße Vorrichtung in der Weise, dass das Signal I2 (470 bis 862 MHz, Kanäle 21 bis 69) über den Tiefpaß 7 (470 bis 790 MHz, Kanäle 21 bis 60) durchgeschaltet wird. Dieser Tiefpaß 7 eliminiert die Signale, die im Frequenzband der UHF-Kanäle 61 bis 69 (791 bis a 862 MHz), das heißt die störenden LTE-Signale und nur die Fernsehsignale (470 bis 790 MHz, Kanäle 21 bis 60) des Signals I2 werden in den Verstärker 8 eingeführt und dort verstärkt und später dem Ausgang OUT der erfindungsgemäßen Vorrichtung zugeführt.In the opposite case, in which the interfering LTE signal is present at a level which is above a power which is capable of interfering with the television signals (level Vdetec of the interfering LTE signal is above a reference level Vref), the inventive method works Device in such a way that the signal I2 (470 to 862 MHz, channels 21 to 69) is switched through the low-pass filter 7 (470 to 790 MHz, channels 21 to 60). This low-
Die vorstehend beschriebene Vorrichtung ist in der Weise ausgestaltet, dass in Abhängigkeit der von der Vergleichsschaltung 5 gebildeten Ausgangsspannung Vc entweder das Signal I2 (= I21 und I22) an den Ausgang OUT der Vorrichtung geleitet wird (1. Fall: VDetec is kleiner als (gleich wie) VRef) oder das Signal I21 an den Ausgang OUT der Vorrichtung geleitet wird (2. Fall: VDetec ist größer als VRef).The device described above is designed in such a way that, depending on the output voltage Vc formed by the
Im vorgenannten 1. Fall wird I2 (= I21 und I22) direkt dem Verstärker 8 bzw. dem Ausgang OUT der Vorrichtung zugeführt und im vorgenannten 2. Fall wird I2 (= I21 und I22) über den Tiefpaßfilter 7 geführt, wobei dieses Filter 7 das Signal I22 eliminiert, so dass nur das Signal I21 zum Verstärker 8 bzw. zum Ausgang OUT der Vorrichtung gelangt. Im 1. Fall wird der Weg von I22 zum Verstärker 8 bzw. zum Ausgang OUT der Vorrichtung freigegeben und im 2. Fall wird der Weg von I22 zum Verstärker 8 bzw. zum Ausgang OUT der Vorrichtung blockiert.In the aforementioned 1st case I2 (= I21 and I22) is fed directly to the
Der 1. Fall betrifft auch den Status, in dem noch keine LTE-Signale verwendet werden; der 2. Fall betrifft den Status, in dem I21 aus TV-Signalen besteht und I22 aus LTE-Signalen.The first case also concerns the status in which LTE signals are not yet used; the second case concerns the status in which I21 consists of TV signals and I22 consists of LTE signals.
- 11
- Filter am UHF-EingangFilters at the UHF input
- 22nd
- Dämpfungsglied/IsolatorAttenuator / isolator
- 33rd
- Erstes FilterFirst filter
- 44th
- Leistungsmeßvorrichtung /DetektorPower meter / detector
- 55
- Vergleichsschaltung/EntscheiderComparison circuit / decision maker
- 66
- Schaltercounter
- 77
- Filter; Tiefpass-, Hochpass- oder BandpassfilterFilter; Low pass, high pass or band pass filters
- 88th
- Verstärkeramplifier
- ININ
- Eingang; Eingangsstecker/VerbindungselementEntrance; Input connector / connector
- OUTOUT
- Ausgang; Ausgangsstecker/VerbindungselementExit; Output connector / connector
- I1I1
- Hochfrequenzsignal am Eingang der VorrichtungRadio frequency signal at the input of the device
- I2I2
- Gefiltertes Eingangssignal: Hochfrequenzsignal (470-862 MHz, Kanäle 21 bis 69), bestehend aus I21 und I22Filtered input signal: high-frequency signal (470-862 MHz, channels 21 to 69), consisting of I21 and I22
- I21I21
- Hochfrequenzsignal einer Frequenz von 470 bis 790 MHz (FR1), Kanäle 21 bis 60, ausschließlich FernsehsignaleHigh-frequency signal with a frequency of 470 to 790 MHz (FR1), channels 21 to 60, only television signals
- I22I22
-
Hochfrequenzsignal einer Frequenz von 791 bis 862 MHz (FR2), Kanäle 61 bis 69,
- vor Einführung der Digitalen Dividende:
ausschließlich Signale des terrestrischen Digitalfernsehens - nach Einführung der digitalen Dividende:
ausschließlich LTE-Signale
- before the introduction of the digital dividend:
only signals from terrestrial digital television - after the introduction of the digital dividend:
only LTE signals
- vor Einführung der Digitalen Dividende:
- I3I3
- Muster des Signals I2Pattern of signal I2
- I31I31
- I21 in gedämpfter FormI21 in subdued form
- I32I32
- I22 in gedämpfter FormI22 in a subdued form
- FR1FR1
- Erster FrequenzbereichFirst frequency range
- FR2FR2
- Zweiter FrequenzbereichSecond frequency range
Claims (5)
- Device for processing high-frequency signals,- wherein the device has a UHF input (IN) and an output (OUT) and at least a first filter (3),- wherein the device is configured in such a way that an input signal (I1) passes through a UHF filter (1) connected downstream of the UHF input (IN), which filter generates a filtered input signal (I2) and is configured in such a way as to filter signals in a frequency range consisting of a first frequency range and a second frequency range,- wherein the device is configured in such a way that the filtered input signal (I2) is conducted to a switch (6),- wherein the UHF filter (1) and the switch (6) are connected downstream of the UHF input (IN) and wherein the switch (6) is connected on the input side to a comparator circuit (5) and wherein the first filter (3) is connected downstream of the UHF filter (1) and is configured in such a way as to filter signals in the second frequency range (FR2) in accordance with Long Term Evolution, LTE services, after introduction of the digital dividend and in accordance exclusively with terrestrial television services before introduction of the digital dividend,- wherein said filtered input signal (I2) comprises a first signal (I21) arranged in said first frequency range (FR1) corresponding exclusively to terrestrial television services, and a second signal (I22) arranged in said second frequency range (FR2),characterised in that- said comparator circuit (5) is arranged downstream of said first filter (3),- the comparator circuit (5) is configured in such a way that the comparator circuit (5) performs a level comparison between the level of the second signal (I22) contained in the filtered input signal (I2) and a reference level (VRef), which is a predefined level corresponding to a level of maximum power of possible interference signals in the second frequency range (FR2),- an amplifier (8) can accept the reference level at its input without disturbing corresponding digital television signals present in the input signal (I2),- the comparator circuit (5) is configured in such a way that, depending on the level comparison, it enables or blocks the path of the second signal (I22) to the output (OUT) of the device and forms an output signal (Vc) for controlling the switch (6), which is configured in such a way that- in a first alternative, if the reference level (VRef) is greater than the level of the second signal (I22), the output of the UHF filter (1) is connected directly to the output (OUT) of the device and enables the path of the second signal (I22) to the output (OUT) of the device, and- in a second alternative, if the reference level (VRef) is lower than the level of the second signal (I22), the output of the UHF filter (1) is connected to a low-pass filter (7), which is arranged between the UHF filter (1) and the output (OUT) of the device and which is configured to filter signals in the first frequency range.
- Device according to claim 1, characterised in that- the switch (6) consists of two switch components each having a control input, which is connected to the output of the comparator circuit (5).
- Device according to claim 2, characterised in that- the switch components are identical.
- Device according to any of the preceding claims, characterised in that- the amplifier (8) is arranged between the switch (6) and the output (OUT) of the device.
- System comprising a device according to one of claims 1 to 3, characterised in that- the system has the amplifier (8) outside the device.
Priority Applications (1)
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PL12008357T PL2608430T3 (en) | 2011-12-19 | 2012-12-15 | Device for processing high frequency signals |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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ES201101218 | 2011-12-19 | ||
ES201101348A ES2409094B2 (en) | 2011-12-19 | 2011-12-19 | RADIO FREQUENCY SIGNAL DISCRIMINATOR DEVICE. |
Publications (2)
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EP2608430A1 EP2608430A1 (en) | 2013-06-26 |
EP2608430B1 true EP2608430B1 (en) | 2020-05-27 |
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EP12008357.1A Active EP2608430B1 (en) | 2011-12-19 | 2012-12-15 | Device for processing high frequency signals |
Country Status (4)
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EP (1) | EP2608430B1 (en) |
ES (1) | ES2804557T3 (en) |
PL (1) | PL2608430T3 (en) |
PT (1) | PT2608430T (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000003542A1 (en) * | 1998-07-13 | 2000-01-20 | Uni.Com S.P.A. | Optimized system for distributing television and telecommunication services from a peripheral node to user terminals |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2251927A1 (en) * | 2009-05-14 | 2010-11-17 | Thomson Licensing | Dual-response stopband filter |
FR2949612A1 (en) * | 2009-08-28 | 2011-03-04 | Thomson Licensing | ANTENNA SYSTEM COMPRISING AN ELECTRICALLY SMALL ANTENNA FOR RECEIVING CHANNEL SIGNALS FROM THE UHF BAND |
-
2012
- 2012-12-15 EP EP12008357.1A patent/EP2608430B1/en active Active
- 2012-12-15 PL PL12008357T patent/PL2608430T3/en unknown
- 2012-12-15 PT PT120083571T patent/PT2608430T/en unknown
- 2012-12-15 ES ES12008357T patent/ES2804557T3/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000003542A1 (en) * | 1998-07-13 | 2000-01-20 | Uni.Com S.P.A. | Optimized system for distributing television and telecommunication services from a peripheral node to user terminals |
Also Published As
Publication number | Publication date |
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PL2608430T3 (en) | 2020-11-02 |
ES2804557T3 (en) | 2021-02-08 |
PT2608430T (en) | 2020-07-31 |
EP2608430A1 (en) | 2013-06-26 |
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