DE102013111798A1 - duplexer - Google Patents

duplexer

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Publication number
DE102013111798A1
DE102013111798A1 DE201310111798 DE102013111798A DE102013111798A1 DE 102013111798 A1 DE102013111798 A1 DE 102013111798A1 DE 201310111798 DE201310111798 DE 201310111798 DE 102013111798 A DE102013111798 A DE 102013111798A DE 102013111798 A1 DE102013111798 A1 DE 102013111798A1
Authority
DE
Germany
Prior art keywords
duplexer
antenna
directional line
signals
according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE201310111798
Other languages
German (de)
Inventor
Edgar Schmidhammer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SnapTrack Inc
Original Assignee
TDK Electronics AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TDK Electronics AG filed Critical TDK Electronics AG
Priority to DE201310111798 priority Critical patent/DE102013111798A1/en
Publication of DE102013111798A1 publication Critical patent/DE102013111798A1/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00Auxiliary devices
    • H01P1/20Frequency-selective devices, e.g. filters
    • H01P1/213Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • H04B1/50Circuits using different frequencies for the two directions of communication
    • H04B1/52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H7/463Duplexers
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/703Networks using bulk acoustic wave devices
    • H03H9/706Duplexers
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72Networks using surface acoustic waves
    • H03H9/725Duplexers

Abstract

The present invention relates to a duplexer (1) which has an antenna connection (2), a transmission connection (3) and a reception connection (4), a first bandpass filter (6) being arranged between the transmission connection (3) and the antenna connection (2) is, and wherein between the first bandpass filter (6) and the antenna terminal (2) a directional line (9) is arranged.

Description

  • The present invention relates to a duplexer. The duplexer can only use BAW (Bulk Acoustic Wave Filter) filters or a combination of BAW filters and SAW (Surface Acoustic Wave Filter) filters. Furthermore, duplexers are possible which have only SAW filters. Furthermore, duplexers realized in another technology are possible, for example strip conductors, waveguides or dielectric duplexers.
  • Duplexers can show pronounced nonlinear behavior. The term non-linearity refers to the occurrence or generation of interfering frequency components which are generated by filter structures that do not operate completely linearly. Non-linearities can arise in particular due to a superimposition of transmission signals and interference signals.
  • A variety of approaches to reducing nonlinearities in duplexer circuits are known in the art. Here, for example, the modification of the finger geometry of the filters used or the use of diversity duplexers is possible. Such a circuit arrangement is for example in DE 10 2011 018918 A1 disclosed. The known approaches, however, do not lead to the desired suppression of the interference signal in the case of interference signals whose frequency is very similar to the frequency of the transmission signal.
  • It is an object of the present invention to provide a duplexer having improved linearity.
  • This object is achieved by a duplexer according to claim 1.
  • A duplexer is proposed which has an antenna connection, a transmission connection and a reception connection, a first bandpass filter being arranged between the transmission connection and the antenna connection, and a directional line being arranged between the first bandpass filter and the antenna connection.
  • A directional line is also referred to as an insulator. The directional line can also be referred to as a "one-way line". The directional line is characterized by a preferred passage direction. It has a lower insertion loss for signals passing through it in the preferred forward direction than for signals passing through it in a direction opposite to the preferred forward direction.
  • Thus, the duplexer has the transmitting terminal, the first band-pass filter, the directional line and the antenna terminal, which are connected together in this order. The antenna connector is suitable for connecting the duplexer to an antenna.
  • The arrangement of the directional line between the transmitting terminal and the antenna terminal makes it possible to suppress interference signals which are received from the antenna terminal and directed to the transmitting terminal and thus avoid or at least greatly suppress the occurrence of non-linearities.
  • Another advantage of the arrangement of the directional line between the transmitting terminal and the antenna terminal is that in this way a very compact duplexer with a small footprint is constructed. The directional line can be combined with filters of the duplexer into a single component which can be arranged in a single housing.
  • Furthermore, the arrangement of the directional line in the immediate vicinity of the antenna connection ensures that interference signals which are coupled in via the antenna connection are suppressed at an early stage and thus the occurrence of nonlinearities is avoided.
  • In general, the duplexer is advantageous for applications in which two signals are generated and / or processed whose frequencies are identical or similar to each other. The duplexer is particularly advantageous for applications in which two signals are generated and / or processed whose frequencies lie within the pass band of a filter and / or whose mixed products lie in the pass band of a filter. Examples of this may be in addition to mobile in the portable mobile phone and small-cell applications or applications in the field of radar technology.
  • The receiving port of the duplexer can be single-ended or balanced.
  • Furthermore, the directional line can be arranged such that signals that pass through the directional line in the direction from the transmitting terminal to the antenna terminal are attenuated less than signals that pass through the directional line in the opposite direction.
  • The signals which pass through the directional line in the direction from the transmitting connection to the antenna connection are typically transmission signals, which are coupled from a transmitting-receiving circuit to the transmitting connection. Accordingly, the should Signal strength of these signals are minimized as possible. Accordingly, the directional line can be arranged so that the preferred forward direction of the directional line points from the transmitting terminal to the antenna terminal. This can ensure that the transmission signals experience only a slight attenuation by the directional line.
  • The signals passing through the directional line from the antenna port to the transmit port are typically jamming signals coupled to the antenna port. Accordingly, the signal strength of these signals should be reduced as much as possible in order to avoid or at least reduce the occurrence of nonlinearities. If the directional line is arranged as described above so that the preferred directionality of the directional line points from the transmitting terminal to the antenna terminal, the interfering signals which are opposite to the preferred passing direction experience a strong attenuation by the directional line.
  • Further, the directional line may have a maximum insertion loss of 1.0 dB acting on signals passing the directional line in the direction from the transmitting terminal to the antenna terminal. In particular, the directional line may have an insertion loss between 0.2 dB and 1.0 dB acting on signals passing the directional line in the direction from the transmitting port to the antenna port.
  • Further, the directional line may have an insertion loss of at least 5 dB, which acts on signals passing the directional line in the direction from the antenna terminal to the transmitting terminal. In particular, the directional line may have an insertion loss between 8 dB and 25 dB which acts on signals passing the directional line in the direction from the antenna port to the transmitting port.
  • The number ranges given here make it clear that the directional line can be configured in such a way that signals which pass the directional line in the direction from the transmitting connection to the antenna connection experience a significantly lower insertion loss than signals which pass the directional line in the direction from the antenna connection to the transmitting connection.
  • The value ranges for the insertion loss specified here refer in each case to signals whose frequencies lie within the frequency bands defined according to the mobile radio standards, in particular in the LTE frequency bands.
  • In one embodiment, the first bandpass filter may have a tunable passband. Accordingly, the passband of the first bandpass filter can be set to different frequencies. In this way, the duplexer can be used for transmitting and / or receiving data in different frequency ranges.
  • The directional line also has a passband, whereby it attenuates signals whose frequencies lie in this passband range less than signals whose frequencies are outside the passband. The passband of the directional line may be wider than the passband of the first bandpass filter. If the first bandpass filter has a tunable passband and if the passband of the directional conductor is not tunable, the tunable passband of the first bandpass filter may be limited such that the tunable passband of the first bandpass filter can only be tuned to frequencies that are in the passband of the directional patch.
  • Further, the directional line may have a tunable frequency characteristic that is tunable to different transmission frequencies. Thus, the passband of the directional line can be tuned. Accordingly, the duplexer can be used for a wider frequency range. Here, the bandwidth of the directional line is no longer limiting.
  • In particular, the combination of a first bandpass filter, which is tunable in its forward frequency, with a directional line whose transmission frequency is tunable, results in a duplexer which can be used over a very wide frequency range.
  • Furthermore, a second bandpass filter and a first phase shifter can be arranged between the reception terminal and the antenna terminal.
  • The second bandpass filter may also have a tunable passband. The second bandpass filter is connected to the receiving port. If the second bandpass filter has a tunable passband, then the duplexer can be tuned to receive signals from different frequency bands.
  • Furthermore, a second phase shifter can be arranged between the directional line and the antenna connection.
  • The first and the second phase shifter may have a frequency characteristic which tunable to different transmission frequencies. This feature also allows the duplexer to be better tuned for use in different frequency bands.
  • The present invention according to another aspect relates to a circuit arrangement comprising a first duplexer and a second duplexer, wherein each of the first and the second duplexer is a duplexer in which a first bandpass filter and a first bandpass filter are connected between a transmission port and an antenna port Direction line are arranged. Thus, each of the first and second duplexers may be one of the duplexers described above. In particular, the first and second duplexers may have any structural and functional feature disclosed herein in the context of the duplexer of claim 1 and the corresponding embodiments of this duplexer.
  • Further, in the circuit arrangement, a first antenna may be connected to the antenna port of the first duplexer and a second antenna may be connected to the antenna port of the second duplexer.
  • Accordingly, the circuit arrangement is particularly suitable for use in mobile radio standards, in which signals are simultaneously transmitted and / or received via two antennas. If frequencies from the same frequency band are used, the duplexers make it possible to significantly attenuate the usually occurring nonlinearities. The directional line in the respective duplexer makes it possible for the own transmit signal to pass through the duplexer almost undamped and a noise signal coming from the respective antenna connection is strongly attenuated.
  • The SV-LTE standard (Simultaneous Voice LTE) is a mobile radio standard in which signals are simultaneously transmitted and / or received via two antennas. Even with SVDO systems (Simultaneous Voice Data Optimized), signals are simultaneously transmitted and / or received via two antennas. Accordingly, the circuit arrangement described above offers advantages in particular with regard to these systems. However, it can also be used to improve linearity when using other transmission standards.
  • In the following the invention will be explained in more detail by means of exemplary embodiments and the associated figures. The figures show diagrammatic and not true to scale representations of various embodiments of the invention.
  • 1 shows a duplexer.
  • 2 also shows the in 1 shown duplexer, wherein the power level profile is given for two different signals in the duplexer.
  • 3 shows a circuit arrangement comprising two duplexers.
  • 4 shows a second embodiment of the duplexer.
  • 5 shows a third embodiment of the duplexer.
  • 6 shows a fourth embodiment of the duplexer.
  • 7 shows a fifth embodiment of the duplexer.
  • 8th shows a sixth embodiment of the duplexer.
  • 9 shows a seventh embodiment of the duplexer.
  • 1 shows a duplexer according to the invention 1 , The duplexer 1 has an antenna connection 2 , a transmission connection 3 and a reception terminal 4 on. The transmission connection 3 is via a transmission path 10 with the antenna connection 2 connected. The receiving connection 4 is via a reception path 11 connected to the antenna connector.
  • 1 further shows that the antenna port 2 with an antenna 5 connected is. Furthermore, the transmission connection 3 and the receiving terminal 4 be connected to a transmit-receive circuit (not shown). The duplexer 1 is particularly suitable for use in a mobile terminal in which it is connected to an antenna 5 is connected via which signals are received and sent simultaneously. These signals are, for example, signals whose frequencies lie in the frequency bands defined according to the mobile radio standards, in particular in the LTE frequency bands.
  • The in 1 shown duplexer 1 has a first bandpass filter 6 and a second bandpass filter 7 on. The first bandpass filter 6 is between the transmission port 3 and the antenna connector 2 arranged. The second bandpass filter 7 is between the receiving port 4 and the antenna connector 2 arranged.
  • Furthermore, the duplexer points 1 a first phase shifter 8th on. The first phase shifter 8th is between the second bandpass filter 7 and the antenna connector 2 arranged.
  • Furthermore, the duplexer points 1 a directional line 9 on. The directional guidance 9 is between the first bandpass filter 6 and the antenna connector 2 arranged. The directional guidance 9 is characterized by a preferred passage direction. It has a lower insertion loss for signals passing through it in the preferred forward direction than for signals passing through it in a direction opposite to the preferred forward direction.
  • The directional guidance 9 is arranged such that its preferred transmission direction from the transmission port 3 to the antenna connection 2 goes. Accordingly, transmission signals are transmitted at the transmission terminal 3 of the duplexer 1 be fed in the directional line 9 only slightly attenuated and reach accordingly the antenna 5 almost undamped. Conversely, interference signals from the antenna 5 be received and in the transmission path 10 in the direction of the transmission connection 3 penetrate, from the directional line 9 more subdued.
  • The directional guidance 9 For example, in its preferred forward direction, it has an insertion loss between 0.2 and 1.0 dB. Preferably, it has here an insertion loss of 0.5 to 0.7 dB. In the direction opposite to the preferred transmission direction, the directional line has an insertion loss of 5 to 50 dB, preferably 8 to 25 dB. These data refer to signals whose frequency lies in one of the bands of the LTE mobile radio standard. In particular, these data relate to signals whose frequencies are in the band 2 of the LTE standard.
  • 2 explains the operation of the in 1 illustrated duplexer 1 FIG. 2, wherein, using an example calculation, the power level profile for two different signals in the duplexer 1 is specified. In this case, respective frequency f 1 or f 2 of the two signals lies in the passband of the first bandpass filter 6 ,
  • A first signal is sent to the transmission port 3 applied as a transmission signal with a frequency f 1 and a signal strength of 26.6 dBm. The frequency f 1 is in the passband range of the first bandpass filter 6 , In the first bandpass filter 6 this signal is attenuated by 2 dB, making it between the first bandpass filter 6 and directional guidance 9 has a signal strength of 24.6 dBm. The transmission signal passes through the directional line 9 in the preferred forward direction and is accordingly attenuated here by 0.6 dB. Thus, the signal has a signal strength of 24 dBm, if it is the antenna 5 reached.
  • Further, from the antenna 5 Receive a second signal as a noise signal with frequency f 2 and the signal strength 14 dBm. It is further assumed here that the frequency f 2 lies in the same frequency band as the frequency f 1 of the first signal and thus in the passband of the first bandpass filter 6 located. The second signal passes through the directional line 9 opposite to the preferred forward direction and is accordingly attenuated by 10 dB. Further, the second signal becomes in the first bandpass filter 6 for more 2 dB muted. Accordingly, it has, if there is the transmission port 3 reached, only one signal strength of 2 dBm.
  • 2 makes it clear that it is the arrangement of the directional line proposed here 9 allows interference signals in the antenna connector 2 be injected, effectively suppress. In particular, allows the directional line 9 also a strong attenuation of interfering signals that are in the frequency band of the transmission signal. This also allows nonlinearities of the duplexer 1 , which result from mixed terms of these interference signals and the transmission signals, be significantly attenuated, since the power of the interference is strongly attenuated.
  • 3 further shows a circuit arrangement 12 in which two of the in 1 shown duplexer 1 with a transmit-receive circuit 13 are connected. The transmit-receive circuit 13 has amplifier 15 . 16 on, each one of the amplifier 15 . 16 with the transmission connection 3 of the respective duplexer 1 connected is. For each of the two duplexers 1 is a directional guidance 9 such between the respective first bandpass filter 6 and the respective antenna connection 2 arranged that the preferred direction of passage of the directional line 9 from the first bandpass filter 6 to the antenna connection 2 goes.
  • Furthermore, the antenna connection 2 one of the two duplexers 1 with a first antenna 5 connected. The antenna connection 2 the other of the two duplexers 1 is with a second antenna 14 connected.
  • The circuit arrangement 12 is suitable, for example, for use with data transmission in SV-LTE mode (Simultaneous Voice-LTE). The circuit arrangement 12 allows simultaneous data on the first antenna 5 to transfer and a conversation over the second antenna 14 respectively. It can be used both for data transfer over the first antenna 5 as well as for signal transmission via the second antenna 14 Frequencies from a single frequency band, such as the LTE band 2 , be used.
  • In this case, those from the first antenna 5 radiated signals into the second antenna 14 coupled as interference signals. Conversely, those of the second antenna 14 radiated signals into the first antenna 5 coupled as interference signals. The problem in particular is that it in this configuration to non-linear behavior of the circuit 12 can come when mixed products of the interference signals and the transmission signals arise and the frequency of these mixed products is in the frequency band of the respective received signal.
  • The duplexer 1 However, each ensures good decoupling of the one antenna 5 . 14 in the other antenna 14 . 5 coupled interference signals. As a result, the above-described occurrence of mixed terms, which could cause a non-linear behavior, can be decisively suppressed. The circuit arrangement 12 Therefore, it allows the non-linear behavior when operating two antennas 5 . 14 can occur in the same frequency band, strongly suppress.
  • By using the directional line 9 in the transmission branch of the duplexer 1 The noise power can be reduced by about 10 dB before the first band pass filter 6 reached.
  • The advantages described here in connection with SV-LTE can also be exploited in Simultaneous Voice Data Optimized (SVDO) systems. These systems also make it possible to have a conversation at the same time and to transmit data independent of the call using frequencies of the same frequency band for both.
  • As discussed above, the duplexer is 1 particularly advantageous in configurations in which two frequencies from a single transmit frequency band can combine with each other so that their mixing products lie in the receive frequency band associated with that transmit frequency band. The arrangement of the directional line 9 However, in the transmission path also causes in other configurations an improved suppression of interference.
  • 4 shows a second embodiment of the duplexer 1 , At the in 4 shown duplexer 1 is the receiving terminal 4 balanced. At the in 1 shown duplexer 1 is the receiving terminal 4 however, single-ended. Otherwise, the two duplexers vote 1 agree with each other.
  • 5 shows a third embodiment of the duplexer 1 , The duplexer 1 according to the third embodiment is different from that in 1 shown duplexer 1 in that he has a second phase shifter 17 having. The second phase shifter 17 is in the transmission path 10 arranged. The second phase shifter 17 is between the directional line 9 and the antenna connector 2 arranged. At the in 5 shown duplexer 1 is the receiving terminal 4 single-ended.
  • In a fourth embodiment, the receiving terminal 4 be balanced. The fourth embodiment is in 6 shown.
  • 7 shows a fifth embodiment of the duplexer 1 , The duplexer 1 according to the fifth embodiment differs from the duplexer 1 according to the third embodiment in that the first bandpass filter 6 and the second bandpass filter 7 are each tunable in their respective passband. This allows the duplexer 1 be set to different frequency ranges and is thus suitable for the transmission and reception of signals from these frequency ranges. By the tunable passbands of the first and second bandpass filters 6 . 7 will be the bandwidth in which the duplexer 1 can be used, increased. However, this bandwidth is due to a passband of the directional line 9 limited.
  • 8th shows a sixth embodiment of the duplexer 1 , in which also the passband of the directional line 9 is tunable. In particular, the frequency characteristic of the directional line 9 be matched. Thus, the bandwidth of the duplexer 1 no longer through the passband of the directional line 9 limited.
  • 9 shows a seventh embodiment of the duplexer 1 in which also the first and second phase shifters 8th . 17 are tunable. In particular, the frequency characteristics of the first and second phase shifters 8th . 17 be tuned, so that the phase shifter 8th . 17 can be optimized to the respective frequency band.
  • 7 . 8th and 9 each show the receiving connection 4 in one embodiment as a single-ended connection. In alternative embodiments, however, this can also be designed to be balanced.
  • For the in 3 shown circuit arrangement 12 can be any two duplexers 1 be combined according to one of the first to seventh embodiments.
  • LIST OF REFERENCE NUMBERS
  • 1
     duplexer
    2
     antenna connection
    3
     transmitting terminal
    4
     receiving terminal
    5
     (first) antenna
    6
     first bandpass filter
    7
     second bandpass filter
    8th
     first phase shifter
    9
     direction line
    10
     transmission path
    11
     receive path
    12
     circuitry
    13
     Transmit-receive circuit
    14
     second antenna
    15
     amplifier
    16
     amplifier
    17
     second phase shifter
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102011018918 A1 [0003]

Claims (14)

  1. A duplexer ( 1 ), comprising - an antenna connector ( 2 ), - a transmitting connection ( 3 ), and - a reception terminal ( 4 ), whereby between the transmitting connection ( 3 ) and the antenna connection ( 2 ) a first bandpass filter ( 6 ), and wherein between the first bandpass filter ( 6 ) and the antenna connection ( 2 ) a directional line ( 9 ) is arranged.
  2. Duplexer ( 1 ) according to claim 1, wherein the directional line ( 9 ) is arranged such that signals that the directional line ( 9 ) in the direction of the transmission port ( 3 ) to the antenna connector ( 2 ), are less attenuated than signals that the directional line ( 9 ) in the opposite direction.
  3. Duplexer ( 1 ) according to one of the preceding claims, wherein the directional line ( 9 ) has a maximum insertion loss of 1.0 dB, which acts on signals that the directional line ( 9 ) in the direction of the transmission port ( 3 ) to the antenna connector ( 2 ) happen.
  4. Duplexer ( 1 ) according to one of the preceding claims, wherein the directional line ( 9 ) has an insertion loss between 0.2 dB and 1.0 dB, which acts on signals that the directional line ( 9 ) in the direction of the transmission port ( 3 ) to the antenna connector ( 2 ) happen.
  5. Duplexer ( 1 ) according to one of the preceding claims, wherein the directional line ( 9 ) has an insertion loss of at least 5 dB, which acts on signals that the directional line ( 9 ) in the direction of the antenna connector ( 2 ) to the transmitting connection ( 3 ) happen.
  6. Duplexer ( 1 ) according to one of the preceding claims, wherein the directional line ( 9 ) has an insertion loss between 8 dB and 25 dB, which acts on signals which are the directional line ( 9 ) in the direction of the antenna connector ( 2 ) to the transmitting connection ( 3 ) happen.
  7. Duplexer ( 1 ) according to one of the preceding claims, wherein the first bandpass filter ( 6 ) has a tunable passband.
  8. Duplexer ( 1 ) according to one of the preceding claims, wherein the directional line ( 9 ) has a tunable frequency characteristic tunable to different transmission frequencies.
  9. Duplexer ( 1 ) according to one of the preceding claims, wherein between the receiving terminal ( 4 ) and the antenna connection ( 2 ) a second bandpass filter ( 7 ) and a first phase shifter ( 8th ) are arranged.
  10. Duplexer ( 1 ) according to claim 10, wherein the second bandpass filter ( 7 ) has a tunable passband.
  11. Duplexer ( 1 ) according to one of the preceding claims, wherein between the directional line ( 9 ) and the antenna connection ( 2 ) a second phase shifter ( 17 ) is arranged.
  12. Duplexer ( 1 ) according to claim 10 and 12, wherein the first and the second phase shifter ( 8th . 17 ) have a tunable frequency characteristic tunable to different transmission frequencies.
  13. Circuit arrangement comprising a first duplexer ( 1 ) according to one of the preceding claims and a second duplexer ( 1 ) according to one of the preceding claims.
  14. Circuit arrangement according to claim 14, wherein a first antenna ( 5 ) with the antenna connector ( 2 ) of the first duplexer ( 1 ) and a second antenna ( 14 ) with the antenna connector ( 2 ) of the second duplexer ( 1 ) connected is.
DE201310111798 2013-10-25 2013-10-25 duplexer Pending DE102013111798A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201310111798 DE102013111798A1 (en) 2013-10-25 2013-10-25 duplexer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310111798 DE102013111798A1 (en) 2013-10-25 2013-10-25 duplexer
PCT/EP2014/069708 WO2015058901A1 (en) 2013-10-25 2014-09-16 Duplexer having an isolator in the transmission path

Publications (1)

Publication Number Publication Date
DE102013111798A1 true DE102013111798A1 (en) 2015-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE201310111798 Pending DE102013111798A1 (en) 2013-10-25 2013-10-25 duplexer

Country Status (2)

Country Link
DE (1) DE102013111798A1 (en)
WO (1) WO2015058901A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5659886A (en) * 1993-09-20 1997-08-19 Fujitsu Limited Digital mobile transceiver with phase adjusting strip lines connecting to a common antenna
EP1487121A1 (en) * 2003-06-11 2004-12-15 Telefonaktiebolaget LM Ericsson (publ) Tunable isolator circuit
DE102004039674A1 (en) * 2004-08-16 2005-11-10 Siemens Ag Arrangement for signal transmission between first base stations, radio communications terminal has duplexer with two transmission-reception filters tunable to two carrier frequency ranges of FDD radio signal transmission
US20090040109A1 (en) * 2005-03-15 2009-02-12 Akihiko Iguchi Antenna Device and Wireless Communication Device Using the Same
DE102011018918A1 (en) 2011-04-28 2012-10-31 Epcos Ag circuitry

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5212485B2 (en) * 2009-01-29 2013-06-19 株式会社村田製作所 Duplexer module
US8339216B2 (en) * 2009-10-01 2012-12-25 Ubidyne, Inc. Duplexer and method for separating a transmit signal and a receive signal
US8908668B2 (en) * 2011-09-20 2014-12-09 Avago Technologies General Ip (Singapore) Pte. Ltd. Device for separating signal transmission and reception and communication system including same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5659886A (en) * 1993-09-20 1997-08-19 Fujitsu Limited Digital mobile transceiver with phase adjusting strip lines connecting to a common antenna
EP1487121A1 (en) * 2003-06-11 2004-12-15 Telefonaktiebolaget LM Ericsson (publ) Tunable isolator circuit
DE102004039674A1 (en) * 2004-08-16 2005-11-10 Siemens Ag Arrangement for signal transmission between first base stations, radio communications terminal has duplexer with two transmission-reception filters tunable to two carrier frequency ranges of FDD radio signal transmission
US20090040109A1 (en) * 2005-03-15 2009-02-12 Akihiko Iguchi Antenna Device and Wireless Communication Device Using the Same
DE102011018918A1 (en) 2011-04-28 2012-10-31 Epcos Ag circuitry

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