WO2014198457A1 - Mobilfunkgerät mit gemeinsam genutztem filter, verfahren zum betrieb des mobilfunkgeräts und verwendung eines filters - Google Patents
Mobilfunkgerät mit gemeinsam genutztem filter, verfahren zum betrieb des mobilfunkgeräts und verwendung eines filters Download PDFInfo
- Publication number
- WO2014198457A1 WO2014198457A1 PCT/EP2014/059084 EP2014059084W WO2014198457A1 WO 2014198457 A1 WO2014198457 A1 WO 2014198457A1 EP 2014059084 W EP2014059084 W EP 2014059084W WO 2014198457 A1 WO2014198457 A1 WO 2014198457A1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/005—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/005—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/38—Transceivers, 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
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/38—Transceivers, 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
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
Definitions
- the invention relates to mobile devices with an RF filter, which is used for at least two different modes.
- the invention further relates to methods for operating a mobile device and the use of an RF filter for at least two different modes.
- the frequency range reserved for mobile systems worldwide includes many frequency bands.
- Common mobile radio standards in Europe are GSM (Global System for Mobile Communication) and UMTS (Universal Mobile Telecommunications Systems).
- Common duplexing methods are Frequency Division Duplexing (FDD) methods in which transmit and receive signals are transmitted simultaneously in principle, but at different frequencies, TDD (Time Division Duplexing), in which transmit and receive signals transmit alternately in successive time slots and the duplexing method of the GSM standard, in which transmit and receive signals are transmitted on different frequencies as well as successively in time slots.
- FDD Frequency Division Duplexing
- TDD Time Division Duplexing
- the duplexing method of the GSM standard in which transmit and receive signals are transmitted on different frequencies as well as successively in time slots.
- a mobile device comprises an antenna, a transceiver circuit and an RF filter connected between the antenna and the transceiver circuit.
- the transceiver circuit has a first port for transmitting first RF signals and a second port for transmitting second RF signals.
- the second RF signals are different from the first RF signals.
- the RF filter has an antenna port coupled to the antenna and a transceiver port coupled to the transceiver circuit.
- the transceiver port of the HF Filters are coupled to the first port and to the second port of the transceiver circuit.
- the antenna is used to send or receive RF signals.
- the transceiver circuit may include circuit components such as power amplifiers wired in respective transmit signal paths and low noise amplifiers that may be interconnected in receive signal paths.
- the RF filter is part of the front-end circuit that connects the antenna or possibly several antennas of the mobile device with corresponding ports of the transceiver circuit.
- the coupling between antenna and RF filter on the one hand and between RF filter and transceiver circuit on the other hand means that the corresponding elements can be connected directly to one another. It is also possible that further circuit elements, for. For example, impedance matching elements, duplexers, diplexers, antenna switches or other filters can be connected in corresponding signal paths between the antenna and the transceiver circuit.
- a mobile device in which two different ports of the transceiver circuit are coupled to the antenna via one and the same RF filter.
- the bandwidth of the globally available RF frequencies for mobile radio communication is very large, there are overlaps of individual frequency bands of different mobile radio standards or duplexing.
- the use of an RF filter for just such different signals of a same or similar frequency reduces the complexity of the front-end circuit, and thus the complexity of the Mo ⁇ bilfunkêts, whereby the number of RF filters is re ⁇ cuted.
- the number of required pins is at one Transceiver chip, so on the chip, in which at least parts of the transceiver circuit are realized, reduced.
- the complexity of a band selection switch when before ⁇ handen reduced.
- the signal quality of RF signals propagating in signal paths of the device is fundamentally improved. It should be noted, however, that the double or multiple RF filter must not only comply with the specifications of a mobile radio standard and a duplex method. Rather, partly contradictory requirements are now placed on the RF filter, so that the design of the filter must be particularly carefully and his physical realization by tending to smaller tolerances he is difficult.
- the first RF signals differ from the second RF signals by using different duplexing techniques.
- FDD techniques Frequency Division Duplexing techniques
- TDD techniques Time-based duplexing techniques
- CDMA Code Division Multiple Access
- the first and second RF signals belong to different cellular standards.
- Mobil ⁇ radio standards come z.
- AMPS Advanced Mo ⁇ bile Phone Service
- DECT Digital Enhanced Cordless Telecom Communications
- GSM Global System for Mobile Communications
- LTE Long Term Evolution
- PCN Personal Communication Network
- PDC Personal Digital Cellular
- RTMS Radio Telephone Mobile System
- CT1 or CT1 + or CT2 Cordless Telephone
- UMTS Universal Mobile Telecommunications System
- LAN Wireless Local Area Network
- iMAX orldwide Interoperability for Microwave Access
- IMT-Advanced International Mobile Telecommunications Advanced.
- the first and second RF signals are transmitted in frequency bands having a common frequency, ie, the frequency bands of the first and second RF signals overlap, as there is a common frequency that is both part of the frequency band of the first RF signals as well as being part of the frequency band of the second RF signals.
- the frequency bands of the first RF signals and the second RF signals are not identical, although technically possible. Rather, the RF filter must be designed so that both the first RF signals and the second RF signals can pass through the filter. On the other hand, other unwanted RF signals with frequency components which belong neither to the frequency band of the first RF signals nor to the frequency band of the second RF signals can not pass through the RF filter.
- the RF filter is therefore a bandpass filter with a bandpass comprising the frequency bands of the two RF signals. Realizing bandpass filters with a wide passband is by no means trivial.
- the Q factor decreases from about 900 to about 300 as the relative bandwidth increases from 5% to 11%.
- a maximum bandwidth of 5%, 8%, 10% or 11% can thus limit the possible combinations allowed.
- the first and second RF signals are transmitted in a frequency band having a maximum relative bandwidth of 11%.
- the frequency band is a so-called common frequency band, which includes the frequencies of the frequency bands of the first and second RF signals as subsets.
- SAW Surface Acoustic Wave
- BAW Bulk Acoustic Wave
- GBAW Guided Bulk Acoustic
- Such RF filters operate with electrode structures and a piezoelectric material, wherein electromagnetic RF signals are converted into acoustic waves and vice versa.
- the RF filter comprises a piezoelectric material and an electrode structure on the piezoelectric material. It is also possible that a piezoelectric material is arranged between two electrode structures formed over a large area in a BAW component. The electrode structure is thus arranged on the piezoelectric material and the orientation of the piezoelectric material is selected so that the bandwidth of the RF filter (ie the "common bandwidth") is greater than the smaller of the two bandwidths of the two RF signals.
- the orientation of the piezoelectric material ie the orientation of the piezoelectric axes or the axes of the unit cells of the piezoelectric material relative to a coordinate system of the entire component and to the electrode structures can be specified by Euler angle.
- Euler angle A suitable choice of Euler angles enables a sufficiently large bandwidth without other electroacoustic properties are too severely degraded.
- the transceiver ⁇ port of the RF-Fil ters ports coupled to the transceiver circuitry, wherein the two or more coupled to the 'filter ports of the transceiver circuitry for transmitting TX (transmit and :-) / or RX
- Band numbers> 1 and ⁇ 26 represent bands of an FDD system according to the following table: Band ⁇ Uplink Band Downlink Band Relative Relative Number (TX, MHz) (RX, MHz) Band ⁇ Band ⁇ Broad Bandwidth
- GSM Band Downlink Band (MHz) Relative Bandwidth In the GSM standard, transmit and receive signals are transmitted and received both at different frequencies and in different time slots. Relevant in the first place are the receive frequency bands, which are given below: GSM Band Downlink Band (MHz) Relative Bandwidth
- a method for operating one of the above-mentioned embodiments of a mobile radio device is carried out in such a way that the RF filter is operated simultaneously or successively both with first RF signals and with second signals which are different from the first RF signals.
- the first and / or second RF signals are fed simultaneously or in time slots from the transceiver circuit to the antenna or from the antenna to the transceiver circuit through the RF filter.
- the use of a single RF filter in a mobile radio for RF signals is thus actually possible and reduces the complexity and thus the manufacturing cost of a corresponding mobile device.
- the RF signals can be assigned to different multiplexing methods or different mobile radio standards.
- FIG. 2 shows an embodiment in which the RF filter as
- FIG. 3 shows an embodiment with a crossover between the filter and the antenna
- FIG. 4 shows an embodiment with further signal paths and a band selection switch
- Figure 5 shows an imple mentation form with a variety
- FIG. 6 shows an embodiment in which the HF filter is part of a duplexer
- Figure 7 shows an embodiment of a mobile device with two
- FIG. 1 shows schematically a mobile device MFG with an RF filter F, a transceiver circuit TS and ports over which the filter and the transceiver circuit are coupled.
- the mobile device has an antenna port AP and a transceiver port TP.
- the RF filter F is coupled to an antenna via the antenna port.
- the RF filter F is coupled to the ports of the transceiver circuit TS.
- the RF filter F is coupled to the ports of the transceiver circuit TS.
- Transceiver circuit has a first port PI and a second port P2, via which the transceiver port of the filter is coupled to the transceiver circuit.
- the embodiment shown in Figure 1 shows a direct connection of the filter with the antenna and the transceiver circuit.
- Other circuit elements may alternatively be interconnected between the antenna and the transceiver circuit to make impedance adjustments or to perform other filtering functions.
- Figure 2 shows an embodiment in which the RF filter F is designed as a bandpass filter BPF.
- the bandpass filter BPF then preferably has a pass band configured such that frequencies of the first RF signals and the second RF signals can pass.
- Figure 3 shows an embodiment in which a crossover W is connected between the RF filter F and the antenna. Thus, different signal paths can be coupled to the same antenna via the crossover.
- the crossover can be designed as a diplexer, as a duplexer or as a band selection filter. In another
- the mobile device comprises another bandpass filter, which is connected in parallel to the RF filter F and allows the transmission of transmit or receive signals between the antenna and the transceiver circuit.
- Figure 4 shows an imple mentation form, in which the crossover W is designed as a band selector switch S, via which the antenna can be selectively connected to one of three, or more generally: one of many parallel signal paths from the antenna to the transceiver circuit TS.
- FIG. 5 shows an embodiment in which the RF filter F is connected via balanced (balanced) signal lines to corresponding ports of a low-noise amplifier LNA.
- asymmetric (unbalanced) signal lines are possible in which an RF signal is conducted in relation to a reference potential.
- Balanced guided signal lines have two parallel line sections, wherein in each line section, an RF signal with a phase offset of 180 ° relative to the other line signal is performed.
- Such a balanced signal line is less sensitive to common mode noise.
- the mobile device may comprise, in addition to the previously mentioned RF filter F, further RF filters F2 which serve for common use with different RF signals of a first and a second type.
- the mobile device may comprise a plurality of further filters in parallel signal paths and thus master a variety of transmission standards and duplexing techniques.
- FIG. 6 shows an embodiment in which the RF filter F is designed as a transmission filter FRX of a duplexer DU. About this receive filter FRX z. B. signals of the FDD band 2 and GSM 1900 propagate received signals and signals of the TDD band 36.
- Figure 7 shows an imple mentation form, in which the mobile device MFG in addition to the antenna AI comprises a further antenna A2, so that, for example, RF signals additional frequency bands, z. B. at 2.7 GHz, can be sent and received.
- the common use of an RF filter F is not disturbed by further antennas, further signal paths and further filters and transceiver circuits and segments of a common transceiver circuit.
- the use of different duplexing methods or different transmission standards for different frequency bands is compatible with other conventional circuit elements of a mobile device, so that the cost of adaptation to other filters, if necessary, except for impedance adjustments, remains low.
- FIG. 8 shows the relative position of typical TDD and / or GSM frequency bands.
- the frequency bands marked by hatching include two or more in their frequency range. typical frequency bands.
- the reference numerals associated with the respective combined frequency band denote these frequency bands.
- FIG. 8 is thus the graphical representation of the band combinations shown in the table above.
- PA power amplifier in the transmission signal path
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transceivers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016518883A JP6741575B2 (ja) | 2013-06-10 | 2014-05-05 | 共通に使用されるフィルタを有するモバイル通信装置、このモバイル通信装置の動作方法およびフィルタの使用 |
US14/894,275 US9929751B2 (en) | 2013-06-10 | 2014-05-05 | Mobile transceiver with shared user filter, method for the operation of the mobile transceiver and use of a filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013105999.6A DE102013105999A1 (de) | 2013-06-10 | 2013-06-10 | Mobilfunkgerät mit gemeinsam genutztem Filter, Verfahren zum Betrieb des Mobilfunkgeräts und Verwendung eines Filters |
DE102013105999.6 | 2013-06-10 |
Publications (1)
Publication Number | Publication Date |
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WO2014198457A1 true WO2014198457A1 (de) | 2014-12-18 |
Family
ID=50733026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2014/059084 WO2014198457A1 (de) | 2013-06-10 | 2014-05-05 | Mobilfunkgerät mit gemeinsam genutztem filter, verfahren zum betrieb des mobilfunkgeräts und verwendung eines filters |
Country Status (4)
Country | Link |
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US (1) | US9929751B2 (de) |
JP (2) | JP6741575B2 (de) |
DE (1) | DE102013105999A1 (de) |
WO (1) | WO2014198457A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170093442A1 (en) * | 2015-09-28 | 2017-03-30 | Skyworks Solutions, Inc. | Integrated front-end architecture for carrier aggregation |
WO2019059085A1 (ja) * | 2017-09-21 | 2019-03-28 | 株式会社村田製作所 | フィルタ回路および高周波モジュール |
DE102018112847A1 (de) * | 2018-05-29 | 2019-12-05 | RF360 Europe GmbH | Multiplexerschaltung mit verbesserter Isolation und Multiplexer-Bauelement |
JP7093694B2 (ja) * | 2018-07-17 | 2022-06-30 | 太陽誘電株式会社 | 通信用モジュール |
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WO1996006490A1 (en) * | 1994-08-18 | 1996-02-29 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
DE10053205A1 (de) | 2000-10-26 | 2002-05-08 | Epcos Ag | Kombinierte Frontendschaltung für drahtlose Übertragungssysteme |
EP1684438A2 (de) * | 2004-12-30 | 2006-07-26 | M/A-Com, Inc. | Voll-Duplex-Dualband-Mobilfunkgerät |
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CA2102914A1 (en) | 1991-05-13 | 1992-11-26 | Robert C. Dixon | Dual mode transmitter and receiver |
FI102432B1 (fi) * | 1996-09-11 | 1998-11-30 | Lk Products Oy | Kaksitoimisen radioviestimen antennisuodatusjärjestely |
GB0208130D0 (en) * | 2002-04-09 | 2002-05-22 | Koninkl Philips Electronics Nv | Improvements in or relating to wireless terminals |
KR101127022B1 (ko) * | 2004-03-16 | 2012-03-26 | 히타치 긴조쿠 가부시키가이샤 | 고주파 회로 및 고주파 부품 |
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JP2008103848A (ja) * | 2006-10-17 | 2008-05-01 | Pioneer Electronic Corp | 高周波信号受信装置及び受信機 |
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US9337991B2 (en) * | 2013-04-19 | 2016-05-10 | Mediatek Singapore Pte. Ltd. | Wireless communication unit, radio frequency module and method therefor |
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-
2013
- 2013-06-10 DE DE102013105999.6A patent/DE102013105999A1/de active Pending
-
2014
- 2014-05-05 US US14/894,275 patent/US9929751B2/en active Active
- 2014-05-05 JP JP2016518883A patent/JP6741575B2/ja active Active
- 2014-05-05 WO PCT/EP2014/059084 patent/WO2014198457A1/de active Application Filing
-
2020
- 2020-04-08 JP JP2020069894A patent/JP2020123968A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1996006490A1 (en) * | 1994-08-18 | 1996-02-29 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
DE10053205A1 (de) | 2000-10-26 | 2002-05-08 | Epcos Ag | Kombinierte Frontendschaltung für drahtlose Übertragungssysteme |
EP1684438A2 (de) * | 2004-12-30 | 2006-07-26 | M/A-Com, Inc. | Voll-Duplex-Dualband-Mobilfunkgerät |
Also Published As
Publication number | Publication date |
---|---|
JP2016524416A (ja) | 2016-08-12 |
JP6741575B2 (ja) | 2020-08-19 |
US9929751B2 (en) | 2018-03-27 |
JP2020123968A (ja) | 2020-08-13 |
DE102013105999A1 (de) | 2014-12-24 |
US20160134308A1 (en) | 2016-05-12 |
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