CN106712795A - Radio frequency circuit of LTE carrier wave polymerization technology and communication equipment thereof - Google Patents

Radio frequency circuit of LTE carrier wave polymerization technology and communication equipment thereof Download PDF

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Publication number
CN106712795A
CN106712795A CN201510785389.XA CN201510785389A CN106712795A CN 106712795 A CN106712795 A CN 106712795A CN 201510785389 A CN201510785389 A CN 201510785389A CN 106712795 A CN106712795 A CN 106712795A
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China
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radiofrequency signal
roads
switches
frequency
signal
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CN201510785389.XA
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Chinese (zh)
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CN106712795B (en
Inventor
顾江波
潘光胜
曾伟才
张和平
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华为终端(东莞)有限公司
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    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path

Abstract

The invention discloses a radio frequency circuit of an LTE carrier wave polymerization technology and communication equipment thereof. The radio frequency circuit comprises at least one L*M switch, a combiner and a 1*N switch. When the L*M switch is in a carrier wave polymerization mode, switch logic of the L*M switch is selectively connected to a radio frequency path of the combiner. During non-carrier-wave polymerization mode work, through an L*M switch device and one 1*N switch, the combiner is bypassed so that performance in a non-carrier-wave polymerization work mode is guaranteed. In the invention, the radio frequency circuit of a new LTE carrier wave polymerization technology is adopted, circuit insertion losses of a communication terminal under the non-carrier-wave polymerization work mode are effectively reduced, simultaneously a large occupation space problem of a plurality of antenna circuits is avoided, and through flexibly applying the L*M switch device, the radio frequency circuit can satisfy more scene applications.

Description

The radio circuit and its communication equipment of LTE carrier aggregation technology
Technical field
The present invention relates to the communications field, more particularly to a kind of radio frequency electrical of LTE carrier aggregation technology Road and its communication equipment..
Background technology
In wireless communication technology field, Long Term Evolution (Long Term Evolution, LTE) is By third generation partner program (3rd Generation Partnership Project, 3GPP) tissue system Fixed UMTS (Universal Mobile Telecommunications System, UMTS) technical standard, carrier aggregation technology characteristic is initially added into from Rel.10 versions, current The protocol version of LTE has evolved to Rel.12 versions.According in the Rel.13 versions that will be issued On rough estimates, existing more than 40 of LTE frequency ranges, frequency range from 450MHz-3800MHz, The load of 2 frequency range combined carriers (2Inter-band Component Carriers, Inter-band 2CC) Ripple polymerization (Carrier Aggregation, CA) combination has surpassed 50,3 frequency range combined carriers (3 Inter-band Component Carriers, Inter-band 3CC) carrier aggregation combination also have 40 It is multiple.As new frequency range and frequency spectrum are constantly proposed and are provided, and global operator is also continuing Ground proposes more carrier aggregation frequency range requirements of combination, it is therefore necessary to proposes to adapt to and supports the need The radio circuit asked.
Currently, in the industry frequently with two kinds of technical schemes realizing flexible multiband carrier aggregation group Close, one kind is using tri-frequency combiner scheme;Another kind is using multiple antennas scheme.
If using tri-frequency combiner scheme, by the radio circuit using tri-frequency combiner come complete Into the combining function of multiband carrier aggregation.It is particularly, existing to use three frequency combinings refering to Fig. 1 The radio circuit of device includes antenna 11, tri-frequency combiner 12 and three four work devices 13.Antenna 11 It is connected with tri-frequency combiner 12, tri-frequency combiner 12 is connected with three four work devices 13 respectively again, The input of each frequency range radiofrequency signal is carried out respectively by three four work devices 13, afterwards into three frequencies To be combined, the radiofrequency signal after combining carries out radio frequency letter to combiner 12 via antenna 11 again Number transmitting.However, there is technological deficiency in above-mentioned radio circuit, i.e., in LTE frequency ranges In 1710MHz-2170MHz and 2300MHz-2690MHz, above-mentioned radio circuit can only be inadequate Combining and the radio-frequency performance of 1710MHz-2170MHz and 2500MHz-2690MHz frequency ranges are realized, 2300MHz-2400MHz frequency ranges cannot be simultaneously supported, using limited;At the same time, also exist The multiple joint of signal on circuit and cause the excessive problem of circuit Insertion Loss.That is, existing use three It is relatively low that the radio circuit of frequency combiner is commonly present squareness factor, it is impossible to realizes two narrower frequency ranges in interval The problem of combining.
If using multiple antennas scheme, carrier wave is completed by the antenna of multiple covering different frequency range Polymerizable functional.Refering to Fig. 2, particularly, the radio circuit of existing use multiple antennas includes first day Line 21, the second antenna 22, combiner 23, two the one or four work devices 24 and the two or four work devices 25.Wherein, low-frequency range (Low Band, LB) is 698MHz-960MHz frequency ranges and intermediate frequency Section (Mid Band, MB) passes through respectively for the radiofrequency signal of 1710MHz-2170MHz frequency ranges After two the one or four work devices 24 carry out frequency range combining into combiner 23, then pass through first day again Line 21 carries out signal transmitting;High band (High Band, HB) is 2300MHz-2690MHz The radiofrequency signal of frequency range is directly connected via the two or four work device 25 with the second antenna 22, is then led to again Crossing the second antenna 22 carries out signal transmitting.However, using the antenna 22 of first antenna 21 and second Double-antenna structure for using this programme radio circuit communication terminal requirements of installation space compared with Height, the trend with the lightening development of communication terminal instantly is not inconsistent.
The content of the invention
The present invention solves the technical problem of a kind of radio frequency of LTE carrier aggregation technology of offer Circuit and its communication equipment, to reduce the Insertion Loss of radio-frequency channel, meet more lightening manufacture demand.
First aspect present invention provides a kind of radio circuit of LTE carrier aggregation technology, including extremely Few L × M switches, combiner and 1 × N switches;L × M switchs one end includes M roads First radiofrequency signal end, the other end includes L roads the second radiofrequency signal end;Combiner one end is included extremely Few two the 3rd radiofrequency signal ends, the other end is the 4th radiofrequency signal end;1 × N switchs one end bag At least two the 5th radiofrequency signal ends are included, the other end is the 6th radiofrequency signal end;Wherein, L, M, One the 3rd of N more than or equal to one end connection combiner in the second radiofrequency signal end of two, L roads Radiofrequency signal end, the other end in the second radiofrequency signal end of L roads connects one of 1 × N switches the Five radiofrequency signal ends, the 4th radiofrequency signal end of combiner connect 1 × N switches another the 5th Radiofrequency signal end, the 6th radiofrequency signal end of 1 × N switches is used to connect antenna;Radio circuit is extremely Few selectivity works in carrier aggregation mode and non-carrier aggregation scheme, is working in carrier aggregation mould During formula, at least one end in M roads the first radiofrequency signal end of L × M switches is successively via L roads the One the 3rd radiofrequency signal end, the 4th radiofrequency signal of one end, combiner in two radiofrequency signal ends End, a 5th radiofrequency signal end of 1 × N switches, and be connected with the 6th radiofrequency signal end, and L M roads the first radiofrequency signal end that other ends in the second radiofrequency signal end of road do not switch with L × M connects Connect;When non-carrier aggregation scheme is worked in, in M roads the first radiofrequency signal end of L × M switches At least one end successively via the one end in the second radiofrequency signal end of L roads, 1 × N switch one 5th radiofrequency signal end is connected with the 6th radiofrequency signal end, and its in the second radiofrequency signal end of L roads M roads the first radiofrequency signal end that his end does not switch with L × M is connected.
With reference to the implementation of first aspect, in the first possible implementation, combiner The frequency interval of the radiofrequency signal between at least two the 3rd radiofrequency signal ends is not less than first threshold, And when radio circuit works in non-carrier aggregation scheme, the 5th radiofrequency signal end of 1 × N switches At least part of frequency of the radiofrequency signal passed through is located in the frequency interval corresponding to first threshold, Wherein first threshold is defined by the separation number of combiner.
With reference to the first possible implementation of first aspect, in second possible implementation In, combiner includes three the 3rd radiofrequency signal ends, and its corresponding frequency range is respectively:Low-frequency range Low Band LB:698MHz-960MHz, Mid Frequency Mid Band MB:1710MHz-2170MHz With high band High Band HB:2300MHz-2690MHz.
With reference to the implementation of first aspect, in the third possible implementation, L × M is opened Close and go out cross selection switches more to enter two.
With reference to the implementation of first aspect, in the 4th kind of possible implementation, 1 × N is opened It is SP3T switch to close.
Second aspect provides the radio circuit of another LTE carrier aggregation technology, including at least one Individual L × M switches, combiner and 1 × N switches;L × M switchs one end includes M roads first Radiofrequency signal end, the other end includes L roads the second radiofrequency signal end;Combiner one end includes at least two Individual 3rd radiofrequency signal end, the other end is the 4th radiofrequency signal end;1 × N switchs one end to be included extremely Few two the 5th radiofrequency signal ends, the other end is the 6th radiofrequency signal end;Wherein, radio circuit is extremely Few selectivity works in carrier aggregation mode and non-carrier aggregation scheme, is working in carrier aggregation mould During formula, at least one end in M roads the first radiofrequency signal end of L × M switches is successively via L roads the One the 3rd radiofrequency signal end, the 4th radiofrequency signal of one end, combiner in two radiofrequency signal ends End, a 5th radiofrequency signal end of 1 × N switches, and realize that signal leads to the 6th radiofrequency signal Letter, and the M roads first that other ends in the second radiofrequency signal end of L roads do not switch with L × M penetrate Frequency signal end realizes signal communication;When non-carrier aggregation scheme is worked in, the M of L × M switches At least one end in the first radiofrequency signal end of road is sequentially via in the second radiofrequency signal end of L roads Signal communication is realized in end, a 5th radiofrequency signal end of 1 × N switches with the 6th radiofrequency signal end, And the radio frequency of M roads first that other ends in the second radiofrequency signal end of L roads do not switch with L × M is believed Signal communication is realized at number end.
With reference to the implementation of second aspect, in the first possible implementation, combiner is Pilot frequency combiner, including cavity resonator and circulator, cavity resonator and the 3rd radiofrequency signal end Coupling, circulator is coupled with the 4th radiofrequency signal end and cavity resonator respectively.
With reference to the implementation of second aspect, in second possible implementation, combiner exists Under carrier aggregation mode, first threshold is more than or equal to 300MHz.
With reference to the implementation of second aspect, in the third likely implementation, L × M The control interface of switch is to move Industry Processor Interface Mobile Industry Processor Interface MIPI, or universal input/output interface General Purpose Input Output GPIO。
The third aspect provide a kind of communication equipment, including signal processor, rear end radio circuit, Front radio-frequency circuit and antenna, front radio-frequency circuit are combine first aspect or first aspect the One to the 4th kind any one or combine the first of second aspect or second aspect to the third any one Possible implementation method, the 6th radiofrequency signal end and day of the 1 × N switches in front radio-frequency circuit Line is connected, and signal processor is switched by rear end radio circuit with the L × M in front radio-frequency circuit M roads the first radiofrequency signal end connection.
The beneficial effects of the invention are as follows:It is different from the situation of prior art, the LTE that the present invention is provided The radio circuit of carrier aggregation technology, in carrier aggregation mode, the switching logic of L × M switches It is alternatively connected to the radio frequency path of combiner;When non-carrier aggregation scheme works, by L × M Switching device and 1 × N switch, combiner are bypassed, by carrier aggregation and non-carrier By optionally bypass and path under polymerization both of which, inserting for radio-frequency channel is substantially reduced Damage, effectively reduce the circuit Insertion Loss that communication terminal is caused under non-carrier polymerization mode of operation;Ensure Performance for wireless communications of the communication terminal in weak signal, bulk needed for reducing meets more frivolous The manufacture demand of change;Again, the bypass functionality of L × M switches, makes the selection of frequency range interval richer Richness, can neatly add required band matching circuit according to actual conditions, realize many scenes Application requirement.
Brief description of the drawings
Fig. 1 is radio architectures schematic diagram in the prior art using tri-frequency combiner scheme;
Fig. 2 is radio architectures schematic diagram in the prior art using multiple antennas scheme;
Fig. 3 is the principle schematic one of radio circuit of the present invention, wherein, embody at radio circuit State when carrier aggregation mode;
Fig. 4 is the principle schematic two of radio circuit of the present invention, wherein, embody at radio circuit State when non-carrier aggregation scheme;
Fig. 5 is the logic state corresponding relation schematic diagram of L × M switches of radio circuit of the present invention;
Fig. 6 is the concrete structure schematic diagram of an implementation method of radio circuit of the present invention;
Fig. 7 is that using the radio frequency path of L × M switches, Insertion Loss is imitated under bypass and non-bypass in Fig. 6 True comparison schematic diagram;
Fig. 8 is another concrete structure schematic diagram of an implementation method of radio circuit of the present invention;
Fig. 9 is the another concrete structure schematic diagram of an implementation method of radio circuit of the present invention;
Figure 10 is the another concrete structure schematic diagram of an implementation method of radio circuit of the present invention;
Figure 11 is another concrete structure schematic diagram of an implementation method of radio circuit of the present invention;
Figure 12 is the principle schematic of another implementation method of radio circuit of the present invention;
Figure 13 is the principle schematic of an implementation method of communication equipment of the present invention.
Specific embodiment
It is the principle schematic one of radio circuit of the present invention refering to Fig. 3.Radio circuit of the invention When carrier aggregation mode is worked in, M roads the first radiofrequency signals end D1 of L × M switches 34 In one end successively via the one end in L roads the second radiofrequency signals end D2, one of combiner 33 3rd radiofrequency signal end D3, the 4th radiofrequency signal end D4, the 5th radio frequency of 1 × N switches 4 Signal end D5, and with the connection of the 6th radiofrequency signal D6, and L roads the second radiofrequency signals end D2 In other ends not with L × M switch 34 M roads the first radiofrequency signal end D1 be connected, that is, penetrate Frequency signal is via P1 path transmissions in diagram.Particularly, by radiofrequency signal via P1 path transmissions Before, the first radiofrequency signal end D1 input radio frequency signals of L × M switches 34 lead to radiofrequency signal The second radiofrequency signal end D2 outputs of L × M switches 34 are crossed, then radiofrequency signal passes through combiner 33 the 3rd radiofrequency signal end D3 output combiners 33 are combined, and combiner is passed through after combining The 4th radiofrequency signal end D4 output, the radiofrequency signal of output is via P1 path transmissions to 1 × N 5th radiofrequency signal end D5 of switch 32, then 32 the 6th radiofrequency signal end is switched by 1 × N D6 is transmitted to antenna 31, and radiofrequency signal is launched by antenna 31.
It is the principle schematic two of radio circuit of the present invention refering to Fig. 4.Radio circuit of the invention When non-carrier aggregation scheme is worked in, M roads the first radiofrequency signals end D1 of L × M switches 34 In at least one end switched via the one end in L roads the second radiofrequency signals end D2,1 × N successively 32 a 5th radiofrequency signal end D5 is connected with the 6th radiofrequency signal end D6, and L roads second Other ends in the D2 of radiofrequency signal end do not switch 34 M roads the first radiofrequency signal end with L × M D1 is connected, i.e., radiofrequency signal is via the P2 path transmissions in diagram.Particularly, by radiofrequency signal Before via P2 path transmissions, 34 and 1 × N switches 32 are switched to L × M and is configured, will Combiner 33 is bypassed.Then, it is input into from the first radiofrequency signal end D1 of L × M switches 34 Radiofrequency signal, makes radiofrequency signal via P2 path transmissions to antenna 31, and radio frequency is launched by antenna 31 Signal.It is with Fig. 3 differences:Fig. 4 is radio circuit of the invention in non-carrier polymerization mould Implementation principle during formula is illustrated, and the radiofrequency signal bang path in Fig. 3 is P1 paths, in Fig. 4 Radiofrequency signal bang path P2 paths.
With reference to Fig. 3 and Fig. 4, wherein, at least two the 3rd radiofrequency signal end D3 of combiner 33 Between the frequency interval of radiofrequency signal be not less than first threshold, and radio circuit works in non-load During ripple aggregation scheme, 1 × N switchs the radiofrequency signal that 32 the 5th radiofrequency signal end D5 is passed through At least part of frequency be located at first threshold corresponding to frequency interval in, wherein first threshold is by closing The separation number of road device 33 is defined, and reduces the Insertion Loss between frequency band.Further, combining herein Device 33 includes three the 3rd radiofrequency signal ends, and its corresponding frequency range is respectively:Low-frequency range (Low Band, LB):698MHz-960MHz, Mid Frequency (Mid Band, MB): 1710MHz-2170MHz and high band (High Band, HB):2300MHz-2690MHz, Realize that multiband is covered.L × M is switched, and L × M switch control logics are the port according to device Support quantity and actually realize demand, selection uses mobile Industry Processor Interface (Mobile Industry Processor Interface, MIPI) it is controlled.Combiner 33 herein is that three frequencies are closed Road device, combiner is combined to the corresponding frequency range of three the 3rd radiofrequency signal end D3.Herein, L × M switches go out cross selection switches more to enter two;Combiner is tri-frequency combiner;1 × N is switched It is SP3T switch.
It is that the L × M of radio circuit of the present invention switchs a kind of logic state of application examples refering to Fig. 5 Corresponding relation schematic diagram.L × M switches herein enter scene 2 cross selection switches for six, when L × When the logic state of M switches is 0xx0, TRx_1 ends connect with ANT_A ends;Work as logic state During for 0xx1, the TRx_2 ends of L × M switches connect with ANT_A ends;When logic state is During 1xx0, the TRx_1 ends of L × M switches connect with ANT_B ends, the like.
With reference to Fig. 3, Fig. 4 and Fig. 5, the radio circuit of LTE carrier aggregation technology of the invention An implementation method, including at least one L × M switches 34, combiner 33 and 1 × N are opened Close 32;L × M switchs 34 one end includes M roads the first radiofrequency signal end D1, and the other end includes L Road the second radiofrequency signal end D2;The one end of combiner 33 includes at least two the 3rd radiofrequency signal end D3, The other end is the 4th radiofrequency signal end D4;1 × N switchs 32 one end includes at least two the 5th radio frequencies Signal end D5, the other end is the 6th radiofrequency signal end D6;
Wherein, L, M, N are more than or equal to the one end in two, L roads the second radiofrequency signals end D2 A the 3rd radiofrequency signal end D3 of combiner 33 is connected, in L roads the second radiofrequency signals end D2 The other end connect a 5th radiofrequency signal end D5 of 1 × N switches 32, the of combiner 33 Another the 5th radiofrequency signal end D5 of four radiofrequency signal end D4,1 × N of connection switches 32,1 × 6th radiofrequency signal end D6 of N switches 32 is used to connect antenna 31;Meanwhile, radio frequency of the invention Circuit at least selectively works in carrier aggregation mode and non-carrier aggregation scheme, is working in carrier wave During aggregation scheme, at least one end in M roads the first radiofrequency signals end D1 of L × M switches 34 according to One the 3rd radio frequency of one end, combiner 33 in the secondary end D2 via L roads the second radiofrequency signals is believed Number end D3, the 4th radiofrequency signal end D4,1 × N switch 32 a 5th radiofrequency signal end D5, And be connected with the 6th radiofrequency signal end D6, and other ends in L roads the second radiofrequency signals end D2 M roads the first radiofrequency signal end D1 with L × M switches 34 is not connected;Working in non-carrier During aggregation scheme, at least one end in M roads the first radiofrequency signals end D1 of L × M switches 34 according to One end in the secondary end D2 via L roads the second radiofrequency signals, one the 5th of 1 × N switches 32 penetrate Frequency signal end D5 is connected with the 6th radiofrequency signal end D6, and in L roads the second radiofrequency signals end D2 Other ends not with L × M switch 34 M roads the first radiofrequency signal end D1 be connected.Wherein, Combiner 33, be used to be combined into the radiofrequency signal of two-way or multichannel different frequency range be sent to all the way antenna hair The radio-frequency devices penetrated, while influencing each other between also avoid each port signal;1 × N is opened Close, be used to realize handoff functionality.
It is the concrete structure schematic diagram of an implementation method of radio circuit of the present invention refering to Fig. 6.Its In, specifically include:One single pole multiple throw entering 35, two more two go out cross selection switches 34, One tri-frequency combiner, 33, SP3T switch 32 and an antenna 31.When first The radio circuit of implementation method is operated in B3, and (Band 3 is 1710MHz-1785MHz, in category Frequency range) and B7 (Band 7, is 2500MHz-2570MHz, belongs to high band) carrier aggregation mould When under formula, the corresponding high bands of B7 enter two to go out cross selection switches 34 by logic control more, Selection P2 paths herein are used as radiofrequency signal outgoing route;The corresponding Mid Frequencies of B3 enter two Go out cross selection switches 34 by logic control, selection P3 paths herein are defeated as radiofrequency signal Outbound path;SP3T switch 32 herein also can correspondingly select P6 paths herein as penetrating Frequency signal path output.Because the condition of work of carrier aggregation mode is usually in stronger base station net Set up under network signal, the third generation conjunction smaller to service impact so certain radio-frequency performance retracts Make also to be allowed in Partnership Program (3rd Generation Partnership Project, 3GPP) agreement.
When under the non-carrier aggregation scheme of B7, enter two more and go out cross selection switches 34 by logic Control, used as radiofrequency signal outgoing route, corresponding SP3T is opened in selection P1 paths herein Closing 32 can also select P1 paths as radio frequency outgoing route.Mode of operation under the conditions of this have compared with Low path Insertion Loss and preferable wireless performance, thereby may be ensured that penetrating using first embodiment Covering and experience performance of the equipment of frequency circuit in weak signal.
It is that the use L × M of an implementation method of radio circuit of the present invention is switched on side refering to Fig. 7 Radio frequency path Insertion Loss emulation comparison schematic diagram under road and under non-bypass, can be seen that by contrast After bypass functionality using multiway intersection selecting switch, whole radio circuit is in Mid Frequency and high band Insertion Loss it is relative reduce to 1.0dB or so, that is, show that the radio circuit is opened by using multiway intersection Close, i.e., the bypass functionality for being switched using L × M can be obviously reduced the Insertion Loss of radio-frequency channel, income Clearly.
It is another concrete structure schematic diagram of an implementation method of radio circuit of the present invention refering to Fig. 8. Wherein, it is with the concrete structure difference in Fig. 6:L × the M of Mid Frequency is switched and is changed Single pole multiple throw 45, and it is single-pole double-throw switch (SPDT) 42 that 1 × N switches are changed, in high band When under non-carrier aggregation scheme, enter two more and go out cross selection switches 44 by logic control, selection Used as radio frequency outgoing route, single-pole double-throw switch (SPDT) 45 correspondingly selects P1 paths as penetrating in P1 paths The outgoing route of frequency signal.
It is the another concrete structure schematic diagram of an implementation method of radio circuit of the present invention refering to Fig. 9. Wherein, it is with the concrete structure difference in Fig. 6 and Fig. 8:Low-frequency range, Mid Frequency and High band use enters two more and goes out cross selection switches 54, when radio circuit is operated in frequency range B5 (Band 10 is for (Band 5, is 824MHz-894MHz, belongs to low-frequency range) and B10 1710MHz-2170MHz, belong to Mid Frequency) carrier aggregation mode under when, B10 frequency ranges are corresponding Mid Frequency enter two to go out cross selection switches 54 by logic control more, select P3 paths vias; The corresponding low-frequency range of B5 frequency ranges enter two to go out cross selection switches 54 and select P5 by logic control more Path is used as radiofrequency signal outgoing route;It is combined by combiner 53 herein, hilted broadsword four Throw switch 52 also can correspondingly select P7 paths as radio frequency outgoing route.And work as radio circuit work Make when under the non-carrier aggregation scheme of B5 frequency ranges, LB frequency ranges enter two to go out selecting switch 54 more By logic control, selection P6 paths are used as radiofrequency signal outgoing route, the throw switch 52 of hilted broadsword four Also P6 paths can correspondingly be selected as radiofrequency signal outgoing route.
It is that the another concrete structure of an implementation method of radio circuit of the present invention is illustrated refering to Figure 10 Figure.Wherein, it is with the concrete structure difference in Fig. 6, Fig. 8 and Fig. 9:Using height Frequency range enters two to go out cross selection switches 64 more for 2200MHz-3800MHz, and goes out entering two more The input of cross selection switches 64 adds a HB2:2300MHz-2400MHz frequency ranges, (Band 30 is the B30 that 2300MHz-2400MHz frequency ranges correspond to herein 2305MHz-2315MHz) with B40 (Band 40 is 2300MHz-2400MHz) frequency range, Accordingly, when radio circuit is under B30 and B40 frequency range non-carrier aggregation schemes, high frequency herein Section enter two to go out cross selection switches 64 by logic control more, and selection P1 paths are believed as radio frequency Number outgoing route, SP3T switch 62 select the HB2 frequency ranges in corresponding P1 paths as antenna Output frequency range, realize to support B30 and B40 frequency ranges support.
It is that another concrete structure of an implementation method of radio circuit of the present invention is illustrated refering to Figure 11 Figure.Wherein, it is with the concrete structure difference in Fig. 6, Fig. 8, Fig. 9 and Figure 10: Using double-antenna structure, wherein, low-frequency range 692MHz-960MHz and high band 2300MHz-3800MHz shares a first antenna 71 by after the combining of dual-frequency channel merger 75, and Mid Frequency 1710MHz-2170MHz then uses the second antenna 72.It is many using the situation of double antenna Be it is unrestricted to the communication terminal size using radio circuit of the present invention, can be by use multiple antennas knot Structure is realizing more preferable communication experiences.
It is the principle schematic of another implementation method of radio circuit of the present invention refering to Figure 12.Wherein, Including at least one L × M switches 84, combiner 83 and 1 × N switches 82;L × M is opened Closing 84 one end includes M roads the first radiofrequency signal end D1, and the other end is believed including the radio frequency of L roads second Number end D2;The one end of combiner 83 includes at least two the 3rd radiofrequency signal end D3, and the other end is the Four radiofrequency signal end D4;1 × N switchs 82 one end includes at least two the 5th radiofrequency signal end D5, The other end is the 6th radiofrequency signal end D6;
Wherein, radio circuit at least selectively works in carrier aggregation mode and is polymerized with non-carrier mould Formula, when carrier aggregation mode is worked in, M roads the first radiofrequency signal end of L × M switches 84 At least one end in D1 is successively via one end, the combiner in L roads the second radiofrequency signals end D2 83 a 3rd radiofrequency signal end D3, the 4th radiofrequency signal end D4, one of 1 × N switches 5th radiofrequency signal end D5, and realize signal communication, and L roads second with the 6th radiofrequency signal D6 Other ends in the D2 of radiofrequency signal end do not switch 84 M roads the first radiofrequency signal end with L × M D1 realizes signal communication;
When non-carrier aggregation scheme is worked in, the radiofrequency signal of M roads first of L × M switches 84 At least one end in the D1 of end is sequentially via one end, the 1 × N in L roads the second radiofrequency signals end D2 One the 5th radiofrequency signal end D5 and the 6th radiofrequency signal end D6 of switch 82 realize signal communication, And other ends in L roads the second radiofrequency signals end D2 not with the M roads first of L × M switches 84 Radiofrequency signal end D1 realizes signal communication.Difference with first embodiment is, second The radio circuit of implementation method uses digital circuit, realizes control by signal communication and transmits.
Further, herein combiner 83 be pilot frequency combiner, including cavity resonator and go in ring Device, cavity resonator and the 3rd radiofrequency signal D3 ends couple, and circulator is believed with the 4th radio frequency respectively Number end D4 and cavity resonator coupling.Pilot frequency combiner is synthesized by by the signal of different frequency Signal all the way containing different frequency signals composition, so as to avoid the phase between each radiofrequency signal end Mutually influence.Additionally, combiner 83 is under carrier aggregation mode, first threshold is more than or equal to 300MHz.
It is the principle schematic of an implementation method of communication equipment of the present invention refering to Figure 13.Wherein, Including signal processor 91, rear end radio circuit 92, front radio-frequency circuit 93 and antenna 94, Front radio-frequency circuit 93 herein can be using the radio frequency electrical of foregoing any LTE carrier aggregation technology Road, the 6th radiofrequency signal end D6 of the 1 × N switches in front radio-frequency circuit is connected with antenna 94, Signal processor 91 is opened by rear end radio circuit 92 with the L × M in front radio-frequency circuit 93 M roads the first radiofrequency signal end D1 connections of pass.
Additionally, L × M the switches in each implementation method of the invention can go out cross selection and open to enter two more Close, or multiple-input, multiple-output cross selection switches;Combiner can be tri-frequency combiner, or many Frequency combiner;1 × N switches can be single-pole double-throw switch (SPDT), or single pole multiple throw.L×M Switch control can select to use mobile Industry Processor Interface (Mobile Industry Processor Interface, MIPI), or universal input/output interface (General Purpose Input Output, GPIO)。
In sum, the radio circuit of the LTE carrier aggregation technology that the present invention is provided includes:At least One L × M switches, combiner, 1 × N switches, the bypass functionality switched by L × M, In the case where carrier aggregation is polymerized both of which with non-carrier by optionally bypass and path, subtract significantly The small Insertion Loss of radio-frequency channel, it is ensured that using the communication terminal of this radio circuit in weak signal Performance for wireless communications, improves Consumer's Experience;Secondly, radiofrequency signal need to only be carried out via an antenna Signal transmitting and receiving, reduces required bulk, meets more lightening manufacture demand;Again, The bypass functionality of L × M switches, makes the selection interval of frequency range more rich, can be according to actual conditions Required band matching circuit is neatly added, the application requirement of many scenes is realized.This programme Radio circuit is applied to the mobile terminal design of the communication standards such as 2G, 3G, 4G, product form Be applicable but be not limited to mobile phone, card of surfing Internet, portable computer, WLAN (Wireless Fidelity, WiFi) signalling arrangement, data card etc..
Embodiments of the present invention are the foregoing is only, patent model of the invention is not thereby limited Enclose, the equivalent structure or equivalent process that every utilization description of the invention and accompanying drawing content are made become Change, or be directly or indirectly used in other related technical fields, be similarly included in of the invention In scope of patent protection.

Claims (10)

1. a kind of radio circuit of LTE carrier aggregation technology, it is characterised in that:
Including at least one L × M switches, combiner and 1 × N switches;
L × the M switchs one end includes M roads the first radiofrequency signal end, and the other end includes L roads second Radiofrequency signal end;
Described combiner one end includes at least two the 3rd radiofrequency signal ends, and the other end is the 4th radio frequency Signal end;
1 × the N switchs one end includes at least two the 5th radiofrequency signal ends, and the other end is the 6th Radiofrequency signal end;
Wherein, the L, M, N are more than or equal to two, in the second radiofrequency signal of L roads end One end connect a 3rd radiofrequency signal end of the combiner, the radio frequency of L roads second The other end in signal end connects a 5th radiofrequency signal end of 1 × N switches, institute State combiner the 4th radiofrequency signal end connect 1 × N switch another the described 5th Radiofrequency signal end, the 6th radiofrequency signal end of 1 × N switches is used to connect antenna;
The radio circuit at least selectively works in carrier aggregation mode and non-carrier aggregation scheme, When the carrier aggregation mode is worked in, the radio frequency of M roads first letter of L × M switches Number end at least one end successively via one end, the conjunction in the second radiofrequency signal of L roads end One the 3rd radiofrequency signal end, the 4th radiofrequency signal end, the 1 × N of road device are opened The 5th radiofrequency signal end closed, and be connected with the 6th radiofrequency signal end, and it is described The M roads first that other ends in the second radiofrequency signal end of L roads do not switch with the L × M are penetrated Frequency signal end is connected;
When the non-carrier aggregation scheme is worked in, the M roads first of L × M switches At least one end in radiofrequency signal end successively via the one end in the second radiofrequency signal of L roads end, One the 5th radiofrequency signal end of 1 × N switches connects with the 6th radiofrequency signal end Connect, and other ends in the second radiofrequency signal of L roads end are not described with what the L × M was switched M roads the first radiofrequency signal end connects.
2. radio circuit as claimed in claim 1, it is characterised in that:
The frequency of the radiofrequency signal between described at least two the 3rd radiofrequency signal ends of the combiner Rate interval is not less than first threshold, and the radio circuit works in the non-carrier aggregation scheme When, at least portion of the radiofrequency signal that the 5th radiofrequency signal end that the 1 × N is switched is passed through Crossover rate is located in the frequency interval corresponding to the first threshold, wherein the first threshold is by institute The separation number for stating combiner is defined.
3. radio circuit as claimed in claim 2, it is characterised in that:
The combiner includes three the 3rd radiofrequency signal ends, and its corresponding frequency range is respectively: Low-frequency range Low Band LB:698MHz-960MHz, Mid Frequency Mid Band MB: 1710MHz-2170MHz and high band High Band HB:2300MHz-2690MHz.
4. radio circuit as described in claim 1, it is characterised in that:
L × M switches go out cross selection switches more to enter two.
5. radio circuit as described in claim 1, it is characterised in that:
1 × N switches are SP3T switch.
6. a kind of radio circuit of LTE carrier aggregation technology, it is characterised in that:
Including at least one L × M switches, combiner and 1 × N switches;
L × the M switchs one end includes M roads the first radiofrequency signal end, and the other end includes L roads Second radiofrequency signal end;
Described combiner one end includes at least two the 3rd radiofrequency signal ends, and the other end is the 4th radio frequency Signal end;
1 × the N switchs one end includes at least two the 5th radiofrequency signal ends, and the other end is the 6th Radiofrequency signal end;
Wherein, the radio circuit at least selectively works in carrier aggregation mode and gathers with non-carrier Syntype, when the carrier aggregation mode is worked in, the M roads of L × M switch the At least one end in one radiofrequency signal end is successively via in the second radiofrequency signal of L roads end End, the 3rd radiofrequency signal end, the 4th radiofrequency signal end, an institute of the combiner A the 5th radiofrequency signal end of 1 × N switches is stated, and is realized with the 6th radiofrequency signal Other ends in signal communication, and the second radiofrequency signal of L roads end do not switch with the L × M The first radiofrequency signal of M roads end realize signal communication;
When the non-carrier aggregation scheme is worked in, the M roads of L × M switch the At least one end in one radiofrequency signal end is sequentially via in the second radiofrequency signal of L roads end End, the 5th radiofrequency signal end and the 6th radiofrequency signal end of 1 × N switches Realize other ends in signal communication, and the second radiofrequency signal of L roads end not with the L × M Realize signal communication in the first radiofrequency signal of M roads end of switch.
7. the radio circuit as described in claim 6, it is characterised in that:
The combiner is pilot frequency combiner, including cavity resonator and circulator, the cavity are humorous The device that shakes is coupled with the 3rd radiofrequency signal end, the circulator respectively with the 4th radiofrequency signal End and cavity resonator coupling.
8. the radio circuit as described in claim 6, it is characterised in that:
Correspondence carrier aggregation mode, the first threshold is more than or equal to 300MHz.
9. the radio circuit as described in claim 6, it is characterised in that:
The control interface of L × M switches is to move Industry Processor Interface Mobile Industry Processor Interface MIPI, or universal input/output interface General Purpose Input Output GPIO。
10. a kind of communication equipment, it is characterised in that:
Including signal processor, rear end radio circuit, front radio-frequency circuit and antenna, it is described before End-fire frequency circuit is any one radio circuit as described in claim 1 to 9, the front radio-frequency 6th radiofrequency signal end of the 1 × N switches in circuit is connected with the antenna, the signal Processor is switched by the rear end radio circuit with the L × M in the front radio-frequency circuit M roads the first radiofrequency signal end connection.
CN201510785389.XA 2015-11-13 2015-11-13 Radio frequency circuit of LTE carrier aggregation technology and communication equipment thereof Active CN106712795B (en)

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CN107181497A (en) * 2017-06-30 2017-09-19 广东欧珀移动通信有限公司 Radio circuit, antenna assembly and electronic equipment
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CN108449093A (en) * 2018-02-24 2018-08-24 广东美晨通讯有限公司 A kind of RF front-end circuit of terminal device and switchable radio frequency access
CN108923816A (en) * 2018-05-28 2018-11-30 Oppo广东移动通信有限公司 Mobile terminal and its combiner device, combiner device by-path turn-on implementation method
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CN107171675B (en) * 2017-06-19 2020-10-09 Oppo广东移动通信有限公司 Radio frequency circuit switch chip, radio frequency circuit, antenna device and electronic equipment
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CN107171674B (en) * 2017-06-19 2020-06-16 Oppo广东移动通信有限公司 Radio frequency circuit switch chip, radio frequency circuit, antenna device and electronic equipment
CN107302373B (en) * 2017-06-19 2020-06-02 Oppo广东移动通信有限公司 Radio frequency circuit switch chip, radio frequency circuit, antenna device and electronic equipment
CN107196668B (en) * 2017-06-19 2020-11-13 Oppo广东移动通信有限公司 Radio frequency circuit switch chip, radio frequency circuit, antenna device and electronic equipment
CN110785940A (en) * 2017-06-28 2020-02-11 株式会社村田制作所 Switch module
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CN108183714A (en) * 2018-01-17 2018-06-19 深圳天珑无线科技有限公司 A kind of radio-frequency unit and communication equipment
CN108449093A (en) * 2018-02-24 2018-08-24 广东美晨通讯有限公司 A kind of RF front-end circuit of terminal device and switchable radio frequency access
WO2019174235A1 (en) * 2018-03-16 2019-09-19 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
US10727877B2 (en) 2018-03-16 2020-07-28 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
US10454508B2 (en) 2018-03-16 2019-10-22 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
US10560130B2 (en) 2018-03-16 2020-02-11 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
WO2019174232A1 (en) * 2018-03-16 2019-09-19 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
US10567027B2 (en) 2018-03-16 2020-02-18 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
US10567028B2 (en) 2018-03-16 2020-02-18 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiway switch, radio frequency system, and wireless communication device
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CN110518931A (en) * 2019-07-25 2019-11-29 维沃移动通信有限公司 A kind of switching molding group, radio-frequency unit and terminal device

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