CN102420625A - Matching circuit, matching circuit network and signal transmit-receive device - Google Patents
Matching circuit, matching circuit network and signal transmit-receive device Download PDFInfo
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- CN102420625A CN102420625A CN2011103765478A CN201110376547A CN102420625A CN 102420625 A CN102420625 A CN 102420625A CN 2011103765478 A CN2011103765478 A CN 2011103765478A CN 201110376547 A CN201110376547 A CN 201110376547A CN 102420625 A CN102420625 A CN 102420625A
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- 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
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- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
Abstract
The invention discloses a matching circuit, which comprises an isolating module, a filtering module and a matching module. The filtering module is connected between the isolating module and the matching module; the isolating module is used for isolating signals outside an assigned frequency and sending signals at the assigned frequency; the filtering module is used for filtering away the signals outside the assigned frequency; and the matching module is used for matching the signals at the assigned frequency. Correspondingly, the invention also discloses a matching circuit network and a signal transmit-receive device. The matching circuit, the matching circuit network and the signal transmit-receive device disclosed by the invention not only reduces complexity of the signal transmit-receive device, decreases cost and saves hardware resources, but also solves a problem that multiple paths of signals cannot be received at the same time in the case of using antenna switches and the like in the prior art and improves signal receiving efficiency.
Description
Technical field
The present invention relates to the signal reception technique, relate in particular to a kind of match circuit, match circuit network and signal receiving/transmission device.
Background technology
Multiband aerial is very common in Antenna Design.Usually show as, an Antenna Design is gone out different minor matters, thereby the multiband of realizing single antenna receives.Yet under the ever-increasing situation of antenna amount on the mobile phone, multi-antenna technology will cause a large amount of area consumptions.In fact, along with the development of antenna match technology, same antenna also is the reception demand that can satisfy different frequency range in match parameter not simultaneously.Therefore, a single-band antenna cooperates the different antennas matching scheme, can realize that just the multiband of antenna receives.
At present, prior art is through using duplexer to switch to different match circuits, realizing that the multiband of single antenna receives.Signal receiving/transmission device when shown in Figure 1 is the reception of prior art single-band antenna realization double frequency; Comprise duplexer, low frequency transmission branch road 1 and high frequency in this signal receiving/transmission device and transmitted branch road 2; Wherein, Low frequency transmits in the branch road 1 and comprises match circuit 1, low noise amplifier, match circuit 2 and transmission circuit 1, and high frequency transmits in the branch road 2 and comprises match circuit 2, filter, match circuit 4 and transmission circuit 2, wherein; The circuit structure of match circuit 1 is as shown in Figure 2, is made up of series inductance and shunt capacitance.The circuit structure of match circuit 2 is as shown in Figure 3, is made up of series capacitance and shunt inductance.In the above-mentioned signal receiving/transmission device, utilize duplexer on the different received branch road, to switch, realize the switching of receive path, reach and utilize same single-band antenna to carry out the purpose that multiband receives.
Above-mentioned signal receiving/transmission device comprises duplexer, and is corresponding, at the equipment that uses said signal receiving/transmission device (like notebook computer, portable flat panel computer; Hand held mobile phone; The media player of band radio function etc.) in, also need correspondingly increase circuit and Logic control module, so to duplexer; Just increased the complexity of whole signal receiving/transmission device, and to the implementation procedure of single antenna multiband transmitting-receiving.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of match circuit, match circuit network and signal receiving/transmission device, to solve the existing high problem of signal receiving/transmission device complexity.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of match circuit, said match circuit comprises: isolation module, filtration module and matching module, said filtration module are connected between said isolation module and the matching module; Wherein, Isolation module is used to isolate the signal beyond the assigned frequency, transmits the signal of assigned frequency; Filtration module is used to filter out the signal beyond the said assigned frequency; Matching module is used for the signal of said assigned frequency is carried out matching treatment.
The present invention also provides a kind of match circuit network, and said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road, wherein,
Said high frequency transmits branch road and comprises one or two high frequency match circuit; Said high frequency match circuit comprises: first isolation module, first filtration module and first matching module; Said first filtration module is connected between said first isolation module and said first matching module, wherein, and first isolation module; Be used to isolate low frequency signal, transmit high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment;
Said low frequency transmits branch road and comprises one or two low frequency match circuit; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
In such scheme, said first isolation module comprises first electric capacity, and said first filtration module comprises first series resonant tank, and said first matching module comprises said the 3rd electric capacity and the 3rd inductance;
Said the 3rd electric capacity is connected with the 3rd inductance; And said the 3rd inductance ground connection; Said first series resonant tank, one end ground connection; One end of said first electric capacity connects the other end of said first series resonant tank and an end of the 3rd electric capacity respectively, and the other end is as an end of said high frequency match circuit, and the tie point between said the 3rd electric capacity and the 3rd inductance is as the other end of said high frequency match circuit.
In such scheme, said first isolation module also comprises first inductance, and said first inductance is parallelly connected with said first electric capacity;
Wherein, Satisfy formula between said first inductance and first electric capacity:
wherein L representes the inductance value of first inductance; C representes the capacitance of first electric capacity; F representes that the appointment of said high-frequency signal suppresses the centre frequency of frequency range, is lower than the band connection frequency of said first isolation module.
In such scheme; Said first series resonant tank comprises second inductance and second electric capacity that is connected in series; Wherein, Satisfy formula between said second inductance and second electric capacity:
wherein L representes the inductance value of second inductance; C representes the capacitance of second electric capacity, and F representes that the appointment of said high-frequency signal suppresses the centre frequency of frequency range, is lower than the band connection frequency of said first isolation module.
In such scheme, said second isolation module comprises the 4th inductance, and second filtration module comprises series resonant tank, and second matching module comprises said the 6th inductance and the 5th electric capacity;
Said the 6th inductance and the 5th capacitances in series; And said the 5th capacity earth; Said second series resonant tank, one end ground connection; One end of said the 4th inductance connects the other end of said second series resonant tank and an end of said the 6th inductance respectively, and the other end is as an end of said low frequency match circuit, and the tie point between said the 6th inductance and the 5th electric capacity is as the other end of said low frequency match circuit.
In such scheme; Said second series resonant tank comprises the 5th inductance and the 4th electric capacity that is connected in series; Wherein, Satisfy formula between said the 5th inductance and the 4th electric capacity:
wherein L representes the inductance value of the 5th inductance; C representes the capacitance of the 4th electric capacity, and F representes that the appointment of said low frequency signal suppresses the centre frequency of frequency range, is higher than the band connection frequency of said second isolation module.
In such scheme, when said high frequency transfer circuit comprises two high frequency match circuits, be connected in series between first matching module of said two high frequency match circuits; When said low frequency transfer circuit comprises two low frequency match circuits, be connected in series between second matching module of said two low frequency match circuits.
In such scheme, said low frequency transmits branch road and also comprises: low noise amplifier, said low noise amplifier are connected on second matching module of a said low frequency match circuit, between second matching module of perhaps said two low frequency match circuits.
In such scheme, said low noise amplifier is worked when needs receive low frequency signal, in the time need not receiving low frequency signal, does not work.
In such scheme, said high frequency transmits branch road and also comprises: filter, said filter are connected on first matching module of a said high frequency match circuit, between first matching module of perhaps said two high frequency match circuits.
The present invention also provides a kind of signal receiving/transmission device; Said signal receiving/transmission device comprises: antenna, match circuit network, first transmission circuit and second transmission circuit; Wherein, Said match circuit network transmits low frequency signal between the said antenna and first transmission circuit, high-frequency signal is transmitted between the said antenna and second transmission circuit;
Said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein,
Said high frequency transmits branch road and comprises a high frequency match circuit; Said high frequency match circuit comprises: first isolation module, first filtration module and first matching module; Said first filtration module is connected between said first isolation module and said first matching module, wherein, and first isolation module; Be used to isolate low frequency signal, transmit high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment;
Said low frequency transmits branch road and comprises a low frequency match circuit; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
The present invention also provides a kind of signal receiving/transmission device; Said signal receiving/transmission device comprises: antenna, at least one match circuit network, transmission circuit; Wherein, Said at least one match circuit network is divided into high-frequency signal and low frequency signal with the signal of a plurality of frequencies, and between said antenna and transmission circuit, transmits respectively;
Said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein,
Said high frequency transmits branch road and comprises two high frequency match circuits that are connected in series; Said high frequency match circuit comprises: first isolation module, first filtration module and first matching module; Said first filtration module is connected between said first isolation module and said first matching module, wherein, and first isolation module; Be used to isolate low frequency signal, transmit high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment;
Said low frequency transmits branch road and comprises two low frequency match circuits that are connected in series; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
In such scheme, a said match circuit network is used for the signal of two frequencies is divided into high-frequency signal or low frequency signal; And, between said antenna and transmission circuit, transmit respectively, perhaps transmit branch road or low frequency and transmit on the branch road and transmit at high frequencies that self connected, in other said match circuit networks.
Match circuit provided by the invention, match circuit network and signal receiving/transmission device are used to isolate assigned frequency with the isolation module of external signal and be used to filter out the filtration module of assigned frequency with external signal through in match circuit, increasing, and make match circuit self possess the function of isolation signals; So, make and need not use duplexer in the corresponding signal receiving/transmission device, just can reach same single-band antenna and carry out the purpose that multiband receives; Not only can reduce the complexity of signal receiving/transmission device; Reduce cost, save hardware resource, and owing to need not carry out the respective switch switching flow of duplexer in the signal receiving course; Thereby solved in the prior art; Use under the situation of duplexer etc., multiple signals can not be realized the problem that receives simultaneously, and have improved signal receiving efficiency.
Description of drawings
Fig. 1 is the composition structural representation of signal receiving/transmission device in the prior art;
Fig. 2 is the composition structural representation that signal receiving/transmission device medium and low frequency shown in Figure 1 transmits branch road;
Fig. 3 is the composition structural representation that signal receiving/transmission device medium-high frequency shown in Figure 1 transmits branch road;
Fig. 4 is the composition structural representation of a kind of match circuit of the present invention;
Fig. 5 is a kind of electrical block diagram of match circuit network medium-high frequency match circuit of the present invention;
Fig. 6 is the another kind of electrical block diagram of match circuit network medium-high frequency match circuit of the present invention;
Fig. 7 is a kind of electrical block diagram of match circuit network medium and low frequency match circuit of the present invention;
Fig. 8 is the composition structural representation of a kind of signal receiving/transmission device in the embodiment of the invention one;
Fig. 9 is the composition structural representation of another kind of signal receiving/transmission device in the embodiment of the invention one;
Figure 10 is the composition structural representation of a kind of signal receiving/transmission device in the embodiment of the invention two;
Figure 11 is the composition structural representation of another kind of signal receiving/transmission device in the embodiment of the invention two;
Figure 12 is the composition structural representation of signal receiving/transmission device in the embodiment of the invention three;
Figure 13 is for using the part WCDMA system configuration sketch map of signal receiving/transmission device of the present invention.
Embodiment
Basic thought of the present invention is: the match circuit through to antenna improves; Make its match circuit have the function of isolating high-frequency signal or low frequency signal,, can directly high-frequency signal be isolated out for the match circuit that is used to mate low frequency signal; Only low frequency signal is transferred to transmission circuit; For the match circuit that is used to mate high-frequency signal, then can directly low frequency signal be isolated out, only high-frequency signal transmission is arrived transmission circuit.So, need not use duplexer in the signal receiving/transmission device, just can realize the multiband transmitting-receiving of single antenna, thereby under the prerequisite that guarantees the signal receiving/transmission device operate as normal, reduce the complexity of signal receiving/transmission device.
A kind of match circuit of the present invention; As shown in Figure 4, said match circuit comprises: isolation module, filtration module and matching module, said filtering module are connected between said isolation module and the matching module; Wherein, Isolation module is used to isolate the signal beyond the assigned frequency, transmits the signal of assigned frequency; Filtration module is used to filter out the signal beyond the said assigned frequency, to strengthen match circuit to the isolation effect of assigned frequency with external signal; Matching module is used for the signal of said assigned frequency is carried out matching treatment.
Here, the signal of said assigned frequency can be the high-frequency signal of specifying frequency, the perhaps low frequency signal of assigned frequency.Here, said high-frequency signal and low frequency signal are relative notions, and for the signal of two kinds of different frequency ranges of need transmitting-receivings, the signal of high band is said high-frequency signal, and the signal of low-frequency range then is said low frequency signal.For example; For WCDMA (WCDMA; The W850 frequency band signals and the W2100 frequency band signals that Wideband Code Division Multiple Access) need receive in the system, the W850 frequency band signals then is above-mentioned low frequency signal, the W2100 frequency band signals then is above-mentioned high-frequency signal.
In addition, the present invention also provides a kind of match circuit network, and said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein, Said high frequency transmits branch road and comprises one or two high frequency match circuit, and said high frequency match circuit comprises: first isolation module, first filtration module and first matching module, said first filtration module are connected between said first isolation module and said first matching module; Wherein, First isolation module is used to isolate low frequency signal, transmits high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment; Said low frequency transmits branch road and comprises one or two low frequency match circuit; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
Said first isolation module comprises first electric capacity, and said first filtration module comprises first series resonant tank, and said first matching module comprises said the 3rd electric capacity and the 3rd inductance; Said the 3rd electric capacity is connected with the 3rd inductance; And said the 3rd inductance ground connection; Said first series resonant tank, one end ground connection; One end of said first electric capacity connects the other end of said first series resonant tank and an end of the 3rd electric capacity respectively, and the other end is as a signal transmission end of said high frequency match circuit, and the tie point between said the 3rd electric capacity and the 3rd inductance is as another signal transmission end of said high frequency match circuit.Said first series resonant tank comprises an inductance and electric capacity that is connected in series.
Particularly, two kinds of circuit structures that said high frequency match circuit can be following:
First kind, as shown in Figure 5, comprising: first capacitor C 1, second inductance L 2, second capacitor C 2, the 3rd capacitor C 3 and the 3rd inductance L 3; Wherein, Second inductance L 2 is connected with second capacitor C 2, and said second capacitor C, 2 ground connection, and said the 3rd capacitor C 3 is connected with the 3rd inductance L 3; And said the 3rd inductance L 3 ground connection; One end of said first capacitor C 1 is as an end of the said first high frequency match circuit, and the other end connects said second inductance L 2 and the 3rd capacitor C 3 respectively, and the tie point between said the 3rd capacitor C 3 and the 3rd inductance L 3 is as the other end of the said first high frequency match circuit.Wherein, first isolation module comprises that said first capacitor C, 1, the first filtration module comprises that said second inductance L 2 and second capacitor C, 2, the first matching modules comprise said the 3rd capacitor C 3 and the 3rd inductance L 3.
Second kind; As shown in Figure 6, comprising: first inductance L 1, first capacitor C 1, second inductance L 2, second capacitor C 2, the 3rd capacitor C 3 and the 3rd inductance L 3, wherein; Second inductance L 2 is connected with second capacitor C 2; And said second capacitor C, 2 ground connection, said the 3rd capacitor C 3 is connected with the 3rd inductance L 3, and said the 3rd inductance L 3 ground connection; Said first inductance L 1 is parallelly connected with said first capacitor C 1; One end of said first capacitor C 1 is as an end of the said first high frequency match circuit, and the other end connects said second inductance L 2 and the 3rd capacitor C 3 respectively, and the tie point between said the 3rd capacitor C 3 and the 3rd inductance L 3 is as the other end of the said first high frequency match circuit.Wherein, first isolation module comprises that said first inductance L 1 and first capacitor C, 1, the first filtration module comprise that said second inductance L 2 and second capacitor C, 2, the first matching modules comprise said the 3rd capacitor C 3 and the 3rd inductance L 3.
Wherein, said second isolation module comprises the 4th inductance, and second filtration module comprises series resonant tank, and second matching module comprises said the 6th inductance and the 5th electric capacity; Said the 6th inductance and the 5th capacitances in series; And said the 5th capacity earth; Said second series resonant tank, one end ground connection; One end of said the 4th inductance connects the other end of said second series resonant tank and an end of said the 6th inductance respectively, and the other end is as an end of said low frequency match circuit, and the tie point between said the 6th inductance and the 5th electric capacity is as the other end of said low frequency match circuit.
Particularly, the circuit structure of said low frequency match circuit is as shown in Figure 7, comprising: the 4th inductance L 4, the 5th inductance L 5, the 4th capacitor C 4, the 6th inductance L 6, the 5th capacitor C 5; Wherein, Said the 5th inductance L 5 is connected with the 4th capacitor C 4, and said second capacitor C, 4 ground connection, and said the 6th inductance L 6 is connected with the 5th capacitor C 5; And said the 5th capacitor C 5 ground connection; One end of said the 4th inductance L 4 is as an end of the said first low frequency match circuit, and the other end connects said the 5th inductance L 5 and the 6th inductance L 6 respectively, and the tie point between said the 6th inductance L 6 and the 5th capacitor C 5 is as the other end of the said first low frequency match circuit.Wherein, second isolation module comprises that said the 4th inductance L 4, the second filtration modules comprise that said the 5th inductance L 5 and the 4th capacitor C 4, the second matching modules comprise said the 6th inductance L 6 and the 5th capacitor C 5.
Wherein, first capacitor C 1 is to be used for isolating the work that makes it not influence high band than the signal of low-frequency range, and reduces the influence of the 5th inductance L 5 and 4 pairs second inductance L 2 of the 4th capacitor C and second capacitor C 2; The 4th inductance L 4 is that the signal that is used for isolating higher frequency band makes it not influence the work of low-frequency range, and reduces the influence of second inductance L 2 and 2 pairs the 5th inductance L 5 of second capacitor C and the 4th capacitor C 4; The 3rd capacitor C 3 and the 3rd inductance L 3, the 5th capacitor C 5 and the 6th inductance L 6 are mainly used in realization tuning to signal, promptly carry out matching treatment; Second inductance L 2 and second capacitor C 2 are used for the filters low segment signal, constitute high pass filter with first capacitor C 1; The 5th inductance L 5 and the 4th capacitor C 4 are used for the filtering high frequency band signal, constitute low pass filter with the 4th inductance L 4.
Wherein, Between first inductance L 1 and first capacitor C 1, between second inductance L 2 and second capacitor C 2 and all satisfy formula between the 5th inductance L 5 and the 4th capacitor C 4:
wherein L representes the inductance value of corresponding inductance; C representes the capacitance of corresponding capacitance, and F representes that the appointment of corresponding signal suppresses the centre frequency of frequency range.Particularly, for first inductance L 1 and first capacitor C 1 and second inductance L 2 and second capacitor C 2,, F representes that the appointment of said high-frequency signal suppresses the centre frequency of frequency range, is lower than the band connection frequency of said first isolation module.For the 5th inductance L 5 and the 4th capacitor C 4, F is the centre frequency that the appointment of said low frequency signal suppresses frequency range, is higher than the band connection frequency of said second isolation module.
In the practical application, for high frequency match circuit shown in Figure 6, owing to increased by first inductance L 1, thereby have more high performance isolation effect compared to first kind of high frequency match circuit, and can make that also the low frequency bandwidth narrows down.Therefore, second kind of high frequency match circuit is applicable to the situation that the low frequency bandwidth is narrow slightly, for example, can be that the low frequency relative bandwidth is in the situation below 40%.
Wherein, when said high frequency transfer circuit comprises two high frequency match circuits, be connected in series between first matching module of said two high frequency match circuits; When said low frequency transfer circuit comprises two low frequency match circuits, be connected in series between second matching module of said two low frequency match circuits.
Here, said low frequency transmission branch road can also comprise: low noise amplifier, said low noise amplifier are connected on second matching module of a said low frequency match circuit, between second matching module of perhaps said two low frequency match circuits.Said low noise amplifier is worked when needs receive low frequency signal, in the time need not receiving low frequency signal, does not work.
Here, said high frequency transmission branch road can also comprise: filter, said filter are connected on first matching module of a said high frequency match circuit, between first matching module of perhaps said two high frequency match circuits.
For example, for the application of simulated television, receive frequency range greater than the signal of 160MHz and frequency range during less than the signal of 120MHz, two high frequency match circuits that high frequency transmits on the branch road all adopt circuit structure shown in Figure 5; Two low frequency match circuits that low frequency transmits on the branch road all adopt circuit structure shown in Figure 7, and then, its concrete parameter can be: C1=22pF, C2=56pF; C3=22pF, C4=27pF, the concrete parameter of C5 can be adjusted by concrete condition, and C5 is a vacancy in this example; L2=56nH, the concrete parameter of L3 can be adjusted by concrete condition, and L3 is a vacancy in this example; L4=68nH, L5=22nH, L6=68nH.
In addition; The present invention also provides a kind of signal receiving/transmission device; Said signal receiving/transmission device comprises: antenna, match circuit network, first transmission circuit and second transmission circuit; Wherein, said match circuit network transmits low frequency signal between the said antenna and first transmission circuit, and high-frequency signal is transmitted between the said antenna and second transmission circuit;
Said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein, Said high frequency transmits branch road and comprises a high frequency match circuit, and said high frequency match circuit comprises: first isolation module, first filtration module and first matching module, said first filtration module are connected between said first isolation module and said first matching module; Wherein, First isolation module is used to isolate low frequency signal, transmits high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment; Said low frequency transmits branch road and comprises a low frequency match circuit; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
The present invention also provides another kind of signal receiving/transmission device; Said signal receiving/transmission device comprises: antenna, at least one match circuit network, transmission circuit; Wherein, Said at least one match circuit network is divided into high-frequency signal and low frequency signal with the signal of a plurality of frequencies, and between said antenna and transmission circuit, transmits respectively;
Said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein, Said high frequency transmits branch road and comprises two high frequency match circuits that are connected in series, and said high frequency match circuit comprises: first isolation module, first filtration module and first matching module, said first filtration module are connected between said first isolation module and said first matching module; Wherein, First isolation module is used to isolate low frequency signal, transmits high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment; Said low frequency transmits branch road and comprises two low frequency match circuits that are connected in series; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
Wherein, a said match circuit network is used for the signal of two frequencies is divided into high-frequency signal or low frequency signal; And, between said antenna and transmission circuit, transmit respectively, perhaps transmit on the branch road and transmit at high-frequency transmission branch roads that self connected, in other said match circuit networks or low frequency.
Embodiment one
Signal receiving/transmission device in the present embodiment is as shown in Figure 8; Mainly comprise: antenna, high frequency transmit branch road, low frequency transmits branch road, first transmission circuit and second transmission circuit; Wherein, High frequency transmits branch road and low frequency transmission branch road is connected in parallel between said antenna and first transmission circuit and second transmission circuit; Said high frequency transmits the input of branch road and the input of low frequency transmission branch road connects said antenna, and the output that said high frequency transmits branch road connects said second transmission circuit, and the output that low frequency transmits branch road connects said first transmission circuit.
Wherein, high frequency transmits branch road and comprises the first high frequency match circuit, and low frequency transmits branch road and comprises the first low frequency match circuit.Said second transmission circuit is used to receive and dispatch the high-frequency signal that transmits the branch road transmission via said high frequency, and said first transmission circuit is used to receive and dispatch the low frequency signal that transmits the branch road transmission via said low frequency.
Here; Said first high frequency match circuit and above-mentioned high frequency match circuit structure are identical; Wherein, the first high frequency match circuit with the input of said first isolation module as self input, with the output of said first matching module output as self.
Said first low frequency match circuit and above-mentioned low frequency match circuit structure are identical, wherein, the first low frequency match circuit with the input of said second isolation module as self input, with the output of said second matching module output as self.
In the signal receiving/transmission device in the present embodiment; Can also transmit at low frequency and increase low noise amplifier in the branch road; Can also transmit branch road at high frequency increases filter, and it is as shown in Figure 9 to increase low noise amplifier and filter signal receiving/transmission device afterwards, wherein; The input of low noise amplifier connects the output of the first low frequency match circuit; Output connects the input of first transmission circuit, and said low noise amplifier is worked when needs receive low frequency signal, in the time need not receiving low frequency signal, does not work.Particularly, said low noise amplifier is controlled by baseband chip, when this baseband chip receives low frequency signal at needs, is said low noise amplifier energized, makes said low noise amplifier work; This baseband chip is said low noise amplifier powered-down in the time need not receiving low frequency signal, make said low noise amplifier not work.So,, can strengthen low frequency and transmit the isolation of branch road, make high frequency reception and low frequency reception can work the time-division unaffected high-frequency signal through the opening and closing of low noise amplifier.
If the high frequency match circuit is not good to the isolation effect of low frequency; When perhaps needing better isolation effect; Can also transmit at high frequency and increase filter on the branch road; The input of said filter is connected the output of the said first high frequency match circuit, and output is connected the input of said second transmission circuit, is used for filtering interference signals and prevents that self-oscillation from appearring in low noise amplifier.And, through increasing filter, can strengthen high frequency and transmit the isolation of branch road low frequency signal, it is unaffected to make high frequency reception and low frequency reception to work the time-division, when working at the same time, can reduce influence each other.
Particularly, when antenna receives the signal of telecommunication of low frequency, low noise amplifier work, the signal of telecommunication transmits branch road via low frequency and arrives first transmission circuit.When antenna received the signal of telecommunication of high frequency, low noise amplifier was not worked, and the signal of telecommunication transmits branch road via high frequency and arrives second transmission circuit.
In the present embodiment; Increase low noise amplifier on the branch road and on high frequency transmission branch road, increase filter through transmitting at low frequency; Can be so that when receiving high-frequency signal, and the isolation between the low frequency signal is greater than 20dB, can reach fully duplexer the performance that can reach.
Present embodiment is applied to the situation of double-receiver.
Embodiment two
Signal receiving/transmission device in the present embodiment is shown in figure 10; Mainly comprise: antenna, high frequency transmit branch road, low frequency transmits branch road and transmission circuit; Wherein, High frequency transmits branch road and low frequency transmission branch road is connected in parallel between said antenna and the said transmission circuit, and said high frequency transmits the input of branch road and the input of low frequency transmission branch road connects said antenna, and output connects said transmission circuit.High frequency transmits branch road and comprises the first high frequency match circuit and the second high frequency match circuit, and low frequency transmits branch road and comprises the first low frequency match circuit and the second low frequency match circuit, and transmission circuit is used to receive high-frequency signal and low frequency signal.
Wherein, the first high frequency match circuit is connected with the second high frequency match circuit, and the first high frequency match circuit connects said antenna, and the second high frequency match circuit connects said transmission circuit; The first low frequency match circuit is connected with the second low frequency match circuit, and the first low frequency match circuit connects said antenna, and the second low frequency match circuit connects said transmission circuit.
Here; The composition structure of the said first high frequency match circuit and the second high frequency match circuit; Identical with the high frequency match circuit structure described in the preceding text, repeat no more, wherein; The first high frequency match circuit with the input of said first isolation module as self input; With the output of said first matching module output as self, the second high frequency match circuit with the input of said first matching module as self input, with the output of said first isolation module output as self.
The composition structure of the said first low frequency match circuit and the second low frequency match circuit; Identical with the high frequency match circuit structure described in the preceding text; Repeat no more; Wherein, the first low frequency match circuit with the input of said second isolation module as self input, with the output of said second matching module output as self; The second low frequency match circuit with the input of said second matching module as self input, with the output of said second isolation module output as self.
In like manner, the signal receiving/transmission device in the present embodiment also can transmit at low frequency increases low noise amplifier in the branch road, and transmitting branch road at high frequency increases filter, and it is shown in figure 11 to increase low noise amplifier and filter signal receiving/transmission device afterwards.Said low noise amplifier is connected between the first low frequency match circuit and the second low frequency match circuit, and said filter is connected between the first high frequency match circuit and the second high frequency match circuit.Particularly, the input of said filter connects the said first high frequency match circuit, and output connects the said second high frequency match circuit.The input of said low noise amplifier connects the said first low frequency match circuit, and output connects the said second low frequency match circuit.
Wherein, said low noise amplifier is worked when needs receive low frequency signal, in the time need not receiving low frequency signal, does not work, and concrete implementation procedure is identical with embodiment one, repeats no more.
Embodiment three
In the practical application; Can also the high frequency transmission branch road and the low frequency transmission branch road of signal receiving/transmission device described in the embodiment two be segmented respectively again; The signal that receives of antenna is mated transmission through four branch roads; Reach the effect that single-band antenna is matched four frequency ranges respectively, improved the bandwidth of antenna.
Signal receiving/transmission device in the present embodiment is shown in figure 12; Comprise three match circuit networks; Wherein, one is one-level match circuit network, and other two is the second degree matches circuit network; Low frequency in the one-level match circuit network transmits on the branch road and comprises the first low frequency match circuit and the second low frequency match circuit, and its high frequency transmits on the branch road and comprises the first high frequency match circuit and the second high frequency match circuit; Two second degree matches circuit networks are connected on the high frequency transmission branch road and low frequency transmission branch road of said one-level match circuit network.
Wherein, The high frequency that is connected said one-level match circuit network transmits in the second degree matches circuit network on the branch road; Its low frequency transmits branch road and comprises the 5th low frequency match circuit and the 6th low frequency match circuit; Be used for the signal of two frequency ranges of high-frequency signal on the high frequency transmission branch road of said one-level match circuit network is subdivided into high-frequency signal and low frequency signal again, and pass through self high frequency transmission branch road and the high frequency transmission branch road transmission of low frequency transmission branch road in said one-level match circuit network respectively; Its high frequency transmits branch road and comprises the 5th high frequency match circuit and the 6th high frequency match circuit;
The high frequency that is connected said one-level match circuit network transmits in the second degree matches circuit network on the branch road; Be used for the signal of two frequency ranges of high-frequency signal on the low frequency transmission branch road of said one-level match circuit network is subdivided into high-frequency signal and low frequency signal again, and pass through self high frequency transmission branch road and the low frequency transmission branch road transmission of low frequency transmission branch road in said one-level match circuit network respectively; Its low frequency transmits branch road and comprises the 3rd low frequency match circuit and the 4th low frequency match circuit, and its high frequency transmits branch road and comprises the 3rd high frequency match circuit and the 4th high frequency match circuit.
Particularly; The structure of each high frequency match circuit and the high frequency match circuit structure described in the preceding text are identical; Repeat no more; Wherein, the first high frequency match circuit, the 3rd high frequency match circuit, the 5th high frequency match circuit all with the input of said first isolation module as self input, with the output of said first matching module output as self; The second high frequency match circuit, the 4th high frequency match circuit, the 6th high frequency match circuit with the input of said first matching module as self input, with the output of said first isolation module output as self.
The structure of each low frequency match circuit and the low frequency match circuit structure described in the preceding text are identical; Repeat no more; Wherein, The first low frequency match circuit, the 3rd low frequency match circuit, the 5th low frequency match circuit all with the input of said second isolation module as self input; With the output of said second matching module output as self, the second low frequency match circuit, the 4th low frequency match circuit, the 6th low frequency match circuit with the input of said second matching module as self input, with the output of said second isolation module output as self.
In the present embodiment, the structure of said signal processing apparatus is similar with embodiment two, and different is that said high frequency transmits branch road and low frequency transmits branch road receives two designated frequency band respectively through the mode of adding branch road signal.For example; Receive the signal of GSM1800/1900, four frequency ranges of GSM850/900 if desired; Can specify the GSM1800/1900 signal is high-frequency signal; The GSM850/900 signal is a low frequency signal, transmits branch road by high frequency and receives the GSM1800/1900 signal, and low frequency transmits branch road and receives the GSM850/900 frequency band signals.Particularly; High frequency transmits when receiving the GSM1800/1900 signal in the branch road; Receive sub-branch road via second high frequency and receive the GSM1900 signal, receive sub-branch road via second low frequency and receive the GSM1800 signal, low frequency transmits when receiving the GSM850/900 signal in the branch road; Receive sub-branch road via first high frequency and receive the GSM900 signal, receive sub-branch road via first low frequency and receive the GSM850 signal.
In the present embodiment, low frequency transmission branch road and each low frequency receive on the sub-branch road all can set up low noise amplifier, and this low noise amplifier is arranged on the branch road and gets final product between two low frequency match circuits.Accordingly, high frequency transmission branch road and each high frequency receive on the sub-branch road also can set up filter, and this filter is arranged on the branch road and gets final product between two high frequency match circuits, repeats no more.
In like manner; Receive the signal of six frequency ranges if desired, can also in the second degree matches circuit network therein the match circuit network be set again, receive the signal of eight frequency ranges if desired; Can also be respectively the match circuit network be set again in therein two second degree matches circuit networks; And the like, concrete implementation procedure is similar to the above process, repeats no more.
Embodiment four
Present embodiment specifies should being used as of signal receiving/transmission device provided by the present invention.
Shown in figure 13, for having the WCDMA system block diagram of GSM850/900/1800/1900 frequency range and W850/1900/2100 frequency range, in Figure 13, used the signal receiving/transmission device in the foregoing description one, distinguish W850 frequency range and W2100 frequency range.
Particularly, the shared branch road of W850/2100 is connected high frequency match circuit and low frequency match circuit respectively, wherein; After the transmitting of W2100 produced by the radiating portion of rf chip; The power amplifier (PA, Power Amplifier) that is sent to W2100 amplifies, with the signal process W2100 duplexer (comprising above-mentioned filter) after amplifying; Arrive the high frequency match circuit, be sent to antenna through duplexer and be transmitted into the space.The reception signal of W2100 arrives the high frequency match circuit through duplexer, arrives the W2100 transmission circuit of rf chip via duplexer (comprising above-mentioned filter).After the transmitting of W850 produced by the radiating portion of rf chip; The power amplifier that is sent to W850 amplifies; Signal after amplifying through W850 duplexer (comprising above-mentioned filter), is arrived the low frequency match circuit, be sent to antenna through duplexer and be transmitted into the space.The reception signal of W850 arrives the low frequency match circuit through duplexer, arrives the W850 transmission circuit of rf chip via duplexer (comprising above-mentioned filter).So, need behind the shared branch road of W850/2100, duplexer be set, just can receive W2100 frequency band signals and W850 frequency band signals.
Particularly, in the present embodiment, the low frequency match circuit adopts circuit structure shown in Figure 7, and the high frequency match circuit can adopt circuit structure shown in Figure 6, and its concrete parameter can be: C1=4.7pF; C2=4.7pF, C3=5.6pF, C4=2.2pF, the concrete parameter of C5 is adjusted by circuit conditions; C5 is a vacancy in this example, L1=6.8nH, and L2=6.8nH, the concrete parameter of L3 is adjusted by circuit conditions; C5 is a vacancy in this example, L4=6.8nH, L5=2.2nH, L6=6.8nH.
Through measuring, when receiving W2100 signal and W850 signal by the way, its isolation is superior to 20dB.The receive loss of W850 frequency range is 0.5-0.6dB, and the receive loss of W2100 frequency range is 0.22-0.3dB, and is visible, uses signal receiving/transmission device of the present invention and not only can save duplexer, reduces system complexity, and can reach high-isolation and low-loss.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (14)
1. a match circuit is characterized in that, said match circuit comprises: isolation module, filtration module and matching module; Said filtration module is connected between said isolation module and the matching module, wherein, and isolation module; Be used to isolate the signal beyond the assigned frequency, transmit the signal of assigned frequency; Filtration module is used to filter out the signal beyond the said assigned frequency; Matching module is used for the signal of said assigned frequency is carried out matching treatment.
2. a match circuit network is characterized in that, said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road, wherein,
Said high frequency transmits branch road and comprises one or two high frequency match circuit; Said high frequency match circuit comprises: first isolation module, first filtration module and first matching module; Said first filtration module is connected between said first isolation module and said first matching module, wherein, and first isolation module; Be used to isolate low frequency signal, transmit high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment;
Said low frequency transmits branch road and comprises one or two low frequency match circuit; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
3. match circuit network according to claim 2 is characterized in that, said first isolation module comprises first electric capacity, and said first filtration module comprises first series resonant tank, and said first matching module comprises said the 3rd electric capacity and the 3rd inductance;
Said the 3rd electric capacity is connected with the 3rd inductance; And said the 3rd inductance ground connection; Said first series resonant tank, one end ground connection; One end of said first electric capacity connects the other end of said first series resonant tank and an end of the 3rd electric capacity respectively, and the other end is as an end of said high frequency match circuit, and the tie point between said the 3rd electric capacity and the 3rd inductance is as the other end of said high frequency match circuit.
4. match circuit network according to claim 3 is characterized in that, said first isolation module also comprises first inductance, and said first inductance is parallelly connected with said first electric capacity;
Wherein, Satisfy formula between said first inductance and first electric capacity:
wherein L representes the inductance value of first inductance; C representes the capacitance of first electric capacity; F representes that the appointment of said high-frequency signal suppresses the centre frequency of frequency range, is lower than the band connection frequency of said first isolation module.
5. according to claim 3 or 4 described match circuit networks; It is characterized in that; Said first series resonant tank comprises second inductance and second electric capacity that is connected in series; Wherein, Satisfy formula between said second inductance and second electric capacity:
wherein L representes the inductance value of second inductance; C representes the capacitance of second electric capacity, and F representes that the appointment of said high-frequency signal suppresses the centre frequency of frequency range, is lower than the band connection frequency of said first isolation module.
6. match circuit network according to claim 2 is characterized in that, said second isolation module comprises the 4th inductance, and second filtration module comprises series resonant tank, and second matching module comprises said the 6th inductance and the 5th electric capacity;
Said the 6th inductance and the 5th capacitances in series; And said the 5th capacity earth; Said second series resonant tank, one end ground connection; One end of said the 4th inductance connects the other end of said second series resonant tank and an end of said the 6th inductance respectively, and the other end is as an end of said low frequency match circuit, and the tie point between said the 6th inductance and the 5th electric capacity is as the other end of said low frequency match circuit.
7. match circuit network according to claim 6; It is characterized in that; Said second series resonant tank comprises the 5th inductance and the 4th electric capacity that is connected in series; Wherein, Satisfy formula between said the 5th inductance and the 4th electric capacity:
wherein L representes the inductance value of the 5th inductance; C representes the capacitance of the 4th electric capacity, and F representes that the appointment of said low frequency signal suppresses the centre frequency of frequency range, is higher than the band connection frequency of said second isolation module.
8. according to each described match circuit network of claim 2 to 7, it is characterized in that,
When said high frequency transfer circuit comprises two high frequency match circuits, be connected in series between first matching module of said two high frequency match circuits;
When said low frequency transfer circuit comprises two low frequency match circuits, be connected in series between second matching module of said two low frequency match circuits.
9. according to each described match circuit network of claim 2 to 7; It is characterized in that; Said low frequency transmits branch road and also comprises: low noise amplifier; Said low noise amplifier is connected on second matching module of a said low frequency match circuit, between second matching module of perhaps said two low frequency match circuits.
10. match circuit network according to claim 8 is characterized in that, said low noise amplifier is worked when needs receive low frequency signal, in the time need not receiving low frequency signal, does not work.
11. according to each described match circuit network of claim 2 to 7; It is characterized in that; Said high frequency transmits branch road and also comprises: filter; Said filter is connected on first matching module of a said high frequency match circuit, between first matching module of perhaps said two high frequency match circuits.
12. signal receiving/transmission device; It is characterized in that; Said signal receiving/transmission device comprises: antenna, match circuit network, first transmission circuit and second transmission circuit; Wherein, said match circuit network transmits low frequency signal between the said antenna and first transmission circuit, and high-frequency signal is transmitted between the said antenna and second transmission circuit;
Said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein,
Said high frequency transmits branch road and comprises a high frequency match circuit; Said high frequency match circuit comprises: first isolation module, first filtration module and first matching module; Said first filtration module is connected between said first isolation module and said first matching module, wherein, and first isolation module; Be used to isolate low frequency signal, transmit high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment;
Said low frequency transmits branch road and comprises a low frequency match circuit; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
13. signal receiving/transmission device; It is characterized in that; Said signal receiving/transmission device comprises: antenna, at least one match circuit network, transmission circuit; Wherein, said at least one match circuit network is divided into high-frequency signal and low frequency signal with the signal of a plurality of frequencies, and between said antenna and transmission circuit, transmits respectively;
Said match circuit network comprises: high frequency transmits branch road and low frequency transmits branch road; Wherein,
Said high frequency transmits branch road and comprises two high frequency match circuits that are connected in series; Said high frequency match circuit comprises: first isolation module, first filtration module and first matching module; Said first filtration module is connected between said first isolation module and said first matching module, wherein, and first isolation module; Be used to isolate low frequency signal, transmit high-frequency signal; First filtration module is used to filter out other signals beyond the said high-frequency signal; First matching module is used for said high-frequency signal is carried out matching treatment;
Said low frequency transmits branch road and comprises two low frequency match circuits that are connected in series; This low frequency match circuit comprises: second isolation module, second filtration module and second matching module; Said second filtration module is connected between said second isolation module and said second matching module, wherein, and second isolation module; Be used to isolate high-frequency signal, transmit low frequency signal; Second filtration module is used to filter out other signals beyond the said low frequency signal; Second matching module is used for said low frequency signal is carried out matching treatment.
14. signal receiving/transmission device according to claim 13 is characterized in that, a said match circuit network is used for the signal of two frequencies is divided into high-frequency signal or low frequency signal;
And, between said antenna and transmission circuit, transmit respectively, perhaps transmit branch road or low frequency and transmit on the branch road and transmit at high frequencies that self connected, in other said match circuit networks.
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| CN201110376547.8A CN102420625B (en) | 2011-11-23 | 2011-11-23 | Matching circuit, matching circuit network and signal transmit-receive device |
| PCT/CN2012/070765 WO2013075404A1 (en) | 2011-11-23 | 2012-01-30 | Matching circuit, matching circuit network, and signal transceiver device |
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| CN201110376547.8A CN102420625B (en) | 2011-11-23 | 2011-11-23 | Matching circuit, matching circuit network and signal transmit-receive device |
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| CN102420625A true CN102420625A (en) | 2012-04-18 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103905074A (en) * | 2012-12-27 | 2014-07-02 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104104402A (en) * | 2013-04-07 | 2014-10-15 | 深圳富泰宏精密工业有限公司 | Electronic device |
| CN104954052A (en) * | 2014-03-28 | 2015-09-30 | 国基电子（上海）有限公司 | Multiple-input multiple-output antenna transmitting-receiving circuit |
| CN105071055A (en) * | 2015-07-28 | 2015-11-18 | 福建联迪商用设备有限公司 | High-frequency interference preventive RF antenna impedance match circuit and design method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050245283A1 (en) * | 2002-08-02 | 2005-11-03 | Koninklijle Phillips Electronics N.V. | High frequency module |
| US20060091975A1 (en) * | 2003-02-10 | 2006-05-04 | Epcos A G | Front-end circuit comprising thin-film resonators |
| JP2006340268A (en) * | 2005-06-06 | 2006-12-14 | Matsushita Electric Ind Co Ltd | Transmission/reception circuit and wireless communication device using the same |
| CN1951006A (en) * | 2004-04-30 | 2007-04-18 | 诺基亚公司 | Front-end topology for multiband multimode communication engines |
| CN201174413Y (en) * | 2008-03-25 | 2008-12-31 | 江苏华兴通讯科技有限公司 | Antenna diplexer |
| CN101409568A (en) * | 2007-10-08 | 2009-04-15 | 斯凯科斯电子(深圳)有限公司 | TDMB double-frequency antenna and design method thereof |
| CN101814928A (en) * | 2010-03-23 | 2010-08-25 | 华为终端有限公司 | Receiving device and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030002452A (en) * | 2001-06-29 | 2003-01-09 | 엘지전자 주식회사 | Triple band embodiment circuit in mobile phone |
| KR100902296B1 (en) * | 2001-08-10 | 2009-06-10 | 히타치 긴조쿠 가부시키가이샤 | Multi-band antenna switch circuit, and layered module composite part and communcation device using them |
| CN200994179Y (en) * | 2006-11-23 | 2007-12-19 | 中兴通讯股份有限公司 | TD-SCDMA/PHS single-antenna dual-model dual-standby mobile phone |
-
2011
- 2011-11-23 CN CN201110376547.8A patent/CN102420625B/en active Active
-
2012
- 2012-01-30 WO PCT/CN2012/070765 patent/WO2013075404A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050245283A1 (en) * | 2002-08-02 | 2005-11-03 | Koninklijle Phillips Electronics N.V. | High frequency module |
| US20060091975A1 (en) * | 2003-02-10 | 2006-05-04 | Epcos A G | Front-end circuit comprising thin-film resonators |
| CN1951006A (en) * | 2004-04-30 | 2007-04-18 | 诺基亚公司 | Front-end topology for multiband multimode communication engines |
| JP2006340268A (en) * | 2005-06-06 | 2006-12-14 | Matsushita Electric Ind Co Ltd | Transmission/reception circuit and wireless communication device using the same |
| CN101409568A (en) * | 2007-10-08 | 2009-04-15 | 斯凯科斯电子(深圳)有限公司 | TDMB double-frequency antenna and design method thereof |
| CN201174413Y (en) * | 2008-03-25 | 2008-12-31 | 江苏华兴通讯科技有限公司 | Antenna diplexer |
| CN101814928A (en) * | 2010-03-23 | 2010-08-25 | 华为终端有限公司 | Receiving device and method |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637964A (en) * | 2012-04-28 | 2012-08-15 | 上海华勤通讯技术有限公司 | Antenna system and mobile terminal thereof |
| CN103905074A (en) * | 2012-12-27 | 2014-07-02 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104104402A (en) * | 2013-04-07 | 2014-10-15 | 深圳富泰宏精密工业有限公司 | Electronic device |
| CN104954052A (en) * | 2014-03-28 | 2015-09-30 | 国基电子（上海）有限公司 | Multiple-input multiple-output antenna transmitting-receiving circuit |
| CN104954052B (en) * | 2014-03-28 | 2018-08-07 | 国基电子（上海）有限公司 | Multi-input/output antenna transmission circuit |
| CN105071055A (en) * | 2015-07-28 | 2015-11-18 | 福建联迪商用设备有限公司 | High-frequency interference preventive RF antenna impedance match circuit and design method thereof |
| CN105245239A (en) * | 2015-10-26 | 2016-01-13 | 成都国光电气股份有限公司 | Preceding stage driver |
| CN105915262A (en) * | 2016-06-30 | 2016-08-31 | 宇龙计算机通信科技(深圳)有限公司 | Radio frequency transmitting circuit and mobile terminal |
| CN111357199A (en) * | 2017-11-24 | 2020-06-30 | 法国大陆汽车公司 | Authentication reader for opening members of motor vehicles |
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| CN109245786B (en) * | 2018-11-13 | 2023-12-01 | 上海艾为电子技术股份有限公司 | Module circuit applied to radio frequency front-end receiver |
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| CN112465084B (en) * | 2020-11-25 | 2024-03-01 | 广州智慧城市发展研究院 | Verification system for reader-writer |
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| CN113765527A (en) * | 2021-07-23 | 2021-12-07 | 上海闻泰信息技术有限公司 | Frequency divider and control method thereof |
| CN115149973A (en) * | 2021-11-09 | 2022-10-04 | 浙江利尔达物联网技术有限公司 | NB-Iot module |
| WO2023246421A1 (en) * | 2022-06-23 | 2023-12-28 | 华为技术有限公司 | Receiver and electronic device |
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|---|---|
| CN102420625B (en) | 2014-04-30 |
| WO2013075404A1 (en) | 2013-05-30 |
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