CN103916159B - Reduce the circuit influenced with the relevant insertion loss of radio-frequency power coupler and method - Google Patents

Abstract

Disclose for reducing circuit and the method that the insertion loss associated with radio frequency (RF) power coupler influences.In some implementations, RF circuits, which can include, is configured to transmit the first path of the first RF signals in first band, and is configured to transmit the second path of the 2nd RF signals in second band.The RF circuits can further include power detector, which has the first coupler for being configured to detection along the power of first path, and be configured to second coupler of the detection along the power in the second path.First coupler can be connected with the second coupler with daisy chain configuration.The RF circuits can further include the adjusting circuit along at least one realization in first path and the second path.The adjusting circuit is configurable to that different frequency ranges will be moved to from the frequency-response characteristic that power detector is associated.

Description

Reduce the circuit influenced with the relevant insertion loss of radio-frequency power coupler and method

Cross reference to related applications

It is submitting, entitled " associated with radio-frequency power coupler for reducing this application claims on October 29th, 2012 The U.S. Provisional Application No.61/719 of the circuit and method of insertion loss trap (notch) ", 865 priority, its content are led to Reference entirety is crossed clearly to be herein incorporated.

Technical field

The disclosure relates generally to reduce the insertion loss influence associated with radio-frequency power coupler.

Background technology

In some wireless devices, power coupler can be used for maximum of such as limitation for the transmission signal of multiple frequency bands Power.Such power coupler can be linked together with daisy chain to share coupled line, be thus spaced apart on circuit boards.

Such structure can be caused by associated with daisy chain circuit in high frequency band caused by various interactions Insertion loss trap (notch).If the insertion loss trap in the frequency range of allocated frequency band is sufficiently large and cannot calibrate, The problem of then associated with this insertion loss trap, can be more serious.

The content of the invention

According to multiple realizations, this disclosure relates to a kind of radio frequency (RF) circuit, it includes be configured in first band transmission the The first path of one RF signals, and it is configured to transmit the second path of the 2nd RF signals in second band.The RF circuits are further Comprising power detector, which has the first coupler for being configured to detection along the power of first path, and matches somebody with somebody It is set to second coupler of the detection along the power in the second path.First coupler is connected with the second coupler with daisy chain configuration Connect.The RF circuits further include the adjusting circuit along at least one realization in first path and the second path.Adjust electricity Road is configured to that different frequency ranges will be moved to from the frequency-response characteristic that power detector is associated.

In certain embodiments, the part in the second path can be made by adjusting circuit.In first path and the second path Each can include power amplifier (PA), the output matching network for being connected to PA and corresponding power coupler.Second tunnel Footpath can further include the adjusting circuit realized between output matching network and the second power coupler.The adjusting circuit can be with The inductance realized between output matching network and the second power coupler, such as inductor.The adjusting circuit can be into One step includes the capacitance being connected in series with the inductance, such as capacitor.

In certain embodiments, output matching network can include the matching inductance for the output for being connected to PA, and be connected to The shunt capacitance of output with inductance.

In certain embodiments, frequency-response characteristic can include falling into the power spectrum associated with power detector Ripple.In certain embodiments, first band can include E-UTRA frequency bands B7, B38 or B40.Second band can include E-UTRA frequencies Band B18 or B8.

In certain embodiments, different frequency ranges can include the first or second untapped scope in path.At some In embodiment, which can be included in the frequency range between E-UTRA frequency bands B8 and B4.In some embodiments In, adjust circuit and can be configured to for trap to be moved to lower frequency.In certain embodiments, the lower frequency that trap is moved to Rate can be between the frequency associated with first band and second band.

In certain embodiments, this disclosure relates to which a kind of radio frequency (RF) module, it includes being configured to accommodate multiple components The RF circuits of package substrate and realization on package substrate.The RF circuits, which include, to be configured to transmit the first RF signals in first band First path, and be configured to second band transmit the 2nd RF signals the second path.The RF circuits also include power detection Device, the power detector have is configured to detection along first path power the first coupler, and be configured to detection along Second coupler of the power in the second path.First coupler is connected with second coupler with daisy chain configuration.RF electricity Road also includes the adjusting circuit along at least one realization in the first path and the second path.The adjusting circuit is configured to Different frequency ranges will be moved to from the frequency-response characteristic that power detector is associated.

In certain embodiments, RF modules can be power amplifier module, so that the first path includes the first work( The output of rate amplifier (PA) and second path include the output of the 2nd PA.In certain embodiments, first and second Both PA can be realized on a semiconductor die.

According to numerous embodiments, this disclosure relates to a kind of radio frequency (RF) equipment, it includes being configured to processing RF signals Transceiver, and with the transceiver communications and it is configured to the antenna of the transmission of the RF signals of convenient amplification.The RF equipment is into one Step includes power amplifier (PA) module for the RF signals for being connected to transceiver and being configured to generation amplification.The PA modules, which include, matches somebody with somebody It is set to and transmits the first path of the first RF signals in first band, and is configured to transmit the second of the 2nd RF signals in second band Path.The PA modules also include power detector, which, which has, is configured to detection along the power of first path First coupler, and it is configured to second coupler of the detection along the power in the second path.First coupler and second coupling Clutch is connected with daisy chain configuration.The PA modules are also included along at least one realization in the first path and the second path Adjusting circuit.The adjusting circuit is configured to that different frequencies will be moved to from the frequency-response characteristic that power detector is associated Scope.In certain embodiments, RF equipment can include wireless device.

In many teachings, this disclosure relates to a kind of radio frequency (RF) circuit, it includes the first circuit, which has Include the frequency response of the feature in selected frequency range.RF circuits also include second circuit, the second circuit be coupled to this One circuit, so that feature at least a portion of the frequency response is attributed to the coupling.RF circuits are also included and are configured to the spy Levy the adjusting circuit removed from selected frequency range.

In certain embodiments, the feature such as insertion loss trap, it can be moved to lower frequency.

According to a variety of realizations, this disclosure relates to a kind of method for being used to operate radio frequency (RF) equipment.This method includes detection Along the first path in daisy chain configuration and the power in the second path.The first path is configured as in first band transmission the One RF signals, second path are configured as transmitting the 2nd RF signals in second band.This method is also comprising adjusting first path With it is at least one in the second path, different frequency models will be moved to from the frequency-response characteristic that power detection is associated Enclose.

In some implementations, this disclosure relates to a kind of method for being used to operate radio frequency (RF) equipment.This method includes coupling First circuit and second circuit, first circuit have the frequency response for including the feature in selected frequency range.The frequency This feature at least a portion of response is attributed to the coupling.This method also comprising adjust second circuit with by this feature from institute's frequency-selecting Rate scope is removed.

In order to summarize the disclosure, certain aspects of the invention, advantage and the feature of innovation are described herein.It should manage Solution, any specific embodiment according to the present invention need not realize all these advantages.Therefore, the present invention can be in such a way Be practiced or carried out, which obtains or optimizes an advantage or one group of advantage taught herein, without realize teaching herein or It is recommended that further advantage.

Brief description of the drawings

Figure 1A and 1B shows that radio frequency (RF) circuit can produce undesirable sound in frequency band interested in some configurations Should.

Fig. 2A and 2B, which shows to provide to the RF circuits of Fig. 1 in some embodiments, adjusts circuit with will be undesirable Response is removed from frequency band interested.

Fig. 3 shows that the example RF circuits of undesirable response can be produced in operational frequency bands.

Fig. 4 A-4C show the example of the various traps in the frequency response associated with the exemplary circuit of Fig. 3.

Fig. 5 A and 5B show the RF each with the adjusting circuit for being configured to remove notch response from operational frequency bands The example of circuit.

Fig. 6 shows the example of the adjusting circuit of Fig. 5.

Fig. 7 shows another example of the adjusting circuit of Fig. 5.

Fig. 8 shows the example of the notch response due to adjusting circuit and being removed from operational frequency bands.

Fig. 9 and 10 shows that insertion loss performance can be maintained substantially by including adjusting circuit for an exemplary operations frequency band.

Figure 11 and 12 shows that insertion loss performance can be maintained substantially by including adjusting circuit for another operational frequency bands Another example.

Figure 13 shows to be implemented to operate the processing of the RF equipment with one or more features as described herein.

Figure 14 shows to be implemented to operate the another of the RF equipment with one or more features as described herein A processing.

Figure 15 shows that the one or more features of the disclosure in certain embodiments can be realized in RF modules.

Figure 16 A and 16B show that the one or more features of the disclosure in certain embodiments can be realized in a wireless device.

Embodiment

Headings provided herein (if any) is just for the sake of convenient, the model of the invention required by must not influencing Enclose or connotation.

Figure 1A schematically depict radio frequency (RF) circuit 10, it, which can be configured as, receives RF signals (RF_in) and produce Raw output signal (RF_out).In some cases, and as shown in Figure 1B, such circuit can be produced included in institute's selected frequency The undesirable frequency response decreased or increased in scope 20.For example, show that frequency response curve 12 includes wave crest 14, its portion Divide and be present in frequency range 20 and exceed threshold value 16.In another example, show that frequency response curve 32 includes trough 34, Its part is present in frequency range 20 and is less than threshold value 36.

Fig. 2A shows that in certain embodiments RF circuits 100 may include to adjust circuit 102.Here for the purpose of description, It it will be assumed similarly to show with the RF circuits with reference to Figure 1A and 1B descriptions without the RF circuits 100 for adjusting circuit 102.

Show to exist and adjust circuit 102 to produce the frequency response after adjusting, and describe the adjusting in fig. 2b Example.For example, frequency response curve 112 corresponding with the example response curve 12 of Figure 1B, which is shown as including, has been moved out of frequency The wave crest 114 of scope 20.Therefore, response curve 112 in frequency range 20 partially below threshold value 16.In another example In, frequency response curve 132 corresponding with the example response curve 32 of Figure 1B, which is shown as including, has been moved out of frequency range 20 Trough 134.Therefore, part of the response curve 132 in frequency range 20 is higher than threshold value 36.

In fig. 2b, example wave crest 114 and example trough 134 are described as being moved to (such as arrow 118,138) lower Frequency.It is to be appreciated, however, that the frequency for being moved to higher can be carried out.

Fig. 3 shows example RF circuits 10, it can be benefited from one or more features as described herein.Circuit 10 is total Body is related to the power coupler for RF equipment, such as wireless phone.Such power coupler can be used to, for example, limitation nothing The maximum transmit power or specific absorption rate (SAR) of line equipment.

In exemplary circuit 10, power coupler component can be generally indicated as 70 and be configured as two examples Frequency band A and B provide power detection.First band A (such as high frequency band) is shown as being facilitated by path A (facilitate), path A includes the RF input terminals (RFIN_A) for power amplifier (PA) 50a.PA50a may include one Or multiple levels, and the output of afterbody is shown as being connected to output matching network 60a.Although being not shown in Fig. 3, Path A can also include input matching network and/or one or more inter-stage matching networks.The output of matching network 60a is shown Go out to be coupled before duplexer 80a is provided to power coupling element, duplexer 80a is configured so that one or more connect The antenna of node ANT_A is connected in (such as RF signals of the amplification of passage path A) transmission and (such as to RX_P_A and RX_ The reception signal of N_A) duplex capability is provided between reception.

Similarly, second band B (such as low-frequency band) is shown as being facilitated by path B, and path B is included and put for power The RF inputs (RFIN_B) of big device (PA) 50b.PA50b may include one or more levels, and the output of afterbody is illustrated To be connected to output matching network 60b.Although being not shown in Fig. 3, path B may also include input matching network and/or one A or multiple inter-stage matching networks.The output of matching network 60b is shown as before duplexer 80b is provided to and power coupling Close element coupling, duplexer 80b is configured so that one or more antennas for being connected to node ANT_B in (such as passage path B Amplification RF signals) provide duplexing work(between transmission and (such as reception signal to RX_P_B and RX_N_B) reception Energy.

In exemplary circuit 10, PA50a, 50b are shown as being biased and being controlled by biasing/control circuit 52.In some realities Apply in example, this kind of biasing and/or control operation can be implemented in known manner.

In exemplary circuit 10, power combiner circuit (not shown) or chrysanthemum can be used in the coupler output of each frequency band Chain is grouped together, wherein each coupler shares a coupled line.It can be designed using daisy chain with such as specific power group Close design and more save the space on circuit board (such as phone plate).

In some configurations, can be due to output using the power detection at the output of low-frequency band PA of chrysanthemum link coupler Matching network, coupler and/or duplexer interaction and in daisy chain circuit high frequency band produce insertion loss trap. In some cases, in the design that high frequency band and low-frequency band coexist, which can be more serious.Notch depth can change, And can be equal to or more than transceiver detector dynamic range, and therefore usually phone plate calibrate during cannot school go out. In the environment of example dual-band configuration, two foregoing daisy chain traps can be produced.

Fig. 4 A-4C show the example of trap in frequency response, it is in there are two RF paths (path A and path B) One or both in the case of can cause chrysanthemum link coupler (such as 70 in Fig. 3).In Figure 4 A, for forward power Frequency spectrum, shows that the analog response of daisy chain coupler component and measurement respond according to S parameter S21.The chrysanthemum link coupler group Part can be used for exemplary double frequency-band PA circuits.In two responses, deep and significant trap appears in about 2.0 to 2.6GHz Frequency range in.The scope can (general land of evolution wirelessly connects including the E-UTRA of such as B7, B34, B38 and B40 Enter) operational frequency bands, or it is overlapping with the operational frequency bands.

In figure 4b, for forward power frequency spectrum, similar daisy chain coupler component is shown according to S parameter S21 Analog response and measurement respond.The daisy chain coupler component is used for another exemplary double frequency-band PA circuit.In two responses In, deep and significant trap is appeared in about 2.0 to 2.6GHz frequency range.The scope can include such as B7, The E-UTRA operational frequency bands of B34, B38 and B40, or it is overlapping with the operational frequency bands.

In fig. 4 c it is illustrated that damaged for example traps of the S21 in forward power frequency spectrum and exemplary corresponding echo (RL) wave crest is consumed, to provide significant deterioration at the frequency and its surrounding of about 2.0GHz.The frequency range can significantly with Such as the operational frequency bands of B1 are overlapping, and thus influence the operational frequency bands.

The loseless method that above-mentioned daisy chain trap is completely eliminated substantially there is no success.Described herein is to be used for The trap is moved into influence reduction or the frequency range that substantially eliminates of the trap for the operational frequency bands from operational frequency bands Circuit and method various examples.In some implementations, the frequency range that trap is moved to can include untapped frequency Rate scope.In some implementations, which can be completely untapped for given wireless device. During some are realized, which can include being not used by during operation in the operational frequency bands but can be with The scope used in another operator scheme.

Fig. 5 A and 5B show it is similar to the exemplary circuit of Fig. 3 10 but equipped with tune in given RF signal paths The example of the circuit on economize on electricity road 102.The example of the adjusting circuit 102 will be described in further detail herein.Fig. 5 A show this hair Bright one or more features can be realized in the configuration with exemplary two RF signal paths similar to Fig. 3.Fig. 5 B show Having gone out the one or more features of the present invention can realize in the configuration with more than two RF signal paths.

Example arrangement shown in Fig. 5 A is similar with the configuration in Fig. 3, but with the addition of with one described herein or more Adjusting the circuit 102a, 102b of a feature.The example of more detailed description circuit section 150a, 150b herein, circuit section 150a, Each afterbody for including its corresponding PA50 of 150b (is 50a for circuit section 150a, and is for circuit section 150b 50b), output matching network 60 (be 60a for circuit section 150a, and be 60b for circuit section 150b) and adjusting circuit 102 (are 102a for circuit section 150a, and are 102b for circuit section 150b).

The example arrangement shown in Fig. 5 B is similar with the configuration of Fig. 5 A, but with the addition of the 3rd RF signal paths (path C) with And corresponding adjusting circuit 102c.The example of more detailed description circuit section 150a, 150b, 150c herein, circuit section 150a, 150b, 150c each include afterbody of its corresponding PA50, output matching network 60 and adjust circuit 102.

In the example of Fig. 5 A and 5B, each RF path is shown as including adjusting circuit 102.In some implementations, Not every RF paths are required for having the adjusting circuit.For example, high frequency band coupler usually will not be in frequency interested Or throw into question in frequency range (such as 0.5 to 2.6GHz).The notch response as caused by coupling the high frequency band is usually located at height (for example, about 5.5GHz) at frequency much.Therefore, in the example arrangement, high band RF path can have or can be with Without adjusting circuit 102.

Fig. 6 shows the example of the circuit section 150 with reference to Fig. 5 A and 5B description.In certain embodiments, can be for Fig. 5 A Circuit section 150a and 150b and Fig. 5 B in circuit section 150a-150c in each implement Fig. 6 circuit section 150. In example, exaggerated RF signals are shown as being provided to associated with the afterbody of PA (50 in Fig. 5 A and 5B) bipolar The base stage of junction transistor (BJT).The collector of BJT is shown as providing the output of the afterbody of PA, and the output signal It is shown as matching by output matching network 60.It should be appreciated that it can also use other types of transistor in PA50.

Example output matching network 60 is outputted as including the inductance L1 (examples along the path for the collector for being connected to BJT Such as inductor).Output matching network 60 be outputted as being additionally included between the output the earth of inductance L1 shunt capacitance C1 (such as Capacitor).In some implementations, capacitance can be provided so as to connect with inductance L1.It should be appreciated that also it can be used other types of Output matching network.

Fig. 6 shows that the inductance L2 in some implementations, adjusting circuit 102 and can including connect with inductance L1 is (such as electric Sensor).Therefore, the signal of amplification is being provided to coupled section (such as the corresponding portion of the chrysanthemum link coupler 70 in Fig. 5 A and 5B Point) before, it can be propagated from the collector of BJT, by L1, and pass through L2.

Fig. 7 shows another example of the circuit section 150 with reference to Fig. 5 A and 5B description.In this example, PA50 is most Rear stage and output matching network 60 can with reference to Fig. 6, described those are similar.

Fig. 7 show in some implementations, adjust circuit 102 can include inductance L2 (such as inductor) and with inductance L1 The capacitance C2 (such as capacitor) being connected in series.Therefore, the signal of amplification is being provided to coupled section (such as in Fig. 5 A and 5B The respective part of chrysanthemum link coupler 70) before, it can be propagated from the collector of BJT, by L1, by L2 and pass through C2.

In some implementations, adjusting some or all of above-mentioned example of circuit 102 can be configured as correcting output The band external impedance of distribution network, mobile (shift) is moved extremely by the trap frequency associated with daisy chain coupler component, for example, The frequency range being not used by between frequency band 8 and frequency band 4 (such as 0.960 to 1.710GHz).In some implementations, Fig. 7 Series LC circuit 102 can be configured to supply above-mentioned function, while the circuit 102 of the only inductance than Fig. 6 is preferably reduced Or minimize the degeneration of the other performance parameter of such as insertion loss and frequency-flat degree.

In some implementations, each of the adjusting circuit 102 of Fig. 6 and 7 can substitute along RF signal paths provide, Capacitance (not shown) after output matching network 60 but before power coupled section.This will be described in greater detail herein to replace Change and the example of beneficial effect.

Fig. 8 is illustrated how can be by the one or more operational frequency bands or overlapping with the one or more operational frequency bands of covering Trap be moved to the example for being not used by frequency range of the above-mentioned example scope between such as frequency band 8 and frequency band 4.With Fig. 3 The corresponding curve 160 of circuit be outputted as including trap 162, its undesirably cover frequency band B7, B38 and B40 or with this There is the value of -2dB lower than example threshold in the frequency range of band overlapping.

In the example of fig. 8, curve 170 and 180 is outputted as having that its is respective, moves between B8 and B4 frequency bands not Trap 172,182 in the frequency range used.Curve 170,180 cover above-mentioned B7/B38/B40 frequency bands or with the frequency band weight Folded part is shown as with the numerical value for being much higher than -2dB threshold values.

Arrow 164 shows approximate gain, its can curve 160 trap 162 and example plot 180 it is generally flattened Obtained between smooth response.The arrow 166 for representing power detection dynamic range (such as 4dB) shows unadjusted trap 162 Undesirably close to more than the dynamic range, and the trap after moving 172,182 is well within the dynamic range.Cause This, if calibrated for one or two expectations in response 170,180, it can be implemented.

Its trap 172 be moved out of operational frequency bands B7/B38/B40 example response curve 170 correspond to be exemplary low frequency band Adjusting circuit 102 in Fig. 7 that B18 signal paths provide.The shunt capacitance C1 of output matching network 60 has about 7.6pF's Value.Adjust the inductance L2 and capacitance C2 of circuit 102 has the value of about 4.3nH and 5.6pF respectively.Adjust circuit 102 and substitute edge The capacitance (not shown) of signal path, about 18pF at the output of output matching network 60.In the example in figure 7, L1 It is output matching inductance (such as inductance coil), it can be implemented as trace (trace) rather than obvious surface mounting assembly. Inductance L1 has the value of about 2.3nH in this example, it is usually not responsive to adjust the introducing of circuit 102 and change.

Its trap 182 be moved out of operational frequency bands B7/B38/B40 example response curve 180 correspond to be exemplary low frequency band Adjusting circuit 102 in Fig. 7 that B8 signal paths provide.The shunt capacitance C1 of output matching network 60 has about 6.8pF's Value.Adjust the inductance L2 and capacitance C2 of circuit 102 has the value of about 4.7nH and 5.1pF respectively.Adjust circuit 102 and substitute edge The capacitance (not shown) of signal path, about 18pF at the output of output matching network 60.

Fig. 9-12 shows that adjusting circuit described herein can provide desired trap locomotive function (such as Fig. 8), and There is no obvious performance degradation in other regions.Fig. 9 and 10 is shown respectively with (such as curve 170 of Fig. 8) and without (example Such as the curve 160 of Fig. 8) adjust circuit in the case of, for S11 parameter of exemplary low frequency with B18 signal paths Smith figure Table.Figure 11 and 12 is respectively illustrated with (such as curve 180 of Fig. 8) and is adjusted circuit without (such as curve 160 of Fig. 8) In the case of, for the Smith charts of S11 parameter of the exemplary low frequency with B8 signal paths.For all above-mentioned example arrangements, Each signal path has the load impedance of about 500hms.

For the example (Fig. 9 and 10) of B18 frequency bands, input impedance (Zin) measurement, and result are obtained at three frequencies It is listed in Table 1 below.As can be seen that the Zin values in the case of with adjusting circuit for B18 signal paths are better than without adjusting electricity For those Zin values of B18 signal paths in the case of road.

Table 1

For the example (Figure 11 and 12) of B8 frequency bands, input impedance (Zin) measurement, and result are obtained at three frequencies It is listed in Table 2 below.As can be seen that the Zin values in the case of with adjusting circuit for B8 signal paths are better than without adjusting electricity For those Zin values of B8 signal paths in the case of road.

Table 2

Figure 13 shows processing 200, it can be implemented as RF of the operation with one or more features described herein and set It is standby.In certain embodiments, which may include one or more exemplary circuits described referring for example to Fig. 5-7.In block In 202, the configuration of daisy chain power detection can be provided for the first and second RF signal paths.In block 204, the first and second RF At least one in path is adjusted to that different frequency models will be moved to from the frequency-response characteristic that power detection is associated Enclose.

Figure 14 shows processing 210, it can be implemented as RF of the operation with one or more features described herein and set It is standby.In certain embodiments, which may include one or more exemplary circuits described referring for example to Fig. 5-7.In block In 212, the first circuit and second circuit of RF equipment can be coupled to, so that the first circuit includes having caused by due to coupling The frequency response of feature in selected frequency range.In certain embodiments, which can be implemented as daisy chain power detection Circuit, the daisy chain power-sensing circuit are configured to the output power stage of the first and second RF power amplifiers of detection.In block 214 In, second circuit can be adjusted to remove this feature from selected frequency range.In some implementations, this feature can be included in Trap in frequency response.In some implementations, which can be moved to the lower frequency that the first and second circuits are unused Rate scope.

In some implementations, one or more features described herein can be included in a module.Figure 15 is schematically Show exemplary module 300, it includes the PA chips 302 for having a PA50 for each in multiple amplification paths.It is logical Exemplary mode is crossed, the first and second amplification paths are shown as including PA50a, 50b, each of which has one or more Level；And to PA50a, the input rf signal (RFIN_A, RFIN_B) of 50b is shown as being provided by its respective input matching Network 308a, 308b.

PA50a, 50b are shown as communicating with biasing/control circuit 52 (line 306a, 306b).Biasing/the control circuit 52 It can be configured as based on such as control signal input 304, biasing and/or control work(are provided PA50a, 50b in known manner Energy.In certain embodiments, which can implement with 302 separated chip of PA chips.In some realities Apply in example, which can implement in the chip identical with PA chips 302.

The output of first PA50a is shown as being connected to the first matching network 60a.Similar, the output quilt of the 2nd PA50b It is shown connected to the second matching network 60b.

The output of first matching network 60a is shown as being connected to first with one or more features described herein Adjust circuit 102a.Similar, the output of the second matching network 60b is shown as being connected to described herein one or more The second of a feature adjusts circuit 102b.In certain embodiments, adjusted with first and second each in circuit 102a, 102b A associated inductance can be by separated component (such as inductor of surface installation), one or more conducting paths or some Combine to provide.In the embodiment that capacitance is connected with above-mentioned inductance, the capacitance can (such as surface be pacified by such as separated component The capacitor of dress) provide.

The output of first adjusting circuit 102a is shown as being connected to work(before output node (RFOUT_A) is transferred into Rate coupled section 70a.Similar, the output of the second adjusting circuit 102b is shown as being transferred into output node (RFOUT_B) Power coupled section 70b is connected to before.In the example shown, the first and second power coupled sections 70a, 70b are shown as It is that daisy chain links together between coupler input 310 and output 312.

As described here, the above-mentioned daisy chain between power coupled section can cause a signal path (such as low-frequency band Path) for example, by falling into one or more operational frequency bands associated with another signal path (such as highband path) Ripple responds and influences another signal path (such as highband path).In some cases, opposite shadow may be not present Ring (such as high frequency band couples influence low-frequency band by daisy chain), or the opposite influence there are relatively small value, or the phase Anti- influence is present in less care or unconcerned frequency range (such as in the frequency range not used by any frequency band). Here in the background of the exemplary high frequency band, the notch response associated with the high frequency band is usually located at much higher frequency (such as 5 between 6GHz), it does not influence other operational frequency bands usually.Therefore, in this case, the first signal path (such as Highband path) can be with or without adjusting circuit (102a).It is to be understood, therefore, that for multiple letters as described herein Number some or all of path, these paths can include one or more adjusting circuits.

In the exemplary module 300 of Figure 15, various parts described herein can be on package substrate 320 or the encapsulation base It is equipped with or is formed in plate 320.In certain embodiments, package substrate 320 may include laminated substrate.In certain embodiments, mould Block 300 may also include one or more encapsulating structures, for example to provide the protection of module 300 and contribute to the more appearance of module 300 Easy processing.It is base that the encapsulating structure, which may include to be formed on package substrate 320 and be cut size (dimensioned), The rubber-coating module (overmold) of the various circuits of this sealing and component.

In some implementations, the equipment with one or more features described herein and/or circuit can be included in for example In the RF equipment of wireless device.The equipment and/or circuit can be in the form of modules described herein or with they some The form of combination is directly realized in a wireless device.In certain embodiments, such wireless device may include such as honeycomb electricity Words, smart phone, with or without the hand-held wireless device of telephony feature, wireless flat etc..

Figure 16 A and 16B schematically show the example wireless with one or more beneficial aspects described herein and set Standby 400.The example shown in Figure 16 A is configured for frequency division duplex (FDD), and the example shown in Figure 16 B is used for time division duplex (TDD) configure.

In each in two exemplary wireless devices of Figure 16 A and 16B, PAS0, its output and input match circuit (60), adjusting circuit 102 and termination power 70 can be as realized in the module 300 described in Figure 15.PA50 can be from The transceiver 410 that the mode known is configured and operated receives its respective RF signal.Transceiver 410 can be configured to produce to be amplified With the RF signals of transmission, and the signal that receives is handled.Transceiver 410 is shown as interacting with baseband subsystems 408, The baseband subsystems 408 be configured to provide for suitable for user data and/or voice signal and suitable for transceiver 410 RF signals it Between conversion.Transceiver 410 is also depicted as being connected to power management components 406, it is configured as management operation wireless device Power.The operation of the also controllable baseband subsystems 408 of the power management and module 300.

Baseband subsystems 408 are shown as being connected to user interface 402, in order to provide a user and received from user Voice and/or the various of data output and input.Baseband subsystems 408 can also be connected to memory 404, the memory 404 are configured to storage data and/or instruction in order to operate wireless device and/or provide the storage of information to the user.

In the exemplary wireless device 400 of Figure 16 A, the output of module 300 be shown pass through its respective duplexer 80a, 80b and band selection switches 414 are sent to antenna 416.Band selection switches 414 can include for example single-pole double throw (such as SPDT) switch, to allow the selection of operational frequency bands.Although being described under the background that two frequency bands of module 300 export, It will be understood that the quantity of operational frequency bands can be different.In the configuration comprising multiple frequency bands, which can have There is such as SPMT (hilted broadsword is thrown more) configuration.

In the example of Figure 16 A, each duplexer 80 can allow substantially simultaneously to hold using community antenna (such as 416) Row sends and receives operation.In Figure 16 A, received signal is shown as being sent to " Rx " path (not shown), it can be wrapped Include such as low noise amplifier (LNA).

In the exemplary wireless device 400 of Figure 16 B, time division duplex (TDD) function can be by being connected to two of module 300 Low-pass filter (LPF) 82a, 82b of example output promotes.The path for leaving wave filter 82a, 82b is shown as via opening Close 414 and be connected to antenna.In TDD configurations, one or more Rx paths can be come out from switch 414.Therefore, 414 are switched It can be switched as band selector (such as between high frequency band described herein and low-frequency band) and Tx/Rx (TR).

In the exemplary wireless device 400 shown in Figure 16 A and Figure 16 B, exemplary module 300 be shown as including PA (50a, 50b) and its respective match circuit (60a, 60b), adjust circuit (102a, 102b) and coupled section (70a, 70b).In some realities Apply in example, the module 300 of Figure 16 A may include duplexer 80a, 80b and switch some or all of 414.In some embodiments In, the module 300 of Figure 16 B may include wave filter 82a, 82b and switch some or all of 414.

One or more features described herein can be used in many other wireless device configurations.For example, wireless device is not It is multiband equipment to need.In another example, wireless device can include the extra antenna of such as diversity antenna, and The extra connection features of such as Wi-Fi, bluetooth and GPS.

This, which is in the background of E-UTRA (the general land wireless access of evolution) operational frequency bands, describes various examples.Should Frequency band may include the frequency band listed in table 3.

Operational frequency bands	Frequency band (MHz)
		1	2,100
2	1,900
		3	1,800
4	1,700
		5	850
6	800
		7	2,600
8	900
		9	1,700
10	1,700
		11	1,500
12	700
		13	700
14	700

17	700
		18	800
19	800
		20	800
21	1,500
		22	3,500
23	2,000
		24	1,600
25	1,900
		26	850
27	800
		28	700
29	800
		30	2,300
33	2,100
		34	2,100
35	1,900
		36	1,900
37	1,900
		38	2,600
39	1,900
		40	2,300
41	2,500
		42	3,500
43	3,700
		44	700

Table 3

It will be understood that each example bands listed in table 3 can include one or more frequency ranges.For example, FDD frequencies Band can be associated with transmission frequency scope and receives frequency scope.For TDD frequency bands, given frequency range can be convenient Send and receive both operations.It will be understood that the one or more features of the disclosure can be realized in other frequency bands identify convention.

Unless context clearly requires otherwise, and through entire disclosure and claim, word " comprising " and "comprising" Etc. the implication that should be interpreted that inclusive, and the implication of nonexcludability or exhaustive；That is, be construed to " including it is but unlimited In " implication.As usually used here, word " coupling " refers to be directly connected to or by one or more intermediary element Two or more elements of connection.In addition, when used in this application, word " herein ", " above ", " following " and similar meaning The word of think of should refer to the application entirety, and not this Applicant's Abstract graph any specific part.Such as context permission, specific implementation above It is in mode, using singular or plural word can also respectively include plural number or odd number.Word "or" is with reference to two or more During the list of item, which covers the following explanation of whole of the word：Any item in list, whole items and row in list Any combinations of item in table.

It is that detailed description above the embodiment of the present invention is not intended to be exhaustive or limit the invention to public above The precise forms opened.Such as various equivalent modifications it will be understood that, although the present invention is described above for illustrative purposes Specific embodiment and example, various equivalent modifications are possible within the scope of the invention.Although for example, it is in given order Now processing or square frame, alternative embodiment can carry out the routine with the step of different order, or use with different order The system of square frame, and can delete, move, add, segment, combine and/or change some processing or square frame.Can be with various Different modes realize these processing or square frame in each.Although in addition, processing or square frame be shown as serially carrying out sometimes, Alternatively, these processing or square frame can carry out parallel, or can be carried out in different time.

The teaching of invention provided herein can be applied to other systems, be not necessarily system described above.Can be with With reference to the element of various embodiments described above and action to provide further embodiment.

Although having been described for certain embodiments of the present invention, these embodiments are only presented by example, and unexpectedly Figure limitation the scope of the present disclosure.In fact, new method described herein and system can be implemented in the form of various other；In addition, Various omissions, replacement and the change in the form of method and system described herein can be made, without departing from the essence of the disclosure God.Appended claims and its equivalent are intended to this form or the modification that covering will be fallen into the scope of the present disclosure and spirit.

Claims (23)

1. a kind of radio frequency (RF) circuit, including：

First amplification path, includes the output matching network of the first RF signals for first band；

Second amplification path, includes the output matching network of the 2nd RF signals for second band；

Power detector, comprising first coupler of the detection along the power of the first amplification path is configured to, and is configured to examine The second coupler along the power of the second amplification path is surveyed, first coupler and second coupler are embodied as daisy chain and match somebody with somebody Put；And

Adjust circuit, the electricity realized between the second output matching network and the second coupler of second amplification path Sense, the adjusting circuit are configured to ring and at least part as second coupler caused by frequency associated with the first amplification path Feature is answered to be removed from first band.

2. RF circuits as claimed in claim 1, wherein the first band and second band are high frequency band relative to each other respectively And low-frequency band.

3. RF circuits as claimed in claim 2, wherein each in first amplification path and the second amplification path includes work( Rate amplifier (PA), the output of the power amplifier are couple to corresponding output matching network.

4. RF circuits as claimed in claim 2, wherein the inductance includes inductor.

5. RF circuits as claimed in claim 2, wherein the adjusting circuit further includes the capacitance being connected in series with the inductance.

6. RF circuits as claimed in claim 5, wherein the capacitance includes capacitor.

7. RF circuits as claimed in claim 2, wherein second output matching network includes matching inductance and is connected to matching The shunt capacitance of the output of inductance.

8. RF circuits as claimed in claim 2, wherein the frequency-response characteristic includes the trap in power spectrum, its cause along The insertion loss of first amplification path.

9. RF circuits as claimed in claim 2, wherein the first band includes E-UTRA frequency bands B7, B38 or B40.

10. RF circuits as claimed in claim 9, wherein the second band includes E-UTRA frequency bands B18 or B8.

11. RF circuits as claimed in claim 2, wherein the frequency-response characteristic is moved to the operation phase in the first amplification path Between untapped frequency range.

12. such as RF circuits of claim 11, wherein the frequency range is included in the frequency between E-UTRA frequency bands B8 and B4 Scope.

13. RF circuits as claimed in claim 2, wherein the adjusting circuit be configured to the frequency-response characteristic being moved to it is lower Frequency.

14. such as the RF circuits of claim 13, wherein the lower frequency that is moved to of the frequency-response characteristic with the first frequency Between the frequency that band and second band are associated.

15. a kind of radio frequency (RF) module, including：

Package substrate, is configured to accommodate multiple components；And

Realize RF circuits on the package substrate, which includes with the defeated of the first RF signals for first band Go out the first amplification path of matching network, and the output matching network with the 2nd RF signals for second band second is put Big path, the RF circuits also include power detector, which, which has, is configured to detection along the first amplification path First coupler of power, and it is configured to second coupler of the detection along the power of the second amplification path, first coupler It is embodied as daisy chain configuration with second coupler, which also includes with the second output in second amplification path The adjusting circuit for the inductance realized between matching network and the second coupler, the adjusting circuit be configured to by with the first amplification path The associated and at least partly frequency-response characteristic as caused by the second coupler is removed from first band.

16. such as RF modules of claim 15, wherein the RF modules are power amplifier module, so that first amplification path The output that the output and second amplification path that footpath includes the first power amplifier (PA) include the 2nd PA.

17. such as RF modules of claim 16, wherein first power amplifier and the second power amplifier are both half Realized on conductor chip.

18. a kind of radio frequency (RF) equipment, including：

Transceiver, is configured to processing RF signals；

With the antenna of the transceiver communications, which is the transmission of the RF signals of convenient amplification；And

Power amplifier (PA) module of the transceiver is connected to, which is configured to the RF signals of generation amplification, the PA moulds Block includes the first amplification path of the output matching network with the first RF signals for first band, and with for second Second amplification path of the output matching network of the 2nd RF signals of frequency band, the PA modules also include power detector, the power Detector has the first coupler for being configured to detection along the power of the first amplification path, and is configured to detection and is put along second Second coupler of the power in big path, first coupler and second coupler are embodied as daisy chain configuration, the PA modules Also include the tune with the inductance realized between the second output matching network and the second coupler of second amplification path Economize on electricity road, the adjusting circuit are configured to and at least part associated with the first amplification path frequency as caused by the second coupler Rate response characteristic is removed from first band.

19. such as the RF equipment of claim 18, the wherein RF equipment includes wireless device.

20. a kind of radio frequency (RF) circuit, including：

First circuit, has the frequency response for including the feature in selected frequency range；

Second circuit, is coupled to first circuit, the daisy chain power-sensing circuit is matched somebody with somebody by daisy chain power-sensing circuit The power of the first circuit of detection and second circuit is set to, so that feature at least a portion of the frequency response is attributed to this Coupling；And

Circuit is adjusted, is configured to remove this feature from selected frequency range.

21. such as RF circuits of claim 20, wherein the feature is moved to lower frequency.

22. one kind is used for the method for operating radio frequency (RF) equipment, this method includes：

Along the first path in daisy chain configuration and the power in the second path, which is configured as in the first frequency for detection Band the first RF signals of transmission, second path are configured as transmitting the 2nd RF signals in second band；And

The second path is adjusted, by and at least part associated with first path frequency as caused by the power detection in the second path Rate response characteristic is removed from first band.

23. one kind is used for the method for operating radio frequency (RF) equipment, this method includes：

First circuit is coupled by daisy chain power-sensing circuit and second circuit, the daisy chain power-sensing circuit are configured to The power of the first circuit and second circuit is detected, which there is the frequency comprising the feature in selected frequency range to ring Should, this feature at least a portion of the frequency response is attributed to the coupling；And

The second circuit is adjusted so that this feature to be removed from selected frequency range.