CN204795056U - Standing wave detection device of multiplefrequency mixer - Google Patents
Standing wave detection device of multiplefrequency mixer Download PDFInfo
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- CN204795056U CN204795056U CN201520417483.5U CN201520417483U CN204795056U CN 204795056 U CN204795056 U CN 204795056U CN 201520417483 U CN201520417483 U CN 201520417483U CN 204795056 U CN204795056 U CN 204795056U
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Abstract
The utility model relates to a standing wave detection device of multiplefrequency mixer, its device is including first singlechip, first- second detector, first- change over switch, the figure second unidirectional coupler that signal input link way is the same with the first unidirectional coupler that signal input link way is the same, a narrow bandpass filter and the figure and the multiplefrequency mixer of multiplefrequency mixer, first unidirectional coupler is established ties in the signal input of multiplefrequency mixer link, and the second unidirectional coupler is established ties in the signal output link, first- second detector connects first singlechip respectively, and first detector still connects a change over switch, second detector and still connects the 2nd change over switch, and a change over switch still connects first unidirectional coupler, and the 2nd change over switch still connects each narrow bandpass filter respectively, and each narrow bandpass filter still connects the 3rd change over switch, and the 3rd change over switch still connects the second unidirectional coupler, adopts the utility model discloses a scheme can improve the accuracy that the standing wave detected.
Description
Technical field
The utility model relates to communication technical field, particularly relates to a kind of standing wave detecting device of multiplefrequency mixer.
Background technology
Multi-system access platform (POI, PointOfInterface), as a kind of effective mobile communication signal access device, is widely used in the quorum sensing inhibitor of subway, tunnel, large stadium.Along with deepening continuously of Joint construction and sharing theory, POI also becomes base station and carries out one of the means on signal conjunction road.POI, as the key equipment in mobile communication link, once break down, will cause the interruption of whole communication link, cause great impact, and therefore, the running status how monitoring POI equipment becomes the focus of user's concern.
POI is essentially passive conjunction pipeline equipment, and to the monitoring of this type of equipment state, the most general, the most effective mode is to its port, and the standing-wave ratio of especially closing road port is monitored.Conventional art means are general as shown in Figure 1, road port series connection broadband bidirectional coupler is closed in multiple-frequency signal, extract input power and reflection power respectively, send into wave detector, RF signal power is converted into direct current signal, then carry out computing by single-chip microcomputer or simple calculations amplifying circuit, draw the standing-wave ratio of this port.In this kind of mode, the signal that wave detector detects is the superposition value of multichannel input signal power above, due to the function that standing-wave ratio is frequency, namely standing-wave ratio changes with the change of frequency, above-mentioned means cannot be distinguished signal frequency, therefore standing wave accuracy of detection is extremely low, often can not reach requirement equipment being carried out to effective monitoring, and alarm or not alarm by mistake usually occur.
For simple three system POI equipment, the signal frequency range supposing this POI tri-input ports is GSM900, DCS1800 and LTE2600, power is respectively 43dBm (20W), 46dBm (40W) and 37dBm (5W), close the actual value of road port standing-wave ratio in these three frequency ranges and be respectively 1.4,1.3 and 1.9, be converted into return loss and be 15.5dB, 18dB and 10dB.Apply above-mentioned means and carry out standing wave detection, the detected value calculating process drawn is as follows:
Input power P
f=(20+40+5) W=48.1dBm
Reflection power P
f=(46-15.5) dBm+ (46-18) dBm+ (37-10) dBm
＝(0.56+0.63+0.50)W＝32.3dBm
Return loss RL=(P
f-P
r)=15.8dB
Be scaled voltage standing wave ratio
VSWR＝1.39
If standing wave alarming threshold is 1.5, now standing wave detected value is 1.39, and supervisory control system can not alarm, and actual standing wave maximum reaches 1.9.
Utility model content
The purpose of this utility model is the standing wave detecting device providing a kind of multiplefrequency mixer, can improve the accuracy that standing wave detects.
The purpose of this utility model is achieved through the following technical solutions:
A standing wave detecting device for multiplefrequency mixer, comprises the first narrow band filter that the first single-chip microcomputer, first detector, second detector, the first diverter switch, the second diverter switch, the 3rd diverter switch, identical second unidirectional coupler of signal output link way of the first unidirectional coupler, number and multiplefrequency mixer that number is identical with the signal input link way of multiplefrequency mixer and number are identical with described signal input link way;
Each described first unidirectional coupler is series in different described signal input links respectively, and described second unidirectional coupler is series in described signal output link;
Described first detector, described second detector connect described first single-chip microcomputer respectively, described first detector also connects described first diverter switch, described second detector also connects described second diverter switch, described first diverter switch also connects described first unidirectional coupler respectively, described second diverter switch also connects each described first narrow band filter respectively, each described first narrow band filter is also connected with described 3rd diverter switch respectively, and described 3rd diverter switch also connects described second unidirectional coupler.
A standing wave detecting device for multiplefrequency mixer, comprises the 3rd all identical with the way of the signal input link of multiplefrequency mixer unidirectional coupler of second singlechip, third detector, the 4th wave detector, the 4th diverter switch, the 5th diverter switch and number, the 4th unidirectional coupler, the second narrow band filter;
Each described 3rd unidirectional coupler is series in the different described signal input link of described multiplefrequency mixer respectively, and each described 4th unidirectional coupler is all series in the signal output link of described multiplefrequency mixer;
Described third detector, described 4th wave detector connect described second singlechip respectively, described third detector also connects described 4th diverter switch, described 4th wave detector also connects described 5th diverter switch, described 4th diverter switch also connects each described 3rd unidirectional coupler respectively, described 5th diverter switch also connects each described second narrow band filter respectively, and each second narrow band filter also connects from different described 4th unidirectional couplers respectively.
A kind of standing wave detecting device of multiplefrequency mixer, comprise the 3rd single-chip microcomputer, the 6th diverter switch, also comprise identical the 6th unidirectional coupler of signal output link way of the 5th all identical with the signal input link way of multiplefrequency mixer unidirectional coupler of number, the 5th wave detector, the 6th wave detector, the 3rd narrow band filter and number and multiplefrequency mixer;
Each described 5th unidirectional coupler is series in different described signal input links respectively, and described 6th unidirectional coupler is series in described signal output link;
Each described 5th wave detector, each described 6th wave detector connect described 3rd single-chip microcomputer respectively, each described 5th wave detector also connects each described 5th unidirectional coupler respectively, each described 6th wave detector also connects different described 3rd narrow band filters respectively, each described 3rd narrow band filter is also connected with described 6th diverter switch respectively, and described 6th diverter switch also connects described 6th unidirectional coupler.
A standing wave detecting device for multiplefrequency mixer, comprises the 4th single-chip microcomputer and all identical with the way of the signal input link of multiplefrequency mixer the 7th wave detector, the 8th wave detector, the 7th unidirectional coupler, the 8th unidirectional coupler, the 4th narrow band filter of number;
Each described 7th unidirectional coupler is series in the different described signal input link of described multiplefrequency mixer respectively, and each described 8th unidirectional coupler is all series in the signal output link of described multiplefrequency mixer;
Each described 7th wave detector, each described 8th wave detector connect described 4th single-chip microcomputer respectively, each described 7th wave detector also connects different described 7th unidirectional couplers respectively, each described 8th wave detector also connects different described 4th narrow band filters respectively, and each described 4th narrow band filter also connects different described 8th unidirectional couplers respectively.
A standing wave detecting device for multiplefrequency mixer, comprises identical the tenth unidirectional coupler of the way of signal output link of the 5th single-chip microcomputer, the 9th wave detector, the tenth wave detector, the 7th diverter switch, the 8th diverter switch, arrowband mixer, the 9th unidirectional coupler, number and multiplefrequency mixer that number is identical with the way of the signal input link of multiplefrequency mixer;
Each described 9th unidirectional coupler is series in the different described signal input link of described multiplefrequency mixer respectively, and described tenth unidirectional coupler is series in the signal output link of described multiplefrequency mixer;
Described 9th wave detector, described tenth wave detector connect described 5th single-chip microcomputer respectively, described 9th wave detector also connects described 7th diverter switch, described tenth wave detector also connects described 8th diverter switch, described 7th changes switch also connects each described 9th unidirectional coupler respectively, described 8th diverter switch also connects described arrowband mixer, and described arrowband mixer also connects described tenth unidirectional coupler.
According to the standing wave detecting device of the multiplefrequency mixer that above-mentioned the utility model provides, due to each signal input link at multiplefrequency mixer, unidirectional coupler is in series with respectively in output link, and the unidirectional coupler be connected on output link is connected with narrow band filter or arrowband mixer, therefore, multifrequency can be closed band signal of having a lot of social connections and be split as multiple narrow band signal, and carry out power detection through wave detector, therefore, can be the standing wave detection pull-in frequency information of the conjunction road port of multiplefrequency mixer, the accuracy that standing wave detects can be improved, simultaneously, due to employing is unidirectional coupler, relative to bidirectional coupler, significantly can reduce the difficulty that coupler realizes high directivity, by the lifting of coupler directivity, the accuracy that standing wave detects can be improved further.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the standing wave monitoring device of traditional multiplefrequency mixer;
Fig. 2 is the structural representation of the standing wave monitoring device embodiment one of multiplefrequency mixer of the present utility model;
Fig. 3 is the structural representation of the standing wave monitoring device embodiment two of multiplefrequency mixer of the present utility model;
Fig. 4 is the structural representation of the standing wave monitoring device embodiment three of multiplefrequency mixer of the present utility model;
Fig. 5 is the structural representation of the standing wave monitoring device embodiment four of multiplefrequency mixer of the present utility model;
Fig. 6 is the structural representation of the standing wave monitoring device embodiment five of multiplefrequency mixer of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that embodiment described herein only in order to explain the utility model, do not limit protection range of the present utility model.
It should be noted that, be all comprise three road signal input links for multiplefrequency mixer to be described below in an example, but this does not form the restriction to the utility model scheme.
Embodiment one
Shown in Figure 2, be the structural representation of the standing wave detecting device embodiment one of multiplefrequency mixer of the present utility model.As shown in Figure 2, the standing wave detecting device of the multiplefrequency mixer in this embodiment one, comprise the first single-chip microcomputer SCM1, first detector D101, second detector D102, first diverter switch S101, second diverter switch S102 and the 3rd diverter switch S103, first unidirectional coupler U105 ~ U107 that number is identical with the signal input link way of multiplefrequency mixer U101, the second unidirectional coupler U108 that number is identical with the signal output link way of multiplefrequency mixer U101 and the number first narrow band filter U102 ~ U104 identical with described signal input link way, here, because signal input link way is three in the present embodiment, therefore, the number of first unidirectional coupler U105 ~ U107 is three, the number of first narrow band filter U102 ~ U104 is three, signal input link way is one, therefore, the number of the second unidirectional coupler U108 is one, but this does not form the restriction to the utility model scheme,
Each first unidirectional coupler U105 ~ U107 is series in the different signal input link of multiplefrequency mixer U101 respectively, and the second unidirectional coupler U108 is series in the signal output link of multiplefrequency mixer U101;
First detector D101, second detector D102 connect the first single-chip microcomputer SCM1 respectively, first detector D101 also connects the first diverter switch S101, second detector D102 also connects the second diverter switch S102, first diverter switch S101 also connects first unidirectional coupler U105 ~ U107 respectively, second diverter switch also connects each first narrow band filter U102 ~ U104 respectively, each first narrow band filter U102 ~ U104 is also connected with the 3rd diverter switch S103 respectively, and the 3rd diverter switch S103 also connects the second unidirectional coupler U108.
In the present embodiment one, the signal inputted in three road signal input links is respectively GSM900, DCS1800, LTE2600, but this does not form the restriction to the utility model scheme, the frequency range of the input signal in the band connection frequency Yu Zhe tri-road signal input link of first narrow band filter U102 ~ U104 is corresponding, such as, the band connection frequency of the first narrow band filter U102 is consistent with GSM900, the band connection frequency of the first narrow band filter U103 is consistent with DCS1800, and the band connection frequency of the first narrow band filter U104 is consistent with LTE2600.
When specific implementation, after the standing wave detecting device of multiplefrequency mixer of the present utility model comes into operation, first unidirectional coupler U105 ~ U107 is respectively used to the coupling of input power, deduct the insertion loss of multiplefrequency mixer U101, the single system input power of closing road port can be conversed, by the first diverter switch S101 time division multiplexing first detector D101, can reduce costs and save the resource of the first single-chip microcomputer SCM1, second unidirectional coupler U108 is used for transmitting power coupling, the reflected signal of its coupling, through the second diverter switch S102, 3rd diverter switch D103, the path that each first narrow band filter U102 ~ U104 forms carries out He Ne laser, the reflection power of single system can be extracted respectively, the first single-chip microcomputer SCM1 is fed back into by after second detector D102 detection, in actual applications, for improving accuracy of detection, generally need the second diverter switch S102, the insertion loss of the 3rd diverter switch D103 and each first narrow band filter U102 ~ U104 carries out pre-calibration, first single-chip microcomputer SCM1 is according to the power of three groups of input signals and corresponding reflected signal, calculate the standing-wave ratio of each input band respectively, maximum and alarming threshold are contrasted, thus realize standing wave warning accurately, in addition, for improving the real-time of detection further, can also to the first diverter switch S101, second diverter switch S102 and the 3rd diverter switch S103 synchronously processes.
Consider that multiplefrequency mixer is often applicable to radiofrequency signal, therefore, the first diverter switch S101, the second diverter switch S102 and the 3rd diverter switch S103 General Requirements are radio-frequency (RF) switch.
Embodiment two
Shown in Figure 3, be the structural representation of the standing wave detecting device embodiment two of multiplefrequency mixer of the present utility model.As shown in Figure 3, the standing wave detecting device of the multiplefrequency mixer in this embodiment two, comprise second singlechip SCM2, third detector D201, 4th wave detector D202, 4th diverter switch S201, the 3rd unidirectional coupler U205 ~ U207 that 5th diverter switch S202 and number are all identical with the way of the signal input link of multiplefrequency mixer U201, 4th unidirectional coupler U208 ~ U210, 3rd narrow band filter U202 ~ U204, here, because the way of signal input link is in the present embodiment three, therefore, 3rd unidirectional coupler U205 ~ U207, 4th unidirectional coupler U208 ~ U210, the number of the 3rd narrow band filter U202 ~ U204 is three,
Each 3rd unidirectional coupler U205 ~ U207 is series in the different signal input link of multiplefrequency mixer U201 respectively, each 4th unidirectional coupler U208 ~ U210 is all series in the signal output link of multiplefrequency mixer U201, wherein, as described in Figure 3,3rd unidirectional coupler U205 is series in signal input link corresponding to GSM900,3rd unidirectional coupler U206 is series in signal input link corresponding to DCS1800, and the 3rd unidirectional coupler U207 is series in signal input link corresponding to LTE2600;
Third detector D201, 4th wave detector D202 connects second singlechip SCM2 respectively, third detector D201 also connects the 4th diverter switch S201, 4th wave detector D202 also connects the 5th diverter switch S202, 4th diverter switch S201 also connects each 3rd unidirectional coupler U205 ~ U207 respectively, 5th diverter switch S202 also connects each 3rd narrow band filter U202 ~ U207 respectively, each 3rd narrow band filter also respectively from the 4th different unidirectional coupler U208 ~ U210, such as, as shown in Figure 3, 3rd narrow band filter U202 connects the 4th unidirectional coupler U208, 3rd narrow band filter U203 connects the 4th unidirectional coupler U209, 3rd narrow band filter U204 connects the 4th unidirectional coupler U210.
The frequency range of the input signal in the band connection frequency Yu Zhe tri-road signal input link of the 3rd narrow band filter U202 ~ U204 is corresponding, such as, the band connection frequency of the 3rd narrow band filter U202 is consistent with GSM900, the band connection frequency of the 3rd narrow band filter U203 is consistent with DCS1800, and the band connection frequency of the 3rd narrow band filter U204 is consistent with LTE2600.
Consider that multiplefrequency mixer U201 is often applicable to radiofrequency signal, therefore, the 4th diverter switch S201, the 5th diverter switch S202 General Requirements are radio-frequency (RF) switch.
When specific implementation, after the standing wave detecting device of multiplefrequency mixer of the present utility model comes into operation, second unidirectional coupler U205 ~ U207 is respectively used to the coupling of input power, deduct the insertion loss of multiplefrequency mixer U201, the single system input power of closing road port can be conversed, by the 4th diverter switch S201 time division multiplexing third detector D201, can reduce costs and save the resource of second singlechip SCM2, 3rd unidirectional coupler U208 ~ U210 is used for transmitting power coupling, the reflected signal of its coupling, through the 5th diverter switch S202, the path that each 3rd narrow band filter U202 ~ U204 forms carries out He Ne laser, the reflection power of single system can be extracted respectively, second singlechip SCM2 is fed back into by after the 4th wave detector D202 detection, in actual applications, for improving accuracy of detection, generally need the 5th diverter switch S202, the insertion loss of each 3rd narrow band filter U202 ~ U204 carries out pre-calibration, second singlechip SCM2 is according to the power of three groups of input signals and corresponding reflected signal, calculate the standing-wave ratio of each input band respectively, maximum and alarming threshold are contrasted, thus realize standing wave warning accurately, in addition, for improving the real-time of detection further, can also to the 4th diverter switch S201, 5th diverter switch S202 synchronously processes.
Identical or similar with embodiment one of other technologies feature in the present embodiment, does not repeat them here.
Embodiment three
Shown in Figure 4, be the structural representation of the standing wave detecting device embodiment three of multiplefrequency mixer of the present utility model.As shown in Figure 4, the standing wave detecting device of the multiplefrequency mixer in this embodiment three, comprises the 5th wave detector D301 ~ D303, the 6th wave detector D305 ~ D306, the 3rd narrow band filter U302 ~ U304 that the 3rd single-chip microcomputer SCM3, the 6th diverter switch S301, the 5th unidirectional coupler U305 ~ U307 of number and the signal input link way many of multiplefrequency mixer U301, identical the 5th unidirectional coupler U306 of signal output link way of number and multiplefrequency mixer U301 and number are all identical with described signal input link way;
5th unidirectional coupler U305 ~ U307 is series in different described signal input links respectively, and the 6th unidirectional coupler U308 is series in described signal output link;
Each 5th wave detector D301 ~ D303, each 6th wave detector D305 ~ D306 connects the 3rd single-chip microcomputer respectively, each 5th wave detector D301 ~ D303 also connects the 5th unidirectional coupler U305 ~ U307 respectively, such as, as shown in Figure 3, 5th wave detector D301 connects the 5th unidirectional coupler U305, 5th wave detector D302 connects the 5th unidirectional coupler U306, 5th wave detector D303 connects the 5th unidirectional coupler U306, each 6th wave detector D305 ~ D306 also connects the 3rd different narrow band filter U302 ~ U304 respectively, such as, as shown in Figure 3, 6th wave detector D305 connects the 3rd narrow band filter U302, 6th wave detector D305 connects the 3rd narrow band filter U303, 6th wave detector D306 connects the 3rd narrow band filter U304, each 3rd narrow band filter U302 ~ U304 is also connected with the 6th diverter switch S301 respectively, 6th diverter switch S301 also connects the 4th unidirectional coupler U308 be series in signal output link.
The frequency range of the input signal in the band connection frequency Yu Zhe tri-road signal input link of the 3rd narrow band filter U302 ~ U304 is corresponding, such as, the band connection frequency of the 3rd narrow band filter U302 is consistent with GSM900, the band connection frequency of the 3rd narrow band filter U303 is consistent with DCS1800, and the band connection frequency of the 3rd narrow band filter U304 is consistent with LTE2600.
Consider that multiplefrequency mixer U301 is often applicable to radiofrequency signal, therefore, the 6th diverter switch S301 General Requirements is radio-frequency (RF) switch.
When specific implementation, after the standing wave detecting device of multiplefrequency mixer of the present utility model comes into operation, 4th unidirectional coupler U305 ~ U307 is respectively used to the coupling of input power, deduct the insertion loss of multiplefrequency mixer U301, the single system input power of closing road port can be conversed, 4th unidirectional coupler U308 is used for transmitting power coupling, the reflected signal of its coupling, through the 6th diverter switch S301, the path that each 3rd narrow band filter U302 ~ U304 forms carries out He Ne laser, the reflection power of single system can be extracted respectively, the 3rd single-chip microcomputer SCM3 is fed back into by after the 6th wave detector D305 ~ D306 detection, in actual applications, for improving accuracy of detection, generally need the 6th diverter switch S301, the insertion loss of each 3rd narrow band filter U302 ~ U304 carries out pre-calibration, 3rd single-chip microcomputer SCM3 is according to the power of three groups of input signals and corresponding reflected signal, calculate the standing-wave ratio of each input band respectively, maximum and alarming threshold are contrasted, thus realize standing wave warning accurately.
Scheme in the present embodiment three, relative to scheme in embodiment one, embodiment two, cost is higher and need more mcu resource, but owing to only needing a diverter switch (the 6th diverter switch S301), the real-time of detection is stronger.
Identical or similar with embodiment one of other technologies feature in the present embodiment, does not repeat them here.
Embodiment four
Shown in Figure 5, be the structural representation of the standing wave detecting device embodiment four of multiplefrequency mixer of the present utility model.As shown in Figure 5, the standing wave detecting device of the multiplefrequency mixer in this embodiment four, comprises the 4th single-chip microcomputer SCM4 and all identical with the way of the signal input link of multiplefrequency mixer U401 the 7th wave detector D401 ~ D403, the 8th wave detector D404 ~ D406, the 7th unidirectional coupler U405 ~ U407, the 8th unidirectional coupler U408 ~ U410, the 3rd narrow band filter U402 ~ U404 of number;
Each 7th unidirectional coupler U405 ~ U407 is series in the different signal input link of multiplefrequency mixer U401 respectively, wherein, as described in Figure 5,7th unidirectional coupler U405 is series in signal input link corresponding to GSM900,7th unidirectional coupler U406 is series in signal input link corresponding to DCS1800,7th unidirectional coupler U407 is series in signal input link corresponding to LTE2600, and each 8th unidirectional coupler U408 ~ U410 is all series in the signal output link of multiplefrequency mixer U401;
Each 7th wave detector D401 ~ D403, 8th wave detector D404 ~ D406 connects the 4th single-chip microcomputer respectively, each 7th wave detector D401 ~ D403 also connects the 7th different unidirectional coupler U405 ~ U407 respectively, wherein, as shown in Figure 5, 7th wave detector D401 connects the 7th unidirectional coupler U405, 7th wave detector D402 connects the 7th unidirectional coupler U403, 7th wave detector D403 connects the 7th unidirectional coupler U407, each 8th wave detector D404 ~ D406 also connects the 3rd different narrow band filter U402 ~ U404 respectively, wherein, as shown in Figure 5, 8th wave detector D404 connects the 3rd narrow band filter U402, 8th wave detector D405 connects the 3rd narrow band filter U403, 8th wave detector D406 connects the 3rd narrow band filter U404, each 3rd narrow band filter U402 ~ U404 also connects the 8th different unidirectional coupler U408 ~ U410 respectively, wherein, as shown in Figure 5, 3rd narrow band filter U402 connects the 8th unidirectional coupler U408, 3rd narrow band filter U403 connects the 8th unidirectional coupler U409, 3rd narrow band filter U404 connects the 8th unidirectional coupler U410.
The frequency range of the input signal in the band connection frequency Yu Zhe tri-road signal input link of the 3rd narrow band filter U402 ~ U404 is corresponding, such as, the band connection frequency of the 3rd narrow band filter U402 is consistent with GSM900, the band connection frequency of the 3rd narrow band filter U403 is consistent with DCS1800, and the band connection frequency of the 3rd narrow band filter U404 is consistent with LTE2600.
When specific implementation, after the standing wave detecting device of multiplefrequency mixer of the present utility model comes into operation, 7th unidirectional coupler U405 ~ U407 is respectively used to the coupling of input power, deduct the insertion loss of multiplefrequency mixer U401, the single system input power of closing road port can be conversed, 8th unidirectional coupler U408 ~ U410 is used for transmitting power coupling, the reflected signal of its coupling, the path formed through each 3rd narrow band filter U302 ~ U304 carries out He Ne laser, the reflection power of single system can be extracted respectively, the 4th single-chip microcomputer SCM4 is fed back into by after the 8th wave detector D405 ~ D406 detection, in actual applications, for improving accuracy of detection, generally need to carry out pre-calibration to the insertion loss of the 3rd narrow band filter U302 ~ U304, 4th single-chip microcomputer SCM4 is according to the power of three groups of input signals and corresponding reflected signal, calculate the standing-wave ratio of each input band respectively, maximum and alarming threshold are contrasted, thus realize standing wave warning accurately.
Scheme in the present embodiment four, relative to scheme in embodiment one, embodiment two, embodiment three, cost is higher, but owing to not needing diverter switch, the real-time of detection is comparatively strong, and can realize the monitoring of the standing-wave ratio to each input band simultaneously.
Identical or similar with embodiment one of other technologies feature in the present embodiment, does not repeat them here.
Embodiment five
Consider and multiple narrow band filter can be replaced to carry out work by carrying out customization to arrowband mixer, for this reason, provide a kind of mode being replaced multiple narrow band filter by arrowband mixer, shown in Figure 6, be the structural representation of the standing wave detecting device embodiment five of multiplefrequency mixer of the present utility model.As shown in Figure 6, the standing wave detecting device of the multiplefrequency mixer in this embodiment four, comprises identical the tenth unidirectional coupler U508 of the way of signal output link of the 5th single-chip microcomputer SCM5, the 9th wave detector D501, the tenth wave detector D502, the 7th diverter switch S501, the 8th diverter switch S502, arrowband mixer U502, the 9th unidirectional coupler U505 ~ U507, number and multiplefrequency mixer that number is identical with the way of the signal input link of multiplefrequency mixer;
Each 9th unidirectional coupler U505 ~ U507 is series in the different described signal input link of multiplefrequency mixer U501 respectively, and the tenth unidirectional coupler U508 is series in the signal output link of described multiplefrequency mixer;
9th wave detector D501, the tenth wave detector D502 connect the 5th single-chip microcomputer SCM5 respectively, 9th wave detector also connects D501 the 7th diverter switch S501, the tenth wave detector D502 also connects the 8th diverter switch S502,7th changes switch S 501 also connects each 9th unidirectional coupler U505 ~ U507 respectively, 8th diverter switch S502 also connects arrowband mixer U502, and arrowband mixer U502 also connects the tenth unidirectional coupler U508;
The frequency range of the signal inputted in the corresponding each described signal input link of band connection frequency of arrowband mixer U502.
Scheme in the present embodiment five, only resides in reduced a diverter switch relative to embodiment one, difference and replace multiple narrow band filter by arrowband mixer, identical or similar with embodiment one of other technologies feature in the present embodiment, does not repeat them here.
It should be noted that, term " first ", " second ", " the 3rd ", " the 4th ", " the 5th ", " the 6th ", " the 7th ", " the 8th ", " the 9th ", " the tenth " only for describing object, and can not be interpreted as instruction or hint relative importance.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (9)
1. the standing wave detecting device of a multiplefrequency mixer, it is characterized in that, comprise the first narrow band filter that the first single-chip microcomputer, first detector, second detector, the first diverter switch, the second diverter switch, the 3rd diverter switch, identical second unidirectional coupler of signal output link way of the first unidirectional coupler, number and multiplefrequency mixer that number is identical with the signal input link way of multiplefrequency mixer and number are identical with described signal input link way;
Each described first unidirectional coupler is series in different described signal input links respectively, and described second unidirectional coupler is series in described signal output link;
Described first detector, described second detector connect described first single-chip microcomputer respectively, described first detector also connects described first diverter switch, described second detector also connects described second diverter switch, described first diverter switch also connects described first unidirectional coupler respectively, described second diverter switch also connects each described first narrow band filter respectively, each described first narrow band filter is also connected with described 3rd diverter switch respectively, and described 3rd diverter switch also connects described second unidirectional coupler.
2. the standing wave detecting device of multiplefrequency mixer according to claim 1, is characterized in that, described first diverter switch, described second diverter switch, described 3rd diverter switch are radio-frequency (RF) switch.
3. the standing wave detecting device of a multiplefrequency mixer, it is characterized in that, comprise the 3rd all identical with the way of the signal input link of multiplefrequency mixer unidirectional coupler of second singlechip, third detector, the 4th wave detector, the 4th diverter switch, the 5th diverter switch and number, the 4th unidirectional coupler, the second narrow band filter;
Each described 3rd unidirectional coupler is series in the different described signal input link of described multiplefrequency mixer respectively, and each described 4th unidirectional coupler is all series in the signal output link of described multiplefrequency mixer;
Described third detector, described 4th wave detector connect described second singlechip respectively, described third detector also connects described 4th diverter switch, described 4th wave detector also connects described 5th diverter switch, described 4th diverter switch also connects each described 3rd unidirectional coupler respectively, described 5th diverter switch also connects each described second narrow band filter respectively, and each second narrow band filter also connects from different described 4th unidirectional couplers respectively.
4. the standing wave detecting device of multiplefrequency mixer according to claim 3, is characterized in that, described 4th diverter switch, described 5th diverter switch are radio-frequency (RF) switch.
5. the standing wave detecting device of a multiplefrequency mixer, it is characterized in that, comprise the 3rd single-chip microcomputer, the 6th diverter switch, also comprise identical the 6th unidirectional coupler of signal output link way of the 5th all identical with the signal input link way of multiplefrequency mixer unidirectional coupler of number, the 5th wave detector, the 6th wave detector, the 3rd narrow band filter and number and multiplefrequency mixer;
Each described 5th unidirectional coupler is series in different described signal input links respectively, and described 6th unidirectional coupler is series in described signal output link;
Each described 5th wave detector, each described 6th wave detector connect described 3rd single-chip microcomputer respectively, each described 5th wave detector also connects each described 5th unidirectional coupler respectively, each described 6th wave detector also connects different described 3rd narrow band filters respectively, each described 3rd narrow band filter is also connected with described 6th diverter switch respectively, and described 6th diverter switch also connects described 6th unidirectional coupler.
6. the standing wave detecting device of multiplefrequency mixer according to claim 5, is characterized in that, described 6th diverter switch is radio-frequency (RF) switch.
7. the standing wave detecting device of a multiplefrequency mixer, it is characterized in that, comprise the 4th single-chip microcomputer and all identical with the way of the signal input link of multiplefrequency mixer the 7th wave detector, the 8th wave detector, the 7th unidirectional coupler, the 8th unidirectional coupler, the 4th narrow band filter of number;
Each described 7th unidirectional coupler is series in the different described signal input link of described multiplefrequency mixer respectively, and each described 8th unidirectional coupler is all series in the signal output link of described multiplefrequency mixer;
Each described 7th wave detector, each described 8th wave detector connect described 4th single-chip microcomputer respectively, each described 7th wave detector also connects different described 7th unidirectional couplers respectively, each described 8th wave detector also connects different described 4th narrow band filters respectively, and each described 4th narrow band filter also connects different described 8th unidirectional couplers respectively.
8. the standing wave detecting device of a multiplefrequency mixer, it is characterized in that, comprise identical the tenth unidirectional coupler of the way of signal output link of the 5th single-chip microcomputer, the 9th wave detector, the tenth wave detector, the 7th diverter switch, the 8th diverter switch, arrowband mixer, the 9th unidirectional coupler, number and multiplefrequency mixer that number is identical with the way of the signal input link of multiplefrequency mixer;
Each described 9th unidirectional coupler is series in the different described signal input link of described multiplefrequency mixer respectively, and described tenth unidirectional coupler is series in the signal output link of described multiplefrequency mixer;
Described 9th wave detector, described tenth wave detector connect described 5th single-chip microcomputer respectively, described 9th wave detector also connects described 7th diverter switch, described tenth wave detector also connects described 8th diverter switch, described 7th changes switch also connects each described 9th unidirectional coupler respectively, described 8th diverter switch also connects described arrowband mixer, and described arrowband mixer also connects described tenth unidirectional coupler.
9. the standing wave detecting device of multiplefrequency mixer according to claim 8, is characterized in that, described 7th diverter switch, described 8th diverter switch are radio-frequency (RF) switch.
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| CN113746445A (en) * | 2020-05-29 | 2021-12-03 | 株式会社村田制作所 | Directional coupler |
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| CN113746445A (en) * | 2020-05-29 | 2021-12-03 | 株式会社村田制作所 | Directional coupler |
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Effective date of registration: 20200131 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Co-patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Patentee before: Comba Telecom System (China) Ltd. Co-patentee before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS Ltd. |