CN104535806A - Automatic switching device and system of power amplifiers - Google Patents
Automatic switching device and system of power amplifiers Download PDFInfo
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- CN104535806A CN104535806A CN201410601821.0A CN201410601821A CN104535806A CN 104535806 A CN104535806 A CN 104535806A CN 201410601821 A CN201410601821 A CN 201410601821A CN 104535806 A CN104535806 A CN 104535806A
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Abstract
The invention provides an automatic switching device and system of power amplifiers. The device comprises a control bus, an input signal switching channel and an output signal switching channel; the input signal switching channel comprises a test signal input port, a first changeover switch and power-amplification signal input ports; the first changeover switch comprises a first control end and multiple first switching ends; the first control end is connected to a signal generator via the test signal input port; each first switching end is connected to one power amplifier via one power-amplification signal input port; the output signal switching channel comprises a signal output port, a second changeover switch and power-amplification signal output ports; the second changeover switch comprises a second control end and second switching ends; each second switching end is connected to one power amplifier via one power-amplification signal output port; the second control end is connected to an emission antenna via the signal output port; and the control bus is connected with both the first and second changeover switches.
Description
Technical field
The invention relates to electromagnetism measuring technology, particularly, is about a kind of power amplifier automatic switching control equipment and system.
Background technology
EMC test, mainly examine electrical equipment can normally work under certain electromagnetic interference environment, and examination when electrical equipment normally works, the electromagnetic wave radiated whether be above standard regulation limit value.Radio frequency electromagnetic field radiation immunity test be one of them important tests, examination be electrical equipment can bear some strength in certain frequency range external electromagnetic field harassing and wrecking ability, radio frequency electromagnetic field radiation immunity test generally carry out in anechoic chamber.Signal generator can produce the electromagnetic wave needing frequency, but electromagnetic intensity is very little, needs to amplify signal through power amplifier, is then radiated on equipment by emitting antenna and tests.
The test frequency range coverage of radio frequency electromagnetic field radiation immunity test is larger, generally anechoic chamber, can carry out the test of the band limits from 30MHz to 18GHz, and so wide test frequency range can be covered without any a certain independent power amplifier at present, therefore need multiple stage power amplifier to combine test.In existing means of testing, be all the method adopting manual switchover power amplifier in test process, manually change output cable, test connects loaded down with trivial details, seriously reduces test speed.Further, in test process, constantly change power amplifier and stube cable, also exacerbate the wearing and tearing of radio-frequency joint, uncertainty of measurement also increases thereupon, reduces the accuracy of test.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is to provide a kind of power amplifier automatic switching control equipment and system, with in radio frequency electromagnetic field radiation immunity test, realizes automatically switching between multiple power amplifier.
To achieve these goals, the embodiment of the present invention provides a kind of power amplifier automatic switching control equipment, described power amplifier automatic switching control equipment comprises: control bus, input signal switching channel and output signal switching channel, wherein, described input signal switching channel comprises: test signal input port, the first change-over switch and multiple power amplifier signal input port, wherein, the first described change-over switch comprises: the first control end and multiple first switch terminal; The first described control end connects a signal generator by described test signal input port; The first switch terminal described in each connects a power amplifier by described power amplifier signal input port; Described output signal switching channel comprises: signal output port, the second change-over switch and multiple power amplifier signal output port, and wherein, the second described change-over switch comprises: the second control end and multiple second switch terminal; The second switch terminal described in each connects the power amplifier described in by the power amplifier signal output port described in; The second described control end connects an emitting antenna by described signal output port; Described control bus connects the first described change-over switch and the second change-over switch respectively, transferring to the first described change-over switch and the second change-over switch for transmitting a control signal, carrying out synchronism switching to control described first change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch.
In one embodiment, above-mentioned power amplifier automatic switching control equipment also comprises: forward sampled signal switching channel and oppositely sampled signal switching channel, wherein, described forward sampled signal switching channel comprises: forward power couple input mouth, the 3rd change-over switch and forward power coupled output ports, wherein, the 3rd described change-over switch comprises: the 3rd control end and multiple 3rd switch terminal; The 3rd switch terminal described in each connects the power amplifier described in by the forward power couple input mouth described in; The 3rd described control end connects an electrometer of field strength by described forward power coupled output ports; Described reverse sampled signal switching channel comprises: backward power couple input mouth, the 4th change-over switch and backward power coupled output ports, and wherein, the 4th described change-over switch comprises: the 4th control end and multiple 4th switch terminal; The 4th switch terminal described in each connects the power amplifier described in by the backward power couple input mouth described in; Electrometer of field strength described in the 4th described control end is connected by described backward power coupled output ports; Described control bus connects the 3rd described change-over switch and the 4th change-over switch respectively, transfers to the first described change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch for transmitting described control signal.
The embodiment of the present invention also provides a kind of power amplifier automatic switchover system, described power amplifier automatic switchover system comprises: main frame, signal generator, emitting antenna, power amplifier automatic switching control equipment and multiple power amplifier, wherein, described power amplifier automatic switching control equipment comprises: control bus, input signal switching channel and output signal switching channel, wherein, described input signal switching channel comprises: test signal input port, first change-over switch and multiple power amplifier signal input port, wherein, the first described change-over switch comprises: the first control end and multiple first switch terminal, the first described control end connects a signal generator by described test signal input port, the first switch terminal described in each connects a power amplifier by described power amplifier signal input port, described output signal switching channel comprises: signal output port, the second change-over switch and multiple power amplifier signal output port, and wherein, the second described change-over switch comprises: the second control end and multiple second switch terminal, the second switch terminal described in each connects the power amplifier described in by the power amplifier signal output port described in, the second described control end connects an emitting antenna by described signal output port, described control bus connects the first described change-over switch and the second change-over switch respectively, transfers to the first described change-over switch and the second change-over switch for transmission of control signals, signal generator described in described main frame connects, and the power amplifier automatic switching control equipment described in being connected by described control bus, signal generator described in described main frame controls according to a test instruction sends a test signal to described power amplifier automatic switching control equipment, and by the control signal described in the transmission of described control bus, to control described first change-over switch and the second change-over switch carries out synchronism switching, power amplifier automatic switching control equipment described in described signal generator is connected by described test signal input port, the power amplifier described in described power amplifier automatic switching control equipment is connected by described power amplifier signal input port, power amplifier automatic switching control equipment described in described power amplifier is connected by described power amplifier signal output port, the emitting antenna described in described power amplifier automatic switching control equipment is connected by described signal output port.
In one embodiment, above-mentioned power amplifier automatic switching control equipment also comprises: forward sampled signal switching channel and oppositely sampled signal switching channel, wherein, described forward sampled signal switching channel comprises: forward power couple input mouth, the 3rd change-over switch and forward power coupled output ports, wherein, the 3rd described change-over switch comprises: the 3rd control end and multiple 3rd switch terminal; The 3rd switch terminal described in each connects the power amplifier described in by the forward power couple input mouth described in; The 3rd described control end connects an electrometer of field strength by described forward power coupled output ports; The forward power coupled signal of described power amplifier feedback transfers to described electrometer of field strength by described forward power couple input mouth, the 3rd change-over switch and forward power coupled output ports successively; Described reverse sampled signal switching channel comprises: backward power couple input mouth, the 4th change-over switch and backward power coupled output ports, and wherein, the 4th described change-over switch comprises: the 4th control end and multiple 4th switch terminal; The 4th switch terminal described in each connects the power amplifier described in by the backward power couple input mouth described in; Electrometer of field strength described in the 4th described control end is connected by described backward power coupled output ports; The backward power coupled signal of described power amplifier feedback transfers to described electrometer of field strength by described backward power couple input mouth, the 4th change-over switch and backward power coupled output ports successively; Described control bus connects the 3rd described change-over switch and the 4th change-over switch respectively, transferring to the first described change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch for transmitting described control signal, carrying out synchronism switching to control described first change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch.
In one embodiment, above-mentioned power amplifier automatic switchover system also comprises: electrometer of field strength, the two ends of described electrometer of field strength connect described power amplifier automatic switching control equipment and main frame respectively, measurement result for receiving and measure described forward power coupled signal and backward power coupled signal, and is transferred to described main frame by described electrometer of field strength.
In one embodiment, above-mentioned main frame calculates standing-wave ratio (SWR) and reflection coefficient according to described measurement result, and adjusts the frequency of the described test signal that described signal generator sends according to described standing-wave ratio (SWR) and reflection coefficient.
Beneficial effect of the present invention is, the handoff functionality of radio-frequency path is realized by the state controlling change-over switch, avoid in existing test process, the tedious steps that need manually switch, achieve the intellectuality of test process, robotization, thus improve testing efficiency and the accuracy of radio frequency electromagnetic field radiation immunity.And, the frequency of the test signal that signal generator sends is adjusted further according to the standing-wave ratio (SWR) and reflection coefficient that calculate acquisition in conjunction with forward power coupled signal and backward power coupled signal, to guarantee that the frequency of this test signal meets the Operational Safety indicators of whole power amplifier automatic switchover system, thus ensure security and the stability of test process.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the power amplifier automatic switching control equipment according to the embodiment of the present invention;
Fig. 2 is the structural representation of the power amplifier automatic switchover system according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of power amplifier automatic switching control equipment and system.Below in conjunction with accompanying drawing, the present invention is described in detail.
The embodiment of the present invention provides a kind of power amplifier automatic switching control equipment, and as shown in Figure 1, this power amplifier automatic switching control equipment comprises: control bus 1, input signal switching channel 2 and output signal switching channel 3.
Particularly, this input signal switching channel 2 comprises: test signal input port 21, change-over switch 22, and multiple power amplifier signal input port 23.As can be seen from Figure 1, control end 221 and multiple switch terminal 222 is provided with in this change-over switch 22.
In practical application, control end 221 can be connected with a signal generator by test signal input port 21, and this power amplifier automatic switching control equipment receives a test signal of this signal generator transmission by this test signal input port 21.
Multiple switch terminal 222 of change-over switch 22 are connected one to one with multiple power amplifier respectively by above-mentioned power amplifier signal input port 23.In practical application, by switching between switch terminal 222 multiple in change-over switch 22, thus select some power amplifiers as the receiving end of above-mentioned test signal.
Above-mentioned output signal switching channel 3 comprises: signal output port 31, change-over switch 32, and multiple power amplifier signal output port 33.Wherein, in change-over switch 32, be provided with control end 321, and multiple switch terminal 322.
In practical application, above-mentioned multiple switch terminal 322 are connected respectively by the power amplifier that a power amplifier signal output port 33 is above-mentioned with one of them; Control end 321 is connected with an emitting antenna by this signal output port 31.The test signal of power amplifier is transferred to by above-mentioned switch terminal 222, after the amplification of this power amplifier, power amplifier automatic switching control equipment is transferred to by this switch terminal 322, and by switching this switch terminal 322 and control end 321 conducting, make the test signal after amplifying transfer to this emitting antenna by this signal output port 31.
Control bus 1 connects above-mentioned change-over switch 22 and change-over switch 32 respectively.By this control bus 1, a control signal can be transmitted to change-over switch 22 and change-over switch 32, in order to control change-over switch 22 and change-over switch 32 carries out synchronism switching, selected by switching in different power amplifiers of change-over switch 22, to transmit this test signal, and complete the amplification process to this test signal by selected power amplifier, and pass through the switching of change-over switch 32, formation path corresponding to the power amplifier that change-over switch 22 is selected, test signal after amplifying is transmitted back power amplifier automatic switching control equipment via this power amplifier signal output port 33 and change-over switch 32, and export the test signal after amplification to above-mentioned emitting antenna by this signal output port 31.
In the test process of reality, also can calculate standing-wave ratio (SWR) and reflection coefficient according to the forward power coupled signal of power amplifier feedback and backward power coupled signal, and the further adjustment realized accordingly test signal, ensure security and the stability of test process.
In order to realize above-mentioned functions, above-mentioned power amplifier automatic switching control equipment also comprises: forward sampled signal switching channel 4 and oppositely sampled signal switching channel 5.
As shown in Figure 1, this forward sampled signal switching channel 4 comprises: forward power coupled output ports 41, change-over switch 42 and multiple forward power couple input mouth 43.Wherein, control end 421 and multiple switch terminal 422 is provided with in change-over switch 42.
In practical application, above-mentioned multiple switch terminal 422 are connected respectively by the power amplifier that a forward power couple input mouth 43 is above-mentioned with one of them; Control end 421 is connected with an electrometer of field strength by this forward power coupled output ports 41.When there being test signal to input in the power amplifier be connected with switch terminal 422, this power amplifier can generate forward power coupled signal, and transfer to switch terminal 422 by this forward power couple input mouth 43, and by this control end 421 and forward power coupled output ports 41, this forward power coupled signal is transferred to this electrometer of field strength successively, to measure this forward power coupled signal.
As shown in Figure 1, this reverse sampled signal switching channel 5 comprises: backward power coupled output ports 51, change-over switch 52 and multiple backward power couple input mouth 53.Wherein, control end 521 and multiple switch terminal 522 is provided with in change-over switch 52.
In practical application, above-mentioned multiple switch terminal 522 are connected respectively by the power amplifier that a backward power couple input mouth 53 is above-mentioned with one of them; Control end 521 is connected with above-mentioned electrometer of field strength by this backward power coupled output ports 51.When there being test signal to input in the power amplifier be connected with switch terminal 522, this power amplifier can generate backward power coupled signal, and transfer to switch terminal 522 by this backward power couple input mouth 53, and by this control end 521 and backward power coupled output ports 51, backward power coupled signal is transferred to this electrometer of field strength successively, to measure this backward power coupled signal.
Above-mentioned control bus 1 is connected with change-over switch 42 and change-over switch 43 respectively.By this control bus 1, can to change-over switch 22, change-over switch 32, change-over switch 42 and change-over switch 43 transmit this control signal, in order to control change-over switch 22, change-over switch 32, change-over switch 42 and change-over switch 43 carry out synchronism switching, selected by switching in different power amplifiers of change-over switch 22, to transmit this test signal, and complete the amplification process to this test signal by selected power amplifier, and pass through the switching of change-over switch 32, formation path corresponding to the power amplifier that change-over switch 22 is selected, test signal after amplifying is transmitted back power amplifier automatic switching control equipment via this power amplifier signal output port 33 and change-over switch 32, and export the test signal after amplification to above-mentioned emitting antenna by this signal output port 31.
Simultaneously, by the switching of change-over switch 42 and change-over switch 52, the power amplifier conducting selected with change-over switch 22, so that the forward power coupled signal of this power amplifier feedback and backward power coupled signal are transferred to above-mentioned electrometer of field strength, to complete the measurement to this forward power coupled signal and backward power coupled signal.
By the power amplifier automatic switching control equipment of the embodiment of the present invention, automatically the state of change-over switch can be controlled to realize the handoff functionality of radio-frequency path, avoid in existing test process, the tedious steps that need manually switch, achieve the intellectuality of test process, robotization, thus improve testing efficiency and the accuracy of radio frequency electromagnetic field radiation immunity.
Another embodiment of the present invention provides a kind of power amplifier automatic switchover system 100, as shown in Figure 2, this power amplifier automatic switchover system 100 comprises: main frame 101, signal generator 102, power amplifier automatic switching control equipment 103, multiple power amplifier 104 and an emitting antenna 105.
Wherein, as shown in Figure 1, this power amplifier automatic switching control equipment 103 comprises the concrete structure of this power amplifier automatic switching control equipment 103: control bus 1, input signal switching channel 2 and output signal switching channel 3.
Particularly, this input signal switching channel 2 comprises: test signal input port 21, change-over switch 22, and multiple power amplifier signal input port 23.As can be seen from Figure 1, control end 221 and multiple switch terminal 222 is provided with in this change-over switch 22.
In practical application, control end 221 can be connected with signal generator 102 by test signal input port 21, and this power amplifier automatic switching control equipment 103 receives a test signal of this signal generator 102 transmission by this test signal input port 21.
Multiple switch terminal 222 of change-over switch 22 are connected one to one with multiple power amplifier 104 respectively by above-mentioned power amplifier signal input port 23.In practical application, by switching between switch terminal 222 multiple in change-over switch 22, thus select some power amplifiers 104 as the receiving end of above-mentioned test signal.
Above-mentioned output signal switching channel 3 comprises: signal output port 31, change-over switch 32, and multiple power amplifier signal output port 33.Wherein, in change-over switch 32, be provided with control end 321, and multiple switch terminal 322.
In practical application, above-mentioned multiple switch terminal 322 are connected respectively by the power amplifier 104 that a power amplifier signal output port 33 and one of them are above-mentioned; Control end 321 is connected with emitting antenna 105 by this signal output port 31.The test signal of power amplifier is transferred to by above-mentioned switch terminal 222, after the amplification of this power amplifier 104, power amplifier automatic switching control equipment 103 is transferred to by this switch terminal 322, and by switching this switch terminal 322 and control end 321 conducting, make the test signal after amplifying transfer to this emitting antenna 105 by this signal output port 31.
Control bus 1 connects above-mentioned change-over switch 22 and change-over switch 32 respectively.By this control bus 1, a control signal can be transmitted to change-over switch 22 and change-over switch 32, in order to control change-over switch 22 and change-over switch 32 carries out synchronism switching, selected by switching in different power amplifiers 104 of change-over switch 22, to transmit this test signal, and complete the amplification process to this test signal by selected power amplifier 104, and pass through the switching of change-over switch 32, formation path corresponding to the power amplifier 104 that change-over switch 22 is selected, test signal after amplifying is transmitted back power amplifier automatic switching control equipment 103 via this power amplifier signal output port 33 and change-over switch 32, and export the test signal after amplification to emitting antenna 105 by this signal output port 31.
During concrete enforcement, this main frame 101 is connected with signal generator 102, and connects power amplifier automatic switching control equipment 103 by control bus 1.When carrying out radio frequency electromagnetic field radiation immunity test, tester inputs a test instruction by this main frame 101, and main frame 101 sends a test signal according to this test instruction control signal generator 102 to power amplifier automatic switching control equipment 103; Meanwhile, main frame 101 transmits one by control bus 1 and controls signal to change-over switch 22 and change-over switch 32, carries out synchronism switching by this control signal control change-over switch 22 and change-over switch 32.
Particularly, signal generator 102 is connected with power amplifier automatic switching control equipment 103 by test signal input port 21, power amplifier automatic switching control equipment 103 connects multiple power amplifier 104 respectively by multiple power amplifier signal input port 23, power amplifier 104 is connected with this power amplifier automatic switching control equipment 103 by power amplifier signal output port 33, and power amplifier automatic switching control equipment 103 connects emitting antenna 105 by signal output port 31.When main frame 101 control signal generator 102 sends this test signal to power amplifier automatic switching control equipment 103, this test signal transfers to one of them power amplifier 104 by the switching of change-over switch 22 in power amplifier automatic switching control equipment 103, this test signal is after power amplifier 104 amplifies, power amplifier automatic switching control equipment 103 is transmitted back by this power amplifier signal output port 33, the control signal transmitted by control bus 1 controls the synchronism switching of change-over switch 32 and change-over switch 22, the switch terminal 322 of the test signal after the control end 321 of change-over switch 32 is amplified with transmission is connected, form path, and the test signal after this amplification is transferred to emitting antenna 105 by signal output port 31, then namely by this emitting antenna 105, the test signal after amplifying is radiated on Devices to test and carries out concrete test process.
In the test process of reality, also can calculate standing-wave ratio (SWR) and reflection coefficient according to the forward power coupled signal of power amplifier feedback and backward power coupled signal, and the further adjustment realized accordingly test signal, ensure security and the stability of test process.
In order to realize above-mentioned functions, above-mentioned power amplifier automatic switching control equipment 103 also comprises: forward sampled signal switching channel 4 and oppositely sampled signal switching channel 5.Further, as shown in Figure 2, this power amplifier automatic switchover system 100 is correspondingly provided with an electrometer of field strength 106, in order to receive and to measure this forward power coupled signal and backward power coupled signal, and measurement result is transferred to main frame 101.
As shown in Figure 1, this forward sampled signal switching channel 4 comprises: forward power coupled output ports 41, change-over switch 42 and multiple forward power couple input mouth 43.Wherein, control end 421 and multiple switch terminal 422 is provided with in change-over switch 42.
In practical application, above-mentioned multiple switch terminal 422 are connected respectively by the power amplifier 104 that a forward power couple input mouth 43 is above-mentioned with one of them; Control end 421 is connected with electrometer of field strength 106 by this forward power coupled output ports 41.When there being test signal to input in the power amplifier 104 be connected with switch terminal 422, this power amplifier 104 can generate forward power coupled signal, and transfer to switch terminal 422 by this forward power couple input mouth 43, and by this control end 421 and forward power coupled output ports 41, this forward power coupled signal is transferred to this electrometer of field strength 106 successively, to measure this forward power coupled signal.
As shown in Figure 1, this reverse sampled signal switching channel 5 comprises: backward power coupled output ports 51, change-over switch 52 and multiple backward power couple input mouth 53.Wherein, control end 521 and multiple switch terminal 522 is provided with in change-over switch 52.
In practical application, above-mentioned multiple switch terminal 522 are connected respectively by the power amplifier 104 that a backward power couple input mouth 53 is above-mentioned with one of them; Control end 521 is connected with above-mentioned electrometer of field strength 106 by this backward power coupled output ports 51.When there being test signal to input in the power amplifier 104 be connected with switch terminal 522, this power amplifier 104 can generate backward power coupled signal, and transfer to switch terminal 522 by this backward power couple input mouth 53, and by this control end 521 and backward power coupled output ports 51, backward power coupled signal is transferred to this electrometer of field strength 106 successively, to measure this backward power coupled signal.
Above-mentioned control bus 1 is connected with change-over switch 42 and change-over switch 43 respectively.By this control bus 1, can to change-over switch 22, change-over switch 32, change-over switch 42 and change-over switch 43 transmit this control signal, in order to control change-over switch 22, change-over switch 32, change-over switch 42 and change-over switch 43 carry out synchronism switching, selected by switching in different power amplifiers of change-over switch 22, to transmit this test signal, and complete the amplification process to this test signal by selected power amplifier 104, and pass through the switching of change-over switch 32, formation path corresponding to the power amplifier 104 that change-over switch 22 is selected, test signal after amplifying is transmitted back power amplifier automatic switching control equipment 103 via this power amplifier signal output port 33 and change-over switch 32, and export the test signal after amplification to above-mentioned emitting antenna 105 by this signal output port 31.
Simultaneously, by the switching of change-over switch 42 and change-over switch 52, power amplifier 104 conducting selected with change-over switch 22, above-mentioned electrometer of field strength 106 is transferred to the forward power coupled signal fed back by this power amplifier 104 and backward power coupled signal, to complete the measurement to this forward power coupled signal and backward power coupled signal, and measurement result is transferred to main frame 101.
After the measurement result that have received electrometer of field strength 106 transmission, main frame 101 can calculate standing-wave ratio (SWR) and reflection coefficient according to this measurement result, and the frequency of the test signal that signal generator 101 sends is adjusted further according to the standing-wave ratio (SWR) and reflection coefficient that calculate acquisition, to guarantee that the frequency of this test signal meets the Operational Safety indicators of whole power amplifier automatic switchover system 100, thus ensure security and the stability of test process.
It should be noted that, in embodiments of the present invention, the quantity of Fig. 1 and switch terminal illustrated in fig. 2 222,322,422,522 is two, and the quantity of power amplifier 104 is set to two accordingly.But the quantity of the switch terminal shown in figure and power amplifier is only and illustrates, and and be not used to limit the present invention.In practical application, can according to the needs of concrete testing apparatus and environment, the quantity of switch terminal 222,322,422,522 is adjusted to three, four or multiple, the quantity of power amplifier 104 is then corresponding to be adjusted.
In the specific implementation, power amplification switching control 103 can adopt standard 5U cabinet.Further, consider safety and laboratory usage space, power amplification switching control 103 and power amplifier 104 are arranged in same cabinet.
Each above-mentioned input/output end port is installed in the device back side, the control end arranged in change-over switch 22,42,52 and switch terminal are 9 radio frequency connectors, this radio frequency connector is N (f)-SMA (f) wall-penetrating type adapter, and outside, SMA head is interior for N head.Change-over switch 32 is high power RF switch, the control end arranged in change-over switch 32 and switch terminal are 3 high power adapters, this high power adapter is N (f)-N (f) wall-penetrating type adapter, and two ends are N-type female, and flange is mounted externally.The radio-frequency cable be connected with change-over switch 32 adopts semi-flexible cable, and in order to reduce radio-frequency path to high-power loss, radio-frequency cable is short as far as possible.
The power requirement that 3 high power adapters in change-over switch 32 and radio-frequency cable can bear is as shown in Table 1:
Table one
| Power | 1GHz | 3GHz | 6GHz |
| High power adapter | >1000W | >600W | >400W |
| Radio-frequency cable | >1000W | >600W | >400W |
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a power amplifier automatic switching control equipment, is characterized in that, described power amplifier automatic switching control equipment comprises: control bus, input signal switching channel and output signal switching channel, wherein,
Described input signal switching channel comprises: test signal input port, the first change-over switch and multiple power amplifier signal input port,
Wherein, the first described change-over switch comprises: the first control end and multiple first switch terminal;
The first described control end connects a signal generator by described test signal input port;
The first switch terminal described in each connects a power amplifier by described power amplifier signal input port;
Described output signal switching channel comprises: signal output port, the second change-over switch and multiple power amplifier signal output port,
Wherein, the second described change-over switch comprises: the second control end and multiple second switch terminal;
The second switch terminal described in each connects the power amplifier described in by the power amplifier signal output port described in;
The second described control end connects an emitting antenna by described signal output port;
Described control bus connects the first described change-over switch and the second change-over switch respectively, controls signal to the first described change-over switch and the second change-over switch for transmitting one.
2. power amplifier automatic switching control equipment according to claim 1, is characterized in that, described power amplifier automatic switching control equipment also comprises: forward sampled signal switching channel and oppositely sampled signal switching channel, wherein,
Described forward sampled signal switching channel comprises: forward power couple input mouth, the 3rd change-over switch and forward power coupled output ports,
Wherein, the 3rd described change-over switch comprises: the 3rd control end and multiple 3rd switch terminal;
The 3rd switch terminal described in each connects the power amplifier described in by the forward power couple input mouth described in;
The 3rd described control end connects an electrometer of field strength by described forward power coupled output ports;
Described reverse sampled signal switching channel comprises: backward power couple input mouth, the 4th change-over switch and backward power coupled output ports,
Wherein, the 4th described change-over switch comprises: the 4th control end and multiple 4th switch terminal;
The 4th switch terminal described in each connects the power amplifier described in by the backward power couple input mouth described in;
Electrometer of field strength described in the 4th described control end is connected by described backward power coupled output ports;
Described control bus connects the 3rd described change-over switch and the 4th change-over switch respectively, described controlling signal to the first described change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch for transmitting, carrying out synchronism switching to control described first change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch.
3. a power amplifier automatic switchover system, it is characterized in that, described power amplifier automatic switchover system comprises: main frame, signal generator, emitting antenna, power amplifier automatic switching control equipment and multiple power amplifier, wherein, described power amplifier automatic switching control equipment comprises: control bus, input signal switching channel and output signal switching channel, wherein
Described input signal switching channel comprises: test signal input port, the first change-over switch and multiple power amplifier signal input port,
Wherein, the first described change-over switch comprises: the first control end and multiple first switch terminal;
The first described control end connects a signal generator by described test signal input port;
The first switch terminal described in each connects a power amplifier by described power amplifier signal input port;
Described output signal switching channel comprises: signal output port, the second change-over switch and multiple power amplifier signal output port,
Wherein, the second described change-over switch comprises: the second control end and multiple second switch terminal;
The second switch terminal described in each connects the power amplifier described in by the power amplifier signal output port described in;
The second described control end connects an emitting antenna by described signal output port;
Described control bus connects the first described change-over switch and the second change-over switch respectively, for transmission of control signals to the first described change-over switch and the second change-over switch;
Signal generator described in described main frame connects, and the power amplifier automatic switching control equipment described in being connected by described control bus, signal generator described in described main frame controls according to a test instruction sends a test signal to described power amplifier automatic switching control equipment, and by the control signal described in the transmission of described control bus, to control described first change-over switch and the second change-over switch carries out synchronism switching;
Power amplifier automatic switching control equipment described in described signal generator is connected by described test signal input port, the power amplifier described in described power amplifier automatic switching control equipment is connected by described power amplifier signal input port;
Power amplifier automatic switching control equipment described in described power amplifier is connected by described power amplifier signal output port, the emitting antenna described in described power amplifier automatic switching control equipment is connected by described signal output port.
4. power amplifier automatic switchover system according to claim 3, is characterized in that, described power amplifier automatic switching control equipment also comprises: forward sampled signal switching channel and oppositely sampled signal switching channel, wherein,
Described forward sampled signal switching channel comprises: forward power couple input mouth, the 3rd change-over switch and forward power coupled output ports,
Wherein, the 3rd described change-over switch comprises: the 3rd control end and multiple 3rd switch terminal;
The 3rd switch terminal described in each connects the power amplifier described in by the forward power couple input mouth described in;
The 3rd described control end connects an electrometer of field strength by described forward power coupled output ports;
The forward power coupled signal of described power amplifier feedback transfers to described electrometer of field strength by described forward power couple input mouth, the 3rd change-over switch and forward power coupled output ports successively;
Described reverse sampled signal switching channel comprises: backward power couple input mouth, the 4th change-over switch and backward power coupled output ports,
Wherein, the 4th described change-over switch comprises: the 4th control end and multiple 4th switch terminal;
The 4th switch terminal described in each connects the power amplifier described in by the backward power couple input mouth described in;
Electrometer of field strength described in the 4th described control end is connected by described backward power coupled output ports;
The backward power coupled signal of described power amplifier feedback transfers to described electrometer of field strength by described backward power couple input mouth, the 4th change-over switch and backward power coupled output ports successively;
Described control bus connects the 3rd described change-over switch and the 4th change-over switch respectively, described controlling signal to the first described change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch for transmitting, carrying out synchronism switching to control described first change-over switch, the second change-over switch, the 3rd change-over switch and the 4th change-over switch.
5. power amplifier automatic switchover system according to claim 4, is characterized in that, described power amplifier automatic switchover system also comprises:
Electrometer of field strength, the two ends of described electrometer of field strength connect described power amplifier automatic switching control equipment and main frame respectively, measurement result for receiving and measure described forward power coupled signal and backward power coupled signal, and is transferred to described main frame by described electrometer of field strength.
6. power amplifier automatic switchover system according to claim 5, it is characterized in that, described main frame calculates standing-wave ratio (SWR) and reflection coefficient according to described measurement result, and adjusts the frequency of the described test signal that described signal generator sends according to described standing-wave ratio (SWR) and reflection coefficient.
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