CN205070981U - Preceding stage driver - Google Patents
Preceding stage driver Download PDFInfo
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- CN205070981U CN205070981U CN201520831520.7U CN201520831520U CN205070981U CN 205070981 U CN205070981 U CN 205070981U CN 201520831520 U CN201520831520 U CN 201520831520U CN 205070981 U CN205070981 U CN 205070981U
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- signal processing
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- driver
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Abstract
The utility model discloses a preceding stage driver, preceding stage driver includes: a plurality of preceding stage signal processing passageways, radio frequency input port, be used for selecting preceding stage signal processing passageway change over switch and corresponding to the radio frequency output port of a plurality of preceding stage signal processing passageways, preceding stage signal processing passageway includes switch, RF amplifying element, balanced device, radiofrequency signal gets into change over switch through radio frequency input port, and change over switch will correspond radiofrequency signal and switch to the preceding stage signal processing passageway that corresponds the frequency channel, and the RF amplifying element that the radiofrequency signal process corresponds the preceding stage signal processing passageway of frequency channel enlargies the back, exports the preceding stage input port 2 of the radio frequency input port 1 conduct back level device of the preceding stage signal processing passageway of corresponding frequency channel behind the frequency - intensity modulation of balanced device to radiofrequency signal to. The utility model has the characteristics of small, the quality is little, the integrated level is high, also can regard as the preceding stage driver of other amplifiers, perhaps regard as the radiofrequency signal amplifier of transmitter.
Description
Technical field
The utility model relates to a kind of microwave device, relates in particular to a kind of pre-driver.
Background technology
Travelling wave tube in microwave amplifier part such as some solid state device, electron tube etc. is the important electronic device in the fields such as microwave communication, is widely used in periodic traffic, marine navigation, flight navigation etc.In some communication transmitter system, pre-driver is being necessary additional device in the use procedure of microwave amplifier part.In order to coordinate the miniaturization trend of communication system, some amplifying devices such as travelling wave tube is also developing toward miniaturization, traditional pre-driver is by solid amplifier, equalizer, cable connectors, the device compositions such as attenuator, at some wide band travelling wave tube, the broad-band TWT radio frequency sending set of such as frequency band 2 ~ 18GHz, need employing two travelling wave tube, therefore 2 cover travelling wave tube pre-driver are needed, this causes the component number forming pre-driver may reach 6 ~ 10, quality is greater than 500g, pre-driver self is caused to be difficult to realize miniaturized (volume reduction, quality alleviates) design, take the space structure that transmitter is a large amount of, increase transmitter quality, cause being unfavorable for realizing transmitter miniaturization.
Summary of the invention
In view of the foregoing, the utility model provides a kind of pre-driver, to solve the problem.
The technical solution of the utility model is: a kind of pre-driver, and described pre-driver comprises: multiple prime signal processing channel, rf inputs mouth, for selecting the change over switch of prime signal processing channel and corresponding to the radio frequency output port of multiple prime signal processing channel;
-described prime signal processing channel comprises mains switch, RF amplifier element, equalizer;
-radiofrequency signal enters change over switch through rf inputs mouth, corresponding radiofrequency signal is switched to the prime signal processing channel of corresponding frequency band by change over switch, radiofrequency signal, after the RF amplifier element of the prime signal processing channel of corresponding frequency band amplifies, exports the prime drive singal of radio frequency output port as rear class device of the prime signal processing channel of corresponding frequency band to after the frequency-intensity modulated of equalizer radio frequency signal.Here, as further improvement, radiofrequency signal enters change over switch through rf inputs mouth, when corresponding radiofrequency signal is switched to the prime signal processing channel of corresponding frequency band by change over switch, described mains switch can close the working power of the RF amplifier element of other prime signal processing channels simultaneously, the consumption to power supply can be reduced, energy efficient.
Here, the frequency range of described pre-driver can be 2 ~ 18GHz, comprises the prime signal processing channel that prime signal processing channel that a frequency range is 2 ~ 6GHz and frequency range are 6 ~ 18GHz, 2 ~ 18GHz radiofrequency signal enters change over switch through rf inputs mouth, the radiofrequency signal of 2 ~ 6GHz is switched to the prime signal processing channel of 2 ~ 6GHz by change over switch, described mains switch closes the working power of the RF amplifier element of the prime signal processing channel of 6 ~ 18GHz simultaneously, the radiofrequency signal of 2 ~ 6GHz through 2 ~ 6GHz the RF amplifier element of prime signal processing channel amplify after, through 2 ~ 6GHz the equalizer of prime signal processing channel to the frequency-intensity modulated of the radiofrequency signal of 2 ~ 6GHz after export the prime drive singal of radio frequency output port as rear class device of 2 ~ 6GHz to, 2 ~ 18GHz radiofrequency signal enters change over switch through rf inputs mouth, the radiofrequency signal of 6 ~ 18GHz is switched to the prime signal processing channel of 6 ~ 18GHz by change over switch, described mains switch closes the working power of the RF amplifier element of the prime signal processing channel of 2 ~ 6GHz simultaneously, the radiofrequency signal of 6 ~ 18GHzGHz is after the RF amplifier element of the prime signal processing channel of 6 ~ 18GHzGHz amplifies, the prime drive singal of radio frequency output port as rear class device of 6 ~ 18GHz is exported to after the equalizer of the prime signal processing channel of 6 ~ 18GHzGHz is to the frequency-intensity modulated of the radiofrequency signal of 6 ~ 18GHz.
The change over switch of described pre-driver is TTL change over switch.
The prevention at radio-frequency port of described pre-driver can be MMCX or DSB or DSD or SAA or SSMA or SSMB or MCX or SMA or SMB or SMC or BMA or SMZ or BNC.
Pre-driver described in the utility model, overall dimension can reach≤125mm × 75mm × 20mm, quality≤250g, have that volume is little, quality is little, the feature that integrated level is high, also can as the pre-driver of the pre-driver of other amplifiers such as travelling wave tube, or as the radio frequency signal amplifiers of transmitter.
Accompanying drawing explanation
The theory diagram of Fig. 1 pre-driver of the present utility model;
The pre-driver theory diagram of Fig. 2 the utility model embodiment;
The pre-driver outline drawing of Fig. 3 the utility model embodiment.
In figure, 1-2 ~ 18GHz rf inputs mouth, 2-2 ~ 6GHz radio frequency output port, 3-6 ~ 18GHz radio frequency output port.
Embodiment
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment: a kind of pre-driver, described pre-driver is the pre-driver of travelling wave tube, its working frequency range 2 ~ 18GHz, input power (0 ± 2) dBm, second harmonic suppression≤-20dBc, benefit flatness≤± 1.5dB, TTL <80ns switching time, noise factor≤6dB, switch isolation degree >=80dB, it comprises: multiple prime signal processing channel, rf inputs mouth, for selecting the TTL change over switch of prime signal processing channel and the radio frequency output port corresponding to multiple prime signal processing channel.
Described prime signal processing channel comprises mains switch, RF amplifier element, equalizer.
Radiofrequency signal enters TTL change over switch through rf inputs mouth, corresponding radiofrequency signal is switched to the prime signal processing channel of corresponding frequency band by TTL change over switch, described mains switch closes the working power of the RF amplifier element of other prime signal processing channels simultaneously, here, also the working power (close and electrical source consumption can be saved) of the RF amplifier element of other prime signal processing channels can be closed, radiofrequency signal is after the RF amplifier element of the prime signal processing channel of corresponding frequency band amplifies, the prime drive singal of radio frequency output port as travelling wave tube of the prime signal processing channel of corresponding frequency band is exported to after the frequency-intensity modulated of equalizer radio frequency signal.
The frequency range of described pre-driver is 2 ~ 18GHz, comprises the prime signal processing channel that prime signal processing channel that a frequency range is 2 ~ 6GHz and frequency range are 6 ~ 18GHz.
2 ~ 18GHz radiofrequency signal enters TTL change over switch through rf inputs mouth, the radiofrequency signal of 2 ~ 6GHz is switched to the prime signal processing channel of 2 ~ 6GHz by TTL change over switch, described mains switch closes the working power of the RF amplifier element of the prime signal processing channel of 6 ~ 18GHz simultaneously, the radiofrequency signal of 2 ~ 6GHz through 2 ~ 6GHz the RF amplifier element of prime signal processing channel amplify after, through 2 ~ 6GHz the equalizer of prime signal processing channel to the frequency-intensity modulated of the radiofrequency signal of 2 ~ 6GHz after export the prime drive singal of radio frequency output port as travelling wave tube of 2 ~ 6GHz to.
2 ~ 18GHz radiofrequency signal enters change over switch through rf inputs mouth, the radiofrequency signal of 6 ~ 18GHz is switched to the prime signal processing channel of 6 ~ 18GHz by change over switch, described mains switch closes the working power of the RF amplifier element of the prime signal processing channel of 2 ~ 6GHz simultaneously, the radiofrequency signal of 6 ~ 18GHzGHz is after the RF amplifier element of the prime signal processing channel of 6 ~ 18GHzGHz amplifies, the prime drive singal of radio frequency output port as travelling wave tube of 6 ~ 18GHz is exported to after the equalizer of the prime signal processing channel of 6 ~ 18GHzGHz is to the frequency-intensity modulated of the radiofrequency signal of 6 ~ 18GHz.
The prevention at radio-frequency port of the pre-driver described in the present embodiment can be MMCX or DSB or DSD or SAA or SSMA or SSMB or MCX or SMA or SMB or SMC or BMA or SMZ or BNC.
Pre-driver overall dimension≤125mm × 75mm × 20mm described in the utility model embodiment, quality≤250g, have that volume is little, quality is little, the feature that integrated level is high.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a pre-driver, it is characterized in that, described pre-driver comprises: multiple prime signal processing channel, rf inputs mouth, for selecting the change over switch of prime signal processing channel and corresponding to the radio frequency output port of multiple prime signal processing channel;
-described prime signal processing channel comprises mains switch, RF amplifier element, equalizer;
-radiofrequency signal enters change over switch through rf inputs mouth, corresponding radiofrequency signal is switched to the prime signal processing channel of corresponding frequency band by change over switch, radiofrequency signal, after the RF amplifier element of the prime signal processing channel of corresponding frequency band amplifies, exports the prime drive singal of radio frequency output port as rear class device of the prime signal processing channel of corresponding frequency band to after the frequency-intensity modulated of equalizer radio frequency signal.
2. a kind of pre-driver as claimed in claim 1, it is characterized in that, radiofrequency signal enters change over switch through rf inputs mouth, corresponding radiofrequency signal is switched to the prime signal processing channel of corresponding frequency band by change over switch, and described mains switch closes the working power of the RF amplifier element of other prime signal processing channels simultaneously.
3. a kind of pre-driver as claimed in claim 2, is characterized in that, the frequency range of described pre-driver is 2 ~ 18GHz, comprises the prime signal processing channel that prime signal processing channel that a frequency range is 2 ~ 6GHz and frequency range are 6 ~ 18GHz;
2 ~ 18GHz radiofrequency signal enters change over switch through rf inputs mouth, the radiofrequency signal of 2 ~ 6GHz is switched to the prime signal processing channel of 2 ~ 6GHz by change over switch, described mains switch closes the working power of the RF amplifier element of the prime signal processing channel of 6 ~ 18GHz simultaneously, the radiofrequency signal of 2 ~ 6GHz through 2 ~ 6GHz the RF amplifier element of prime signal processing channel amplify after, through 2 ~ 6GHz the equalizer of prime signal processing channel to the frequency-intensity modulated of the radiofrequency signal of 2 ~ 6GHz after export the prime drive singal of radio frequency output port as rear class device of 2 ~ 6GHz to,
2 ~ 18GHz radiofrequency signal enters change over switch through rf inputs mouth, the radiofrequency signal of 6 ~ 18GHz is switched to the prime signal processing channel of 6 ~ 18GHz by change over switch, described mains switch closes the working power of the RF amplifier element of the prime signal processing channel of 2 ~ 6GHz simultaneously, the radiofrequency signal of 6 ~ 18GHzGHz is after the RF amplifier element of the prime signal processing channel of 6 ~ 18GHzGHz amplifies, the prime drive singal of radio frequency output port as rear class device of 6 ~ 18GHz is exported to after the equalizer of the prime signal processing channel of 6 ~ 18GHzGHz is to the frequency-intensity modulated of the radiofrequency signal of 6 ~ 18GHz.
4. a kind of pre-driver as described in claim as arbitrary in claim 1-3, is characterized in that, described change over switch is TTL change over switch.
5. a kind of pre-driver as claimed in claim 4, is characterized in that, described prevention at radio-frequency port can be MMCX or DSB or DSD or SAA or SSMA or SSMB or MCX or SMA or SMB or SMC or BMA or SMZ or BNC.
6. a kind of pre-driver as claimed in claim 5, is characterized in that, described pre-driver is the pre-driver of travelling wave tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831520.7U CN205070981U (en) | 2015-10-26 | 2015-10-26 | Preceding stage driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831520.7U CN205070981U (en) | 2015-10-26 | 2015-10-26 | Preceding stage driver |
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| Publication Number | Publication Date |
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| CN205070981U true CN205070981U (en) | 2016-03-02 |
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| CN201520831520.7U Active CN205070981U (en) | 2015-10-26 | 2015-10-26 | Preceding stage driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245239A (en) * | 2015-10-26 | 2016-01-13 | 成都国光电气股份有限公司 | Preceding stage driver |
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- 2015-10-26 CN CN201520831520.7U patent/CN205070981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245239A (en) * | 2015-10-26 | 2016-01-13 | 成都国光电气股份有限公司 | Preceding stage driver |
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| GR01 | Patent grant |