CN115765768A - High-power pulse-waveform-adjustable navigation tube transmitter - Google Patents
High-power pulse-waveform-adjustable navigation tube transmitter Download PDFInfo
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- CN115765768A CN115765768A CN202211527056.3A CN202211527056A CN115765768A CN 115765768 A CN115765768 A CN 115765768A CN 202211527056 A CN202211527056 A CN 202211527056A CN 115765768 A CN115765768 A CN 115765768A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a high-power pulse waveform adjustable navigation tube transmitter, which comprises a frequency source circuit, a preceding stage driving amplification circuit, an attenuator, a final stage amplification synthesis circuit, a high-power circulator, a high-power filter and a coupling detection circuit which are connected in sequence, wherein the coupling detection circuit outputs a pulse waveform, and the high-power circulator is also connected with a receiver; a temperature sensor is arranged in the frequency source circuit, and the output waveform of the frequency source circuit is subjected to waveform adjustment according to different environmental temperatures; and adjusting the output waveform of the frequency source circuit in real time according to the output pulse waveform to enable the output pulse waveform of the transmitter to meet the index requirement. The invention realizes the linear output of the amplitude of the detection signal according to different emission output powers, so that the system can accurately judge the amplitude of the emission output power.
Description
Technical Field
The invention relates to the technical field of navigation management equipment, in particular to a high-power pulse waveform adjustable navigation management transmitter.
Background
The navigation management equipment generally needs a sum channel transmitter and a control (or difference channel) channel transmitter to amplify a radio frequency carrier signal, generally to a kilowatt level, to a sum channel antenna and a control (or difference channel) channel antenna. The navigation management inquiry equipment has strict requirements on indexes such as pulse power, pulse waveform (including pulse width, pulse rising edge, pulse falling edge, pulse top unevenness and pulse sequence unevenness) and pulse power back-off transmitted by a transmitter. The pulse rising edge is required to be 50 ns-100 ns, the pulse falling edge is required to be 50 ns-200 ns, and for a continuous string of pulses, the pulse rising edge and the pulse falling edge meet the index requirements, so that the debugging difficulty is great.
At present, main indexes of a transmitter of the air traffic control inquiry equipment are realized by a hardware circuit, and for some indexes with harsh requirements, the debugging difficulty is high, or partial indexes cannot be completely realized by the hardware circuit, and especially the requirements are met under different environments. The indexes of pulse width, pulse rising edge, pulse falling edge, power program control and the like of the transmitted waveform meet all requirements in different environments only through a hardware circuit, and the difficulty is high.
Disclosure of Invention
Aiming at the defects in the prior art, the high-power pulse waveform adjustable navigation tube transmitter provided by the invention solves the problem that the indexes of pulse width, pulse rising time, pulse falling time, pulse top unevenness and the like of transmitted pulses meet all requirements in different environments and are difficult to meet.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: a high-power pulse waveform adjustable navigation tube transmitter comprises a frequency source circuit, a preceding stage driving amplification circuit, an attenuator, a final stage amplification synthesis circuit, a high-power circulator, a high-power filter and a coupling detection circuit which are sequentially connected, wherein the coupling detection circuit outputs a pulse waveform, and the high-power circulator is also connected with a receiver;
a temperature sensor is arranged in the frequency source circuit, and the output waveform of the frequency source circuit is subjected to waveform adjustment according to different environmental temperatures;
and adjusting the output waveform of the frequency source circuit in real time according to the output pulse waveform to enable the output pulse waveform of the transmitter to meet the index requirement.
Further: the pre-stage driving amplification circuit comprises an amplifier, a programmable attenuator and an isolator.
Further, the method comprises the following steps: the number of the amplifier stages is determined according to the output power of the frequency source circuit and the driving power required by the final stage amplification and synthesis circuit.
Further: the final stage amplification and synthesis circuit selects N paths of amplifiers for amplification according to the output power, and performs power synthesis and output after the N paths of amplifiers are amplified according to the output power.
Further: the value of N is 1, 2 or 3.
Further: the high-power circulator is matched with the final stage amplification and synthesis circuit when the navigation tube is in a transmitting state, plays a role in protecting the final stage amplification and synthesis circuit, and provides a path from an antenna interface to a receiver when the navigation tube is in a receiving state.
Further, the method comprises the following steps: when the high-power filter is in a transmitting state on the aircraft navigation tube, the transmitted harmonic waves are suppressed, so that the index requirements of a transmitter on the harmonic waves are met.
Further, the method comprises the following steps: the coupling detection circuit converts a radio-frequency signal into a video signal when transmitting, the navigation tube judges whether the transmitter works normally according to the detection signal, judges whether the antenna port is reliably connected according to the standing wave signal, and reports the detection signal with different amplitudes to the navigation tube according to different output powers of the transmitter.
Further: the output waveform of the frequency source circuit is adjusted through a serial port.
Further, the method comprises the following steps: and realizing the power program control function through the program control attenuator and the grid voltage of the amplifier.
The invention has the beneficial effects that: the invention realizes a transmitter of the navigation management inquiry equipment by adjusting the waveform of the transmitted pulse through the serial port, and the output power and the pulse waveform (comprising pulse width, pulse rising edge, pulse falling edge, pulse top unevenness and pulse sequence unevenness) of the transmitter can be conveniently adjusted according to the change of different use environments (mainly temperature environments).
The invention realizes the linear output of the amplitude of the detection signal according to different emission output powers, so that the system can accurately judge the amplitude of the emission output power.
Drawings
FIG. 1 is a block diagram of an overall scheme of a navigation management transmitter according to the present invention;
FIG. 2 is a diagram of a transmit output waveform debug interface in accordance with the present invention;
fig. 3 is an actual view of the emission output waveform of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined by the appended claims, and all changes that can be made by the invention using the inventive concept are intended to be protected.
As shown in fig. 1, a high-power pulse-waveform-adjustable navigation tube transmitter mainly comprises a frequency source circuit, a pre-stage driving amplification circuit (including an amplifier, a program-controlled attenuator, an isolator, etc.), an attenuator, a final-stage amplification synthesis circuit, a high-power circulator, a high-power filter, and a coupler. The stage number of the power amplifier tube of the front stage drive amplifying circuit is determined according to the output power of the frequency source and the drive power required by the final stage amplifying and synthesizing circuit. The output of the preceding stage driving amplifying circuit is added with an isolator to ensure good matching with the final stage amplifying and synthesizing circuit. The final stage amplifying circuit can select single-path amplifier amplification, two-path amplifier amplification synthesis and three-path amplifier amplification synthesis according to the output power of the final port, and theoretically, N paths of amplifiers can be amplified according to the output power and then output in a power synthesis mode. The high-power circulator has two main functions, namely, when the aircraft pipe is in a transmitting state, the high-power circulator is matched with a final stage amplifying and synthesizing circuit to play a role in protecting the final stage amplifying and synthesizing circuit, and when the aircraft pipe is in a receiving state, a passage from an antenna interface to a receiver is provided. The high-power filter is mainly used for inhibiting transmitted harmonic waves when the air pipe is in a transmitting state so as to meet the index requirements of a transmitter on the harmonic waves. The coupling detection circuit mainly converts a radio-frequency signal into a video signal during transmission, the navigation tube judges whether the transmitter works normally according to the detection signal, judges whether the antenna port is reliably connected according to the standing wave signal, and reports the detection signal with different amplitudes to the navigation tube according to different output powers of the transmitter.
The pulse waveform transmitted by the navigation management transmitter requires that the pulse width error is not more than +/-100 ns, the pulse rise time (0.1A-0.9A) is 50 ns-100 ns, and the pulse drop time (0.9A-0.1A) is 50 ns-200 ns. Due to the following two main reasons, the transmitter hardware circuit shown in the figure I has great difficulty in debugging the transmitted pulse waveform in different temperature environments, or the pulse output waveform index of the navigation management transmitter cannot be met by independently depending on the hardware circuit for debugging. The main reasons are that three parameters of pulse width, pulse rising time and pulse falling time are mutually related, and the other is to improve the efficiency of the power amplifier tube, the power amplifier tube of the preceding stage driving amplifying circuit and the power amplifier tube in the final stage amplifying and synthesizing circuit are generally in a saturation output working state, and the waveform of the output pulse is compressed, thereby influencing the waveform of the output pulse.
The invention utilizes a serial port tool (not limited to a serial port) to adjust the output waveform of the frequency source in real time according to the pulse waveform output by the transmitter, so that the output waveform of the transmitter meets the index requirement. The frequency source circuit uses a temperature sensor, and the output waveform of the frequency source circuit can be adjusted according to different environmental temperatures so as to meet the requirement that the pulse waveform output by the transmitter meets the index requirement under the whole temperature working environment. The debugging interface is as shown in figure two, the 'rising edge turning point', 'falling edge turning point', 'rising edge stepping' and 'falling edge stepping' are respectively adjusted for the sum channel and the control channel at different temperatures, the pulse waveform of the corresponding channel can be realized, and the qualified data can be stored in the rest of FLASH. When the module is used, the data of the corresponding temperature is directly called, and the output pulse waveform is ensured to meet the index requirement. Fig. three shows that the navigation tube transmitter designed by the scheme outputs pulse waveforms with output power of 59.3dBm, pulse width 880ns, rising edge 88ns, falling edge 73ns and pulse top unevenness smaller than 1dB, so that the index requirements are met.
The navigation management transmitter generally needs to implement power back-off, and outputs detection signals with corresponding amplitudes at different powers to be reported to the navigation management. The invention can realize the power program control function by the program control attenuator in the preceding stage driving amplifying circuit and controlling the grid voltage of the power amplifying tube. The grid voltage of the power amplifier tube is controlled, the programmed attenuation amplitude can be roughly adjusted, and the output power of the transmitter can be finely adjusted by adjusting the programmed attenuator of the preceding stage drive amplifying circuit. The invention uses a detection diode for detecting the output of a transmitter, and selects a 1N5711 detection diode, a capacitor and a resistor circuit, and outputs corresponding detection voltages at different powers, wherein the detection voltage is 4.0V-5.0V at the full power, the detection voltage is 3.0V-4.0V at 3dB back, the detection voltage is 2.0V-3.0V at 6dB back, and the detection voltage is 1.0V-2.0V at 12dB back.
Claims (10)
1. A high-power pulse waveform adjustable navigation tube transmitter is characterized by comprising a frequency source circuit, a preceding stage driving amplification circuit, an attenuator, a final stage amplification synthesis circuit, a high-power circulator, a high-power filter and a coupling detection circuit which are sequentially connected, wherein the coupling detection circuit outputs a pulse waveform, and the high-power circulator is also connected with a receiver;
a temperature sensor is arranged in the frequency source circuit, and the output waveform of the frequency source circuit is subjected to waveform adjustment according to different environmental temperatures;
and adjusting the output waveform of the frequency source circuit in real time according to the output pulse waveform to enable the output pulse waveform of the transmitter to meet the index requirement.
2. The high power pulse-shape tunable navigation tube transmitter of claim 1, wherein the pre-driver amplification circuit comprises an amplifier, a programmable attenuator and an isolator.
3. The high power pulse shape tunable navigation tube transmitter according to claim 2, wherein the number of stages of the amplifier is determined according to the output power of the frequency source circuit and the driving power required by the final amplification combining circuit.
4. The high power pulse waveform tunable navigation tube transmitter of claim 1, wherein the final amplification and synthesis circuit selects N amplifiers for amplification according to the output power, and performs power synthesis and output after the N amplifiers are amplified according to the output power.
5. The high power pulse waveform tunable navigation tube transmitter of claim 4, wherein N is 1, 2 or 3.
6. The high power pulse shape tunable navigation tube transmitter of claim 1, wherein said high power circulator matches the final amplification combining circuit when the navigation tube is in a transmitting state, functions to protect the final amplification combining circuit, and provides access to the antenna interface to the receiver when the navigation tube is in a receiving state.
7. The high power pulse shape tunable navigation tube transmitter of claim 1, wherein said high power filter suppresses transmitted harmonics when the navigation tube is in a transmitting state to meet the specification requirements of the transmitter for the harmonics.
8. The tunable high power pulse waveform aviation tube transmitter of claim 1, wherein said coupling detector circuit converts the rf signal into a video signal during transmission, the aviation tube determines whether the transmitter is working normally according to the detection signal, determines whether the antenna port is reliably connected according to the standing wave signal, and the detection signal reports the detection signals with different amplitudes to the aviation tube according to the different output powers of the transmitter.
9. The high power pulse waveform tunable navigation aid transmitter according to claim 1, wherein an output waveform of said frequency source circuit is tuned via a serial port.
10. The high power pulse waveform tunable navigation tube transmitter of claim 2, wherein the power programming function is implemented by the programmable attenuator and a gate voltage of the amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211527056.3A CN115765768A (en) | 2022-12-01 | 2022-12-01 | High-power pulse-waveform-adjustable navigation tube transmitter |
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| CN202211527056.3A CN115765768A (en) | 2022-12-01 | 2022-12-01 | High-power pulse-waveform-adjustable navigation tube transmitter |
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| CN115765768A true CN115765768A (en) | 2023-03-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117895956A (en) * | 2024-03-15 | 2024-04-16 | 四川九洲电器集团有限责任公司 | Modulation method, system and storage medium for reducing transmitter background noise |
| CN117895957A (en) * | 2024-03-18 | 2024-04-16 | 四川九洲电器集团有限责任公司 | Debugging method based on excitation signal and adjustable transmitter |
| CN118018045A (en) * | 2024-04-09 | 2024-05-10 | 四川九洲电器集团有限责任公司 | Emission waveform correction method and system based on prefabricated pulse feedback |
-
2022
- 2022-12-01 CN CN202211527056.3A patent/CN115765768A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117895956A (en) * | 2024-03-15 | 2024-04-16 | 四川九洲电器集团有限责任公司 | Modulation method, system and storage medium for reducing transmitter background noise |
| CN117895956B (en) * | 2024-03-15 | 2024-05-31 | 四川九洲电器集团有限责任公司 | Modulation method, system and storage medium for reducing transmitter background noise |
| CN117895957A (en) * | 2024-03-18 | 2024-04-16 | 四川九洲电器集团有限责任公司 | Debugging method based on excitation signal and adjustable transmitter |
| CN117895957B (en) * | 2024-03-18 | 2024-05-31 | 四川九洲电器集团有限责任公司 | Debugging method based on excitation signal and adjustable transmitter |
| CN118018045A (en) * | 2024-04-09 | 2024-05-10 | 四川九洲电器集团有限责任公司 | Emission waveform correction method and system based on prefabricated pulse feedback |
| CN118018045B (en) * | 2024-04-09 | 2024-07-19 | 四川九洲电器集团有限责任公司 | Emission waveform correction method and system based on prefabricated pulse feedback |
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