CN104485895A - High-precision TR (transmitter-receiver) component with CA3140 amplifier - Google Patents
High-precision TR (transmitter-receiver) component with CA3140 amplifier Download PDFInfo
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Abstract
The invention discloses a high-precision TR (transmitter-receiver) component with a CA3140 amplifier. The high-precision TR component comprises a circulator, a switch limiter, a low-noise amplifier, a first filter, a first power amplifier, an attenuator, a transmitter-receiver switch, a third power amplifier, a second filter, a limiter and a second power amplifier. By the aid of multiple amplification and multiple filtering, the signal-to-noise ratio of a signal is ensured, the gain of the signal is also ensured, a certain power is provided for subsequent signal analysis or signal transmission, a noise coefficient and the gain of each amplifier are limited, new noise is prevented, original gain only needing one-stage amplification is decomposed into two stages, the gain is amplified, and the noise coefficient and the purity of the signal are ensured.
Description
Technical field
The invention discloses a kind of high accuracy TR assembly using CA3140 amplifier, belong to signal processing technology field.
Background technology
T/R is the abbreviation of Transmitter and Receiver.Refer to the part between video and antenna in a wireless transceiver system under T/R assembly ordinary meaning, i.e. T/R assembly one termination antenna, in a termination, video processing unit just forms a wireless transceiver system.
In modern Connectors for Active Phased Array Radar technology, T/R assembly is very crucial parts, and the quality of its design determines reliability and the cost of whole radar to a great extent.In the design of T/R assembly receive path, for the consideration to system noise factor, need to settle microwave low-noise amplifier to improve the sensitivity of reception in front end.In the design of low noise amplifier in the past, input-output adapt ation network does not generally consider the requirement of Out-of-band rejection, main it is considered that realize optimum noise and power output coupling.
T/R assembly forms primarily of the complicated circuit system such as phase shifter, attenuator, solid state power amplifier, amplitude limiter and low noise amplifier, circulator, filter, logic drive circuit, amplifier power supply.Technical covering microwave circuit, the aspects such as digital control circuit.In large-scale Connectors for Active Phased Array Radar, the quantity of T/R assembly is thousands of, and its performance directly affects the performance index of radar antenna.Therefore, according to the requirement that radar is overall, developing performance, volume, weight, reliability etc., to meet the T/R assembly of index request particularly crucial.T/R assembly is when Mass production, and quantity is large, test index is many, pending data volume is large, component control signal is numerous and diverse.
Connectors for Active Phased Array Radar obtains development at full speed in recent years, has higher requirement to its core component T/R assembly, requires constantly to promote to key indexs such as power, efficiency, noises.
The patent No. is 201310584706.2, patent name is a kind of S-band miniature digital T/R component design method, this patent proposes the problem of solution for problem in prior art, but how this patent does not just reduce the technological means that noise and power propose effectively to deal with problems.
The patent No. is 201410319094.9, patent name is dual polarization multi-functional ultra broadband T/R assembly, this patent indicates that the problem of prior art proposes the technical scheme of ultra broadband, but there is certain problem when enforcement in the program, the bandwidth of ultra-wide must attract the rising of noise factor, introduce more noise, affect the accuracy of signal.
Meanwhile, in T/R assembly conventional in prior art, noise factor still cannot be effectively reduced, and power can not be too high simultaneously, and these problems all require further improvement.CA3140 high input impedance operational amplifier; that the high-tension operational amplifier of a kind of BiMOS of Radio Corporation of America's development is on a slice integrated chip; transistor input circuit in the grid (on PMOS) of this CA3140A and CA3140 BiMOS function of operational amplifier protection MOSFET provides very high input impedance, extremely low input current and high speed performance.Operating power voltage is no matter list or duplicate supply from 4V to 36V(), it combines piezoelectricity PMOS transistor technique and the two advantage of awarding transistor of high voltage. the amplifier of (complementary symmetry metal oxide semiconductor) excellent performance.
Summary of the invention
Technical problem to be solved by this invention is: for the defect of prior art, a kind of high accuracy TR assembly using CA3140 amplifier is provided, this assembly adopts multiple amplification and multiple filter, with noise factor and the gain of each amplifier of limit, prevent from introducing new noise, originally the gain only needing one-level to amplify is split into two-stage simultaneously, while ensureing gain amplifier, ensure noise factor.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Use a high accuracy TR assembly for CA3140 amplifier, comprise circulator, switch amplitude limiter, low noise amplifier, the first filter, the first power amplifier, attenuator, transmit-receive switch, the 3rd power amplifier, the second filter, amplitude limiter, the second power amplifier;
Described circulator is connected with switch amplitude limiter, the second power amplifier respectively;
Described switch amplitude limiter, low noise amplifier, the first filter, the first power amplifier, attenuator, transmit-receive switch are connected successively;
Described transmit-receive switch, the 3rd power amplifier, the second filter, amplitude limiter, the second power amplifier are connected successively;
Received signal strength enters switch amplitude limiter through circulator, the amplitude of switch amplitude limiter restriction Received signal strength, enter low noise amplifier, low noise amplifier leaches clutter through the first filter after carrying out power amplification to signal, and the signal after filtering clutter enters to enter after attenuator carries out amplitude fading after the first power amplifier carries out power amplification again sends into transmit-receive switch;
Transmit and after transmit-receive switch, enter the 3rd power amplifier carry out power amplification, then filtering is carried out through the second filter, then carry out amplitude limit control through amplitude limiter, then carry out power amplification through the second power amplifier, finally enter circulator and export.
Described first to the 3rd power amplifier particular circuit configurations includes the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11 electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first diode, the second diode, model are the amplifier chip of CA3140, wherein:
One end of described first electric capacity connects one end of the 4th resistance, one end of the 3rd resistance, one end of the 7th electric capacity, one end of the 5th resistance respectively; One end of other end difference the 3rd electric capacity of described 4th resistance, one end of the 4th electric capacity, the negative electrode of the first diode, the 5th pin of amplifier chip; First pin of described amplifier chip connects one end of the 8th electric capacity; The other end of described 8th electric capacity connects the other end of the 3rd resistance; Second pin of described amplifier chip connects one end of the second electric capacity, one end of the second resistance, one end of the first resistance respectively; The other end of described second resistance connects one end of the 9th electric capacity, one end of the tenth electric capacity respectively; The other end of described 9th electric capacity connects the other end of the 7th electric capacity, the other end of the 5th resistance respectively; The other end of described tenth electric capacity connects the 3rd pin of amplifier chip, the anode of the second diode, one end of the 11 electric capacity respectively; The negative electrode of described second diode connects the other end of the first resistance, the anode of the first diode, the 4th pin of amplifier chip, one end of the 6th resistance, one end of the 5th electric capacity respectively; The other end of described 6th resistance connects one end of the 6th electric capacity; The other end of described 6th electric capacity connects the other end of the 11 electric capacity.
As further prioritization scheme of the present invention, the model of described circulator is HXJ33-20DB.
As further prioritization scheme of the present invention, the model of described switch amplitude limiter is YGN11131-1.
As further prioritization scheme of the present invention, described first filter is Surface Acoustic Wave Filter, and the model of described Surface Acoustic Wave Filter is F11315M.
As further prioritization scheme of the present invention, the LC filter that described second filter adopts.
As further prioritization scheme of the present invention, the gain of described low noise amplifier is 15dB, and noise factor is 0.2dB.
As further prioritization scheme of the present invention, the gain of described first power amplifier is 20dB, and noise factor is 1.5dB.
As further prioritization scheme of the present invention, the gain of described second power amplifier is 15dB, and noise factor is 1dB.
As further prioritization scheme of the present invention, the gain of described 3rd power amplifier is 15dB, and noise factor is 1.2dB.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: this assembly of the present invention adopts multiple amplification and multiple filter, also the gain of signal is ensured while ensureing the signal to noise ratio of signal, for the transmission of follow-up signal analysis or signal provides certain power, with noise factor and the gain of each amplifier of limit, prevent from introducing new noise, originally the gain only needing one-level to amplify is split into two-stage simultaneously, ensure noise factor while ensureing gain amplifier, ensure the degree of purity of signal.
Accompanying drawing explanation
Fig. 1 is model calling schematic diagram of the present invention.
Fig. 2 is in the present invention, the circuit diagram of power amplifier,
Wherein: C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, R1, R2, R3, R4, R5, R6, D1, D2, U1 represents the first electric capacity respectively, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, tenth electric capacity, 11 electric capacity, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, first diode, second diode, model is the amplifier chip of CA3140.
Embodiment
Be described below in detail embodiments of the present invention, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Those skilled in the art of the present technique are understandable that, the correlation module related in the present invention and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present invention is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the present invention is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and specialized designs and manufacture, or also can adopt the known device in all-purpose computer or other known hardware devices.Described all-purpose computer activates or reconstructs with having storage procedure Selection within it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Circuit module connection diagram of the present invention as shown in Figure 1, use a high accuracy TR assembly for CA3140 amplifier, comprise circulator, switch amplitude limiter, low noise amplifier, the first filter, the first power amplifier, attenuator, transmit-receive switch, the 3rd power amplifier, the second filter, amplitude limiter, the second power amplifier;
Described circulator is connected with switch amplitude limiter, the second power amplifier respectively;
Described switch amplitude limiter, low noise amplifier, the first filter, the first power amplifier, attenuator, transmit-receive switch are connected successively and form receiver;
Described transmit-receive switch, the 3rd power amplifier, the second filter, amplitude limiter, the second power amplifier are connected successively and form transmitting chain;
One end of circulator connects antenna, the collection of letters of reception number is entered switch amplitude limiter through circulator by antenna, the amplitude of switch amplitude limiter restriction Received signal strength, thus protect the safety of the circuit of its rear class, signal enters low noise amplifier, low noise amplifier leaches clutter through the first filter after carrying out power amplification to signal, the gain of low noise amplifier is 15dB, noise factor is 0.2dB, enlarging function is divided into two parts by the receiver of T/R assembly, low noise amplifier and the first power amplifier, low noise amplifier is as the front end of the first power amplifier, the introducing of noise is reduced as much as possible while signal is amplified, thus serve conclusive effect for the noise accepting link, first power amplifier also selects low noise as far as possible, the amplifier that gain is suitable, the gain of the first power amplifier is selected to be 20dB in the present embodiment, noise factor is 1.5dB, while ensureing enough gains, noise factor is little as far as possible, ensure to accept the pure of signal in link, signal after this filtering clutter enters to enter after attenuator carries out amplitude fading after the first power amplifier carries out power amplification again sends into transmit-receive switch, the amplitude of attenuator to the signal after two-stage is amplified limits, also to protect the circuit of rear class while guaranteed output, can not power excessive, burn circuit,
Transmit and after transmit-receive switch, enter the 3rd power amplifier carry out power amplification, the gain of the 3rd power amplifier is 15dB, noise factor is 1.2dB, select as far as possible gain can not excessive can not be too small amplifier, ensure the gain of signal, also to reduce the introducing of noise as far as possible, then filtering is carried out through the second filter, the LC filter that second filter adopts, it is simple that LC filter has structure, with low cost, operational reliability is higher, the advantages such as operating cost is lower, then amplitude limit control is carried out through amplitude limiter, power amplification is carried out again through the second power amplifier, the gain of the second power amplifier is 15dB, noise factor is 1dB, finally enter circulator to export.
The circuit structure of power amplifier as shown in Figure 2, described first to the 3rd power amplifier particular circuit configurations includes the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11 electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first diode, the second diode, model are the amplifier chip of CA3140, wherein:
One end of described first electric capacity connects one end of the 4th resistance, one end of the 3rd resistance, one end of the 7th electric capacity, one end of the 5th resistance respectively; One end of other end difference the 3rd electric capacity of described 4th resistance, one end of the 4th electric capacity, the negative electrode of the first diode, the 5th pin of amplifier chip; First pin of described amplifier chip connects one end of the 8th electric capacity; The other end of described 8th electric capacity connects the other end of the 3rd resistance; Second pin of described amplifier chip connects one end of the second electric capacity, one end of the second resistance, one end of the first resistance respectively; The other end of described second resistance connects one end of the 9th electric capacity, one end of the tenth electric capacity respectively; The other end of described 9th electric capacity connects the other end of the 7th electric capacity, the other end of the 5th resistance respectively; The other end of described tenth electric capacity connects the 3rd pin of amplifier chip, the anode of the second diode, one end of the 11 electric capacity respectively; The negative electrode of described second diode connects the other end of the first resistance, the anode of the first diode, the 4th pin of amplifier chip, one end of the 6th resistance, one end of the 5th electric capacity respectively; The other end of described 6th resistance connects one end of the 6th electric capacity; The other end of described 6th electric capacity connects the other end of the 11 electric capacity.
The gain of signal amplification is divided multistage carrying out by the present invention, thus avoid one-stage amplifier in the past, amplifying power is excessive, the problem that noise factor is poor, is disperseed problem, is solved by multistage cooperation, effectively solve T/R assembly noise excessive, the problem that power is excessive, improves the signal to noise ratio of T/R assembly, is more applicable to the requirement of prior art.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solution of the present invention.
Claims (9)
1. use a high accuracy TR assembly for CA3140 amplifier, it is characterized in that: comprise circulator, switch amplitude limiter, low noise amplifier, the first filter, the first power amplifier, attenuator, transmit-receive switch, the 3rd power amplifier, the second filter, amplitude limiter, the second power amplifier;
Described circulator is connected with switch amplitude limiter, the second power amplifier respectively;
Described switch amplitude limiter, low noise amplifier, the first filter, the first power amplifier, attenuator, transmit-receive switch are connected successively;
Described transmit-receive switch, the 3rd power amplifier, the second filter, amplitude limiter, the second power amplifier are connected successively;
Received signal strength enters switch amplitude limiter through circulator, the amplitude of switch amplitude limiter restriction Received signal strength, enter low noise amplifier, low noise amplifier leaches clutter through the first filter after carrying out power amplification to signal, and the signal after filtering clutter enters to enter after attenuator carries out amplitude fading after the first power amplifier carries out power amplification again sends into transmit-receive switch;
Transmit and after transmit-receive switch, enter the 3rd power amplifier carry out power amplification, then filtering is carried out through the second filter, then carry out amplitude limit control through amplitude limiter, then carry out power amplification through the second power amplifier, finally enter circulator and export;
Described first to the 3rd power amplifier particular circuit configurations includes the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11 electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first diode, the second diode, model are the amplifier chip of CA3140, wherein:
One end of described first electric capacity connects one end of the 4th resistance, one end of the 3rd resistance, one end of the 7th electric capacity, one end of the 5th resistance respectively; One end of other end difference the 3rd electric capacity of described 4th resistance, one end of the 4th electric capacity, the negative electrode of the first diode, the 5th pin of amplifier chip; First pin of described amplifier chip connects one end of the 8th electric capacity; The other end of described 8th electric capacity connects the other end of the 3rd resistance; Second pin of described amplifier chip connects one end of the second electric capacity, one end of the second resistance, one end of the first resistance respectively; The other end of described second resistance connects one end of the 9th electric capacity, one end of the tenth electric capacity respectively; The other end of described 9th electric capacity connects the other end of the 7th electric capacity, the other end of the 5th resistance respectively; The other end of described tenth electric capacity connects the 3rd pin of amplifier chip, the anode of the second diode, one end of the 11 electric capacity respectively; The negative electrode of described second diode connects the other end of the first resistance, the anode of the first diode, the 4th pin of amplifier chip, one end of the 6th resistance, one end of the 5th electric capacity respectively; The other end of described 6th resistance connects one end of the 6th electric capacity; The other end of described 6th electric capacity connects the other end of the 11 electric capacity.
2. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: the model of described circulator is HXJ33-20DB.
3. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: the model of described switch amplitude limiter is YGN11131-1.
4. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 3, is characterized in that: described first filter is Surface Acoustic Wave Filter, and the model of described Surface Acoustic Wave Filter is F11315M.
5. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: described second filter adopts LC filter.
6. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: the gain of described low noise amplifier is 15dB, and noise factor is 0.2dB.
7. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: the gain of described first power amplifier is 20dB, and noise factor is 1.5dB.
8. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: the gain of described second power amplifier is 15dB, and noise factor is 1dB.
9. a kind of high accuracy TR assembly improving low noise amplifier structure as claimed in claim 1, is characterized in that: the gain of described 3rd power amplifier is 15dB, and noise factor is 1.2dB.
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| CN201410657229.2A CN104485895B (en) | 2014-11-18 | 2014-11-18 | High-precision TR (transmitter-receiver) component with CA3140 amplifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104953959A (en) * | 2015-06-05 | 2015-09-30 | 苏州经贸职业技术学院 | Simple stabilizing amplifier |
| CN107809219A (en) * | 2017-10-26 | 2018-03-16 | 成都西井科技有限公司 | The adjustable low-frequency power amplifier of attenuation amplitude |
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| CN107809219A (en) * | 2017-10-26 | 2018-03-16 | 成都西井科技有限公司 | The adjustable low-frequency power amplifier of attenuation amplitude |
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| Publication number | Publication date |
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| CN104485895B (en) | 2017-05-17 |
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