CN202210779U - High-power low-noise limiting amplifier with favorable cooling performance - Google Patents
High-power low-noise limiting amplifier with favorable cooling performance Download PDFInfo
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- CN202210779U CN202210779U CN2011203630086U CN201120363008U CN202210779U CN 202210779 U CN202210779 U CN 202210779U CN 2011203630086 U CN2011203630086 U CN 2011203630086U CN 201120363008 U CN201120363008 U CN 201120363008U CN 202210779 U CN202210779 U CN 202210779U
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- transmission line
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- limiting amplifier
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- power supply
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Abstract
The utility model discloses a high-power low-noise limiting amplifier with favorable cooling performance, which comprises a box body and an internal circuit, wherein, the box body comprises a trough body (1), and a box cover (2) for sealing the trough body (1); a signal access port (3), a control port (8), an RF (Radio Frequency) output port (9) and a power input port (10) are formed on the side wall of the trough body (1); the internal circuit comprises a coaxial transmission line (6), a microtrip transmission line (7), a low-noise amplifier, a filter and an RF connector which are sequentially connected; polytetrafluoroethylene insulating medium is filled at the periphery of the coaxial transmission line (6); and the power input port (10) is connected with a power supply processing unit. The limiting amplifier adopting the above structure can radiate better without the aid of additional cooling devices, has a smaller size, is convenient to install and use, and reduces the design difficulty.
Description
Technical field
The utility model relates to a kind of limiting amplifier, specifically is a kind of high-power low-noise limiting amplifier with good heat radiating property.
Background technology
Low noise amplifier, i.e. the very low amplifier of noise factor, generally as the high frequency or the intermediate-frequency preamplifier of all kinds of radio receivers, and the amplifying circuit of high sensitivity electron detection equipment.In the occasion of amplifying small-signal, the noise of amplifier self maybe be very serious to the interference of signal, therefore hopes to reduce this noise, to improve the signal to noise ratio of output.
At present; When known high power amplitude limit amplification module receives high-power signal, the signal energy part diode reflective that is limited, and another part diode that is limited absorbs; Make diode and amplitude limiter circuit produce a large amount of heats; Cause the rising of electronic devices and components operating ambient temperature, influence the components and parts operate as normal, the long-term work meeting causes components and parts to burn out.To domestic and international relevant amplitude limit amplification module circuit product, the mode of heat radiation mainly contains following three kinds, and the one, adopt the mode that increases that product Bottom of box body metal volume improves area of dissipation or increase the fin device at product casing; The 2nd, be employed in the main heat dissipation region installation of product metal folded catheter water circularly cooling mode and make working temperature keep balance; The 3rd, utilize wind circularly cooling mode to solve the rising of temperature at main heat dissipation region installation fan of product or blast pipe.More than three kinds of radiating modes all can to cause small product size to increase excessive, also increase product cost simultaneously, be unfavorable for installing and using, also increased difficulty for design.
The utility model content
The utility model provides a kind of high-power low-noise limiting amplifier with good heat radiating property, has solved in the past that limiting amplifier need add heat abstractor, thereby causes small product size excessive, is unfavorable for installing and using, and increases the problem of design difficulty simultaneously.
The utility model is that the technical solution problem mainly realizes through following technical scheme: a kind of high-power low-noise limiting amplifier with good heat radiating property comprises box body and internal circuit, the lid that box body comprises cell body and seals this cell body; The sidewall of cell body is provided with signal access port, control port, radio frequency delivery outlet and power supply input port; Said internal circuit comprises coaxial transmission line, microstrip transmission line, low noise amplifier, filter and the radio frequency connector of series connection successively, and the top of coaxial transmission line is connected with the signal access port, and radio frequency connector is connected with the radio frequency delivery outlet; Be connected with high-power PIN diode on the coaxial transmission line; Be socketed with the radiating block screw rod on the high-power PIN diode, be connected with limiter diode on the microstrip transmission line, the positive pole of limiter diode is connected with microstrip transmission line; The minus earth of limiter diode; Be filled with the teflon insulation medium around the said coaxial transmission line, the power supply input port is connected with the power supply processing unit, and the power supply processing unit is connected with filter with low noise amplifier respectively; The power supply processing unit comprises transformer and bridge rectifier, and transformer and bridge rectifier are connected each other.Treated power supply signal is inserted in the power supply input port, for amplifier and filter provide energy; Because a high power signals energy part is by diode reflective; And another part is absorbed by diode; Make diode and amplitude limiter circuit produce a large amount of heats; Cause the rising of electronic devices and components operating ambient temperature, this moment, radiating block screw rod and teflon insulation medium can both play good heat-radiation effect.
Said coaxial transmission line is the inner wire bar metal bar that is provided with blind hole, and the positive pole of high-power PIN diode is connected the minus earth of high-power PIN diode through blind hole with inner wire bar metal bar.
Blind hole on the said inner wire bar metal bar has 2N, and wherein N is a positive integer, and per two blind holes should be one group relatively.
At least be connected with 1 group of high-power PIN diode on the said inner wire bar metal bar.
Distance between the high-power PIN diode of said adjacent set is 1/8th of a wavelength.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) connects high-power PIN diode on the coaxial line of the utility model, connected limiter diode on the microstrip line, all played good amplitude limit effect; Filled the teflon insulation medium around the coaxial line, socket radiating block screw rod on diode has simultaneously improved the thermal diffusivity of diode and amplitude limiter circuit effectively, makes the more stable work of whole amplitude limiter circuit.
(2) the utility model is simple in structure, is easy to realize having stronger practicality.
Description of drawings
Fig. 1 is the front view of the box body of the utility model;
Fig. 2 is the rearview of the box body of the utility model;
Fig. 3 is the structural representation of the internal circuit of the utility model;
Fig. 4 is the electrical block diagram of the power supply processing unit of the utility model.
Pairing Reference numeral is in the accompanying drawing: 1, cell body, 2, lid, 3, the signal access port, 4, the radiating block screw rod, 5, high-power PIN diode, 6, coaxial transmission line, 7, microstrip transmission line, 8, control port, 9, the radio frequency delivery outlet, 10, the power supply input port.
Embodiment
Below in conjunction with embodiment the utility model is done further to specify, but the execution mode of the utility model is not limited thereto.
Embodiment:
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the utility model comprises box body and internal circuit, and the lid 2 that box body comprises cell body 1 and seals this cell body 1, the sidewall of cell body 1 are provided with signal access port 3, control port 8, radio frequency delivery outlet 9 and power supply input port 10.
The internal circuit of present embodiment comprises coaxial transmission line 6, microstrip transmission line 7, low noise amplifier, filter and the radio frequency connector of series connection successively, and the top of coaxial transmission line 6 is connected with signal access port 3, and radio frequency connector is connected with radio frequency delivery outlet 9.
Be filled with the teflon insulation medium around the coaxial transmission line 6 of present embodiment; Coaxial transmission line 6 is for being provided with the inner wire bar metal bar of blind hole; Blind hole on the inner wire bar metal bar has 2N, and wherein N is a positive integer, and per two blind holes should be one group relatively; The positive pole of high-power PIN diode 5 is connected with inner wire bar metal bar through blind hole; The minus earth of high-power PIN diode 5, the distance between the high-power PIN diode 5 of adjacent set is 1/8th of a wavelength, is socketed with radiating block screw rod 4 on the high-power PIN diode 5.
As preferably, be connected with three groups of high-power PIN diodes 5 on the inner wire bar metal bar of present embodiment.
7 are connected with limiter diode on the microstrip transmission line of present embodiment, and the positive pole of limiter diode is connected with microstrip transmission line 7, the minus earth of limiter diode,
The power supply input port 10 of present embodiment is connected with the power supply processing unit, and the power supply processing unit is connected with filter with low noise amplifier respectively, and the power supply processing unit comprises transformer and bridge rectifier, and transformer and bridge rectifier are connected each other.
The operation principle of the utility model is: at first; Signal then successively through the amplitude limiter circuit of coaxial transmission line style, the amplitude limiter circuit of microstrip transmission line type, passes through the effect of amplifier and filter again through 3 inputs of signal access port; Export from the radio frequency delivery outlet through radio frequency connector at last; Because a signal energy part is by diode reflective, and another part is absorbed by diode, makes diode and amplitude limiter circuit produce a large amount of heats; Cause the rising of electronic devices and components operating ambient temperature, this moment, radiating block screw rod 4 can both play good heat-radiation effect with the teflon insulation medium.
As stated, then can realize the utility model well.
Claims (5)
1. high-power low-noise limiting amplifier with good heat radiating property; Comprise box body and internal circuit; The lid (2) that box body comprises cell body (1) and seals this cell body (1), the sidewall of cell body (1) are provided with signal access port (3), control port (8), radio frequency delivery outlet (9) and power supply input port (10), and said internal circuit comprises coaxial transmission line (6), microstrip transmission line (7), low noise amplifier, filter and the radio frequency connector of series connection successively; The top of coaxial transmission line (6) is connected with signal access port (3); Radio frequency connector is connected with radio frequency delivery outlet (9), is connected with high-power PIN diode (5) on the coaxial transmission line (6), is socketed with radiating block screw rod (4) on the high-power PIN diode (5); Microstrip transmission line is connected with limiter diode on (7); The positive pole of limiter diode is connected with microstrip transmission line (7), and the minus earth of limiter diode is characterized in that: be filled with the teflon insulation medium around the said coaxial transmission line (6); Power supply input port (10) is connected with the power supply processing unit; The power supply processing unit is connected with filter with low noise amplifier respectively, and the power supply processing unit comprises transformer and bridge rectifier, and transformer and bridge rectifier are connected each other.
2. a kind of high-power low-noise limiting amplifier according to claim 1 with good heat radiating property; It is characterized in that: said coaxial transmission line (6) is for being provided with the inner wire bar metal bar of blind hole; The positive pole of high-power PIN diode (5) is connected the minus earth of high-power PIN diode (5) through blind hole with inner wire bar metal bar.
3. a kind of high-power low-noise limiting amplifier with good heat radiating property according to claim 2 is characterized in that: the blind hole on the said inner wire bar metal bar has 2N, and wherein N is a positive integer, and per two blind holes should be one group relatively.
4. a kind of high-power low-noise limiting amplifier with good heat radiating property according to claim 3 is characterized in that: be connected with 1 group of high-power PIN diode (5) at least on the said inner wire bar metal bar.
5. according to each described a kind of high-power low-noise limiting amplifier with good heat radiating property of claim 1 ~ 4, it is characterized in that: the distance between the high-power PIN diode (5) of said adjacent set is 1/8th of a wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203630086U CN202210779U (en) | 2011-09-26 | 2011-09-26 | High-power low-noise limiting amplifier with favorable cooling performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203630086U CN202210779U (en) | 2011-09-26 | 2011-09-26 | High-power low-noise limiting amplifier with favorable cooling performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202210779U true CN202210779U (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203630086U Expired - Fee Related CN202210779U (en) | 2011-09-26 | 2011-09-26 | High-power low-noise limiting amplifier with favorable cooling performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202210779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723914A (en) * | 2012-07-10 | 2012-10-10 | 中国船舶重工集团公司第七二四研究所 | L-band and S-band ultra-wideband high-power amplitude-limiting low-noise amplifier |
| CN111262078A (en) * | 2020-01-22 | 2020-06-09 | 北京格润海泰科技有限公司 | High-power-resistant radio frequency connector structure |
-
2011
- 2011-09-26 CN CN2011203630086U patent/CN202210779U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723914A (en) * | 2012-07-10 | 2012-10-10 | 中国船舶重工集团公司第七二四研究所 | L-band and S-band ultra-wideband high-power amplitude-limiting low-noise amplifier |
| CN111262078A (en) * | 2020-01-22 | 2020-06-09 | 北京格润海泰科技有限公司 | High-power-resistant radio frequency connector structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20200926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |