CN204334780U - The finned tuner of a kind of C-band - Google Patents
The finned tuner of a kind of C-band Download PDFInfo
- Publication number
- CN204334780U CN204334780U CN201520001616.0U CN201520001616U CN204334780U CN 204334780 U CN204334780 U CN 204334780U CN 201520001616 U CN201520001616 U CN 201520001616U CN 204334780 U CN204334780 U CN 204334780U
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- China
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- cuboid box
- box portion
- tuner
- seal groove
- cylindrical pipe
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Abstract
The utility model discloses the finned tuner of a kind of C-band, comprise metal shell and fin radome, described metal shell comprises the cylindrical pipe portion as waveguide and the cuboid box portion for mounting circuit boards, described cylindrical pipe portion one end open, the other end are cecum, described cuboid box portion's open top, bottom are provided with diapire, the diapire in described cuboid box portion is fixedly connected with the cecum in described cylindrical pipe portion, and described cuboid box portion is parallel to the axis in described cylindrical pipe portion, the top in described cuboid box portion coordinates with described fin radome; The circuit board installed in described cuboid box portion comprises triode, voltage stabilizing didoe, band pass filter, the crystal resonator that signal amplifies, and for phase-locked, mixing and the integrated circuit (IC) chip of amplifying power.The finned tuner of a kind of C-band described in the utility model, adaptive functions are integrated to be developed with volume microminiaturization ground, and during work, range of temperature is little, and the reception of tuner is good.
Description
Technical field
The utility model relates to the finned tuner of a kind of C-band, belongs to the outer cell fabrication techniques field of satellite signal receiving canyon.
Background technology
Tuner is in television receiver circuit foremost, and usually by input circuit, high-frequency amplifier, local oscillator and frequency mixer form; The effect of tuner from the signal of telecommunication of antenna induction, selects required high-frequency TV signal and amplifies, and produces image medium-frequency signal and sound accompaniment first intermediate-freuqncy signal by mixer stage, and they delivered in image and put passage and amplify.The local frequency of tuner is easily acted upon by temperature changes, although adopt AFC circuit calibration to overcome the problems referred to above, but along with tuner function i ntegration and volume microminiaturization ground development, the caloric value of tuner internal circuit unit increase gradually and be conducive to dispel the heat space and surface area constantly reduce, range of temperature is comparatively large and rate of change is very fast in use to make tuner, have impact on the noise factor of tuner significantly, and that the problems referred to above especially embody on C-band tuner is comparatively obvious.
Utility model content
The utility model for the deficiency that prior art exists, provides a kind of C-band finned tuner just, and adaptive functions are integrated to be developed with volume microminiaturization ground, and during work, range of temperature is little, improves the reception of tuner, meets actual operation requirements.
For solving the problem, technical solution adopted in the utility model is as follows:
The finned tuner of a kind of C-band, comprise: metal shell and fin radome, described metal shell comprises the cylindrical pipe portion as waveguide and the cuboid box portion for mounting circuit boards, described cylindrical pipe portion one end open, the other end are cecum, described cuboid box portion's open top, bottom are provided with diapire, the diapire in described cuboid box portion is fixedly connected with the cecum in described cylindrical pipe portion, and described cuboid box portion is parallel to the axis in described cylindrical pipe portion, the top in described cuboid box portion coordinates with described fin radome;
The circuit board installed in described cuboid box portion comprises: the first triode amplified for perpendicular polarization signal one-level, for the second triode that horizontal polarization signals one-level is amplified, for the 3rd triode that perpendicular polarization signal and horizontal polarization signals secondary amplify, for according to the difference of input voltage with export different voltage thus carry out horizontal polarization signals and perpendicular polarization signal switching and play the voltage stabilizing didoe of pressure stabilization function, for carrying out the band pass filter of He Ne laser to secondary amplifying signal, for generation of the crystal resonator of resonance frequency, with for phase-locked, mixing the integrated circuit (IC) chip of amplifying power.
As the improvement of technique scheme, top and the described fin radome in described cuboid box portion are connected and fixed by construction bolt; The top in described cuboid box portion is provided with installation screw one and seal groove one, described seal groove one is rectangle, and installation screw one is arranged at the inner side of described seal groove one, described fin radome is provided with the installation screw two corresponding with described seal groove one position to described installation screw one and described seal groove two; Described construction bolt coordinates with described installation screw one through described installation screw two, and described seal groove one and described seal groove two mutually fasten and form sealing strip chamber, are provided with rubber seal in described sealing strip chamber.
Compared with prior art, implementation result of the present utility model is as follows for the utility model:
The finned tuner of a kind of C-band described in the utility model, by the radome adopting fin radome to replace ordinary flat structure of the prior art, radome heat radiation contact area is increased, operationally the temperature at self each position and ambient temperature are close to make tuner, the temperature contrast at different circuit position is less, avoids the local frequency of temperature sharply variable effect tuner; Thus adaptive functions are integrated and the development of volume microminiaturization ground, during work, range of temperature is little, improves the reception of tuner, make the change curve of gain and frequency smooth, and overall noise coefficient is lower, meets actual operation requirements.
Accompanying drawing explanation
Fig. 1 is a kind of C-band described in the utility model finned tuner side structure schematic diagram;
Fig. 2 is the plan structure schematic diagram of a kind of C-band described in the utility model finned tuner when not installing fin radome;
Fig. 3 is the electrical block diagram of the finned tuner of a kind of C-band described in the utility model;
Fig. 4 is the gain performance test curve of the utility model specific embodiment;
Fig. 5 is the noiseproof feature test curve of the utility model specific embodiment;
Fig. 6 is the gain performance test curve of the utility model comparative examples;
Fig. 7 is the noiseproof feature test curve of the utility model comparative examples.
Embodiment
Below in conjunction with specific embodiments content of the present utility model is described.
Specific embodiment
As depicted in figs. 1 and 2, be the finned tuner structure schematic diagram of a kind of C-band described in the present embodiment.The finned tuner of a kind of C-band described in the utility model, comprise: metal shell and fin radome 1, described metal shell comprises the cylindrical pipe portion 2 as waveguide and the cuboid box portion 3 for mounting circuit boards, described cylindrical pipe portion 2 one end open, the other end is cecum, described cuboid box portion 3 open top, bottom is provided with diapire, the diapire in described cuboid box portion 3 is fixedly connected with the cecum in described cylindrical pipe portion 2, and described cuboid box portion 3 is parallel to the axis in described cylindrical pipe portion 2, the top in described cuboid box portion 3 coordinates with described fin radome 1.Particularly, the top in described cuboid box portion 3 and described fin radome 1 are connected and fixed by construction bolt; The top in described cuboid box portion 3 is provided with installation screw 1 and seal groove 1, described seal groove 1 is rectangle, and installation screw 1 is arranged at the inner side of described seal groove 1, described fin radome 1 is provided with the installation screw two corresponding with described seal groove 1 position to described installation screw 1 and described seal groove two; Described construction bolt coordinates with described installation screw 1 through described installation screw two, and described seal groove 1 and described seal groove two mutually fasten and form sealing strip chamber, are provided with rubber seal in described sealing strip chamber.
As shown in Figure 3, the circuit board installed in described cuboid box portion 3 comprises: the first triode Q1 amplified for perpendicular polarization signal one-level, for the second triode Q2 that horizontal polarization signals one-level is amplified, for the 3rd triode Q3 that perpendicular polarization signal and horizontal polarization signals secondary amplify, for according to the difference of input voltage with export different voltage thus carry out horizontal polarization signals and perpendicular polarization signal switching and play the voltage stabilizing didoe D of pressure stabilization function, for carrying out the band pass filter L of He Ne laser to secondary amplifying signal, for generation of the crystal resonator Y of resonance frequency, with for phase-locked, mixing the integrated circuit die I C of amplifying power.The horizontal polarization signals received is delivered to the one-level amplification that the second triode Q2 carries out signal by horizontal probe T1, the secondary amplification of signal is carried out again by the 3rd triode Q3, then integrated circuit die I C is inputed to by the signal of band pass filter L select target frequency range, for phase-locked, mixing the specific product model of the integrated circuit die I C of amplifying power can be RDA3570, integrated circuit die I C is connected with crystal resonator Y simultaneously, then intermediate-freuqncy signal is exported to receiver or other Signal reception treatment facility by intermediate-freuqncy signal output M, thus complete the collection of horizontal polarization signals, the perpendicular polarization signal received is delivered to the one-level amplification that the first triode Q1 carries out signal by Vertrical probe T2, the secondary amplification of signal is carried out again by the 3rd triode Q3, then integrated circuit die I C is inputed to by the signal of band pass filter L select target frequency range, then export intermediate-freuqncy signal to receiver or other Signal reception treatment facility by intermediate-freuqncy signal output M, thus complete the collection of perpendicular polarization signal.Different to the input current potential of voltage stabilizing didoe D generation when wherein horizontal probe T1 works with Vertrical probe T2, export different voltage by voltage stabilizing didoe D thus the control integration circuit chip IC startup signaling interface corresponding with perpendicular polarization signal to horizontal polarization signals and signal transacting chunk.
Preferably, between one stage signal amplifier second triode Q2 and the first triode Q1, be provided with one for regulating the microstrip line W of impedance, to reduce the noise factor of the finned tuner total system of a kind of C-band described in the present embodiment.Particularly, supply power voltage is by inputing to Circuits System from feeder ear V after voltage-stabiliser tube regulation voltage.Remaining resistance R1 ~ R11, electric capacity C1 ~ C12 all for regulating circuit performance according to actual needs, provide judgement voltage.
As shown in Figure 4, its gain curve is comparatively smooth for the product gain performance test curve of the present embodiment, and fluctuation range is 59.3db ~ 61.2db, and mean value is 60.2db; As shown in Figure 5, its noise curve is also comparatively smooth for the products noise performance test curve of the present embodiment, and fluctuation range is 1.43db ~ 1.58db, and mean value is 1.5db.
Comparative examples
Described fin radome 1 in specific embodiment is replaced with the universal shield cover of slab construction, all the other mechanical structures are identical with circuit structure, in contrast embodiment.
As shown in Figure 6, its gain curve fluctuation range is 58.5db ~ 60.3db to the product gain performance test curve of the present embodiment, and mean value is 59.4db; As shown in Figure 7, its noise curve fluctuation range is 1.75db ~ 2.85db to the products noise performance test curve of the present embodiment, and mean value is 2.5db.
Known by comparison diagram 4 to Fig. 7, described fin radome 1 significantly improves gain performance and the noiseproof feature of C-band tuner, make gain raising, noise reduction, and make the change curve of noise factor and frequency become more smooth, amplitude of variation is contracted to 0.15db from 1.1db.
Above content is in conjunction with specific embodiments to the detailed description that the utility model is done, and can not assert that the utility model is specifically implemented to be only limitted to these explanations.For the utility model person of ordinary skill in the field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as the scope belonging to the utility model protection.
Claims (2)
1. the finned tuner of C-band, it is characterized in that, comprise: metal shell and fin radome (1), described metal shell comprises the cylindrical pipe portion (2) as waveguide and the cuboid box portion (3) for mounting circuit boards, described cylindrical pipe portion (2) one end open, the other end is cecum, the open top of described cuboid box portion (3), bottom is provided with diapire, the diapire of described cuboid box portion (3) is fixedly connected with the cecum of described cylindrical pipe portion (2), and described cuboid box portion (3) is parallel to the axis of described cylindrical pipe portion (2), the top of described cuboid box portion (3) coordinates with described fin radome (1),
The circuit board installed in described cuboid box portion (3) comprises: the first triode (Q1) amplified for perpendicular polarization signal one-level, for the second triode (Q2) that horizontal polarization signals one-level is amplified, for the 3rd triode (Q3) that perpendicular polarization signal and horizontal polarization signals secondary amplify, for according to the difference of input voltage with export different voltage thus carry out horizontal polarization signals and perpendicular polarization signal switching and play the voltage stabilizing didoe (D) of pressure stabilization function, for carrying out the band pass filter (L) of He Ne laser to secondary amplifying signal, for generation of the crystal resonator (Y) of resonance frequency, with for phase-locked, mixing the integrated circuit (IC) chip of amplifying power (IC).
2. the finned tuner of a kind of C-band as claimed in claim 1, is characterized in that, top and the described fin radome (1) of described cuboid box portion (3) are connected and fixed by construction bolt; The top of described cuboid box portion (3) is provided with installation screw one (31) and seal groove one (32), described seal groove one (32) is rectangle, and installation screw one (31) is arranged at the inner side of described seal groove one (32), described fin radome (1) is provided with and the corresponding installation screw of described installation screw one (31) and described seal groove one (32) position two and described seal groove two; Described construction bolt coordinates with described installation screw one (31) through described installation screw two, and described seal groove one (32) and described seal groove two mutually fasten and form sealing strip chamber, are provided with rubber seal in described sealing strip chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001616.0U CN204334780U (en) | 2015-01-04 | 2015-01-04 | The finned tuner of a kind of C-band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001616.0U CN204334780U (en) | 2015-01-04 | 2015-01-04 | The finned tuner of a kind of C-band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334780U true CN204334780U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520001616.0U Expired - Fee Related CN204334780U (en) | 2015-01-04 | 2015-01-04 | The finned tuner of a kind of C-band |
Country Status (1)
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| CN (1) | CN204334780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469217A (en) * | 2015-01-04 | 2015-03-25 | 安徽波维电子科技有限公司 | C-waveband fin type high-frequency head |
-
2015
- 2015-01-04 CN CN201520001616.0U patent/CN204334780U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469217A (en) * | 2015-01-04 | 2015-03-25 | 安徽波维电子科技有限公司 | C-waveband fin type high-frequency head |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20170104 |