CN204334552U - A kind of Ku wave band three local oscillator low-converter - Google Patents
A kind of Ku wave band three local oscillator low-converter Download PDFInfo
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- CN204334552U CN204334552U CN201520001483.7U CN201520001483U CN204334552U CN 204334552 U CN204334552 U CN 204334552U CN 201520001483 U CN201520001483 U CN 201520001483U CN 204334552 U CN204334552 U CN 204334552U
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Abstract
The utility model discloses a kind of Ku wave band three local oscillator low-converter, comprise for allowing the microwave signal of special frequency channel by shielding the filter unit of the microwave signal of other frequency ranges simultaneously, described filter unit comprises three band pass filters, and the working frequency range of three described band pass filters is different; For controlling the selector switch of three described band pass filter break-makes; For generation of the local oscillation circuit of local frequency, described local oscillation circuit comprises three oscillating circuits, and three described oscillating circuits respectively comprise a resonator, and the resonance frequency of three described resonators is different and control break-make by described selector switch; For receiving the signal of the target frequency bands that described filter unit exports, and the local frequency that the signal of target frequency bands and described local oscillation circuit export is carried out the mixting circuit of mixing.A kind of Ku wave band three local oscillator low-converter described in the utility model, can realize the signal behavior reception of discontinuous frequency range by a local oscillation circuit.
Description
Technical field
The utility model relates to a kind of Ku wave band three local oscillator low-converter, belongs to satellite signal receiving equipment technical field.
Background technology
In satellite signal receiving technical field, usually need the signal receiving different frequency range, and often there is bandwidth granularity between the signal of different frequency range.Particularly, as shown in hereinafter Fig. 1, horizontal polarization signals needs the signal of the first frequency range received to obtain through the modulation of the first frequency mixer FM1 and the first resonator LC1 the first restituted signal F1 that frequency is 1257 MHz ~ 1493 MHz; Horizontal polarization signals needs the signal of the second frequency range received to obtain through the modulation of the second frequency mixer FM2 and the second resonator LC2 the second restituted signal F2 that frequency is 950 MHz ~ 1187.5 MHz; The signal of the 3rd frequency range that perpendicular polarization signal demand receives obtains through the modulation of three-mixer FM3 and the 3rd resonator LC3 the 3rd restituted signal F3 that frequency is 1573.5 MHz ~ 2150 MHz; Bandwidth granularity wherein between the first restituted signal F1 and the second restituted signal F2 is 69.5 MHz, and the bandwidth granularity between the 3rd restituted signal F3 and the second restituted signal F2 is 80.5 MHz.Because the band pass filter in signal receiver can only select one section of continuous print signal, interval can not be had, thus in the prior art, signal demand for discontinuous frequency range adopts multiple signal receiver with different local frequency and different frequency bands, or install multiple local oscillation circuit and band pass filter in a signal receiver, such scheme causes that the cost manufacture of equipment is higher, volume is larger.
Utility model content
The utility model for the deficiency that prior art exists, provides a kind of Ku wave band three local oscillator low-converter just, can be realized the signal behavior reception of discontinuous frequency range, meet actual operation requirements by a local oscillation circuit.
For solving the problem, technical solution adopted in the utility model is as follows:
A kind of Ku wave band three local oscillator low-converter, comprising:
For allowing the microwave signal of special frequency channel by shielding the filter unit of the microwave signal of other frequency ranges simultaneously, described filter unit comprises three band pass filters, and the working frequency range of three described band pass filters is different;
For controlling the selector switch of three described band pass filter break-makes;
For generation of the local oscillation circuit of local frequency, described local oscillation circuit comprises three oscillating circuits, and three described oscillating circuits respectively comprise a resonator, and the resonance frequency of three described resonators is different and control break-make by described selector switch;
For receiving the signal of the target frequency bands that described filter unit exports, and the local frequency that the signal of target frequency bands and described local oscillation circuit export is carried out the mixting circuit of mixing.
As the improvement of technique scheme, also comprise the waveguide for receiving microwave signal, described waveguide is arranged at the signal transmission upstream of described filter unit, and is also provided with low noise amplifier between described waveguide and described filter unit.Those skilled in the art are known, are at least also provided with probe between described waveguide and described low noise amplifier.
As the improvement of technique scheme, described local oscillation circuit comprises the main circuit parallel circuit identical with three circuit structures, three described parallel circuits are respectively provided with a described resonator, described selector switch is the first integrated circuit (IC) chip, and three described parallel circuits all connect described first integrated circuit (IC) chip; Described main circuit is provided with the second integrated circuit (IC) chip for playing phase-locked effect and the 3rd integrated circuit (IC) chip for playing frequency division effect.
Compared with prior art, implementation result of the present utility model is as follows for the utility model:
A kind of Ku wave band three local oscillator low-converter described in the utility model, the break-make of control three band pass filters is selected by arranging selector switch, thus the signal of conveying different frequency range is to mixting circuit, the break-make controlling three resonators corresponding to band pass filter is synchronously selected again by described selector switch, thus export different local frequencies to meet mixing requirement, thus the signal behavior reception of discontinuous frequency range can be realized by a local oscillation circuit, structure is simplified, low cost of manufacture, complete function, applied widely.In addition, the mode that the local oscillation circuit that the utility model proposes adopts three oscillating circuits and a frequency division phase lock circuitry to be combined by selector switch, thus simplified the structure of local oscillation circuit, reduce further the manufacturing cost of Ku wave band three local oscillator low-converter.
Accompanying drawing explanation
Fig. 1 is the demand schematic diagram that three the discontinuous frequency band signals existed in prior art receive;
Fig. 2 is the fundamental diagram of a kind of Ku wave band three local oscillator low-converter described in the utility model;
Fig. 3 is the main circuit structure schematic diagram of local oscillation circuit described in the utility model;
Fig. 4 is the parallel circuit structural representation of local oscillation circuit described in the utility model;
Fig. 5 is the circuit connection structure schematic diagram of the first integrated circuit (IC) chip described in the utility model.
Embodiment
Below in conjunction with specific embodiments content of the present utility model is described.
For meeting the demand that discontinuous frequency band signals receives of three shown in Fig. 1, provide a kind of Ku wave band three local oscillator low-converter, its structure as shown in Figure 2.A kind of Ku wave band three local oscillator low-converter described in the present embodiment, comprise: for allowing the microwave signal of special frequency channel by shielding the filter unit of the microwave signal of other frequency ranges simultaneously, described filter unit comprises three band pass filters, and the working frequency range of three described band pass filters is different; For controlling the selector switch of three described band pass filter break-makes; For generation of the local oscillation circuit of local frequency, described local oscillation circuit comprises three oscillating circuits, and three described oscillating circuits respectively comprise a resonator, and the resonance frequency of three described resonators is different and control break-make by described selector switch; For receiving the signal of the target frequency bands that described filter unit exports, and the local frequency that the signal of target frequency bands and described local oscillation circuit export is carried out the mixting circuit of mixing.Also comprise the waveguide for receiving microwave signal, described waveguide is arranged at the signal transmission upstream of described filter unit, and is also provided with low noise amplifier between described waveguide and described filter unit; Those skilled in the art are known, are at least also provided with probe between described waveguide and described low noise amplifier.
Particularly, as shown in Figures 3 to 5, described local oscillation circuit comprises the main circuit parallel circuit identical with three circuit structures, three described parallel circuits are respectively provided with a described resonator Y, described selector switch is the first integrated circuit die I C1, and three described parallel circuits all connect described first integrated circuit die I C1; Described main circuit is provided with the second integrated circuit die I C2 for playing phase-locked effect and the 3rd integrated circuit die I C3 for playing frequency division effect.Particularly, described first integrated circuit die I C1 can be A7522 chip, and described second integrated circuit die I C2 can be phase-locked loop chip CD4046, and described 3rd integrated circuit die I C3 can be 256 frequency division chip upb1057GV.Parallel circuit as shown in Figure 4 has three, is respectively arranged with IN1, IN2, IN3 tri-joints, and the joint of three described parallel circuits is connected with IN1, IN2, IN3 tri-interfaces of described first integrated circuit die I C1 respectively.Triode Q1 in described parallel circuit is used for oscillates effect, and the triode Q2 in described main circuit is used for signal amplification, and all the other electric capacity and resistance have been used for the effect mating and absorb clutter.
During work, by the mode operating selection switch that infrared remote mode or direct circuit control, carry out the selection of band pass filter resonator: the break-make being selected control three band pass filters by selector switch, thus the signal of conveying different frequency range is to mixting circuit, the break-make controlling three resonators corresponding to band pass filter is synchronously selected again by described selector switch, thus export different local frequencies to meet mixing requirement, thus selection receives and processes the signal of different frequency range.
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 (3)
1. a Ku wave band three local oscillator low-converter, is characterized in that, comprising:
For allowing the microwave signal of special frequency channel by shielding the filter unit of the microwave signal of other frequency ranges simultaneously, described filter unit comprises three band pass filters, and the working frequency range of three described band pass filters is different;
For controlling the selector switch of three described band pass filter break-makes;
For generation of the local oscillation circuit of local frequency, described local oscillation circuit comprises three oscillating circuits, and three described oscillating circuits respectively comprise a resonator, and the resonance frequency of three described resonators is different and control break-make by described selector switch;
For receiving the signal of the target frequency bands that described filter unit exports, and the local frequency that the signal of target frequency bands and described local oscillation circuit export is carried out the mixting circuit of mixing.
2. a kind of Ku wave band three local oscillator low-converter as claimed in claim 1, it is characterized in that, also comprise the waveguide for receiving microwave signal, described waveguide is arranged at the signal transmission upstream of described filter unit, and is also provided with low noise amplifier between described waveguide and described filter unit.
3. a kind of Ku wave band three local oscillator low-converter as claimed in claim 1, it is characterized in that, described local oscillation circuit comprises the main circuit parallel circuit identical with three circuit structures, three described parallel circuits are respectively provided with a described resonator, described selector switch is the first integrated circuit (IC) chip, and three described parallel circuits all connect described first integrated circuit (IC) chip; Described main circuit is provided with the second integrated circuit (IC) chip for playing phase-locked effect and the 3rd integrated circuit (IC) chip for playing frequency division effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001483.7U CN204334552U (en) | 2015-01-04 | 2015-01-04 | A kind of Ku wave band three local oscillator low-converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001483.7U CN204334552U (en) | 2015-01-04 | 2015-01-04 | A kind of Ku wave band three local oscillator low-converter |
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| Publication Number | Publication Date |
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| CN204334552U true CN204334552U (en) | 2015-05-13 |
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| CN201520001483.7U Expired - Fee Related CN204334552U (en) | 2015-01-04 | 2015-01-04 | A kind of Ku wave band three local oscillator low-converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467889A (en) * | 2015-01-04 | 2015-03-25 | 安徽波维电子科技有限公司 | Ku-band three-local-oscillator down converter |
| CN106936390A (en) * | 2017-03-17 | 2017-07-07 | 安徽波维电子科技有限公司 | A kind of upconverter of SCM Based intelligent power regulation |
-
2015
- 2015-01-04 CN CN201520001483.7U patent/CN204334552U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467889A (en) * | 2015-01-04 | 2015-03-25 | 安徽波维电子科技有限公司 | Ku-band three-local-oscillator down converter |
| CN106936390A (en) * | 2017-03-17 | 2017-07-07 | 安徽波维电子科技有限公司 | A kind of upconverter of SCM Based intelligent power regulation |
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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 |