CN202535309U - Small airborne frequency up-conversion system frequency conversion channel circuit - Google Patents
Small airborne frequency up-conversion system frequency conversion channel circuit Download PDFInfo
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- CN202535309U CN202535309U CN 201220186053 CN201220186053U CN202535309U CN 202535309 U CN202535309 U CN 202535309U CN 201220186053 CN201220186053 CN 201220186053 CN 201220186053 U CN201220186053 U CN 201220186053U CN 202535309 U CN202535309 U CN 202535309U
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Abstract
The utility model discloses a small airborne frequency up-conversion system frequency conversion channel circuit. The small airborne frequency up-conversion system frequency conversion channel circuit comprises a frequency mixer, a band pass filter, an amplifier, a digital control attenuator, a low pass filter, a demodulation output circuit, a fault processing circuit and a power processing and module enabling circuit, after frequency mixture of externally inputted 70MHz signals and signals outputted by a local oscillator circuit, required wide band signals are generated after secondary frequency conversion and then are carried out filtering amplification, and 960MHz-1224MHz signals are outputted. The small airborne frequency up-conversion system frequency conversion channel circuit directly employs a digital phase lock frequency source and selects the frequency mixer with relatively high compression for frequency spectrum displacement, so a stray inhibition ratio of a system is greatly improved; and by employing secondary frequency conversion, stray is effectively inhibited, and anti-interference capability is improved.
Description
Technical field
The utility model relates to a kind of minitype airborne up-converter system frequency conversion channel circuit.
Background technology
The method that realizes the frequency hopping vibration has a lot, can be divided into by the mode that realizes and directly synthesize (crystal oscillator frequency multiplier chain) and be bonded into (phase-locked loop).System constitutes complicacy when adopting direct synthesizing, cost is high, clutter inhibition degree is not high, be not easy to realize closeer jumping point, operating current is big, volume is big; Though system constitutes simply when being bonded between employing, reliability is high, cost is low, clutter inhibition degree high, realize closeer jumping point easily, operating current is little, volume is little; But when constituting wide interval frequency hopping, must combine, and frequency hopping speed is slow, phase noise difference etc. all is inevitable shortcomings with direct synthesis mode.At present, the frequency hopping speed advanced international level of synthetic source can reach about 10uS indirectly, for the shortcoming of phase noise difference, can optimize circuit through the phase noise that reduces frequency multiplication number of times (N value) and raising reference signal.
The utility model adopts indirect synthetic schemes, directly synthesizes at this and does not just do too many discussion.The frequency synthesis source is a kind of high-grade signal source indirectly, is a kind of high-quality signal generator that is produced multiple frequency output by one or more reference frequencies, at communication and the widely-used at present frequency synthesizer of field of measurement.Have system and constitute advantages such as simple relatively, that cost is low, volume is little and since adopt be between be bonded into, its clutter inhibition degree is better, complexity is not high.Shortcomings such as strict demand for phase noise can be well controlled through reasonable plan design and circuit design.Between the clutter that is bonded into suppress, simple in structure, volume is little, the little grade of electric current all is irreplaceable advantages.
The minitype airborne up-converter system requires strict especially to volume and spuious inhibition; Can know from the high-order intermodulation product analysis of frequency mixer; Be difficult to reach technical indicator through its spuious degree after the mixing, the utility model adopts the mixing mode on the frequency spectrum shift of input signal, and the signal that mixing produces is selected needed signal through filter and amplified; Adopt the compression points frequency mixer to carry out mixing, guarantee to satisfy the requirement of technical indicator.
The utility model content
The purpose of the utility model promptly is to overcome the deficiency of prior art; A kind of minitype airborne up-converter system frequency conversion channel circuit is provided, directly adopts digital frequency of phase locking source, select for use the higher frequency mixer of compression to make frequency spectrum shift; Improved the spuious rejection ratio in the system greatly; Adopt double conversion, suppress spuious effectively, increased antijamming capability.
The purpose of the utility model realizes through following technical scheme: a kind of minitype airborne up-converter system frequency conversion channel circuit; It comprises frequency mixer, band pass filter, amplifier, numerical-control attenuator, low pass filter, detection output circuit, fault logic circuits, power supply processing and module enable circuits; The detection input signal of outside 70MHz is connected with the input of frequency mixer respectively with local oscillator output signal; The output of frequency mixer, band pass filter, amplifier, numerical-control attenuator, low pass filter connect in order; The output of low pass filter directly is connected with outlet line; The output of amplifier is connected with the input of detection output circuit; One tunnel output of detection output circuit is connected with the power detection output circuit; Another road output of detection output circuit is connected with the input of fault logic circuits, and also with losing lock indication output circuit I, losing lock indication output circuit II, power supply is handled and the module enable circuits is connected, the output of fault logic circuits is connected with module warning output circuit the input of fault logic circuits.
The beneficial effect of the utility model is:
(1) the utility model provides a kind of minitype airborne up-converter system frequency conversion channel circuit; Directly adopt digital frequency of phase locking source, select for use the higher frequency mixer of compression to make frequency spectrum shift, improved the spuious rejection ratio in the system greatly; Behind the signal mixing that the 70MHz signal of outside input and local oscillation circuit are exported; Produce required broadband signal through double conversion earlier, amplify output 960MHz～1224MHz signal through filtering then, adopt double conversion; Suppress spuious effectively, increased antijamming capability;
(2) the utility model provides a kind of minitype airborne up-converter system frequency conversion channel circuit, adopts modular design, thereby simplifies the design complexity of circuit, reduces the modular debugging difficulty, strengthens the productibility of product.
Description of drawings
Fig. 1 is the circuit structure block diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description, but the protection range of the utility model is not limited to the following stated.
As shown in Figure 1; A kind of minitype airborne up-converter system frequency conversion channel circuit; It comprises frequency mixer, band pass filter, amplifier, numerical-control attenuator, low pass filter, detection output circuit, fault logic circuits, power supply processing and module enable circuits; The detection input signal of outside 70MHz is connected with the input of frequency mixer respectively with local oscillator output signal; The output of frequency mixer, band pass filter, amplifier, numerical-control attenuator, low pass filter connect in order, and the output of low pass filter directly is connected with outlet line, and the output of amplifier is connected with the input of detection output circuit; One tunnel output of detection output circuit is connected with the power detection output circuit; Another road output of detection output circuit is connected with the input of fault logic circuits, and also with losing lock indication output circuit I, losing lock indication output circuit II, power supply is handled and the module enable circuits is connected, the output of fault logic circuits is connected with module warning output circuit the input of fault logic circuits.
Claims (1)
1. minitype airborne up-converter system frequency conversion channel circuit; It is characterized in that: it comprises frequency mixer, band pass filter, amplifier, numerical-control attenuator, low pass filter, detection output circuit, fault logic circuits, power supply processing and module enable circuits; The detection input signal of outside 70MHz is connected with the input of frequency mixer respectively with local oscillator output signal; The output of frequency mixer, band pass filter, amplifier, numerical-control attenuator, low pass filter connect in order; The output of low pass filter directly is connected with outlet line; The output of amplifier is connected with the input of detection output circuit, and one tunnel output of detection output circuit is connected with the power detection output circuit, and another road output of detection output circuit is connected with the input of fault logic circuits; Also with losing lock indication output circuit I, losing lock indication output circuit II, power supply is handled and the module enable circuits is connected, the output of fault logic circuits is connected with module warning output circuit the input of fault logic circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186053 CN202535309U (en) | 2012-04-28 | 2012-04-28 | Small airborne frequency up-conversion system frequency conversion channel circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186053 CN202535309U (en) | 2012-04-28 | 2012-04-28 | Small airborne frequency up-conversion system frequency conversion channel circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202535309U true CN202535309U (en) | 2012-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220186053 Expired - Fee Related CN202535309U (en) | 2012-04-28 | 2012-04-28 | Small airborne frequency up-conversion system frequency conversion channel circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202535309U (en) |
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2012
- 2012-04-28 CN CN 201220186053 patent/CN202535309U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Frequency conversion channel circuit of small-sized airborne upconversion system Effective date of registration: 20130910 Granted publication date: 20121114 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150707 Granted publication date: 20121114 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |