CN101820294A - Broad band receiver with thin-step inlet-source local oscillation circuit - Google Patents
Broad band receiver with thin-step inlet-source local oscillation circuit Download PDFInfo
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- CN101820294A CN101820294A CN201010122231A CN201010122231A CN101820294A CN 101820294 A CN101820294 A CN 101820294A CN 201010122231 A CN201010122231 A CN 201010122231A CN 201010122231 A CN201010122231 A CN 201010122231A CN 101820294 A CN101820294 A CN 101820294A
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Abstract
The invention provides a broad band receiver with a thin-step inlet-source local oscillation circuit, which relates to the field of electronic communication. The broad band receiver aims at solving the technical problem that the on-line degree, dynamic range, sensitivity, disturbance resistance, suitability, and the like of the traditional receiver can not satisfy the gradually rigorous index requirements of the industry. The broad band receiver with the thin-step inlet-source local oscillation circuit comprises a power source, a local oscillation module, a reception channel and a numerical control part which are respectively arranged in independent cavities. The broad band receiver with the thin-step inlet-source local oscillation circuit is suitable for the design of a broad band receiver.
Description
Technical field
The present invention relates to electronic communication field, particularly a kind of broadband receiver that is used for radar system, detecting system and electronic countermeasures field.
Background technology
General purpose receiver is used in army can be used as frequency monitoring, and the enemy broadcasting station signal is monitored and detected, and can be used in the identification of friend or foe, IFF.High-performance, the broadband general purpose receiver of high integration in modern war, have been extensive use of both at home and abroad.On civilian, can be widely used in civil aviation, space flight, maritime communication, scientific investigation and the aspect such as reconnoitre.
Modern general purpose receiver is in design and realize more and more tending to high-performance, the high integration direction develops.On performance, modern general purpose receiver mainly is to aspect development such as high linearity, great dynamic range, high sensitivity, high-resolution.Along with the fast development of modern modulation system, and the degree of crowding of wireless frequency spectrum increasingly sharpens, and the performance and the index of aspects such as the linearity of receiver, dynamic range, sensitivity, antijamming capability, adaptability proposed more and more harsher requirement.This just requires modern general purpose receiver under the prerequisite that guarantees input ability (being high sensitivity), improve the linearity of receiver as much as possible, make distorted signals minimum, the error rate minimum: the dynamic range of broadening receiver as much as possible makes the fitness of receiver bigger, antijamming capability is stronger.
Summarize it, mainly there is the deficiency of following aspect in existing general purpose receiver:
1. the linearity is low, dynamic range is not enough;
2. input ability;
3. distorted signals is big, the error rate is higher;
4. dynamic range is narrower, antijamming capability is relatively poor.
Summary of the invention
The present invention is intended to solve traditional receiver can not satisfy the harsh day by day technical problems such as index request of the industry at aspects such as the linearity, dynamic range, sensitivity, antijamming capability, adaptability, so that a kind of high linearity, great dynamic range, high sensitivity, high-resolution, distorted signals is little, the error rate is low, fitness is bigger, antijamming capability the is stronger thin stepping source local oscillation circuit of band broadband receiver to be provided.
The objective of the invention is to be achieved through the following technical solutions.
The thin stepping source local oscillation circuit of band of the present invention broadband receiver, by power supply, the local oscillator module, receive path and numerical control partly constitute, the input of numerical-control attenuator 2 connects radio-frequency signal source 1, the input of two switches 3 is selected in its output connection one, an output of switch 3 connects straight-through 4 input, its another output connects the input of amplifier 5, straight-through 4 and the output of amplifier 5 all be connected to an input that selects two switches 6, the output of switch 6 and one selects the input of two switches 7 to be connected, two outputs of switch 7 select the input of six switches 8 and switch 9 to be connected with two one respectively, 6 outputs of switch 8 select 6 inputs of six switches 14 to be connected with one after being connected in series 6 preselection filters respectively, 6 outputs of switch 9 select 6 inputs of six switches 15 to be connected with one after being connected in series 6 preselection filters respectively, the output of switch 14 and switch 15 all selects the input of two switches 16 to be connected with one, the output of switch 16 and one selects the input of two switches 17 to be connected, the output of switch 17 wherein selects the input of two switches 20 to be connected with one in straight-through 18 backs of one tunnel serial connection, another serial connection amplifier 19 backs, road are connected the output of switch 20 with the input of switch 20, the output of local oscillator 1 is connected with the input of first frequency mixer 21; Output series connection cavity fluid filter 23 backs of first frequency mixer 21 are connected with the input of amplifier 24, and the output of the output of amplifier 24, local oscillator 2 26 is connected with the input of second frequency mixer 25; The output serial connection LC filter 27 of second frequency mixer 25, amplifier 28, two-stage numerical- control attenuator 29,30 backs are connected with the input of amplifier 31, and the output of amplifier 31 is connected with an input of three-mixer 32; Local oscillator 3 33 is connected in series in turn by crystal oscillator 52, phase discriminator 70, voltage controlled oscillator 71 and four-divider 72 and constitutes, and the output of four-divider 72 is connected with another input of three-mixer 32; The output serial connection LC filter 34 of three-mixer 32, amplifier 35, numerical-control attenuator 36, amplifier 37 backs select the input of six switches 38 to be connected with one, 6 outputs of switch 38 select 6 inputs of six switches 41 to be connected with one after being connected in series 6 preselection filters respectively, the output serial connection amplifier 42 of switch 41, amplifier 43 back output final signals 44.
The thin stepping source local oscillation circuit of band of the present invention broadband receiver, wherein said local oscillator one 22 output signals are 3544～6524MHz.
The thin stepping source local oscillation circuit of band of the present invention broadband receiver, wherein said local oscillator 2 26 output signals are 3200MHz.
The thin stepping source local oscillation circuit of band of the present invention broadband receiver, the phase discriminator 70 of wherein said local oscillator 3 33 is MAX2150, and its output frequency is 1560-1576MHz, and the output signal frequency of four-divider 72 is 394～390MHz, the 1kHz stepping.
The thin stepping source local oscillation circuit of band of the present invention broadband receiver, wherein said power supply, local oscillator module, receive path and numerical control partly are divided in the individual cavity.
The thin stepping source local oscillation circuit of band of the present invention broadband receiver, wherein said individual cavity top is equipped with independent cover plate, is provided with an encapsulation top board on other cavity and the aforementioned individual cavity in addition.
The beneficial effect of the thin stepping source local oscillation circuit of band of the present invention broadband receiver:
1. integrated use Digital Signal Processing, radio-frequency channel designing technique, frequency source designing technique and cavity body structure designing technique have adopted large scale integrated circuit to reduce device, have improved product reliability;
2. realized the ultra broadband reception;
3. high linear, great dynamic range;
High sensitivity, high-resolution, distorted signals is little, the error rate is low;
5. fitness is bigger, antijamming capability is stronger;
6. volume is little.
Description of drawings
Fig. 1 circuit theory diagrams of the present invention
The circuit theory of Fig. 2 local oscillator three of the present invention
Number in the figure explanation: 1 radio-frequency signal source, 2 numerical-control attenuators, 3 switches, 4 is straight-through, 5 amplifiers, 6 switches, 7 switches, 8 switches, 9 switches, 10 preselection filters, 11 preselection filters, 12 preselection filters, 13 preselection filters, 14 switches, 15 switches, 16 switches, 17 switches, 18 is straight-through, 19 amplifiers, 20 switches, 21 first frequency mixers, 22 local oscillators one, 23 cavity body filters, 24 amplifiers, 25 second frequency mixers, 26 local oscillators two, the 27LC filter, 28 amplifiers, 29 numerical-control attenuators, 30 numerical-control attenuators, 31 amplifiers, 32 three-mixers, 33 local oscillators three, the 34LC filter, 35 amplifiers, 36 numerical-control attenuators, 37 amplifiers, 38 switches, 39 preselection filters, 40 preselection filters, 41 switches, 42 amplifiers, 43 amplifiers, 44 final signals, 52 crystal oscillators, 70 phase discriminators, 71 voltage controlled oscillators, 72 four-dividers
Embodiment
Detailed structure of the present invention, application principle, effect and effect with reference to accompanying drawing 1-2, are illustrated by following execution mode.
Consult shown in Fig. 1-2, the thin stepping source local oscillation circuit of band of the present invention broadband receiver, by power supply, the local oscillator module, receive path and numerical control partly constitute, the input of numerical-control attenuator 2 connects radio-frequency signal source 1, the input of two switches 3 is selected in its output connection one, an output of switch 3 connects straight-through 4 input, its another output connects the input of amplifier 5, straight-through 4 and the output of amplifier 5 all be connected to an input that selects two switches 6, the output of switch 6 and one selects the input of two switches 7 to be connected, two outputs of switch 7 select the input of six switches 8 and switch 9 to be connected with two one respectively, 6 outputs of switch 8 select 6 inputs of six switches 14 to be connected with one after being connected in series 6 preselection filters respectively, 6 outputs of switch 9 select 6 inputs of six switches 15 to be connected with one after being connected in series 6 preselection filters respectively, and the output of switch 14 and switch 15 all selects the input of two switches 16 to be connected with one.
The output of switch 16 and one selects the input of two switches 17 to be connected, the output of switch 17 wherein selects the input of two switches 20 to be connected with one in straight-through 18 backs of one tunnel serial connection, another serial connection amplifier 19 backs, road are connected with the input of switch 20, and the output of the output of switch 20, local oscillator 1 is connected with the input of first frequency mixer 21.
Output series connection cavity fluid filter 23 backs of first frequency mixer 21 are connected with the input of amplifier 24, and the output of the output of amplifier 24, local oscillator 2 26 is connected with the input of second frequency mixer 25.
The output serial connection LC filter 27 of second frequency mixer 25, amplifier 28, two-stage numerical- control attenuator 29,30 backs are connected with the input of amplifier 31, and the output of amplifier 31 is connected with an input of three-mixer 32.
The output serial connection LC filter 34 of three-mixer 32, amplifier 35, numerical-control attenuator 36, amplifier 37 backs select the input of six switches 38 to be connected with one, 6 outputs of switch 38 select 6 inputs of six switches 41 to be connected with one after being connected in series 6 preselection filters respectively, the output serial connection amplifier 42 of switch 41, amplifier 43 back output final signals 44.
This is with thin stepping source local oscillation circuit broadband receiver to adopt three grades of super-heterodyne architecture, and by the down-conversion of three relevant local oscillators realization receive frequencies, wherein local oscillator 1 is to be realized by the phase-locked loop that a HMC440 is a phase discriminator; The 100MHz crystal oscillator through 4 frequencys multiplication after as the reference of AD9910, the 50MHz frequency that AD9910 output is fixed is as the reference of phase discriminator HMC440, the phase-locked loop output frequency is 1772～3262MHz, consider overall phase noise, spuious, device self index, in winding, added AD9858 as frequency divider, output frequency is the 4MHz stepping, and the spuious index of full frequency band is very good like this; Output frequency is 3.544～6.524MHz after frequency 2 frequencys multiplication of locking.
For reducing electromagnetic interference, this configuration aspects with thin stepping source local oscillation circuit broadband receiver adopts Shielding Design, the design that is about to power supply, local oscillator module, receive path, digital control part etc. is spaced from each other as far as possible, is produced on the different PCB, is divided in each loculus body of cavity.Whole HFS and low frequency part are separated fully, can avoid each functional circuit phase mutual interference like this, each little cavity shields with minor flaps separately, adds a large cover shielding above again and reaches effect preferably.
Therefore, the thin stepping source local oscillation circuit of band of the present invention broadband receiver, integrated use Digital Signal Processing, radio-frequency channel designing technique, frequency source designing technique and cavity body structure designing technique, adopted large scale integrated circuit to reduce device, improved product reliability, realized the ultra broadband reception, have high linearity, great dynamic range, high sensitivity, high-resolution, distorted signals is little, the bit error rate is low, and the plurality of advantages such as fitness is bigger, antijamming capability is stronger, volume is little.
Claims (6)
1. with the broadband receiver of thin stepping source local oscillation circuit, it is characterized in that: by power supply, the local oscillator module, receive path and numerical control partly constitute, the input of numerical-control attenuator (2) connects radio-frequency signal source (1), the input of two switches (3) is selected in its output connection one, an output of switch (3) connects the input of straight-through (4), its another output connects the input of amplifier (5), the output of straight-through (4) and amplifier (5) all is connected to an input that selects two switches (6), the output and one of switch (6) selects the input of two switches (7) to be connected, two outputs of switch (7) select six switches (8) to be connected with the input of switch (9) with two one respectively, 6 outputs of switch (8) select 6 inputs of six switches (14) to be connected with one after being connected in series 6 preselection filters respectively, 6 outputs of switch (9) select 6 inputs of six switches (15) to be connected with one after being connected in series 6 preselection filters respectively, the output of switch (14) and switch (15) all selects the input of two switches (16) to be connected with one, the output and one of switch (16) selects the input of two switches (17) to be connected, the output of switch (17) wherein selects the input of two switches (20) to be connected with one in one tunnel serial connection straight-through (18) back, another road serial connection amplifier (19) back is connected the output of switch (20) with the input of switch (20), the output of local oscillator one (22) is connected with the input of first frequency mixer (21); Output series connection cavity fluid filter (23) back of first frequency mixer (21) is connected with the input of amplifier (24), and the output of the output of amplifier (24), local oscillator two (26) is connected with the input of second frequency mixer (25); The output serial connection LC filter (27) of second frequency mixer (25), amplifier (28), two-stage numerical-control attenuator (29,30) back are connected with the input of amplifier (31), and the output of amplifier (31) is connected with an input of three-mixer (32); Local oscillator three (33) is connected in series formation in turn by crystal oscillator (52), phase discriminator (70), voltage controlled oscillator (71) and four-divider (72), and the output of four-divider (72) is connected with another input of three-mixer (32); The output serial connection LC filter (34) of three-mixer (32), amplifier (35), numerical-control attenuator (36), amplifier (37) back select the input of six switches (38) to be connected with one, 6 outputs of switch (38) select 6 inputs of six switches (41) to be connected with one after being connected in series 6 preselection filters respectively, the output serial connection amplifier (42) of switch (41), amplifier (43) back output final signal (44).
2. be with thin stepping source local oscillation circuit broadband receiver according to claim 1, it is characterized in that: described local oscillator one (22) output signal is 3544～6524MHz.
3. be with thin stepping source local oscillation circuit broadband receiver according to claim 1, it is characterized in that: described local oscillator two (26) output signals are 3200MHz.
4. be with thin stepping source local oscillation circuit broadband receiver according to claim 1, it is characterized in that: the phase discriminator (70) of described local oscillator three (33) is MAX2150, its output frequency is 1560-1576MHz, and the output signal frequency of four-divider (72) is 394～390MHz, the 1kHz stepping.
5. be with thin stepping source local oscillation circuit broadband receiver according to claim 1, it is characterized in that: described power supply, local oscillator module, receive path and numerical control partly are divided in the individual cavity.
6. as the thin stepping source local oscillation circuit of band broadband receiver as described in the claim 5, it is characterized in that: described individual cavity top is equipped with independent cover plate, is provided with an encapsulation top board on other cavity and the aforementioned individual cavity in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122231A CN101820294A (en) | 2010-03-11 | 2010-03-11 | Broad band receiver with thin-step inlet-source local oscillation circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010122231A CN101820294A (en) | 2010-03-11 | 2010-03-11 | Broad band receiver with thin-step inlet-source local oscillation circuit |
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| CN201010122231A Pending CN101820294A (en) | 2010-03-11 | 2010-03-11 | Broad band receiver with thin-step inlet-source local oscillation circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951267A (en) * | 2010-09-15 | 2011-01-19 | 西安欣业科技发展有限公司 | Small beacon signal receiving device |
| CN110380791A (en) * | 2019-08-05 | 2019-10-25 | 合肥本源量子计算科技有限责任公司 | A kind of generation system of target frequency bands quantum bit logical signal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2335313Y (en) * | 1998-07-21 | 1999-08-25 | 电子工业部第五十四研究所 | High frequency front end frequency expander for ultrahigh frequency waveband receiver |
| WO2004068742A1 (en) * | 2003-01-31 | 2004-08-12 | Fujitsu Limited | Mobile radio terminal device |
| CN101584157A (en) * | 2006-09-26 | 2009-11-18 | 利弗有限公司 | Remote transmission system |
-
2010
- 2010-03-11 CN CN201010122231A patent/CN101820294A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2335313Y (en) * | 1998-07-21 | 1999-08-25 | 电子工业部第五十四研究所 | High frequency front end frequency expander for ultrahigh frequency waveband receiver |
| WO2004068742A1 (en) * | 2003-01-31 | 2004-08-12 | Fujitsu Limited | Mobile radio terminal device |
| CN101584157A (en) * | 2006-09-26 | 2009-11-18 | 利弗有限公司 | Remote transmission system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951267A (en) * | 2010-09-15 | 2011-01-19 | 西安欣业科技发展有限公司 | Small beacon signal receiving device |
| CN110380791A (en) * | 2019-08-05 | 2019-10-25 | 合肥本源量子计算科技有限责任公司 | A kind of generation system of target frequency bands quantum bit logical signal |
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Application publication date: 20100901 |