CN202374218U - Spectrum measuring device and YIG tuned oscillator with external power supply thereof - Google Patents
Spectrum measuring device and YIG tuned oscillator with external power supply thereof Download PDFInfo
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- CN202374218U CN202374218U CN2011205059624U CN201120505962U CN202374218U CN 202374218 U CN202374218 U CN 202374218U CN 2011205059624 U CN2011205059624 U CN 2011205059624U CN 201120505962 U CN201120505962 U CN 201120505962U CN 202374218 U CN202374218 U CN 202374218U
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- power supply
- external power
- voltage stabilizing
- supply voltage
- circuit board
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Abstract
The utility model discloses a spectrum measuring device and a YIG (Yttrium Iron Garnet) tuned oscillator with an external power supply thereof. The YIG tuned oscillator comprises a closed magnet, an oscillating circuit board and an external power supply voltage stabilizing board, as well as a first feed-through capacitor, a second feed-through capacitor and an SMA (Sub-Miniature-A) output interface which are mounted on the casing of the closed magnet, wherein the external power supply voltage stabilizing board is mounted outside the closed magnet; the positive power supply output terminal and the negative power supply output terminal of the external power supply voltage stabilizing board are respectively connected with the first feed-through capacitor and the second feed-through capacitor; and only the positive power supply output terminal of the external power supply voltage stabilizing board is connected with a grounded filter capacitor, of which the capacitance ranges from 100 uF to 470 uF. The tuned oscillator provided by the utility model has the advantages of low cost and convenience in installation, and greatly reduces influence on the oscillating circuit from the outside noise.
Description
Technical field
The utility model relates to a kind of spectrum measuring device, and adopts the yig tuned oscillator of external power supply.
Background technology
Spectrum analyzer is the indispensable means that radio signal is measured, and is the common tool of being engaged in the electronic product research and development, producing, check, and uses very extensively.
Spectrum analyzer is divided into scan-type spectrum analyzer and real-time formula spectrum analyzer, and the scan-type spectrum analyzer is mainly used in the spectrum analysis of continuous signal and periodic signal, and its basic principle structure chart is as shown in Figure 1; Spectrum analyzer 1 comprises RF signal input end 11, attenuator 12, frequency mixer 13; Amplifier 14, filter 15, wave detector 16; Local oscillator 17, sweeping generator 18 and display 19 etc., its basic principle is the method through scanning local oscillator 17; The signal that radio-frequency input signals and local oscillator 17 produced carries out mixing, and the intermediate-freuqncy signal that obtains is amplified, after the Filtering Processing, is output as vision signal through wave detector 16; Pass through various computings again, final measurement is exported on display 19.
It is thus clear that local oscillator plays an important role in the scan-type spectrum analyzer.In the prior art, adopt the local oscillator of yig tuned oscillator as the scan-type spectrum analyzer, yig tuned oscillator is called for short YTO more; The power module that it generally includes oscillating circuit, the closed magnet of sealing scanning magnetic field can be provided and supply power for oscillating circuit; Wherein the basic principle structure chart of oscillating circuit 2 is as shown in Figure 2, and it comprises microwave transistor 25, emitter feed circuit 21, collector electrode feed circuit 23, coupled structure 22, ground capacity 24 and output circuit 26, and wherein microwave transistor 25 is an oscillating tube; After powering on for oscillating tube; All contain abundant harmonic component in the kick of voltage and the fluctuation of electric current, the YIG bead in the coupled structure 22 produces resonance to harmonic component wherein, through suitable dc point is set for feed circuit; Make entire circuit be in unsteady state; Thereby realize vibration, output circuit 26 is used for oscillator signal is cushioned amplification, finally realizes the output of signal.Wherein ground capacity 24 is used to realize the ground connection of radio frequency path.Wherein, power module is made up of power supply and voltage stabilizing plate, and power supply is used to oscillating circuit power supply, and the voltage stabilizing plate is mainly used in input conversion and the filtering of power supply etc.
In the prior art; YTO adopts built-in power voltage stabilizing plate, through the voltage stabilizing plate is arranged in the closed magnetic path, can effectively reduce even eliminate the EMI susceptibility to outside interlock circuit; But this kind power supply voltage stabilizing plate need be installed on the oscillating circuit board; So need oscillating circuit board to have enough spaces, and installation cost is high, this kind voltage stabilizing plate price is expensive partially.In order to practice thrift cost, also have in the prior art voltage stabilizing plate is placed on the outside YTO of sealing magnet, but owing to the external environment noise can not effectively be eliminated the influence that power supply produces, thereby oscillating circuit has been brought interference.
Summary of the invention
In order to solve the problem that exists in the prior art, the utility model provides a kind of yig tuned oscillator that adopts external power supply, and have the spectrum measuring device of this yig tuned oscillator.
The utility model provides a kind of yig tuned oscillator that adopts external power supply; Comprise sealing magnet, oscillating circuit board, an external power supply voltage stabilizing plate and be installed in one first feedthrough capacitor, second feedthrough capacitor and the SMA output interface on the shell of described sealing magnet; Described oscillating circuit board comprises a pcb board; And be installed in a microwave transistor on the described pcb board, an emitter feed circuit, a ground capacity, a YIG coupling unit, a collector electrode feed circuit, an output circuit; Described external power supply voltage stabilizing plate is installed in the outside of described sealing magnet; Its power supply positive-negative output end is connected with second feedthrough capacitor with described first feedthrough capacitor respectively; Its earth terminal is connected with described sealing magnet; Described oscillating circuit board is installed in the inside of described sealing magnet; The positive-negative power input of described oscillating circuit board is connected with second feedthrough capacitor with described first feedthrough capacitor respectively, and the output of described oscillating circuit board is connected with described SMA output interface, and described emitter feed circuit and YIG coupling unit are connected in series between the emitter of negative supply input and described microwave transistor of described oscillating circuit board successively; Described ground capacity is connected between described emitter feed circuit and the described YIG coupling unit; Described collector electrode feed circuit is connected in series between the collector electrode of positive supply input and described microwave transistor of described oscillating circuit board, and described output circuit is connected in series between the output of collector electrode and described oscillating circuit board of described microwave transistor, in the power supply positive-negative output end of described external power supply voltage stabilizing plate; Only positive output end is connected with the filter capacitor of a ground connection, and its electric capacity span is 100uF-470uF.
In the described yig tuned oscillator of the utility model, the electric capacity span of described filter capacitor can also be 220uF-330uF.
In the described yig tuned oscillator of the utility model, described filter capacitor can also be installed on the described external power supply voltage stabilizing plate one side relative with described sealing magnet, and with the position of described first feedthrough capacitor next-door neighbour.
In the described yig tuned oscillator of the utility model, described filter capacitor can also be a tantalum electric capacity.
In the described yig tuned oscillator of the utility model, described external power supply voltage stabilizing plate can also have the installation jack that is connected with described power supply positive-negative output end, and described feedthrough capacitor is inserted in the described installation jack through probe.
In the described yig tuned oscillator of the utility model; Can also have 6 equally distributed screw holes on the described external power supply voltage stabilizing plate; Through fixed screw and described screw hole, realize being connected of described external power supply voltage stabilizing plate and described sealing magnet.
And the utility model has also proposed a kind of spectrum measuring device, and it has aforesaid yig tuned oscillator.
The yig tuned oscillator of the described employing external power supply of the utility model, not only cost is low, and is easy for installation, and reduced greatly because the influence that outside noise produces oscillating circuit.
And the described yig tuned oscillator of the utility model also has following characteristics:
1, filter capacitor is installed in the back side of voltage stabilizing plate, and next-door neighbour's feedthrough capacitor, and not only good looking appearance, and filter effect is better, and phase noise is lower;
2, realize the voltage stabilizing plate and seal being connected of magnet that install more conveniently, structure is simpler through feedthrough capacitor.
Description of drawings
Fig. 1 is the basic principle structure chart of scan-type spectrum analyzer 1.
Fig. 2 is the basic principle structure chart of yig tuned oscillator 2.
Fig. 3 is the structural representation of the yig tuned oscillator 3 described in the embodiment.
Fig. 4 a is the front schematic view of external power supply voltage stabilizing plate 31 among the embodiment.
Fig. 4 b is the reverse side sketch map of external power supply voltage stabilizing plate 31 among the embodiment.
Embodiment
Introduce a preferred embodiments of the utility model below in conjunction with accompanying drawing.
With reference to figure 3; The described yig tuned oscillator 3 of the utility model comprises an external power supply voltage stabilizing plate 31, a sealing magnet 32 and an oscillating circuit board 33, and on the shell of sealing magnet 32, is connected with one first feedthrough capacitor 34, second feedthrough capacitor 35 and a SMA output interface 36.
Oscillating circuit board 33 is to adopt PCB technology to process, and an emitter feed circuit 331, ground capacity 332, YIG coupling unit 333, microwave transistor 334, collector electrode feed circuit 335, an output circuit 336 are installed on its pcb board.Wherein YIG coupling unit 333 is made up of coupling loop and YIG bead.
External power supply voltage stabilizing plate 31 is installed in the outside of sealing magnet 32; The power supply positive-negative output end of external power supply voltage stabilizing plate 31 is connected with second feedthrough capacitor 35 with first feedthrough capacitor 34 respectively; External power supply voltage stabilizing plate 31 earth terminals are connected with sealing magnet 32; Oscillating circuit board 33 is installed in the inside of sealing magnet 32; The positive-negative power input of oscillating circuit board 33 is connected with second feedthrough capacitor 35 with first feedthrough capacitor 34 respectively, and the output of oscillating circuit board 33 is connected with SMA output interface 36, and emitter feed circuit 331 and YIG coupling unit 333 are connected in series between the emitter of negative supply input and microwave transistor 334 of oscillating circuit board 33 successively; Between emitter feed circuit 331 and YIG coupling unit 333; Be connected with the ground capacity 332 of a ground connection, collector electrode feed circuit 335 is connected in series between the collector electrode of positive supply input and microwave transistor 334 of oscillating circuit board 33, and output circuit 336 is connected in series between the output of collector electrode and oscillating circuit board 33 of microwave transistor 334; In the power supply positive-negative output end of external power supply voltage stabilizing plate 31, only positive output end is connected with the filter capacitor 37 of a ground connection.
The positive-negative power input of oscillating circuit board 33 is connected with second feedthrough capacitor 35 with first feedthrough capacitor 34 respectively, thereby realizes and being electrically connected of external power source that the pcb board of oscillating circuit board 33 is installed on the cover plate that seals magnet 32; Emitter feed circuit 331 in the oscillating circuit board 33 is connected on the emitter of microwave transistor 334 through the coupling loop in the YIG coupling unit 333; Between emitter feed circuit 331 and YIG coupling unit 333, be connected with ground capacity 332, be used to realize the ground connection of radio frequency path; In the utility model; Ground capacity 332 forms through applying copper corrosion at pcb board, and the size of the area through the debugging copper sheet can change the input impedance of microwave transistor 334 emitters; Make it in operating frequency range, become negative resistance, thereby realize vibration.Collector electrode feed circuit 335 is added on the collector electrode of microwave transistor 334; Output circuit 336 also is added on the collector electrode of microwave transistor 334, and output circuit 336 comprises broadband matching circuit and buffering amplifier, and broadband matching network can influence the input impedance of microwave transistor 334; Make it in broadband range, be in the negative resistance state; Thereby increase the vibration bandwidth, can also the output impedance of microwave transistor 334 be compensated in frequency band internal reactance value, make it become very little; Be beneficial to the output of its power; Buffer amplifier is used to make power output to reach the output requirement, and the output of oscillating circuit board 33 is connected with SMA output interface 36, and the SMA output interface is fixed on the cover plate of sealing magnet 32 through fixed pedestal.
With reference to Fig. 4 a and Fig. 4 b, external power supply voltage stabilizing plate 31 adopts the double sided board design, and its back side is relative with sealing magnet 32.Supply socket 41 is installed on the front of voltage stabilizing plate 31, is used to connect power supply; The front also is equipped with the voltage stabilizing chip, is used to realize power source conversion and filter function.At the back side of external power supply voltage stabilizing plate 31, between the power supply positive output end and first feedthrough capacitor 34 of external power supply voltage stabilizing plate 31, the position that is close to first feedthrough capacitor 34 is equipped with the filter capacitor 37 of ground connection; Under the nonoverlapping situation in installation site; The installation site of first feedthrough capacitor 34 and filter capacitor 37 is good more closely more, and effectively the filtering outside noise reduces phase noise to the influence of oscillating circuit generation; In the present embodiment, filter capacitor 37 is selected the tantalum electric capacity of 220uF for use.
Also be welded with 8 on the external power supply voltage stabilizing plate 31 jack 43 is installed, with the contact pin plug-in mounting that seals the feedthrough capacitor on the magnet 32, realization is electrically connected with internal oscillator circuit plate 33.
At 6 screw holes of the even branch of the outward flange of external power supply voltage stabilizing plate 31, external power supply voltage stabilizing plate 31 and sealing magnet 32 are fixed on necessarily through 6 screw holes and 6 fixed screws.
As additional embodiments, filter capacitor 37 can be between 100-470uF value.
As additional embodiments, filter capacitor 37 can be between 220-330uF value.
As additional embodiments, filter capacitor 37 can be selected other electrochemical capacitors for use, for example alminium electrolytic condenser etc.
As additional embodiments, filter capacitor 37 can be installed in the front of external power supply voltage stabilizing plate 31, can reach effect attractive in appearance but be installed in the back side.
As additional embodiments, filter capacitor 37 can be installed in the position away from first feedthrough capacitor 34, but filter capacitor 37 is the closer to first feedthrough capacitor 34, and its filter effect is good more.
The utility model has also proposed a kind of spectrum measuring device, and it comprises RF signal input end, frequency mixer, amplifier; Filter, wave detector, local oscillator, sweeping generator and display etc.; Its basic principle is the method through the scanning local oscillator, makes the signal of radio-frequency input signals and local oscillator generation carry out mixing, with the intermediate-freuqncy signal that obtains amplify, after the Filtering Processing; Be output as vision signal through wave detector, pass through various computings again, final measurement is exported on display; Wherein said local oscillator adopts aforesaid yig tuned oscillator 3, and concrete implementation method repeats no more with reference to top description here.
The above-described specific embodiment that is merely the utility model; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (12)
1. yig tuned oscillator that adopts external power supply,
Comprise sealing magnet, oscillating circuit board, an external power supply voltage stabilizing plate and be installed in one first feedthrough capacitor, second feedthrough capacitor and the SMA output interface on the shell of described sealing magnet,
Described oscillating circuit board comprises a pcb board, and is installed in a microwave transistor on the described pcb board, an emitter feed circuit, a ground capacity, a YIG coupling unit, a collector electrode feed circuit, an output circuit,
Described external power supply voltage stabilizing plate is installed in the outside of described sealing magnet, and its power supply positive-negative output end is connected with second feedthrough capacitor with described first feedthrough capacitor respectively, and its earth terminal is connected with described sealing magnet,
Described oscillating circuit board is installed in the inside of described sealing magnet; The positive-negative power input of described oscillating circuit board is connected with second feedthrough capacitor with described first feedthrough capacitor respectively; The output of described oscillating circuit board is connected with described SMA output interface; Described emitter stage feed circuit and YIG coupling unit are connected in series between the emitter stage of negative supply input and described microwave transistor of described oscillating circuit board successively; Described ground capacity is connected between described emitter stage feed circuit and the described YIG coupling unit; Described colelctor electrode feed circuit is connected in series between the colelctor electrode of positive supply input and described microwave transistor of described oscillating circuit board; Described output circuit is connected in series between the output of colelctor electrode and described oscillating circuit board of described microwave transistor
It is characterized in that,
In the power supply positive-negative output end of described external power supply voltage stabilizing plate, only positive output end is connected with the filter capacitor of a ground connection, and its electric capacity span is 100uF-470uF.
2. yig tuned oscillator according to claim 1 is characterized in that, the electric capacity span of described filter capacitor is 220uF-330uF.
3. yig tuned oscillator according to claim 1 and 2 is characterized in that, described filter capacitor is installed on the described external power supply voltage stabilizing plate one side relative with described sealing magnet, and with the position of described first feedthrough capacitor next-door neighbour.
4. yig tuned oscillator according to claim 3 is characterized in that, described filter capacitor is a tantalum electric capacity.
5. yig tuned oscillator according to claim 4 is characterized in that, described external power supply voltage stabilizing plate has the installation jack that is connected with described power supply positive-negative output end, and described feedthrough capacitor is inserted in the described installation jack through probe.
6. yig tuned oscillator according to claim 5; It is characterized in that; Have 6 equally distributed screw holes on the described external power supply voltage stabilizing plate,, realize being connected of described external power supply voltage stabilizing plate and described sealing magnet through fixed screw and described screw hole.
7. spectrum measuring device; It is characterized in that; Has the described yig tuned oscillator of claim 1; Described yig tuned oscillator comprises sealing magnet, oscillating circuit board, an external power supply voltage stabilizing plate and is installed in one first feedthrough capacitor, second feedthrough capacitor and the SMA output interface on the shell of described sealing magnet
Described oscillating circuit board comprises a pcb board, and is installed in a microwave transistor on the described pcb board, an emitter feed circuit, a ground capacity, a YIG coupling unit, a collector electrode feed circuit, an output circuit,
Described external power supply voltage stabilizing plate is installed in the outside of described sealing magnet, and its power supply positive-negative output end is connected with second feedthrough capacitor with described first feedthrough capacitor respectively, and its earth terminal is connected with described sealing magnet,
Described oscillating circuit board is installed in the inside of described sealing magnet; The positive-negative power input of described oscillating circuit board is connected with second feedthrough capacitor with described first feedthrough capacitor respectively; The output of described oscillating circuit board is connected with described SMA output interface; Described emitter stage feed circuit and YIG coupling unit are connected in series between the emitter stage of negative supply input and described microwave transistor of described oscillating circuit board successively; Described ground capacity is connected between described emitter stage feed circuit and the described YIG coupling unit; Described colelctor electrode feed circuit is connected in series between the colelctor electrode of positive supply input and described microwave transistor of described oscillating circuit board; Described output circuit is connected in series between the output of colelctor electrode and described oscillating circuit board of described microwave transistor
In the power supply positive-negative output end of described external power supply voltage stabilizing plate, only positive output end is connected with the filter capacitor of a ground connection, and its electric capacity span is 100uF-470uF.
8. spectrum measuring device according to claim 7 is characterized in that, the electric capacity span of described filter capacitor is 220uF-330uF.
9. according to claim 7 or 8 described spectrum measuring devices, it is characterized in that described filter capacitor is installed on the described external power supply voltage stabilizing plate one side relative with described sealing magnet, and with the position of described first feedthrough capacitor next-door neighbour.
10. spectrum measuring device according to claim 9 is characterized in that, described filter capacitor is a tantalum electric capacity.
11. spectrum measuring device according to claim 10 is characterized in that, described external power supply voltage stabilizing plate has the installation jack that is connected with described power supply positive-negative output end, and described feedthrough capacitor is inserted in the described installation jack through probe.
12. spectrum measuring device according to claim 11; It is characterized in that; Have 6 equally distributed screw holes on the described external power supply voltage stabilizing plate,, realize being connected of described external power supply voltage stabilizing plate and described sealing magnet through fixed screw and described screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205059624U CN202374218U (en) | 2011-12-07 | 2011-12-07 | Spectrum measuring device and YIG tuned oscillator with external power supply thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205059624U CN202374218U (en) | 2011-12-07 | 2011-12-07 | Spectrum measuring device and YIG tuned oscillator with external power supply thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374218U true CN202374218U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205059624U Expired - Lifetime CN202374218U (en) | 2011-12-07 | 2011-12-07 | Spectrum measuring device and YIG tuned oscillator with external power supply thereof |
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| Country | Link |
|---|---|
| CN (1) | CN202374218U (en) |
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2011
- 2011-12-07 CN CN2011205059624U patent/CN202374218U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
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| CX01 | Expiry of patent term |