CN103560756A - Double-frequency amplification circuit - Google Patents
Double-frequency amplification circuit Download PDFInfo
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- CN103560756A CN103560756A CN201310516394.1A CN201310516394A CN103560756A CN 103560756 A CN103560756 A CN 103560756A CN 201310516394 A CN201310516394 A CN 201310516394A CN 103560756 A CN103560756 A CN 103560756A
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- matching module
- integrated pipe
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Abstract
The invention provides a double-frequency amplification circuit which comprises a first input matching module, a first-stage high gain integrated tube, a first output matching module, a band-pass filter, a second input matching module, a second-stage high gain integrated tube and a second output matching module, wherein the first input matching module comprises one end used for receiving a signal; the other end of the first input matching module is connected to an input end of the first-stage high gain integrated tube; the output end of the first-stage high gain integrated tube is connected to the input end of the band-pass filter through the first output matching module; the output end of the band-pass filter is connected to the input end of the second-stage high gain integrated tube through the second input matching module; the output end of the second-stage high gain integrated tube is connected to the second output matching module. Compared with the normal condition in the industry, the provided double-frequency amplification circuit makes great improvement in the performance indexes, including, gain amplification times, standing-wave ratio, sensitivity and power consumption.
Description
[technical field]
The present invention relates to space orientation technique, relate in particular to a kind of double frequency amplifying circuit.
[background technology]
Beidou satellite navigation system is the China's global positioning system of global positioning satellite and the communication system ，Shi Ji U.S. of development Muscovite GLONASS the 3rd ripe satellite navigation system afterwards of unifying voluntarily.Beidou satellite navigation system is comprised of vacant terminal, ground surface end and user side, can be in the world round-the-clock, round-the-clock provides high accuracy, highly reliable location, navigation, time service service for all types of user, and tool short message communication capacity, tentatively possessed area navigation, location and time service ability, can be used for providing the functions such as passive location, navigation, time service service.
Beidou satellite navigation system user side is for receiving the signal that big-dipper satellite sends, and carries out data processing, positions.Then, the common employing of user side of the prior art is all non-integrated chip, is designing and matching comparatively complexity, and cost is higher.In addition, because the time of Beidou satellite navigation system invested in plantization application is not long, each side technology also has lifting and improved space, especially from for passing judgment on the indexs such as gain multiplication factor, standing-wave ratio, sensitivity and power consumption of Beidou satellite navigation system performance, Beidou satellite navigation system also has the space further promoting.
[summary of the invention]
The present invention is intended to solve above-mentioned problems of the prior art, proposes a kind of double frequency amplifying circuit.
The double frequency amplifying circuit that the present invention proposes comprises: the first input matching module, first order high-gain integrated pipe, the first output matching module, band pass filter, the second input matching module, second level high-gain integrated pipe and the second output matching module.Wherein, described the first input matching module has for receiving one end of described signal; The other end of described the first input matching module is connected with the input of described first order high-gain integrated pipe; The output of described first order high-gain integrated pipe is connected with the input of described band pass filter by described the first output matching module; The output of described bandpass filter is connected with the input of described second level high-gain integrated pipe by described the second input matching module; The output of described second level high-gain integrated pipe is connected with described the second output matching module.
The double frequency amplifying circuit that the present invention proposes adopts integrated chip to realize signal to amplify, and in design with match simplyr, cost is lower, and easily extensive research and development are produced; In addition the double frequency amplifying circuit that, the present invention proposes is compared industry generalized situations and is had a distinct increment in the performance index aspect four of gain multiplication factors, standing-wave ratio, sensitivity, power consumption.
[accompanying drawing explanation]
Fig. 1 is the double frequency amplification circuit structure schematic diagram of one embodiment of the invention.
Fig. 2 is the double frequency amplifying circuit device connection layout of one embodiment of the present invention.
[embodiment]
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in further detail.Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining technical scheme of the present invention, and do not should be understood to limitation of the present invention.
In description of the invention, term " interior ", " outward ", " longitudinally ", " laterally ", " on ", orientation or the position relationship of the indication such as D score, " top ", " end " be based on orientation shown in the drawings or position relationship, be only the present invention for convenience of description rather than require the present invention with specific orientation structure and operation, therefore not should be understood to limitation of the present invention.
The invention provides a kind of double frequency amplifying circuit, for signal is carried out to double frequency amplification, can be used in the Big Dipper+GPS navigation system, satellite-signal being strengthened.As shown in Figure 1, the double frequency amplifying circuit that the present invention proposes comprises: the first input matching module 100, first order high-gain integrated pipe 200, the first output matching module 300, band pass filter 400, the second input matching module 500, second level high-gain integrated pipe 600 and the second output matching module 700.、
The first input matching module 100 has for receiving one end of described satellite-signal, and the other end of the first input matching module 100 is connected with the input of first order high-gain integrated pipe 200.
The output of first order high-gain integrated pipe 200 is connected with the input of band pass filter 400 by the first output matching module 300.
The output of bandpass filter 400 is connected with the input of second level high-gain integrated pipe 600 by the second input matching module 500.
The output of second level high-gain integrated pipe 600 is connected with the second output matching module 700.
Wherein, described the first input matching module 100, the first output matching module 300, the second input matching module 500 and the second output matching module 700 include the first electric capacity and the first inductance, the capacitance of described the first electric capacity is 18.5PF to 21PF, and the inductance value of described the first inductance is 4NH to 5NH.
First order high-gain integrated pipe 200 and second level high-gain integrated pipe 600 can be XN255 type high-gain integrated pipe or BTF740 type high-gain integrated pipe.
In a preferred embodiment of double frequency amplifying circuit of the present invention, as shown in Figure 2, first order high-gain integrated pipe 200 and second level high-gain integrated pipe 600 adopt XN255 type high-gain integrated pipe, and the capacitance of described the first electric capacity is 20PF, and the inductance value of described the first inductance is 4.7NH.
Preferably, the input of band pass filter 400 is connected with the second electric capacity for finely tuning, the output of band pass filter 400 is connected with the 3rd electric capacity for finely tuning, and the capacitance of described the second electric capacity is 15PF to 30PF, and the capacitance of described the 3rd electric capacity is 25PF to 40PF.Preferably, the capacitance of described the second electric capacity is 20PF, and the capacitance of described the 3rd electric capacity is 30PF.
Wherein, described double frequency amplifying circuit also comprises the power module that is used to first order high-gain integrated pipe 200 and 600 power supplies of second level high-gain integrated pipe.In the present embodiment, described power module provides the voltage of 3.3V for first order high-gain integrated pipe 200 and second level high-gain integrated pipe 600.
Preferably, described power module is electrically connected to first order high-gain integrated pipe 200 and second level high-gain integrated pipe 600 by filter capacitor, the capacitance size of described filter capacitor is 0.1UF to 0.5UF, and in the present embodiment, the capacitance of described filter capacitor size is 0.1UF; Described power module is also further electrically connected to first order high-gain integrated pipe 200 and second level high-gain integrated pipe 600 by feed inductance, the inductance value size of described feed inductance is 30NH to 50NH, in the present embodiment, the inductance value of described feed inductance size is 39NH.
Through experiment test, confirm, the double frequency amplifying circuit that the present invention proposes promotes to some extent in the performance aspect following four: 1) gain multiplication factor, and gain multiplication factor is the index of gauge signal intensity, it directly reflects the power of later stage terminal acknowledge(ment) signal.The two gain integrated pipes that design employing according to the present invention are comparatively considerable to the amplification effect of signal strength signal intensity, and multiplication factor is greater than 30DB, and the general multiplication factor of industry is only greater than 28DB; 2) standing-wave ratio, standing-wave ratio is the ratio of reflecting voltage, is the important indicator of weighing amplifying circuit performance.Standing-wave ratio is generally the ratio of reflected voltage coefficient and incident voltage coefficient.The double frequency amplifying circuit standing-wave ratio that the present invention proposes is less than 1.5:1, and the most index request of industry is only less than 1.8:1; 3) sensitivity, sensitivity is the important indicator of weighing amplifying circuit inbound pacing, terminal system is had to the impact of delay performance.The PCB sensitivity of the double frequency amplifying circuit that the present invention proposes is less than 1.5, and the most index request of industry is only for being less than 2.0; 4) low-power consumption, low-power consumption is the standard of weighing amplifying circuit power consumption, according to design, selects originally smaller lower powered integrated pipe to reduce power consumption.PCB electric current of the present invention is 8MA, and the most index request electric current of industry is on 40MA, and the present invention can reduce product power consumption.
By above-mentioned experimental result, to when analyzing and can find out, the double frequency amplifying circuit that the present invention proposes is compared industry generalized situations and is had a distinct increment in the performance index aspect above four.
Although the present invention is described with reference to current better embodiment; but those skilled in the art will be understood that; above-mentioned better embodiment is only used for explaining and illustrating technical scheme of the present invention; and be not used for limiting protection scope of the present invention; any within the spirit and principles in the present invention scope; any modification of doing, equivalent replacement, distortion, improvement etc., within all should being included in claim protection range of the present invention.
Claims (9)
1. a double frequency amplifying circuit, for signal is carried out to double frequency amplification, comprise: the first input matching module, first order high-gain integrated pipe, the first output matching module, band pass filter, the second input matching module, second level high-gain integrated pipe and the second output matching module, wherein
Described the first input matching module has for receiving one end of described signal;
The other end of described the first input matching module is connected with the input of described first order high-gain integrated pipe;
The output of described first order high-gain integrated pipe is connected with the input of described band pass filter by described the first output matching module;
The output of described bandpass filter is connected with the input of described second level high-gain integrated pipe by described the second input matching module;
The output of described second level high-gain integrated pipe is connected with described the second output matching module.
2. double frequency amplifying circuit according to claim 1, is characterized in that, described matching module comprises the first electric capacity and the first inductance, and the capacitance of described the first electric capacity is 18.5PF to 21PF, and the inductance value of described the first inductance is 4NH to 5NH.
3. double frequency amplifying circuit according to claim 1, is characterized in that, the capacitance of described the first electric capacity is 20PF, and the inductance value of described the first inductance is 4.7NH.
4. double frequency amplifying circuit according to claim 1, is characterized in that, described first order high-gain integrated pipe and described second level high-gain integrated pipe are XN255 type high-gain integrated pipe or BTF740 type high-gain integrated pipe.
5. double frequency amplifying circuit according to claim 1, it is characterized in that, the input of described band pass filter is connected with the second electric capacity for finely tuning, the output of described band pass filter is connected with the 3rd electric capacity for finely tuning, the capacitance of described the second electric capacity is 15PF to 30PF, and the capacitance of described the 3rd electric capacity is 25PF to 40PF.
6. double frequency amplifying circuit according to claim 5, is characterized in that, the capacitance of described the second electric capacity is 20PF, and the capacitance of described the 3rd electric capacity is 30PF.
7. double frequency amplifying circuit according to claim 1, is characterized in that, also comprises the power module that is used to described first order high-gain integrated pipe and the power supply of second level high-gain integrated pipe.
8. double frequency amplifying circuit according to claim 7, is characterized in that, described power module is electrically connected to described first order high-gain integrated pipe and second level high-gain integrated pipe by filter capacitor.
9. double frequency amplifying circuit according to claim 7, is characterized in that, described power module is electrically connected to described first order high-gain integrated pipe and second level high-gain integrated pipe by feed inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310516394.1A CN103560756A (en) | 2013-10-28 | 2013-10-28 | Double-frequency amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310516394.1A CN103560756A (en) | 2013-10-28 | 2013-10-28 | Double-frequency amplification circuit |
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| Publication Number | Publication Date |
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| CN103560756A true CN103560756A (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310516394.1A Pending CN103560756A (en) | 2013-10-28 | 2013-10-28 | Double-frequency amplification circuit |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6384688B1 (en) * | 1998-07-08 | 2002-05-07 | Hitachi, Ltd. | High-frequency power amplifier module |
| CN201663583U (en) * | 2010-03-10 | 2010-12-01 | 广州市圣大电子有限公司 | Beidou low-noise amplifier |
-
2013
- 2013-10-28 CN CN201310516394.1A patent/CN103560756A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6384688B1 (en) * | 1998-07-08 | 2002-05-07 | Hitachi, Ltd. | High-frequency power amplifier module |
| CN201663583U (en) * | 2010-03-10 | 2010-12-01 | 广州市圣大电子有限公司 | Beidou low-noise amplifier |
Non-Patent Citations (1)
| Title |
|---|
| 苏俊: "《GPS、北斗双模用户机双频段低噪声放大器设计》", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
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Application publication date: 20140205 |