CN108233963A - Novel measuring appearance receiver low noise amplifier circuit - Google Patents
Novel measuring appearance receiver low noise amplifier circuit Download PDFInfo
- Publication number
- CN108233963A CN108233963A CN201711169198.6A CN201711169198A CN108233963A CN 108233963 A CN108233963 A CN 108233963A CN 201711169198 A CN201711169198 A CN 201711169198A CN 108233963 A CN108233963 A CN 108233963A
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- China
- Prior art keywords
- noise amplifier
- electric bridge
- low
- feed point
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The present invention relates to novel measuring appearance receiver low noise amplifier circuit, including level-one low-noise amplifier, two level low-noise amplifier, dielectric filter, SAW filter, attenuator, load and electric bridge；It is characterized in that the quantity of electric bridge is 1, simultaneously including two feed points, that is feed point a and feed point b, the carrier signal that the two-way that antenna receives has 90 ° of phase differences enter an electric bridge by feed point a and feed point b respectively, two paths of signals phase and power combing are completed in the electric bridge；The output terminal of electric bridge connects load and dielectric filter simultaneously, the resistance value of the load is 50 ohm, the output terminal of the dielectric filter passes sequentially through level-one low-noise amplifier, SAW filter, two level low-noise amplifier and is connected with attenuator, the output terminal output signal of attenuator；The electric bridge is 90 ° of electric bridges that Insertion Loss is 0.2 ~ 0.3dB.
Description
Technical field
The present invention relates to a kind of survey appearance receptions based on buildings roll attitudes such as the Big Dipper, GPS communication testing base station, high towers
Machine technical field of circuit design, particularly a kind of novel measuring appearance receiver low noise amplifier circuit, the circuit use double-fed point mould
Formula receives information.
Background technology
In the Big Dipper, GPS receiver communication test field, there are many various receiver communication test using background, also have
Diversified antenna and receiver match pattern.In appearance receiver is surveyed, communication system is more demanding to carrier phase, needs
Low noise amplification again after the out of phase signal calibration to same-phase that receiver circuit receives antenna.Common survey appearance receiver
Low noise amplifier circuit uses four feed point signal source receiving machines (referring to Fig. 2) of three electric bridge feeding modes, which puts
Big circuit includes three electric bridges, is required to connect 50 ohm of load on each electric bridge, and there are four antenna feed point, each two antenna feeds
Point receives the carrier signal that one group of phase difference is 90 ° and enters in a single bridge, and the output signal of the two single bridges passes through third
Single bridge is filtered again after being synthesized, should during not only increase signal link loss, also increase receiver into
This, is unfavorable for further promoting the use of.
Invention content
For the deficiency of four common feed point signal source receiving machines, the technical problem to be solved by the present invention is to provide a kind of new
Type surveys appearance receiver low noise amplifier circuit.The amplifying circuit using four feed point signal source receiving machines of the feeding mode of three electric bridges as
Basis optimizes, and significantly reduces product cost, enhances product performance.
The present invention solve the technical problem the technical solution adopted is that：A kind of novel measuring appearance receiver low noise is provided to put
Big circuit including level-one low-noise amplifier, two level low-noise amplifier, dielectric filter, SAW filter, attenuator, is born
Load and electric bridge；It is characterized in that the quantity of electric bridge is 1, while including two feed points, i.e. feed point a and feed point b, antenna reception
The carrier signal that two-way has 90 ° of phase differences enters an electric bridge by feed point a and feed point b respectively, and two are completed in the electric bridge
Road signal phase and power combing；The output terminal of electric bridge connects load and dielectric filter simultaneously, and the resistance value of the load is 50
Ohm, the output terminal of the dielectric filter pass sequentially through level-one low-noise amplifier, SAW filter, two level low noise amplification
Device is connected with attenuator, the output terminal output signal of attenuator；The electric bridge is 90 ° of electric bridges that Insertion Loss is 0.2~0.3dB.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is operated in 90 degree of electric bridges of the Big Dipper, GPS frequency by being connected at antenna feed point, and double-fed point is believed
The dephased received signal power synthesis of tool that source receives, after the processing such as wave filter, amplifier, can obtain essence
High output signal is spent, and the process can be reduced in the prior art due to bringing signal amplitude characteristic using multiple electric bridges
Loss can significantly improve the receiving sensitivity that the Big Dipper surveys appearance system.Advantageous effect is mainly reflected in following several respects：
1st, the present invention uses single bridges, and Insertion Loss is small.The loss that general single bridges Insertion Loss is 0.2~0.3dB, than common work(
The 3dB Insertion Loss of rate synthesizer is with the obvious advantage；
2nd, the present invention single bridges pattern that uses more at low cost than common three electric bridges pattern 2/3rds；
3rd, the size of single bridges that the present invention uses is only 6.34*5.08mm, single 4 yuan or so of cost, occupies printed board
Area it is small, printed board copper consumption is small, significantly reduces the cost of amplifying circuit, and area is also small for microstrip line electric bridge
Very much, while the cost needed for the microwave board of microstrip line space required is but very high, is unfavorable for promoting the use of.
Description of the drawings
Fig. 1 is the structure diagram of novel measuring appearance receiver low noise amplifier circuit of the present invention.
Fig. 2 surveys appearance receiver circuit functional block diagram for common four feed points information source.
In figure, 1 level-one low-noise amplifier, 2 two level low-noise amplifiers, 3 dielectric filters, 4 SAW filters, 5 are declined
Subtract device, 6 loads, 7 electric bridges.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage are clearer, carry out below in conjunction with the accompanying drawings detailed
Thin description.
Novel measuring appearance receiver low noise amplifier circuit (abbreviation amplifying circuit, referring to Fig. 1) of the present invention is including level-one low noise
Acoustic amplifier 1, two level low-noise amplifier 2, dielectric filter 3, SAW filter 4, attenuator 5, load 6 and an electric bridge 7,
The carrier signal that the two-way that antenna receives has 90 ° of phase differences enters an electric bridge by feed point a and feed point b respectively, in the electricity
Two paths of signals phase and power combing are completed in bridge；The output terminal of electric bridge connects load and dielectric filter, the load simultaneously
Resistance value for 50 ohm, the output terminal of the dielectric filter passes sequentially through level-one low-noise amplifier, SAW filter, two level
Low-noise amplifier is connected with attenuator, the output terminal output signal of attenuator；The electric bridge is that Insertion Loss is 0.2~0.3dB's
The ground connection of 90 ° of electric bridges, ground hole and antenna.
Further characteristic of the invention is that the electric bridge is 90 ° of electric bridges that Insertion Loss is 0.25dB.
In amplifying circuit of the present invention the access way of antenna signal source be double-fed point information source state, the two-way that antenna receives
Carrier signal with 90 degree of phase differences is entered after amplifying circuit through an electric bridge by two different feed points by two respectively
Road signal is by completing two paths of signals phase and power combing after phase alignment, using dielectric filter frequency-selecting, dielectric filter
After device filters out band external information, required working frequency information is transferred to level-one low-noise amplifier and carries out signal amplification, so
Carry out sound table filtering frequency-selecting afterwards, then after being amplified to certain power level after two level low-noise amplifier, output signal will be believed
It number exports and to give base-band information processing unit, complete the amplification process of signal.
Fig. 2 is that common four feed point information sources survey appearance receiver circuit functional block diagram.As shown in FIG., there are three common in four feed points
Electric bridge, and circuit is relative complex, cost is higher, actually uses receiver effect and Fig. 1 is equal to each other.
The present invention does not address part and is suitable for the prior art, and involved component can be commercially available.
Claims (2)
1. a kind of novel measuring appearance receiver low noise amplifier circuit, including level-one low-noise amplifier, two level low-noise amplifier,
Dielectric filter, SAW filter, attenuator, load and electric bridge；It is characterized in that the quantity of electric bridge is 1, while including two
A feed point, i.e. feed point a and feed point b, the carrier signal that the two-way that antenna receives has 90 ° of phase differences pass through feed point a and feedback respectively
Point b enters an electric bridge, and two paths of signals phase and power combing are completed in the electric bridge；The output terminal of electric bridge connects load simultaneously
And dielectric filter, the resistance value of the load is 50 ohm, and the output terminal of the dielectric filter passes sequentially through level-one low noise
Amplifier, SAW filter, two level low-noise amplifier are connected with attenuator, the output terminal output signal of attenuator；The electricity
Bridge is 90 ° of electric bridges that Insertion Loss is 0.2 ~ 0.3dB.
2. novel measuring appearance receiver low noise amplifier circuit according to claim 1, it is characterised in that the electric bridge is slotting
Damage 90 ° of electric bridges for 0.25dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711169198.6A CN108233963A (en) | 2017-11-22 | 2017-11-22 | Novel measuring appearance receiver low noise amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711169198.6A CN108233963A (en) | 2017-11-22 | 2017-11-22 | Novel measuring appearance receiver low noise amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108233963A true CN108233963A (en) | 2018-06-29 |
Family
ID=62652830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711169198.6A Pending CN108233963A (en) | 2017-11-22 | 2017-11-22 | Novel measuring appearance receiver low noise amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108233963A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201414112Y (en) * | 2009-06-17 | 2010-02-24 | 泉州市协高微波电子有限公司 | Low-noise amplifier used at mobile communication repeater |
| CN202678508U (en) * | 2011-12-05 | 2013-01-16 | 上海海积信息科技有限公司 | Satellite microstrip receiving antenna for receiving frequency bands of GPS L1 and Beidou II B1 |
| CN204517760U (en) * | 2015-05-21 | 2015-07-29 | 西安邮电大学 | A kind of Big Dipper B3 band low noise amplifier circuit |
| CN205142190U (en) * | 2015-10-30 | 2016-04-06 | 安徽四创电子股份有限公司 | Frequency conversion mirror image of X wave band suppresses receiver |
-
2017
- 2017-11-22 CN CN201711169198.6A patent/CN108233963A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201414112Y (en) * | 2009-06-17 | 2010-02-24 | 泉州市协高微波电子有限公司 | Low-noise amplifier used at mobile communication repeater |
| CN202678508U (en) * | 2011-12-05 | 2013-01-16 | 上海海积信息科技有限公司 | Satellite microstrip receiving antenna for receiving frequency bands of GPS L1 and Beidou II B1 |
| CN204517760U (en) * | 2015-05-21 | 2015-07-29 | 西安邮电大学 | A kind of Big Dipper B3 band low noise amplifier circuit |
| CN205142190U (en) * | 2015-10-30 | 2016-04-06 | 安徽四创电子股份有限公司 | Frequency conversion mirror image of X wave band suppresses receiver |
Non-Patent Citations (4)
| Title |
|---|
| 中国卫星导航定位协会: "《卫星导航定位与北斗系统应用 壮大北斗产业 创新位置服务 2014》", 30 September 2014 * |
| 刘宏学: "《功率合成技术在全固态发射机中的应用实例》", 《电声技术》 * |
| 孙国泉等: "《一种新型环形电桥功率分配/合成器设计》", 《微波学报》 * |
| 樊锡元等: "《基于波导合成高效高功率密度Ｋｕ波段功放》", 《雷达科学与技术》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |