CN202364206U - Receiver circuit based on L wave band - Google Patents
Receiver circuit based on L wave band Download PDFInfo
- Publication number
- CN202364206U CN202364206U CN2011203948953U CN201120394895U CN202364206U CN 202364206 U CN202364206 U CN 202364206U CN 2011203948953 U CN2011203948953 U CN 2011203948953U CN 201120394895 U CN201120394895 U CN 201120394895U CN 202364206 U CN202364206 U CN 202364206U
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- receiver
- circuit based
- wave band
- mixer
- receiver circuit
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- Circuits Of Receivers In General (AREA)
Abstract
The utility model relates to a receiver circuit based on an L wave band. The receiver includes a logarithmic amplifier, an automatic gain control circuit, a band pass filter, a mixer, a preposition low-noise amplifier circuit, and a frequency synthesizer. The preposition low-noise amplifier circuit is connected with the band pass filter, the automatic gain control circuit, and the logarithmic amplifier in order via the mixer. The frequency synthesizer is connected with the mixer. The receiver circuit based on the L wave band is characterized in that the reception sensitivity is high, the action distance is long, the signal processing is rapid, and the real time response is excellent. The receiver circuit based on the L wave band is a unidirectional data link in a pseudo random omnidirectional broadcast mode, and the data information (identification code, position, speed, time and so on) transmission is carried out by an airplane regularly and automatically.
Description
Technical field
The utility model relates to a kind of receiver circuit based on L-band.
Background technology
Receiver is the core component in the navigator, and core index is sensitivity in the receiver, existing receiver sensitivity-87dBm, and sensitivity is not high.
Summary of the invention
In view of the deficiency that prior art exists, the utility model provides a kind of receiver circuit based on L-band, and this receiver is faster to the signal response speed that receives, sensitivity is higher, cooperate complete machine can carry out suitably reasonably gain and decay to received signal.
The utility model is for realizing above-mentioned purpose; The technical scheme of being taked is: a kind of receiver circuit based on L-band; It is characterized in that: comprise logarithmic amplifier, automatic gain control circuit; Band pass filter, frequency mixer, preposition LNA circuit, frequency synthesizer, said preposition LNA circuit is connected with band pass filter automatic gain control circuit, logarithmic amplifier through frequency mixer successively, and said frequency synthesizer is connected with frequency mixer.
The characteristics of the utility model are: this novel receiver design sensitivity will arrive-90dBm.Higher sensitivity does assurance for raising complete machine performance.Receiving sensitivity is high, operating distance is far away.Signal processing is fast, real-time response good.It is a kind of one-way data chain of pseudorandom omni broadcast pattern, sends data message (identification code, position, speed, the moment etc.) termly automatically by aircraft.Be mainly used in air-air mutual biography and Air-Ground down-transmitting data.Any aerial and ground have the aircraft of this ability will be termly through data chainning broadcasting its by the relevant data information that airborne navigational system and navigation system provide, any aerial and land equipment user's optionally connected these information of receipts processing in broadcasting the operating distance scope of this equipment.Which system sends the aircraft of broadcasting need not understand by in the broadcasting that receives it.
This receiver can be applicable in new projects' receiving system, for this system receives signal.
Description of drawings
Fig. 1 connects block diagram for the utility model circuit.
Embodiment
As shown in Figure 1; Receiver circuit based on L-band; Comprise logarithmic amplifier, automatic gain control circuit; Band pass filter, frequency mixer, preposition LNA circuit, frequency synthesizer, preposition LNA circuit is connected with band pass filter automatic gain control circuit, logarithmic amplifier through frequency mixer successively, and frequency synthesizer is connected with frequency mixer.
Said frequencies synthesizer: control phase discriminator MC145193 chip and 10MHz crystal oscillator and voltage controlled oscillator by PIC12C508 and be built into phase-locked loop, output frequency 1030MHz signal.
Above-mentioned frequency mixer: adopt the ADE-11X passive device, accurately carry out mixing output 60MHz, convert high-frequency signal to intermediate-freuqncy signal convenient signal processing.
Above-mentioned band pass filter: B60-10/T-6P1A type 60MHz band pass filter is used for the outer clutter of filtering ± 5MHz.
Automatic gain control circuit: the control end voltage adjustment through RVA-2500 is carried out suitable decay to the 60MHz bandpass signal, exports to logarithm then and amplifies.
Above-mentioned logarithmic amplifier: use the AD8309 logarithmic amplifier 60MHz intermediate-freuqncy signal is carried out the logarithm amplification, restore aircraft at this with visual form and send the various information that 1090MHz comprises.
Working method: ground station uses the omnirange or the sector directions combined antenna of non-scanning, and low-noise receiver, only on the 1090MHz frequency, receives the spontaneous report of ADS-B of aircraft.Single omnidirectional antenna adds low-noise preamplifier can cover 50 nautical miles.The sector directions high-gain aerial adds independently low-noise receiver and can reach 200 nautical miles and upload distance range.
The ADS-B receiver solves spontaneous report from the 1090MHz signal that aircraft sends, pass to the ADS-B system master with the vision signal form, and supplying the master control analyzing and processing to obtain needs information.This receiver volume is little, wherein integrated frequency mixer, and frequency synthesizer, logarithm amplify has realized the basic handling to signal.The course of work is antenna to be received the 1030MHz signal that 1090MHz signal and the frequency synthesizer of aircraft produce carry out mixing, converts the 60MHz intermediate frequency to, then the 60MHz intermediate frequency is carried out the vision signal that processing such as logarithm amplification solves the information that aircraft sends.
Claims (1)
1. receiver circuit based on L-band; It is characterized in that: comprise logarithmic amplifier, automatic gain control circuit; Band pass filter, frequency mixer, preposition LNA circuit, frequency synthesizer; Said preposition LNA circuit is connected with band pass filter automatic gain control circuit, logarithmic amplifier through frequency mixer successively, and said frequency synthesizer is connected with frequency mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203948953U CN202364206U (en) | 2011-10-17 | 2011-10-17 | Receiver circuit based on L wave band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203948953U CN202364206U (en) | 2011-10-17 | 2011-10-17 | Receiver circuit based on L wave band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364206U true CN202364206U (en) | 2012-08-01 |
Family
ID=46575358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203948953U Expired - Lifetime CN202364206U (en) | 2011-10-17 | 2011-10-17 | Receiver circuit based on L wave band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202364206U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730547A (en) * | 2015-03-25 | 2015-06-24 | 天津七六四通信导航技术有限公司 | Logarithmic amplifying circuit applied to receiver of Tacan ground device |
| CN111049487A (en) * | 2019-12-12 | 2020-04-21 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Automatic gain control circuit and control method |
-
2011
- 2011-10-17 CN CN2011203948953U patent/CN202364206U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730547A (en) * | 2015-03-25 | 2015-06-24 | 天津七六四通信导航技术有限公司 | Logarithmic amplifying circuit applied to receiver of Tacan ground device |
| CN104730547B (en) * | 2015-03-25 | 2017-06-09 | 天津七六四通信导航技术有限公司 | It is applied to the logarithmic amplifying circuit of Tacan ground installation receiver |
| CN111049487A (en) * | 2019-12-12 | 2020-04-21 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Automatic gain control circuit and control method |
| CN111049487B (en) * | 2019-12-12 | 2023-12-29 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Automatic gain control circuit and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |