CN203326958U - Multichannel low-noise amplifier - Google Patents
Multichannel low-noise amplifier Download PDFInfo
- Publication number
- CN203326958U CN203326958U CN2013203924801U CN201320392480U CN203326958U CN 203326958 U CN203326958 U CN 203326958U CN 2013203924801 U CN2013203924801 U CN 2013203924801U CN 201320392480 U CN201320392480 U CN 201320392480U CN 203326958 U CN203326958 U CN 203326958U
- Authority
- CN
- China
- Prior art keywords
- duplexer
- amplifier
- noise amplifier
- stage amplifier
- diplexer
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses a multichannel low-noise amplifier which comprises the following components: an LNA, a second-stage amplifier, a first diplexer, a low-frequency-band wave filter, a high-frequency-band wave filter, a second diplexer and a third-stage amplifier; wherein, the LNA, the second-stage amplifier and the first diplexer are successively connected. The output end of the first diplexer is divided into two paths. One path of the output end of the first diplexer is connected with the low-frequency-band wave filter, and the other path is connected with the high-frequency-band wave filter. The output end of the low-frequency-band wave filter and the output end of the high-frequency-band wave filter are combined for accessing into the second diplexer. The output end of the second diplexer is connected with the third-stage amplifier. According to the multichannel low-noise amplifier, three stages of amplification are adopted for ensuring enough high gain of the signal. Simultaneously the signal is divided into paths for processing, and multiple channels are realized. Each pass of signal passes through a wave filter for ensuring outband suppression. Furthermore the multichannel low-noise amplifier has the following advantages: simple structure, and stable performance.
Description
Technical field
The utility model relates to a kind of low noise amplifier, particularly a kind of multichannel low noise amplifier.
Background technology
Low noise amplifier is as the of paramount importance device of radio-frequency front-end, its performance quality has determined the radio-frequency channel signal quality basically, development along with the communication technology, telecommunication circuit is more and more higher for the requirement of each performance of low noise amplifier, especially the lift-off of the Big Dipper, a plurality of channel signals carry out treatment technology requirement low noise amplifier simultaneously not only to have enough low noise and also needs a plurality of passages to be amplified the signal of different frequency range, the multiple that while also needs the signal of different frequency range to amplify is not identical yet, the multichannel low noise amplifier also just arises at the historic moment, but the Out-of-band rejection of multichannel low noise amplifier usually can not meet the requirement of telecommunication circuit.
The utility model content
For the problems referred to above, the utility model discloses a kind of multichannel low noise amplifier, adopt three grades of amplifications, guarantee that signal has sufficiently high gain, signal is processed along separate routes simultaneously, realize multichannel, each guarantees Out-of-band rejection through a filter every road signal, simple in structure, stable performance.
In order to address the above problem, the technical solution adopted in the utility model is:
A kind of multichannel low noise amplifier, comprise LNA, two-stage amplifier, first duplexer, low band filter, high band filter, the second duplexer and third stage amplifier; Wherein, LNA, two-stage amplifier, first duplexer are connected successively, the output of first duplexer is divided into two-way, wherein a road connects low band filter, another road connects high band filter, the output of low band filter and high band filter accesses respectively the second duplexer, and the output of the second duplexer connects third stage amplifier.
As further preferred embodiment of the present utility model, the model of described LNA is SPF-5043z.
As further preferred embodiment of the present utility model, the model of described two-stage amplifier is SGL-0622z.
As further preferred embodiment of the present utility model, the model of described third stage amplifier is HMC474SC70.
As further preferred embodiment of the present utility model, described first duplexer and the second duplexer are the filter that adopts lumped-parameter element.
This utility model compared with prior art, has following technique effect:
First: signal is processed along separate routes, guaranteed Out-of-band rejection;
Second: multistagely amplified, filtering, improve gain;
The 3rd: simple in structure, practical reliable, stable performance.
The accompanying drawing explanation
Fig. 1 is the circuit system module map.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
The utility model discloses a kind of multichannel low noise amplifier, as shown in Figure 1, comprises LNA, two-stage amplifier, first duplexer, low band filter, high band filter, the second duplexer and third stage amplifier; Wherein, LNA, two-stage amplifier, first duplexer are connected successively, the output of first duplexer is divided into two-way, wherein a road connects low band filter, another road connects high band filter, the second duplexer is accessed on the synthetic road of the output of low band filter and high band filter, and the output of the second duplexer connects third stage amplifier.
Signal is through LNA and twice amplification of two-stage amplifier, LNA adopts is that the low noise amplifier chip that the model of Microtronic A/S is SPF-5043z is thought far to reach by the U.S., its operating frequency is 400MHz-3GHz, gain is 18.5dB, noise factor is 0.6dB, two-stage amplifier adopts is that the amplifier chip that the model of Microtronic A/S is SGL-0622z is thought far to reach by the U.S., its working frequency range is 100MHz-4GHz, gain is 28.5dB, noise factor is 1.5dB, enter first duplexer through amplifying signal and be divided into two paths of signals, two paths of signals separately, one tunnel is the filter in low-frequency range through passband, one tunnel is the filter at high band through passband, two filters have guaranteed that the signal of two frequency ranges has enough Out-of-band rejections, then a synthetic road is through duplexer 2, first duplexer and the second duplexer are the filters that adopts integrated components and parts simulation calculation, through the second duplexer, synthetic signal passes through the amplification of third stage amplifier again, final output, third stage amplifier adopts is the amplifier chip that the model of Hittite company is HMC474SC70, its operating frequency is DC-6GHz, gain is 15dB, noise factor is 3dB.
In order to meet the demand of high-gain, amplifier is when being designed, gain has left enough surpluses, can find out that according to the gain multichannel low noise amplifier of three above-mentioned low noise amplifiers the overall gain of multichannel low noise amplifier is 61dB, the user can be decayed to gain according to the demand of oneself, simultaneously in order to prevent that amplifier from entering saturation point, directly add attenuator at LNA and two-stage amplifier, also added attenuator before third stage amplifier, the Out-of-band rejection of two filters is the keys that realize the multichannel low noise amplifier, stack place of two filter frequency ranges should be noted that especially, require the Out-of-band rejection at the low frequency place of high-frequency band filter to want enough high.
The above is explained in detail execution mode of the present utility model by reference to the accompanying drawings, but the utility model is not limited to above-mentioned execution mode, in the ken possessed those of ordinary skills, can also under the prerequisite that does not break away from the utility model aim, make a variety of changes.
Claims (5)
1. a multichannel low noise amplifier, is characterized in that: comprise LNA, two-stage amplifier, first duplexer, low band filter, high band filter, the second duplexer and third stage amplifier; Wherein, LNA, two-stage amplifier, first duplexer are connected successively, the output of first duplexer is divided into two-way, wherein a road connects low band filter, another road connects high band filter, the output of low band filter and high band filter accesses respectively the second duplexer, and the output of the second duplexer connects third stage amplifier.
2. a kind of multichannel low noise amplifier as claimed in claim 1, it is characterized in that: the model of described LNA is SPF-5043z.
3. a kind of multichannel low noise amplifier as claimed in claim 1, it is characterized in that: the model of described two-stage amplifier is SGL-0622z.
4. a kind of multichannel low noise amplifier as claimed in claim 1, it is characterized in that: the model of described third stage amplifier is HMC474SC70.
5. a kind of multichannel low noise amplifier as claimed in claim 1 is characterized in that: described first duplexer and the second duplexer are the filter that adopts lumped-parameter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203924801U CN203326958U (en) | 2013-07-03 | 2013-07-03 | Multichannel low-noise amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203924801U CN203326958U (en) | 2013-07-03 | 2013-07-03 | Multichannel low-noise amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326958U true CN203326958U (en) | 2013-12-04 |
Family
ID=49666249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203924801U Expired - Fee Related CN203326958U (en) | 2013-07-03 | 2013-07-03 | Multichannel low-noise amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401509A (en) * | 2013-07-03 | 2013-11-20 | 吴江市同心电子科技有限公司 | Multichannel low noise amplifier |
-
2013
- 2013-07-03 CN CN2013203924801U patent/CN203326958U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401509A (en) * | 2013-07-03 | 2013-11-20 | 吴江市同心电子科技有限公司 | Multichannel low noise amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203434938U (en) | Ultra-wideband high-gain low-noise amplifier | |
| CN103117711B (en) | Monolithic integrated radio frequency high-gain low-noise amplifier | |
| CN103391054A (en) | Ultra wideband high-gain low-noise amplifier | |
| CN101714852A (en) | Double-frequency radio-frequency power amplifier circuit chip | |
| CN210640857U (en) | Switch filtering and amplifying assembly | |
| CN104035105A (en) | Low noise amplifier and radio frequency system at front end of GNSS system receiver | |
| CN103401509A (en) | Multichannel low noise amplifier | |
| JP2012257030A (en) | Signal switching device | |
| CN203326958U (en) | Multichannel low-noise amplifier | |
| CN103716062A (en) | Radio-frequency circuit integrating low-noise amplifier, power amplifier, and antenna switch | |
| WO2024087849A1 (en) | Radio frequency receiving module and radio frequency chip | |
| CN102790591A (en) | High frequency power amplifier | |
| CN203896313U (en) | Low noise amplifier | |
| CN203896314U (en) | L waveband radio-frequency power amplification module | |
| CN109361409B (en) | Radio frequency system capable of effectively optimizing noise coefficient | |
| CN207424263U (en) | The radio frequency input circuit of GPS modules | |
| CN109067413B (en) | Ultrashort wave channel receiver with high dynamic range | |
| CN207926532U (en) | A kind of ultra-low noise amplifier | |
| CN219980820U (en) | Multichannel radio frequency front end based on LRM framework | |
| CN206294154U (en) | A kind of ADSL stretchers low noise amplification passage | |
| CN203289418U (en) | Radio frequency sampling receiver | |
| CN203301464U (en) | Receiver front-end filter for improving rejection ratio index of image frequency and intermediate frequency | |
| CN213585755U (en) | Broadband miniaturized receiver front end | |
| CN205545166U (en) | Inside power amplifier of intelligence LTE cell -phone | |
| CN203554396U (en) | Digital synthesis jammer amplification attenuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140703 |
|
| EXPY | Termination of patent right or utility model |