CN201286082Y - Wideband radio frequency amplifier with three function - Google Patents
Wideband radio frequency amplifier with three function Download PDFInfo
- Publication number
- CN201286082Y CN201286082Y CNU2008201859262U CN200820185926U CN201286082Y CN 201286082 Y CN201286082 Y CN 201286082Y CN U2008201859262 U CNU2008201859262 U CN U2008201859262U CN 200820185926 U CN200820185926 U CN 200820185926U CN 201286082 Y CN201286082 Y CN 201286082Y
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- frequency relay
- high frequency
- relay
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- frequency
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Abstract
The utility model relates to a three-functional wideband radio-frequency amplifier, which is characterized in that the three-functional wideband radio-frequency amplifier is composed of a first high-frequency relay A, a second high-frequency relay B, an amplifying circuit, an attenuation circuit and a power supply, wherein the first high-frequency relay A is connected with the second high-frequency relay B in series, the amplifying circuit is connected with the first high-frequency relay A in parallel, the attenuation circuit is connected with the second high-frequency relay B in parallel, the power supply is respectively connected with the power input terminals of the first high-frequency relay A and the second high-frequency relay B, and an input signal is connected with the signal input terminal of the first high-frequency relay A. The utility model has the advantages that the width of the working band is 20 to 3, 000MHz, the utility model has three functions of amplifying, direct connection and attenuation, the noise is low, the dynamic range is wide, the amplifier gain is high, the utility model is suitable for the requirement of oversize variation range of the signal-receiving, the dynamic range of the receiving system is enlarged, and the reliability of system is improved. The amplifier gain can reach to 16dB, the noise figure is 3dB, the dynamic range is 60dB, and the stationary wave (VSWR) is less than 1.5 to 2.0.
Description
Technical field
The utility model relates to a kind of three function wideband radio frequency amplifiers that are used for direction finding, monitoring, receiving system, belong to the wideband radio frequency amplifier technical field.
Background technology
Radio frequency amplifier of the prior art, function ratio is more single usually, dynamic range is little, gain amplifier is on the low side etc.In actual applications, only can amplify signal, regular meeting causes channel obstruction, blasting, and is all the more so when running into strong signal.So need a kind of amplifier of amplification, decay and straight-through three functions of taking into account of development to satisfy the demands.
Summary of the invention
The wideband radio frequency amplifier that proposition of the present utility model is a kind of to have amplification, straight-through, three kinds of functions of decay, purpose is to overcome above-mentioned existing in prior technology defective.
Technical solution of the present utility model: it is characterized in that forming by the first high frequency relay A, the second high frequency relay B, amplifying circuit, attenuator circuit and power supply, wherein the first high frequency relay A is connected in series with the second high frequency relay B, the amplifying circuit and the first high frequency relay A also connect, the attenuator circuit and the second high frequency relay B also connect, power supply connects the power input of the first high frequency relay A, the second high frequency relay B respectively, and input signal connects the signal input part of the first high frequency relay A.
Advantage of the present utility model: working band is wide, is 20MHz～3000MHz, has amplification, straight-through, three kinds of functions of decay, and noise is low, wide dynamic range, gain amplifier height; In use can automatically switch, can adapt to the excessive needs of received signal excursion, thereby enlarge the dynamic range of receiving system, further improve the reliability of system according to actual needs by software set.This amplifier gain can be up to 16dB, noise factor 3dB, dynamic range 60dB, standing wave (VSWR)≤1.5～2.0.
Description of drawings
Accompanying drawing 1 is the electric theory diagram of three function wideband radio frequency amplifiers
Embodiment
Contrast accompanying drawing 1, its structure is made up of the first high frequency relay A, the second high frequency relay B, amplifying circuit, attenuator circuit and power supply, wherein the first high frequency relay A is connected in series with the second high frequency relay B, the amplifying circuit and the first high frequency relay A also connect, and the attenuator circuit and the second high frequency relay B also connect.It has 1 control/feeder ear, 1 input, 1 output, and+12V power supply is added to respectively on first high frequency relay and second high frequency relay by software control.Its operating frequency is 20MHz～3000MHz, in use according to actual needs by software set, automaticallyes switch, and can adapt to the excessive needs of received signal excursion, thereby enlarge the dynamic range of receiving system, further improves the reliability of system.This amplifier gain can be up to 16dB, noise factor 3dB, dynamic range 60dB, standing wave (VSWR)≤1.5～2.0.
Described amplifying circuit is an amplifier tube in fact, and its model is ERA-51.
Described attenuator circuit, the Π type resistance attenuator of forming by three resistance.
Described high frequency relay, model are RF303-12.
Its operation principle is: when first high frequency relay powers up, and second high frequency relay is not when powering up, and input signal obtains linear amplification behind amplifying circuit, again through the straight-through part output of second high frequency relay.Be " amplification ".When first high frequency relay does not power up, and second high frequency relay is when powering up, and input signal arrives the attenuator circuit of second high frequency relay after the straight-through part of first high frequency relay, output after decaying.Be " decay ".When first high frequency relay and second high frequency relay did not power up, input signal was through the straight-through part output of first high frequency relay and second high frequency relay.Be " leading directly to ".So this amplifier has " lead directly to, amplify, decay " three functions.
Claims (1)
1, three function wideband radio frequency amplifiers, it is characterized in that forming by the first high frequency relay A, the second high frequency relay B, amplifying circuit, attenuator circuit and power supply, wherein the first high frequency relay A is connected in series with the second high frequency relay B, the amplifying circuit and the first high frequency relay A also connect, the attenuator circuit and the second high frequency relay B also connect, power supply connects the power input of the first high frequency relay A, the second high frequency relay B respectively, and input signal connects the signal input part of the first high frequency relay A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201859262U CN201286082Y (en) | 2008-09-10 | 2008-09-10 | Wideband radio frequency amplifier with three function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201859262U CN201286082Y (en) | 2008-09-10 | 2008-09-10 | Wideband radio frequency amplifier with three function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201286082Y true CN201286082Y (en) | 2009-08-05 |
Family
ID=40951049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201859262U Expired - Fee Related CN201286082Y (en) | 2008-09-10 | 2008-09-10 | Wideband radio frequency amplifier with three function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201286082Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109257119A (en) * | 2018-11-09 | 2019-01-22 | 成都九华圆通科技发展有限公司 | A kind of radio monitoring antenna system suitable for different radio frequency signal frequency range |
| CN110635815A (en) * | 2019-09-09 | 2019-12-31 | 云南康木信科技有限责任公司 | Circuit for automatic attenuation control of front-stage radio frequency input end of medium-short wave receiver |
-
2008
- 2008-09-10 CN CNU2008201859262U patent/CN201286082Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109257119A (en) * | 2018-11-09 | 2019-01-22 | 成都九华圆通科技发展有限公司 | A kind of radio monitoring antenna system suitable for different radio frequency signal frequency range |
| CN109257119B (en) * | 2018-11-09 | 2024-02-27 | 成都九华圆通科技发展有限公司 | Radio monitoring antenna system suitable for different radio frequency signal frequency bands |
| CN110635815A (en) * | 2019-09-09 | 2019-12-31 | 云南康木信科技有限责任公司 | Circuit for automatic attenuation control of front-stage radio frequency input end of medium-short wave receiver |
| CN110635815B (en) * | 2019-09-09 | 2021-07-30 | 云南康木信科技有限责任公司 | Circuit for automatic attenuation control of front-stage radio frequency input end of medium-short wave receiver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Developing Electronic System Co., Ltd. Assignor: Yu Weiquan Contract record no.: 2011320000167 Denomination of utility model: Wideband radio frequency amplifier with three function Granted publication date: 20090805 License type: Exclusive License Record date: 20110307 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20130910 |