CN203326956U - C band and Ku band integrated low-noise frequency-reduction amplifier - Google Patents
C band and Ku band integrated low-noise frequency-reduction amplifier Download PDFInfo
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- CN203326956U CN203326956U CN201220735278XU CN201220735278U CN203326956U CN 203326956 U CN203326956 U CN 203326956U CN 201220735278X U CN201220735278X U CN 201220735278XU CN 201220735278 U CN201220735278 U CN 201220735278U CN 203326956 U CN203326956 U CN 203326956U
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Abstract
The utility model belongs to the technical field of microwave communication, in particular to a C band and Ku band integrated low-noise frequency-reduction amplifier applied to the field of satellite communications. The C band and Ku band integrated low-noise frequency-reduction amplifier comprises a C band circuit module, a Ku band circuit module and a radiofrequency signal switching circuit, wherein the radiofrequency signal switching circuit, the C band circuit module and the Ku band circuit module can input radiofrequency signals in a switchable manner; the C band circuit module and the Ku band circuit module are connected to the input end of the radiofrequency signal switching circuit. According to the C band and Ku band integrated low-noise frequency-reduction amplifier, a C band and Ku band integrated waveguide tube is adopted, and the waveguide tubes of the C band and the Ku band are combined together perfectly, so that the frequency-reduction amplifier capable of receiving C band and Ku band microwave signals is achieved, the function and application range of the frequency-reduction amplifier of satellite televisions are improved, and the receivers of multiple televisions can use a set of satellite television antenna.
Description
[technical field]
The utility model belongs to the short-wave communication tedhnology field, relates in particular to a kind of C-band and the integrated low noise frequency reducing of Ku wave band amplifier that is applied to satellite communication field.
[background technology]
In recent years, flourish and scientific and technological fast-developing along with satellite television, various countries are in the application in satellite television field, from traditional independent use C-band or use separately the Ku wave band, develop into C-band and use together with the Ku wave band; But up to the present, TV frequency reducing amplifier on market is all only to have C-band or Ku wave band simple function, if the user need to receive the TV signal of these two kinds of wave bands, C-band frequency reducing amplifier and Ku wave band frequency reducing amplifier must be installed simultaneously, line construction more complicated like this, the installation and maintenance trouble, inconvenient, the time is long, and configure two TV frequency reducing amplifiers simultaneously, the material used is also relatively many, causes installing with maintenance cost is relative also higher in the future.
[utility model content]
In order to solve the above-mentioned technical problem existed in prior art, the utility model provides a kind of C-band and integrated waveguide of Ku wave band of having adopted, and ideally combine, realized that a frequency reducing amplifier can receive C-band microwave signal and Ku band microwave signal, reaching a set of satellite tv antenna can use by many television receivers, and can watch C-band satellite programming and Ku band satellite program simultaneously, and it is simple that circuit is installed, the save space material saving, installation and maintenance is easy, convenient, the C-band that expense is low and the integrated low noise frequency reducing of Ku wave band amplifier.
The technical scheme that the utility model solution prior art problem adopts is:
A kind of C-band and the integrated low noise frequency reducing of Ku wave band amplifier, include C-band circuit module, Ku band circuit module and radiofrequency signal commutation circuit, described radiofrequency signal commutation circuit, the changeable input radio frequency signal ground of described C-band circuit module and Ku band circuit module is connected to the input of described radiofrequency signal commutation circuit.
Further, described C-band circuit module is mainly by the first horizontally-polarized antenna, the first vertical polarized antenna, the first amplifier, the second amplifier, the first combiner circuit, the 3rd amplifier, the first mixer, the first intermediate frequency amplifier and the first oscillator form, described the first combiner circuit, the 3rd amplifier, the first mixer is connected with the first intermediate frequency amplifier conducting successively, and the output of described the first intermediate frequency amplifier is connected with the input conducting of described radiofrequency signal commutation circuit, the output of described the first amplifier and the second amplifier all is connected with the input conducting of described the first combiner circuit, its input is connected with the second vertical polarized antenna with described the first horizontally-polarized antenna respectively, described the first oscillator is connected with described the first mixer conducting.
Further, described Ku band circuit module is mainly by the second horizontally-polarized antenna, the second vertical polarized antenna, the 4th amplifier, the 5th amplifier, the second combiner circuit, the 6th amplifier and integrated circuit form, described the second combiner circuit, the 6th amplifier is connected with integrated circuit conducting successively, and the output of described integrated circuit is connected with the input conducting of described radiofrequency signal commutation circuit, the output of described the 4th amplifier and the 5th amplifier all is connected with the input conducting of described the second combiner circuit, its input is connected with the second vertical polarized antenna with described the second horizontally-polarized antenna respectively.
Further, described integrated circuit mainly is comprised of the second oscillator, the second mixer and the second intermediate frequency amplifier that are connected successively, and the second oscillator includes voltage controlled oscillator, phase-locked loop.
Further, described the first amplifier, the second amplifier, the 4th amplifier and the 5th amplifier are the microwave field effect electric crystal, described the first combiner circuit and the second combiner circuit are power splitter, described the 3rd amplifier and the 6th amplifier are effect electric crystal amplifiers, and described radiofrequency signal commutation circuit is radio frequency matrix commutation circuit.
Further, described C-band circuit module and Ku band circuit module all adopt the microwave waveguide tubular construction, and the microwave plumbing of described Ku band circuit module is fixed on the tube wall outside of the microwave plumbing of described C-band circuit module, are integrally connected.
Further, 3/4ths of the wavelength that the diameter of the microwave plumbing of described C-band circuit module is certain frequency in C-band, the twice that length is the wavelength of certain frequency in C-band, 3/4ths of the wavelength that the diameter of the microwave plumbing of described Ku band circuit module is certain frequency in the Ku wave band, the twice that length is the wavelength of certain frequency in the Ku wave band.
Further, / 4th of a wavelength that the distance of the microwave waveguide tube wall of the described C-band circuit module of described the first horizontally-polarized antenna distance is certain frequency in C-band, / 2nd of a wavelength that the distance of the microwave waveguide tube wall of the described C-band circuit module of described the first vertical polarized antenna distance is certain frequency in C-band, and the vertical signal of described C-band circuit module reflects 1/4th of wavelength that excellent length is certain frequency in C-band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of the described C-band circuit module of its distance is certain frequency in C-band,
/ 2nd of a wavelength that the distance of the microwave waveguide tube wall of the described Ku band circuit module of described the second horizontally-polarized antenna distance is certain frequency in the Ku wave band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of the described Ku band circuit module of described the second vertical polarized antenna distance is certain frequency in the Ku wave band, and the horizontal signal of described Ku band circuit module reflects 3/4ths of wavelength that excellent length is certain frequency in the Ku wave band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of the described Ku band circuit module of its distance is certain frequency in the Ku wave band.
Further, described the first horizontally-polarized antenna and described the second vertical polarized antenna are parallel to each other, described the first vertical polarized antenna and described the second horizontally-polarized antenna are parallel to each other, and the vertical signal reflection rod of described C-band circuit module is parallel to each other with the horizontal signal reflection rod of described Ku band circuit module.
Further, the central point of the microwave plumbing of described C-band circuit module offers a circular holes, 3/4ths of the wavelength that its diameter is certain frequency in the Ku wave band, described the second horizontally-polarized antenna is connected with the microwave plumbing of described C-band circuit module (1) through described circular holes with the second vertical polarized antenna, carries out the transmission of Ku band signal.
The beneficial effects of the utility model:
The utility model passes through technique scheme, adopt C-band and the integrated waveguide of Ku wave band, and ideally combine, realized that a frequency reducing amplifier can receive C-band microwave signal and Ku band microwave signal, improve greatly the function and application scope of satellite television frequency reducing amplifying frequency demultiplier, reaching a set of satellite tv antenna can use by many television receivers, and can watch C-band satellite programming and Ku band satellite program simultaneously, and only need be equipped with this frequency reducing amplifier while installing and get final product, without be equipped with two kinds of frequency reducing amplifiers as traditional structure, circuit is simple, can save space, save material, installation and maintenance is easy, convenient, expense is low.
[accompanying drawing explanation]
Fig. 1 is the structural representation of C-band described in the utility model and the integrated low noise frequency reducing of Ku wave band amplifier embodiment;
Fig. 2 is the structural representation block diagram of integrated circuit in C-band described in the utility model and the integrated low noise frequency reducing of Ku wave band amplifier embodiment.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figures 1 and 2:
The utility model provides a kind of C-band and the integrated low noise frequency reducing of Ku wave band amplifier, include C-band circuit module 1, Ku band circuit module 2 and radiofrequency signal commutation circuit 3, described radiofrequency signal commutation circuit 3, described C-band circuit module 1 and the changeable input radio frequency signal ground of Ku band circuit module 2 are connected to the input of radiofrequency signal commutation circuit 3.Concrete structure can be: described C-band circuit module 1 and Ku band circuit module 2 all adopt the microwave waveguide tubular construction, and the microwave plumbing of Ku band circuit module 2 is fixed on the tube wall outside of the microwave plumbing of C-band circuit module 1, are integrally connected; 3/4ths of the wavelength that the diameter of the microwave plumbing of described C-band circuit module 1 is certain frequency in C-band (3.6GHz) (83.5mm), the twice that length is the wavelength of certain frequency in C-band, 3/4ths of the wavelength (25.6mm) that the diameter of the microwave plumbing of described Ku band circuit module 2 is certain frequency in the Ku wave band (11.7GHz), the twice that length is the wavelength of certain frequency in the Ku wave band.Wherein, described C-band circuit module 1 is mainly by the first horizontally-polarized antenna 11, the first vertical polarized antenna 12, the first amplifier 13, the second amplifier 14, the first combiner circuit 15, the 3rd amplifier 16, the first mixer 17, the first intermediate frequency amplifier 18 and the first oscillator 19 form, described the first combiner circuit 15, the 3rd amplifier 16, the first mixer 17 is connected with the first intermediate frequency amplifier 18 conducting successively, and the output of the first intermediate frequency amplifier 18 is connected with the input conducting of radiofrequency signal commutation circuit 3, the output of described the first amplifier 13 and the second amplifier 14 all is connected with the input conducting of the first combiner circuit 15, its input is connected with the second vertical polarized antenna 12 with the first horizontally-polarized antenna 11 respectively, described the first oscillator 19 is connected with described the first mixer 17 conductings.2 of described Ku band circuit modules are mainly by the second horizontally-polarized antenna 21, the second vertical polarized antenna 22, the 4th amplifier 23, the 5th amplifier 24, the second combiner circuit 25, the 6th amplifier 26 and integrated circuit 27 form, described the second combiner circuit 25, the 6th amplifier 26 is connected with integrated circuit 27 conducting successively, and the output of integrated circuit 27 is connected with the input conducting of radiofrequency signal commutation circuit 3, the output of described the 4th amplifier 23 and the 5th amplifier 24 all is connected with the input conducting of the second combiner circuit 25, its input is connected with the second vertical polarized antenna 22 with the second horizontally-polarized antenna 21 respectively, described integrated circuit 27 is mainly by the second oscillator 271 be connected successively, the second mixer 272 and the second intermediate frequency amplifier 273 form, and the second oscillator 271 includes voltage controlled oscillator, phase-locked loop.And, the central point of the microwave plumbing of described C-band circuit module 1 offers a circular holes, 3/4ths of the wavelength that its diameter is certain frequency in the Ku wave band, described the second horizontally-polarized antenna 21 is connected with the microwave plumbing of described C-band circuit module 1 through described circular holes with the second vertical polarized antenna 22, carries out the transmission of Ku band signal; Described the first amplifier 13, the second amplifier 14, the 4th amplifier 23 and the 5th amplifier 24 are the microwave field effect electric crystal, mainly be respectively used to reduce the noise in the microwave signal (horizontal signal and vertical signal) transmitted by horizontally-polarized antenna 1 and vertical polarized antenna 2, then microwave signal is amplified, and sent to the 3rd amplifier 15 or the 6th amplifier 25; Described the first combiner circuit 15 and the second combiner circuit 25 are power splitter, are mainly used in horizontal signal transmission line and the synthetic single microwave signal transmission line of vertical signal transmission line; Described the 3rd amplifier 16 and the 6th amplifier 26 are effect electric crystal amplifiers, are mainly used in microwave signal is amplified, and are transferred to radiofrequency signal commutation circuit 3; Described radiofrequency signal commutation circuit 3 is radio frequency matrix commutation circuits.
In addition, / 4th of a wavelength that the distance of the microwave waveguide tube wall of described the first horizontally-polarized antenna 11 distance C band circuit modules 1 is certain frequency in C-band, / 2nd of a wavelength that the distance of the microwave waveguide tube wall of described the first vertical polarized antenna 12 distance C band circuit modules 1 is certain frequency in C-band, and the vertical signal of C-band circuit module 1 reflects 1/4th of wavelength that excellent length is certain frequency in C-band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of its distance C band circuit module 1 is certain frequency in C-band, / 2nd of a wavelength that described the second horizontally-polarized antenna 21 is certain frequency in the Ku wave band apart from the distance of the microwave waveguide tube wall of Ku band circuit module 2, / 4th of a wavelength that described the second vertical polarized antenna 22 is certain frequency in the Ku wave band apart from the distance of the microwave waveguide tube wall of Ku band circuit module 2, and the horizontal signal of Ku band circuit module 2 reflects 3/4ths of wavelength that excellent length is certain frequency in the Ku wave band, / 4th of a wavelength that the distance of its microwave waveguide tube wall apart from Ku band circuit module 2 is certain frequency in the Ku wave band, described the first horizontally-polarized antenna 11 and the second vertical polarized antenna 22 are parallel to each other, described the first vertical polarized antenna 12 and the second horizontally-polarized antenna 21 are parallel to each other, the vertical signal reflection rod of described C-band circuit module 1 is parallel to each other with the horizontal signal reflection rod of Ku band circuit module 2, to reach the effect that signal strength signal intensity is the strongest.
The operation principle of C-band described in the utility model and the integrated low noise frequency reducing of Ku wave band amplifier is specially:
When the first horizontally-polarized antenna 11 and the first vertical polarized antenna 12 receive the descending C-band microwave signal of satellite television (C-band horizontal signal and C-band vertical signal), at first enter the microwave plumbing collection ripple of C-band circuit module 1 through this first horizontally-polarized antenna 11 and vertical polarized antenna 12, and be transferred to respectively the first amplifier 13 and the second amplifier 14 and carry out noise reduction, amplify and process, and transfer out to the first combiner circuit 15; Then the first combiner circuit 15 will be through noise reduction, amplify to process after the C-band microwave signal be synthesized, and be transferred to the 3rd amplifier 16 and again amplify, be transferred to the first mixer 17; The frequency of following again the C-band microwave signal after the first mixer 17 will again amplify under the acting in conjunction of the first oscillator 19 is down to the reception signal frequency range of satellite motor receiver, and be transferred to the first intermediate frequency amplifier 18 and carry out the intermediate frequency amplification, be transferred to radiofrequency signal commutation circuit 3; Finally, radiofrequency signal commutation circuit 3 is carried out the signal circuit switching controls after receiving this C-band microwave signal of amplifying through intermediate frequency, and exports to television set, is shown.
When the second horizontally-polarized antenna 21 and the second vertical polarized antenna 22 receive the descending Ku band microwave signal of satellite television (Ku wave band horizontal signal and Ku wave band vertical signal), at first through this second horizontally-polarized antenna 21 and vertical polarized antenna 22 and enter the microwave plumbing collection ripple of Ku band circuit module 2 after the microwave plumbing of C-band circuit module 1, and be transferred to respectively the 4th amplifier 23 and the 5th amplifier 24 and carry out noise reduction, amplify and process, and transfer out to the second combiner circuit 25; Then the second combiner circuit 25 will be through noise reduction, amplify to process after Ku band microwave signal be synthesized, and be transferred to the 6th amplifier 26 and again amplify, be transferred to integrated circuit 27; Then the oscillator 271 (being voltage controlled oscillator and phase-locked loop) in integrated circuit 27 produces local oscillated signal and is transferred in the lump the second mixer 272 with Ku band microwave signal and is mixed again, and mixed signal is reduced to after intermediate-freuqncy signal and is sent to the second intermediate frequency signal amplifier 273 and carries out the intermediate frequency amplification, be transferred to radiofrequency signal commutation circuit 3; Finally, radiofrequency signal commutation circuit 3 is carried out the signal circuit switching controls after receiving this C band microwave signal amplified through intermediate frequency, and exports to television set, is shown.
Like this, low noise frequency reducing amplifier described in the utility model has adopted C-band and the integrated waveguide of Ku wave band, and ideally combine, realized that a frequency reducing amplifier can receive C-band microwave signal and Ku band microwave signal, improve greatly the function and application scope of satellite television frequency reducing amplifying frequency demultiplier, reaching a set of satellite tv antenna can use by many television receivers, and can watch C-band satellite programming and Ku band satellite program simultaneously, and only need be equipped with this frequency reducing amplifier while installing and get final product, without be equipped with two kinds of frequency reducing amplifiers as traditional structure, circuit is simple, can save space, save material, installation and maintenance is easy, convenient, expense is low.
Above content is in conjunction with concrete optimal technical scheme further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (10)
1. a C-band and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: include C-band circuit module (1), Ku band circuit module (2) and radiofrequency signal commutation circuit (3), described radiofrequency signal commutation circuit (3), described C-band circuit module (1) and the changeable input radio frequency signal ground of Ku band circuit module (2) are connected to the input of described radiofrequency signal commutation circuit (3).
2. C-band according to claim 1 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: described C-band circuit module (1) is mainly by the first horizontally-polarized antenna (11), the first vertical polarized antenna (12), the first amplifier (13), the second amplifier (14), the first combiner circuit (15), the 3rd amplifier (16), the first mixer (17), the first intermediate frequency amplifier (18) and the first oscillator (19) form, described the first combiner circuit (15), the 3rd amplifier (16), the first mixer (17) is connected with the first intermediate frequency amplifier (18) conducting successively, and the output of described the first intermediate frequency amplifier (18) is connected with the input conducting of described radiofrequency signal commutation circuit (3), the output of described the first amplifier (13) and the second amplifier (14) all is connected with the input conducting of described the first combiner circuit (15), its input is connected with the second vertical polarized antenna (12) with described the first horizontally-polarized antenna (11) respectively, described the first oscillator (19) is connected with described the first mixer (17) conducting.
3. C-band according to claim 2 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: described Ku band circuit module (2) is mainly by the second horizontally-polarized antenna (21), the second vertical polarized antenna (22), the 4th amplifier (23), the 5th amplifier (24), the second combiner circuit (25), the 6th amplifier (26) and integrated circuit (27) form, described the second combiner circuit (25), the 6th amplifier (26) is connected with integrated circuit (27) conducting successively, and the output of described integrated circuit (27) is connected with the input conducting of described radiofrequency signal commutation circuit (3), the output of described the 4th amplifier (23) and the 5th amplifier (24) all is connected with the input conducting of described the second combiner circuit (25), its input is connected with the second vertical polarized antenna (22) with described the second horizontally-polarized antenna (21) respectively.
4. C-band according to claim 3 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: described integrated circuit (27) mainly is comprised of the second oscillator (271), the second mixer (272) and the second intermediate frequency amplifier (273) that are connected successively, and the second oscillator (271) includes voltage controlled oscillator, phase-locked loop.
5. according to any one described C-band in claim 2 to 4 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: described the first amplifier (13), the second amplifier (14), the 4th amplifier (23) and the 5th amplifier (24) are the microwave field effect electric crystal, described the first combiner circuit (15) and the second combiner circuit (25) are power splitter, described the 3rd amplifier (16) and the 6th amplifier (26) are effect electric crystal amplifiers, and described radiofrequency signal commutation circuit (3) is radio frequency matrix commutation circuit.
6. according to any one described C-band in claim 3 to 4 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: described C-band circuit module (1) and Ku band circuit module (2) all adopt the microwave waveguide tubular construction, and the microwave plumbing of described Ku band circuit module (2) is fixed on the tube wall outside of the microwave plumbing of described C-band circuit module (1), is integrally connected.
7. C-band according to claim 6 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: 3/4ths of the wavelength that the diameter of the microwave plumbing of described C-band circuit module (1) is certain frequency in C-band, the twice that length is the wavelength of certain frequency in C-band, 3/4ths of the wavelength that the diameter of the microwave plumbing of described Ku band circuit module (2) is certain frequency in the Ku wave band, the twice that length is the wavelength of certain frequency in the Ku wave band.
8. C-band according to claim 7 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: 1/4th of the wavelength that the distance of the microwave waveguide tube wall of described the first horizontally-polarized antenna (11) described C-band circuit module of distance (1) is certain frequency in C-band, / 2nd of a wavelength that the distance of the microwave waveguide tube wall of described the first vertical polarized antenna (12) described C-band circuit module of distance (1) is certain frequency in C-band, and the vertical signal of described C-band circuit module (1) reflects 1/4th of wavelength that excellent length is certain frequency in C-band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of its described C-band circuit module of distance (1) is certain frequency in C-band,
/ 2nd of a wavelength that the distance of the microwave waveguide tube wall of described the second horizontally-polarized antenna (21) described Ku band circuit module of distance (2) is certain frequency in the Ku wave band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of described the second vertical polarized antenna (22) described Ku band circuit module of distance (2) is certain frequency in the Ku wave band, and the horizontal signal of described Ku band circuit module (2) reflects 3/4ths of wavelength that excellent length is certain frequency in the Ku wave band, / 4th of a wavelength that the distance of the microwave waveguide tube wall of its described Ku band circuit module of distance (2) is certain frequency in the Ku wave band.
9. C-band according to claim 8 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: described the first horizontally-polarized antenna (11) is parallel to each other with described the second vertical polarized antenna (22), described the first vertical polarized antenna (12) is parallel to each other with described the second horizontally-polarized antenna (21), and the vertical signal reflection rod of described C-band circuit module (1) is parallel to each other with the horizontal signal reflection rod of described Ku band circuit module (2).
10. C-band according to claim 9 and the integrated low noise frequency reducing of Ku wave band amplifier, it is characterized in that: the central point of the microwave plumbing of described C-band circuit module (1) offers a circular holes, 3/4ths of the wavelength that its diameter is certain frequency in the Ku wave band, described the second horizontally-polarized antenna (21) is connected with the microwave plumbing of described C-band circuit module (1) through described circular holes with the second vertical polarized antenna (22), carries out the transmission of Ku band signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220735278XU CN203326956U (en) | 2012-12-27 | 2012-12-27 | C band and Ku band integrated low-noise frequency-reduction amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220735278XU CN203326956U (en) | 2012-12-27 | 2012-12-27 | C band and Ku band integrated low-noise frequency-reduction amplifier |
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| Publication Number | Publication Date |
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| CN203326956U true CN203326956U (en) | 2013-12-04 |
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| CN201220735278XU Expired - Fee Related CN203326956U (en) | 2012-12-27 | 2012-12-27 | C band and Ku band integrated low-noise frequency-reduction amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786177A (en) * | 2017-11-03 | 2018-03-09 | 浙江嘉科电子有限公司 | A kind of low-noise amplifier of C-band |
-
2012
- 2012-12-27 CN CN201220735278XU patent/CN203326956U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786177A (en) * | 2017-11-03 | 2018-03-09 | 浙江嘉科电子有限公司 | A kind of low-noise amplifier of C-band |
| CN107786177B (en) * | 2017-11-03 | 2023-11-24 | 浙江嘉科电子有限公司 | C-band low-noise amplifier |
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Granted publication date: 20131204 Termination date: 20151227 |
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| EXPY | Termination of patent right or utility model |