CN201360241Y - Aeronautical data link 600W broadband linear power amplifier - Google Patents
Aeronautical data link 600W broadband linear power amplifier Download PDFInfo
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- CN201360241Y CN201360241Y CNU2009200887414U CN200920088741U CN201360241Y CN 201360241 Y CN201360241 Y CN 201360241Y CN U2009200887414 U CNU2009200887414 U CN U2009200887414U CN 200920088741 U CN200920088741 U CN 200920088741U CN 201360241 Y CN201360241 Y CN 201360241Y
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Abstract
The utility model discloses an aeronautical data link 600W broadband linear power amplifier which comprises an adaptive logic circuit( ALC) and a modulation circuit; the input ends of the ALC and the modulation circuit are connected with radio frequency modulated signals and the output ends thereof are connected with a prime pre-amplifying circuit which is connected with a gross power distributor; the prime pre-amplifying circuit comprises at least two stages of amplifying circuits which are connected sequentially and finally are connected with the gross power distributor; each amplifying circuit is connected with a working point setting circuit I thereof; the gross power distributor is connected with at least two final amplifying circuits which are all provided with working point setting circuits; and all the final amplifying circuits are connected with a gross power combiner. By adopting the advanced transmission line transformer technology in the power combiner and the distributor, the aeronautical data link 600W broadband linear power amplifier has the advantages of small volume and big power, with unevenness of 0.1dB and isolation of 25dB-30Db.
Description
Technical field
The utility model relates to a kind of power amplifier, specifically relates to a kind of aeronautical data chain large-power broadband linear power amplifier.
Background technology
China aviation air command communication system all is analog signal communication all the time.Though used digital circuit technique, can not transmit data chainning.No matter be that amplitude modulation AM, modulating FM, single-side band modulation SSB are analog communications, its power amplifier all is a nonlinear power amplifier.Domestic some producer and research institute are also developing linear power amplifier, but also are only limited to 10～150W, do not have continuous power 300W, the linear power amplifier of peak power 600W.
Summary of the invention
The purpose of this utility model provides a kind of linear power amplifier that can be operated in 100-400MHz, continuous power 300W, peak power 600W.
For achieving the above object, the utility model is by the following technical solutions:
The utility model comprises ALC and modulation circuit, the input of ALC and modulation circuit connects the radio frequency modulated signal, its output is connected with the pre-amplifying circuit of prime, the pre-amplifying circuit of prime is connected with the gross power distributor, the pre-amplifying circuit of above-mentioned prime comprises two-stage amplifying circuit at least, amplifying circuit connects successively, finally be connected with the gross power distributor, and each amplifying circuit all is provided with circuit I with the working point of this circuit and is connected; Above-mentioned gross power distributor is connected with at least two final stage amplifying circuits, and the final stage amplifying circuit all disposes the working point circuit is set; Above-mentioned final stage amplifying circuit all is connected with the gross power synthesizer.
Above-mentioned radio frequency modulated signal is a ultra-high frequency signal, the pre-amplifying circuit of prime comprises three-stage amplifier, the output of first order amplifying circuit is connected with the input of second level amplifying circuit, the output of second level amplifying circuit is connected with the input of third level amplifying circuit, the output of third level amplifying circuit is connected with the gross power distributor, and the output of gross power distributor connects power divider I and power divider II respectively; The output of above-mentioned power divider I connects final stage amplifying circuit I and final stage amplifying circuit II respectively, and the output of final stage amplifying circuit I and final stage amplifying circuit II all is connected to power combiner I; The output of above-mentioned power divider II connects final stage amplifying circuit III and final stage amplifying circuit IV respectively, and the output of final stage amplifying circuit III and final stage amplifying circuit IV all is connected to power combiner II; Above-mentioned power combiner I and power combiner II all are connected to the gross power synthesizer.
Above-mentioned radio frequency modulated signal is the very high frequency(VHF) signal, the pre-amplifying circuit of prime comprises the two-stage amplifying circuit, the output of first order amplifying circuit is connected with the input of second level amplifying circuit, the output of second level amplifying circuit is connected with the gross power distributor, the output of gross power distributor connects final stage amplifying circuit V and final stage amplifying circuit VI respectively, and above-mentioned final stage amplifying circuit V and final stage amplifying circuit VI all are connected to the gross power synthesizer.
In pre-amplifying circuit of prime and final stage amplifying circuit, all adopt frequency microwave TMOS or LDMOS field effect transistor as power amplifier.
Above-mentioned ALC and modulation circuit are any one in ALC and amplitude modulation modulation circuit or ALC and fm modulation circuit or ALC and the digital modulation circuit.
Above-mentioned ALC and modulation circuit are connected with ALC control potential circuit.
The working point that the working point of the pre-amplifying circuit of above-mentioned prime is provided with circuit I and final stage amplifying circuit is provided with circuit and all is connected with PTT PTT control circuit.
Above-mentioned gross power distributor and gross power synthesizer are respectively the high-power distributor of Wilkinson, the high-power synthesizer of Wilkinson.
Adopt the utility model of technique scheme, owing to adopted advanced line transformer technology as power combiner and distributor, it is little to have a volume, high-power advantage, and unevenness is 0.1dB, isolation reaches 25dB～30dB.The novel super high power Wilkinson of a kind of 600W power division, synthesizer have been designed in output stage and penultimate stage, adopted novel more high-power RF microwave TMOS or LDMOS field effect transistor as power amplifier, it has, and power output is big, good linearity, working stability, advantage such as reliable.Especially in the final stage amplifying circuit, adopt the high-frequency high-power pipe of Gemini encapsulation, can be easy to be designed to push-pull circuit, can effectively suppress even-order harmonic, improve Electro Magnetic Compatibility.In addition, the utility model has adopted transmission, the match circuit of microstrip circuit designing technique as power amplifier.To sum up, the utility model has been filled up the blank of domestic 100MHZ～400MHZ aeronautical data chain 600W Linear Great Power amplifier, in electronic countermeasures battle, can effectively improve the antijamming capability of my army's communication, under the situation of electromagnetic environment more complicated, can effectively improve my Corps Communications command ability, be the key modules of military anti-interference data communication.It not only is in domestic lead in the development of science and technology level, and has very strong vitality, good market prospects.
Description of drawings
Fig. 1 is the hyperfrequency UHF theory diagram of embodiment 1 in the utility model;
Fig. 2 is hyperfrequency UHF input and the pre-amplifier section circuit diagram of prime among the utility model embodiment 1;
Fig. 3 is the circuit diagram of hyperfrequency UHF power division among the utility model embodiment 1, final stage amplification and power composite part;
Fig. 4 is the very high frequency(VHF) VHF theory diagram of embodiment 2 in the utility model;
Fig. 5 is very high frequency(VHF) VHF input and the pre-amplifier section circuit diagram of prime among the utility model embodiment 2;
Fig. 6 is the circuit diagram of very high frequency(VHF) VHF power division among the utility model embodiment 2, final stage amplification and power composite part.
Embodiment
Embodiment 1
As shown in Figure 1, hyperfrequency UHF power amplifier comprises automatic gain level control ALC and modulation circuit.Above-mentioned ALC and modulation circuit are any one in ALC and amplitude modulation modulation circuit or ALC and fm modulation circuit or ALC and the digital modulation circuit, and ALC and modulation circuit also are connected with ALC control potential circuit.In the present embodiment, the input of ALC and modulation circuit connects hyperfrequency UHF modulated signal, and its output is connected with the pre-amplifying circuit of prime.For guaranteeing that the radio frequency modulated signal has enough signal strength signal intensities, the pre-amplifying circuit of prime comprises three-stage amplifier, the output of first order amplifying circuit is connected with the input of second level amplifying circuit, the output of second level amplifying circuit is connected with the input of third level amplifying circuit, the output of third level amplifying circuit is connected with the gross power distributor, and wherein each grade amplifying circuit working point of all disposing this circuit is provided with circuit I.The output of gross power distributor connects power divider I and power divider II respectively, wherein, the output of power divider I connects final stage amplifying circuit I and final stage amplifying circuit II respectively, and the output of final stage amplifying circuit I and final stage amplifying circuit II all is connected to power combiner I; The output of above-mentioned power divider II connects final stage amplifying circuit III and final stage amplifying circuit IV respectively, and the output of final stage amplifying circuit III and final stage amplifying circuit IV all is connected to power combiner II.At last, power combiner I and power combiner II all are connected to the gross power synthesizer.Each final stage amplifying circuit all disposes the working point circuit is set, and the working point that the working point of final stage amplifying circuit is provided with circuit and the pre-amplifying circuit of prime is provided with circuit I and all is connected with PTT PTT control circuit, and this voltage can play the control action of power amplifier emission.In addition, present embodiment, in the second level, third level amplifying circuit and final stage amplifying circuit, all adopt frequency microwave TMOS or LDMOS field effect transistor as power amplifier, and gross power distributor and gross power synthesizer are respectively the high-power distributor of Wilkinson, the high-power synthesizer of Wilkinson.
Specifically, as shown in Figure 2, the operation principle of present embodiment is: deliver to rf inputs XS2 by the radio frequency modulated signal that the radio station is sent here, process is by four diode VD1, VD2 is after VD3, the electrically controlled attenuator that VD4 etc. form handle and control, deliver to and deliver to line transformer T11 after first order amplifier N2 amplifies, line transformer T11 and capacitor C 7, C8, C9, inductance L 1, the input matching circuit that L2 forms, its output connects the input of second level amplifier V2.Resistance R 10, R11, capacitor C 12, C13 is a negative-feedback circuit.Inductance L 3, L4 and capacitor C 13, C14, C15 are the output matching circuits of second level amplifier V2, transformer T12 is the output matching transformer of second level amplifier V2.Third level discharge circuit mainly is made of third level amplifier V3, line transformer T13, T14 forms the input matching circuit of third level amplifier V3 with capacitor C 47, line transformer T15, T16 and capacitor C 48, C49 forms the output matching circuit of third level amplifier V3, capacitor C 50, C51, C52 and transmission transformer T17 finish the output that the third level is amplified together.
As shown in Figure 3, W1, W2 and resistance R 153 formed Wilkinson gross power distributors, and the high frequency power that it exports third level amplifier V3 is sent to the power divider II that the power divider I that is made up of line transformer T101, T102 and two other line transformer are formed respectively.High-frequency signal by power divider I output is delivered to final stage amplifying circuit I and final stage amplifying circuit II again respectively.Final stage amplifying circuit I mainly is made of final amplifier IV22, simultaneously, line transformer T103 is a uneven balancing transformer that changes, and transformer T104, T105 and capacitor C 107 have been formed the input impedance matching circuit of final amplifier IV22, transformer T106, T107 and capacitor C 108, C109 finishes the output impedance coupling of final amplifier IV22 together, and capacitor C 110～C112 and transformer T108, T109 finish the output impedance conversion and the balance of this power amplifier and change unbalanced power output.Final stage amplifying circuit II mainly is made of final amplifier IIV11, line transformer T110 is a uneven balancing transformer that changes, T111, T112 and capacitor C 126 are formed the power input impedance matching circuit of final amplifier IIV11, capacitor C 127, C128 and transformer T113, T114 form the output impedance match circuit of V11, and capacitor C 129～C131 and transformer T115, T116 finish the output impedance conversion and the balance of this power amplifier changes unbalanced power output.The power output of final stage amplifying circuit I and final stage amplifying circuit II finally outputs to Wiliknson gross power synthesizer after synthesizing by power combiner IT117.
The other end by Wiliknson gross power distributor is delivered to power divider II, and then by power divider II power signal is delivered to final stage amplifying circuit III and final stage amplifying circuit IV respectively, this partial circuit identical with as shown in Figure 3.By the gross power synthesizer power power combiner I and the synthetic two paths of signals of power combiner II are synthesized at last again, at last high-frequency signal is transported to the radio station.
As Fig. 2, shown in Figure 3, peripheral auxiliary circuit comprises:
The working point of the pre-amplifying circuit of prime is provided with circuit I: the operating voltage that triode V4 and peripheral resistance capacitance thereof constitute first order amplifier N2 is provided with circuit.The working point that triode V7, V8 and diode VD14～VD18 and peripheral resistance capacitance thereof are formed second level amplifier V2 is provided with circuit, can play effect stable and protection.The working point that triode V9, V10, diode VD21～VD25 and peripheral resistance capacitance thereof constitute third level amplifier V3 is provided with circuit, plays effect stable and protection.
The working point of final stage amplifying circuit is provided with circuit: the working point that triode V101, V102 and diode VD101～VD105 constitutes final amplifier IV22 is provided with circuit.The working point that triode V103, V104 and diode VD106～VD110 forms final amplifier IIV12 is provided with circuit, plays stable and protective effect.Circuit is set in the working point of final amplifier III, IV and final amplifier I, II are identical.Above-mentioned working point is provided with circuit and is technology well known to those of ordinary skill in the art.
ALC control potential circuit and PTT PTT control circuit: ALC control voltage V
ALCProvide by the radio station, be generally 2～7V.The numerical value that changes this voltage can change the attenuation of diode VD1～VD4 electrically controlled attenuator, reaches the purpose of control radio station power output.And V
ALCHaving, not having of voltage is the control voltage of PTT PTT.V is arranged
ALCThe quiescent potential of the operating voltage of amplifier N2 and V2, V3, V11, V12, V21, V22 is added, power amplifier work has power output.No V
ALCDuring voltage, the quiescent potential of the supply voltage of N2 and V2, V3, V11, V12, V21, V22 is zero, and power amplifier is not worked, inactivity output.V is arranged
ALCDuring voltage, the radio station is in emission state, and power amplifier has power output.No V
ALCDuring voltage, the radio station is in accepting state, transmitter is not worked, the output of power amplifier inactivity.This voltage is exactly radio station transmitting-receiving keying voltage.
Need to prove, second level amplifier V2, third level amplifier V3, final amplifier V11, V12, V21, V22 are New-type radio-frequency LDMOS or TMOS field effect transistor, it is newly designed frequency microwave high power device of 21 century, advantages such as it has that power output is big, good linearity, working stability are reliable, they all are high-frequency high-power pipes of Gemini encapsulation, can be easy to be designed to push-pull circuit, can effectively suppress even-order harmonic, improve Electro Magnetic Compatibility.In addition, the 28V power supply that the radio station is supplied with is delivered to power amplifier by feed-through filter, adds and has adopted novel anti EMI material, also can effectively improve the electromagnetic compatibility characteristic of this power amplifier.
Embodiment 2
As shown in Figure 4, very high frequency(VHF) VHF power amplifier comprises automatic gain level control ALC and modulation circuit.Above-mentioned ALC and modulation circuit are any one in ALC and amplitude modulation modulation circuit or ALC and fm modulation circuit or ALC and the digital modulation circuit, and ALC and modulation circuit also are connected with ALC control potential circuit.In the present embodiment, the input of ALC and modulation circuit connects very high frequency(VHF) VHF modulated signal, and its output is connected with the pre-amplifying circuit of prime.For guaranteeing that the radio frequency modulated signal has enough signal strength signal intensities, the pre-amplifying circuit of prime comprises the two-stage amplifying circuit, the output of first order amplifying circuit is connected with the input of second level amplifying circuit, the output of second level amplifying circuit is connected with the gross power distributor, and wherein each grade amplifying circuit working point of all disposing this circuit is provided with circuit I.The output of gross power distributor connects final stage amplifying circuit V and final stage amplifying circuit VI respectively, and above-mentioned final stage amplifying circuit V and final stage amplifying circuit VI all are connected to the gross power synthesizer.Each final stage amplifying circuit all disposes the working point circuit is set, and the working point that the working point of final stage amplifying circuit is provided with circuit and the pre-amplifying circuit of prime is provided with circuit I and all is connected with PTT PTT control circuit, and this voltage can play the control action of power amplifier emission.In addition, present embodiment is in pre-amplifying circuit of prime and final stage amplifying circuit, all adopt frequency microwave TMOS or LDMOS field effect transistor as power amplifier, and gross power distributor and gross power synthesizer are respectively the high-power distributor of Wilkinson, the high-power synthesizer of Wilkinson.
As shown in Figure 5, the operation principle of present embodiment is: deliver to rf inputs XS1 by radio frequency and modulated signal that the radio station is sent here, process is by four diode VD70, VD71, VD72, the electrically controlled attenuator that VD73 etc. form deliver to first order amplifier N1 and amplify after handling and controlling, process is by capacitor C 75, C76, C77, C78, C79 and inductance L 71, deliver to line transformer T1 behind the filter filtering that L72 forms, also deliver to the input of second level amplifier V1, capacitor C 83 and resistance R 100 constitute the negative-feedback circuit of second level amplifier V1, capacitor C 81, C82, C83 and inductance L 73 are input matching circuits of second level amplifier V1, capacitor C 84, C85, C86 and inductance L 74 are its output matching circuits, and transformer T2 is a second level amplifier V1 output line transformer.Transformer T301, T302, T303, T310 line transformer are formed the gross power distributor circuit, and the high-frequency signal of second level amplifier V1 output is divided into two-way, deliver to the input stage of final amplifier V31, V32 respectively, remove to promote final amplifier V31, V32.Transformer T304, T305 finish the input impedance matching of final amplifier V32 with capacitor C 307.Transformer T306, T307 mate with the output impedance that capacitor C 309～C312 finishes final amplifier V32.Transformer T311, T312 finish the input impedance matching of final amplifier V31 with capacitor C 326, and transformer T313, T314 finish the output impedance coupling of final amplifier V31 with capacitor C 328～C310.Transformer T309, T316, T318 form the gross power combiner circuit of this power amplifier, finish the synthetic of final amplifier V31, V32 power output, by XS2 the high frequency power signal conveys of having amplified are gone to the radio station at last.
Its peripheral auxiliary circuits comprises:
The working point of the pre-amplifying circuit of prime is provided with circuit I: triode V71 and peripheral resistance capacitance are that the operating voltage of first order amplifier N1 is provided with circuit.Triode V72, V73 and diode VD83～VD87 and peripheral resistance capacitance are formed prime driving amplifier V1 working point circuit are set, and play steady operation and protective effect.
The working point of final stage amplifying circuit is provided with circuit: triode V301, V302 constitute final amplifier V32 working point with diode VD301～VD305 with relevant resistance capacitance circuit are set, and play stable and protective effect equally.Triode V303, V304 constitute final amplifier V31 working point with diode VD306～VD310 with relevant resistance capacitance circuit are set.Above-mentioned working point is provided with circuit and is technology well known to those of ordinary skill in the art.
ALC control potential circuit and PTT PTT control circuit: ALC control voltage V
ALCProvide by the radio station, be generally 2～7V.The numerical value that changes this voltage can change the attenuation of diode VD70～VD73 electrically controlled attenuator, reaches the purpose of control radio station power output.And V
ALCHaving, not having of voltage is the control voltage of PTT PTT.V is arranged
ALCThe quiescent potential of the operating voltage of N1 and V1, V31, V32 is added, power amplifier work has power output.No V
ALCDuring voltage, the quiescent potential of the supply voltage of N1 and V1, V31, V32 is zero, and power amplifier is not worked, inactivity output.This voltage is provided by the radio station, and V is arranged
ALCDuring voltage, the radio station is in emission state, and power amplifier has power output.No V
ALCDuring voltage, the radio station is in accepting state, transmitter is not worked, the output of power amplifier inactivity.This voltage is exactly radio station transmitting-receiving keying voltage.
Temperature-control circuit: voltage-stabiliser tube VD20, VD21 and relevant circuit such as temperature sensor ST1 are formed the temperature-control circuit of this power amplifier; indicate the working temperature of power amplifier by the direct voltage size of ST1 output; this voltage is delivered to the radio station and is got on; be used for detecting the working temperature of power amplifier, by the temperature protection of radio station enforcement to power amplifier.
Advantages such as second level amplifier V1 and final amplifier V31, V32 are New-type radio-frequency LDMOS or TMOS field effect transistor, are newly designed frequency microwave high power devices of 21 century, and it has, and power output is big, good linearity, working stability are reliable.Especially V31, V32 are the high-frequency high-power pipes of Gemini encapsulation, can be easy to be designed to push-pull circuit, can effectively suppress even-order harmonic, improve Electro Magnetic Compatibility.
The 28V power supply that the radio station is supplied with is delivered to power amplifier by feed-through filter, adds and has adopted novel anti EMI material, also can effectively improve the electromagnetic compatibility characteristic of this power amplifier.
Claims (8)
1, a kind of aeronautical data chain 600W broadband linear power amplifier, it comprises ALC and modulation circuit, the input of described ALC and modulation circuit connects the radio frequency modulated signal, its output is connected with the pre-amplifying circuit of prime, the pre-amplifying circuit of prime is connected with the gross power distributor, it is characterized in that: the pre-amplifying circuit of described prime comprises two-stage amplifying circuit at least, amplifying circuit connects successively, finally be connected, and each amplifying circuit all is provided with circuit I with the working point of this circuit and is connected with the gross power distributor; Described gross power distributor is connected with at least two final stage amplifying circuits, and the final stage amplifying circuit all disposes the working point circuit is set; Described final stage amplifying circuit all is connected with the gross power synthesizer.
2, aeronautical data chain 600W broadband linear power amplifier according to claim 1, it is characterized in that: described radio frequency modulated signal is a ultra-high frequency signal, the pre-amplifying circuit of described prime comprises three-stage amplifier, the output of first order amplifying circuit is connected with the input of second level amplifying circuit, the output of second level amplifying circuit is connected with the input of third level amplifying circuit, the output of third level amplifying circuit is connected with the gross power distributor, and the output of gross power distributor connects power divider I and power divider II respectively; The output of described power divider I connects final stage amplifying circuit I and final stage amplifying circuit II respectively, and the output of final stage amplifying circuit I and final stage amplifying circuit II all is connected to power combiner I; The output of described power divider II connects final stage amplifying circuit III and final stage amplifying circuit IV respectively, and the output of final stage amplifying circuit III and final stage amplifying circuit IV all is connected to power combiner II; Described power combiner I and power combiner II all are connected to the gross power synthesizer.
3, aeronautical data chain 600W broadband linear power amplifier according to claim 1, it is characterized in that: described radio frequency modulated signal is the very high frequency(VHF) signal, the pre-amplifying circuit of described prime comprises the two-stage amplifying circuit, the output of first order amplifying circuit is connected with the input of second level amplifying circuit, the output of second level amplifying circuit is connected with the gross power distributor, the output of gross power distributor connects final stage amplifying circuit V and final stage amplifying circuit VI respectively, and described final stage amplifying circuit V and final stage amplifying circuit VI all are connected to the gross power synthesizer.
4, according to claim 2 or 3 described aeronautical data chain 600W broadband linear power amplifiers, it is characterized in that: in pre-amplifying circuit of described prime and final stage amplifying circuit, all adopt frequency microwave TMOS or LDMOS field effect transistor as power amplifier.
5, aeronautical data chain 600W broadband linear power amplifier according to claim 1 is characterized in that: described ALC and modulation circuit are any one in ALC and amplitude modulation modulation circuit or ALC and fm modulation circuit or ALC and the digital modulation circuit.
6, aeronautical data chain 600W broadband linear power amplifier according to claim 5 is characterized in that: described ALC and modulation circuit are connected with ALC control potential circuit.
7, aeronautical data chain 600W broadband linear power amplifier according to claim 1 is characterized in that: the working point that the working point of the pre-amplifying circuit of described prime is provided with circuit I and final stage amplifying circuit is provided with circuit and all is connected with PTT PTT control circuit.
8, aeronautical data chain 600W broadband linear power amplifier according to claim 1, it is characterized in that: described gross power distributor and gross power synthesizer are respectively the high-power distributor of Wilkinson, the high-power synthesizer of Wilkinson.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200887414U CN201360241Y (en) | 2009-02-27 | 2009-02-27 | Aeronautical data link 600W broadband linear power amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200887414U CN201360241Y (en) | 2009-02-27 | 2009-02-27 | Aeronautical data link 600W broadband linear power amplifier |
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| Publication Number | Publication Date |
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| CN201360241Y true CN201360241Y (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2009200887414U Expired - Fee Related CN201360241Y (en) | 2009-02-27 | 2009-02-27 | Aeronautical data link 600W broadband linear power amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024656A (en) * | 2015-08-14 | 2015-11-04 | 泉州科立讯数据技术有限公司 | Radio frequency synthesis power amplifier circuit with optional bandwidth |
-
2009
- 2009-02-27 CN CNU2009200887414U patent/CN201360241Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024656A (en) * | 2015-08-14 | 2015-11-04 | 泉州科立讯数据技术有限公司 | Radio frequency synthesis power amplifier circuit with optional bandwidth |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHENGZHOU HUAHANG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHENGZHOU HUAHANG SCIENCE AND TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Henan city of Zhengzhou province high tech Zone pagoda street Torch Hotel B1702 room Patentee after: ZHENGZHOU HUAHANG TECHNOLOGY CO., LTD. Address before: 450001 Henan city of Zhengzhou province high tech Zone pagoda street Torch Hotel B1702 room Patentee before: Zhengzhou Huahang Science and Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20180227 |