CN112737147A - Large dynamic high-efficiency microwave rectification scheme based on non-magnetic non-reciprocal network - Google Patents
Large dynamic high-efficiency microwave rectification scheme based on non-magnetic non-reciprocal network Download PDFInfo
- Publication number
- CN112737147A CN112737147A CN202011437866.0A CN202011437866A CN112737147A CN 112737147 A CN112737147 A CN 112737147A CN 202011437866 A CN202011437866 A CN 202011437866A CN 112737147 A CN112737147 A CN 112737147A
- Authority
- CN
- China
- Prior art keywords
- port
- circuit
- stage
- rectification
- network
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000013461 design Methods 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000005855 radiation Effects 0.000 claims abstract description 5
- 230000010354 integration Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 10
- 239000003302 ferromagnetic material Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/10—Parallel operation of DC sources
- H02J1/102—Parallel operation of DC sources being switching converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rectifiers (AREA)
Abstract
本发明针对传统的阻抗匹配技术，不能解决在大动态功率输入时阻抗失配造成的回波损耗、二次辐射及整流电路集成化、多功能应用扩展问题，公布了一种基于非磁性非互易网络的高效率整流电路方案。本发明的技术特征在于该非磁性非互易网络利用时域信号对输入信号在时间和空间上调制的方法，并设计相应的时空调制算法，打破时间反演对称性，使其具有单向传输、反向高隔离的特性，并首次提出应用于整流电路中。该整流电路方案由多端口非磁性非互易网络、多级整流电路及直流负载组成，整流电路将反射波回收进行多级整流，提升微波能量利用率和整流效率。该网络不受限于材料种类，易于实现集成化和轻量化，能够应用到微波能量传输系统中。
Aiming at the traditional impedance matching technology, the invention cannot solve the problems of return loss, secondary radiation and rectification circuit integration and multi-functional application expansion caused by impedance mismatch when large dynamic power is input. Easy network's high-efficiency rectifier circuit scheme. The technical feature of the present invention is that the non-magnetic non-reciprocal network uses the time domain signal to modulate the input signal in time and space, and designs the corresponding time and space modulation algorithm to break the symmetry of time inversion and make it have one-way transmission , the characteristics of reverse high isolation, and the first proposed application in the rectifier circuit. The rectifier circuit scheme is composed of a multi-port non-magnetic non-reciprocal network, a multi-stage rectifier circuit and a DC load. The rectifier circuit recycles the reflected wave for multi-stage rectification to improve microwave energy utilization and rectification efficiency. The network is not limited by material types, is easy to achieve integration and lightweight, and can be applied to microwave energy transmission systems.
Description
Technical Field
The invention relates to the technical field of microwave energy transmission, in particular to a high-efficiency rectifying circuit based on a non-magnetic non-reciprocal network.
Background
The microwave energy transmission technology is an important research direction in the technical field of new energy, point-to-point transmission of microwave energy from a transmitting end to a receiving end is realized through free space, the limitation of the traditional energy transmission by using cables is broken through, a new energy transmission method is developed, and infinite possibility is brought to the application of the future new energy technology. The method has increasingly increased application requirements in the fields of industry, science and technology and military, has wide application prospect and higher academic research value, and plays a great role in promoting the development of the economy and society.
The traditional impedance matching technology of the rectifying circuit can not solve the problem of return loss caused by impedance mismatch when large dynamic power is input, and the return loss is the main reason of reducing the efficiency of the whole microwave energy transmission system due to the waste of a large amount of energy. Meanwhile, if the reflected wave is transmitted back to the receiving end and radiated out through the receiving antenna, a serious secondary radiation problem is generated. In recent years, by loading an isolator such as a circulator in a circuit structure, microwave energy is transmitted in a single direction, and reflected waves are rectified secondarily, so that the problem of return loss can be effectively solved, and the utilization rate of the microwave energy and the rectification efficiency of a rectification circuit can be improved.
Hao Zhang et al published an article entitled "differential-fed charging design with an enhanced inductance for an ambient RF energy charging" on 2017IEEE MTT-S International Microwave Symposium (4-9June 2017), and realized the differential feeding of the circuit by using a ring coupler on the basic rectifying circuit structure, thereby suppressing the influence of common-mode signals and improving the rectifying efficiency by 5%. An article entitled "Symbol-Splitting-Based multiple Wireless Information and Power Transfer System for WPAN Applications" is published by Zhenzhen Jiang et al in IEEE Microwave and Wireless Components Letters (vol.30, No.7, pp.713-716, July.2020), which uses a ring coupler to achieve isolation of signals at different output ports in a portable communication System, and to achieve functions of rectification and communication data recovery of the circuit, respectively. An article entitled "Design of an effective-enhanced semiconductor amplification in the GSM 1800band by using a rate-source coupler for RF generating rectifying applications" is published by Gozel MA et al in Int J RF micro computer aid Eng (vol.29, No.1, pp.1-8, January.2019), and the ring coupler is used for realizing differential feeding of the circuit, suppressing common-mode signals and improving the rectifying efficiency of the circuit. Although the ring coupler can realize differential feeding and suppress common-mode signals, compared with a circulator, the ring coupler cannot realize unidirectional transmission and reverse isolation of microwave energy. Therefore, the problems of return loss and secondary radiation of circuit impedance mismatch cannot be solved, and the rectification efficiency improvement effect is limited.
The major paper (pp.39-46.2015) published in china knowledge network by Jiangfen et al entitled "research on key technology of rectifying antenna in microwave energy transmission system" utilizes the one-way conduction characteristic of ferrite circulator to transmit the reflected wave generated by the impedance mismatch of the rectifying circuit and the higher harmonic generated by the nonlinear characteristic of the diode to the next stage of rectifying circuit, so as to improve the utilization rate of energy, and the conversion efficiency of the rectifying circuit is improved by 9% -11% under different input powers. However, the non-reciprocal property of the circulator is realized by utilizing the ferrite which is an anisotropic magnetic material, and the working bandwidth is very narrow due to the frequency dependence of the ferrite. Meanwhile, the volume and weight of the circuit are increased due to the introduction of the ferromagnetic material, and the ferromagnetic material is difficult to integrate with the existing integrated circuit process, which is not favorable for the miniaturization, light weight and integrated design of the microwave energy transmission system, so that the ferromagnetic material cannot be well applied to the microwave energy transmission system.
Disclosure of Invention
Aiming at the defects of the prior art scheme, the invention provides a high-efficiency rectification circuit based on a non-magnetic non-reciprocal network, which utilizes a method for modulating an input signal in time and space by using a time domain signal and designs a corresponding space-time modulation algorithm to realize the high-efficiency rectification circuit scheme based on the non-magnetic non-reciprocal network.
The specific technical scheme is as follows:
the microwave energy receiving end is connected with a planar non-magnetic non-reciprocal network unit, the network is a multi-port device structure, electromagnetic waves can only circulate along a single direction for transmission, and the isolation degree is higher in the reverse direction. As shown in fig. 1, a 3-port non-reciprocal transmission network unit includes a delay line with a certain delay delta and several switches. At each end of the port, a switch is connected with a delay line, and the turn-off of the switch is controlled by designing certain sequential logic to realize the space-time modulation of signals. The switching sequence control function C (t, m, n) proposed by the formula (1) for realizing the nonreciprocal characteristic of the microwave network is as follows:
where C (·) is a switch control timing sequence, t represents time, m is the number of ports, N is the number of delay units, H [ · ] is a unit step function, and j ═ mod (m +2N-2,2N) is a judgment function. When the switch is controlled by the timing sequence (as shown in fig. 2) represented by the formula (1), the signal input from the port (r) is separated in 2 transmission lines by the time domain, passes through the delay line with the time delay delta, is transmitted to the other end, and is received by the port (ii). Similarly, the signal transmitted from the port (c) is transmitted to the port (c) instead of the port (c), so that the time reversal symmetry is broken, and the non-reciprocal property is achieved. Meanwhile, different levels can be designed according to different circuit requirements, the expansion of multiple ports of the non-magnetic non-reciprocal network unit is realized, and the next non-magnetic non-reciprocal network unit is accessed to the port III.
The traditional impedance matching technology used by the rectifying circuit can not solve the problem of return loss caused by impedance mismatch when large dynamic power is input. Meanwhile, the return loss is a main reason for causing a large amount of energy waste and reducing the efficiency of the microwave energy transmission system, and meanwhile, if the reflected wave is transmitted back to the receiving end and radiated out through the receiving antenna, a serious secondary radiation problem is generated. The invention realizes the one-way transmission characteristic of electromagnetic waves according to the working principle of the non-magnetic non-reciprocal network, and proposes that the non-magnetic non-reciprocal network is used in a rectifying circuit for the first time. The non-magnetic non-reciprocal network provided by the invention can realize the one-way transmission of electromagnetic waves, has higher isolation in the reverse direction, can effectively solve the problem of return loss, and recovers the reflected waves to the rectifying circuit connected with the lower port of the non-magnetic non-reciprocal network for secondary rectification, thereby improving the rectification efficiency of the rectifying circuit.
The non-magnetic non-reciprocal network provided by the invention has strong applicability and generalizability. The circulator made of magnetic materials such as ferrite has very narrow working bandwidth due to the frequency dependence, and meanwhile, the volume and the weight of the rectifying circuit are increased due to the introduction of the ferromagnetic materials, and the circulator is difficult to integrate with the existing integrated circuit process, thereby being not beneficial to the miniaturization, the light weight and the integrated design of a microwave energy transmission system. The non-magnetic non-reciprocal network provided by the invention can be integrally designed by using the same material as the designed rectifying circuit, the adopted circuit process can be compatible with the traditional integrated circuit, is not limited by the material types, can effectively reduce the volume weight and the application cost, has higher design freedom degree and application expansibility, can be better applied and popularized to the research of microwave circuits, and is convenient for the miniaturization, the light weight and the integrated design of a microwave energy transmission system.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic diagram of a three-port non-magnetic non-reciprocal network structure based on time reversal asymmetry in example 1 of the present invention;
FIG. 2 is a schematic diagram of signal distribution corresponding to the switching timing sequence of the three-port non-magnetic non-reciprocal network space-time modulation algorithm in example 1;
FIG. 3 is a schematic diagram of a high-efficiency rectification circuit scheme based on a three-port non-magnetic non-reciprocal network in example 1 of the present invention;
FIG. 4 is a schematic diagram of a high-efficiency rectifier circuit based on a three-port non-magnetic non-reciprocal network in example 1 of the present invention;
FIG. 5 is a schematic diagram of a non-magnetic non-reciprocal network topology based on arbitrary 2N port expansion in example 1 of the present invention;
FIG. 6 is a schematic diagram of signal distribution corresponding to the switch timing sequence of the non-magnetic non-reciprocal network space-time modulation algorithm based on arbitrary 2N port expansion in embodiment 1 of the present invention;
FIG. 7 is a schematic diagram of a multi-stage expansion of a high-efficiency rectification circuit scheme of a non-magnetic non-reciprocal network based on arbitrary 2N port expansion in embodiment 1 of the present invention;
FIG. 8 is a schematic diagram of a multistage expansion of a high-efficiency rectifier circuit based on a non-magnetic non-reciprocal network with arbitrary 2N port expansion in embodiment 1 of the present invention;
fig. 9 is a schematic diagram of a power amplifier tube high-power rectification circuit of a non-magnetic non-reciprocal network based on arbitrary 2N port expansion in embodiment 2 of the present invention;
Detailed Description
The following detailed description of embodiment 1 of the present invention is provided in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
When the switch is controlled by using the time sequence shown in fig. 2, a microwave signal input from a port (i) of the asymmetric three-port non-magnetic non-reciprocal network based on time reversal in fig. 1 is separated in 2 transmission lines by a time domain, is transmitted to the other end after passing through a delay line with time delay delta, is received by a port (ii), and is transmitted to a first-stage rectifying circuit accessed by the port (ii) for rectification. The signal reflected from the port II is transmitted to the port III, but not the port I, the time reversal symmetry of the network is broken, and the network has the nonreciprocal characteristic. And the port (c) is connected with a second-stage rectification circuit, and secondary rectification is performed on the recovered reflected wave energy, so that the problem of return loss is solved, and the rectification efficiency of the circuit is improved.
This embodiment is shown in fig. 3, which is a simple high efficiency rectifier circuit composed of a three-port non-magnetic non-reciprocal network unit, a rectifier, a pass-through filter and a dc load. Meanwhile, as shown in fig. 4, the high-efficiency rectification circuit based on the non-magnetic non-reciprocal network provided by the invention adopts a design scheme based on a time reversal asymmetric three-port non-magnetic non-reciprocal network unit, two blocking capacitors, four rectifier diodes, two straight-through filters composed of 1/4 wavelength microstrip lines and parallel capacitors and a direct-current load.
Microwave signals are input from a port I and then are separated in 2 transmission lines by time domain, the microwave signals are transmitted to the other end of the delay line after passing through the delay line with time delay delta and are received by the port II, and microwave energy is transmitted to a first-stage rectifying circuit connected to the port II to be rectified. The first stage rectification circuit comprises a blocking capacitor (301), voltage-multiplying rectification diodes (302) and (303) and a through filter (202), and comprises an 1/4 wavelength microstrip line (304) and a parallel capacitor (305), and the direct current power converted by the rectification circuit is transmitted to a direct current load (4). The electromagnetic wave reflected by the circuit is recovered to the port and is rectified by the second-stage rectification circuit accessed according to the characteristics of unidirectional transmission and high isolation of the non-magnetic non-reciprocal network. The second stage rectification circuit comprises a blocking capacitor (306), voltage-multiplying rectification diodes (307) and (308), a through filter (204), an 1/4 wavelength microstrip line (309) and a parallel capacitor (310), and direct current power converted by the rectification circuit is transmitted to a direct current load (4) to fully utilize reflected electromagnetic waves.
The above embodiment 1 is only to illustrate the core idea of the present invention, and the number of ports of the non-magnetic non-reciprocal network unit and the number of stages used by the rectifier circuit can be expanded to adjust the number and structure of the rectifier diodes and filters according to the specific circuit working and testing environment and the requirements for circuit integration, large dynamic power input and multi-functional application expansion in the implementation process, as shown in fig. 5, 6, 7 and 8 (N is greater than or equal to 2).
In the microwave circuit, the power capacity of the diode is small, and the diode is suitable for low-power rectification. In practical application expansion, in order to realize high-power rectification, the diode of the rectifier in the embodiment 1 can be replaced by a power amplifier tube. As shown in fig. 9, which is a schematic diagram of a circuit scheme for implementing high-power rectification of a power amplifier tube in embodiment 2, a voltage-multiplying parallel diode (302) and a voltage-multiplying series diode (303) are replaced by the power amplifier tube (302) and a reference voltage source (303). The power amplifier tube can realize the rectification of microwave power in reverse use through the circuit topology of fig. 9 based on the time reversal dual theory.
Claims (7)
1. A large dynamic high-efficiency microwave rectification scheme based on a non-magnetic non-reciprocal network is characterized in that the rectification scheme is composed of a multi-port non-magnetic non-reciprocal network and a multi-stage rectification circuit, and a next-stage rectification circuit conducts secondary rectification after energy reflected by an upper-stage rectification circuit is transmitted in a single direction through the non-magnetic non-reciprocal network, so that the problems of return loss and secondary radiation of a circuit are solved, and the efficiency of the rectification circuit is improved. The circuit scheme can realize large-scale integration and large dynamic power input of the multistage rectifying circuit through port expansion of the non-magnetic non-reciprocal network; the scheme of the high-efficiency rectifying circuit based on the non-magnetic non-reciprocal network comprises a multi-port non-magnetic non-reciprocal network (1), a multi-stage rectifying circuit (2) and a direct-current load (4).
2. The multi-stage rectification circuit (2) of claim 1 comprising a first stage rectifier (201), a second stage rectifier (203), a first stage pass filter (202), a second stage pass filter (204); the first-stage rectifier (201) consists of a blocking capacitor (301), a voltage-multiplying parallel diode (302) and a voltage-multiplying series diode (303); the second-stage rectifier (203) consists of a blocking capacitor (306), a voltage-multiplying parallel diode (307) and a voltage-multiplying series diode (308); the first-stage through filter (202) consists of an 1/4 wavelength microstrip line (304) and a parallel capacitor (305); the second-stage through filter (204) consists of an 1/4 wavelength microstrip line (309) and a parallel capacitor (310); the rectifiers (201, 203) are not limited to the form of double-diode series-parallel connection, but can be adjusted to the form of single-diode series connection, single-diode parallel connection and the form of a power amplifier tube for realizing high-power rectification in practical application; the through filters (202, 204) are not limited to lumped and distributed parameter mixed forms, and can be pure lumped parameter or distributed parameter forms in practical application.
3. The non-magnetic non-reciprocal network of claim 1, wherein a time-domain signal is used to modulate the input signal in time and space, and a corresponding space-time modulation algorithm is designed to break the symmetry of time inversion, so that the network has non-reciprocal properties, and can realize unidirectional transmission and reverse direction with high isolation.
4. The unidirectional conducting and reverse isolating feature of claim 3, wherein the second stage rectifying circuit for recovering the reflected wave to the next port of the non-magnetic non-reciprocal network performs a second rectifying, and the converted DC energy and the energy obtained by the first stage rectifying circuit are transmitted to the load instead of being reflected back to the input port, thereby improving the energy utilization while solving the return loss.
5. The rectifier circuit according to claim 1, wherein the non-magnetic non-reciprocal network unit is an asymmetric three-port structure based on time reversal, microwave signals are input from port (r), time-domain separated in 2 transmission lines, transmitted to the other end through a delay line with a delay of δ, received by port (r), and signals reflected from port (r) are transmitted to port (r) instead of port (r), with the energy transmission direction being port (r → r). The port I is connected with a microwave input, the port II is connected into a first-stage rectifying circuit, and the port III is connected into a second-stage rectifying circuit.
6. The rectifier circuit of claim 5 wherein the number of ports of the non-magnetic non-reciprocal network element and the number of stages used in the rectifier circuit are extended to adjust the number and configuration of the rectifier diodes and filters according to the particular circuit operating and testing environment.
7. The non-magnetic non-reciprocal network of claim 3, which is not limited by the kind of material, and can be designed integrally with the same material as the rectifying circuit, and the circuit process used is compatible with the conventional integrated circuit, has a high degree of freedom in design, and can be applied to a microwave energy transmission system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011437866.0A CN112737147A (en) | 2020-12-10 | 2020-12-10 | Large dynamic high-efficiency microwave rectification scheme based on non-magnetic non-reciprocal network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011437866.0A CN112737147A (en) | 2020-12-10 | 2020-12-10 | Large dynamic high-efficiency microwave rectification scheme based on non-magnetic non-reciprocal network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112737147A true CN112737147A (en) | 2021-04-30 |
Family
ID=75598736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011437866.0A Pending CN112737147A (en) | 2020-12-10 | 2020-12-10 | Large dynamic high-efficiency microwave rectification scheme based on non-magnetic non-reciprocal network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112737147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117156544A (en) * | 2023-10-30 | 2023-12-01 | 为准（北京）电子科技有限公司 | Circuit capable of adjusting radio frequency signal time delay and communication device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309639A (en) * | 2005-10-24 | 2008-11-19 | 鲍尔卡斯特公司 | Method and apparatus for high efficiency rectification for various loads |
| US20090002236A1 (en) * | 2007-06-26 | 2009-01-01 | Weimin Zhou | Electro optical scanning phased array antenna for pulsed operation |
| CN104467467A (en) * | 2015-01-07 | 2015-03-25 | 重庆大学 | Scheme for converting microwave energy into direct current during large dynamics |
| CN110994965A (en) * | 2019-12-13 | 2020-04-10 | 西北大学 | Harmonic suppression load structure and voltage doubling rectifying circuit |
| CN211700521U (en) * | 2020-01-06 | 2020-10-16 | 北京春藤星创教育科技有限公司 | L-band frequency reconfigurable non-reciprocal filter |
-
2020
- 2020-12-10 CN CN202011437866.0A patent/CN112737147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309639A (en) * | 2005-10-24 | 2008-11-19 | 鲍尔卡斯特公司 | Method and apparatus for high efficiency rectification for various loads |
| US20090002236A1 (en) * | 2007-06-26 | 2009-01-01 | Weimin Zhou | Electro optical scanning phased array antenna for pulsed operation |
| CN104467467A (en) * | 2015-01-07 | 2015-03-25 | 重庆大学 | Scheme for converting microwave energy into direct current during large dynamics |
| CN110994965A (en) * | 2019-12-13 | 2020-04-10 | 西北大学 | Harmonic suppression load structure and voltage doubling rectifying circuit |
| CN211700521U (en) * | 2020-01-06 | 2020-10-16 | 北京春藤星创教育科技有限公司 | L-band frequency reconfigurable non-reciprocal filter |
Non-Patent Citations (1)
| Title |
|---|
| YAO YU等: ""Radio Frequency Magnet-Free Circulators Based on Spatiotemporal Modulation of Surface Acoustic Wave Filters"", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117156544A (en) * | 2023-10-30 | 2023-12-01 | 为准（北京）电子科技有限公司 | Circuit capable of adjusting radio frequency signal time delay and communication device |
| CN117156544B (en) * | 2023-10-30 | 2023-12-29 | 为准（北京）电子科技有限公司 | Circuit capable of adjusting radio frequency signal time delay and communication device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104868611B (en) | Resonant wireless electric energy transmission system based on double-E type power amplifier | |
| CN102104363A (en) | Tera-hertz silica-based quadrupler and frequency multiplier | |
| CN105322265B (en) | Power divider/synthesizer based on fan-shaped waveguide | |
| CN110112937A (en) | Switching transistor rectifier suitable for the application of microwave and millimeter wave wireless energy transfer | |
| CN213879769U (en) | High-power hybrid synthetic circuit of multi-module X-band solid-state transmitter | |
| CN112737147A (en) | Large dynamic high-efficiency microwave rectification scheme based on non-magnetic non-reciprocal network | |
| CN213879768U (en) | Solid-state power amplifier module for improving output power | |
| TWI806749B (en) | Differential millimeter wave communication architecture and electronic equipment | |
| CN116032227B (en) | Dual-polarized high-power transceiving multifunctional chip | |
| CN115764225B (en) | Waveguide power divider | |
| CN117153893A (en) | Finger-type Schottky diode and tripler | |
| CN105635010B (en) | The direct modulator of Ka frequency range millimeter wave harmonic waves | |
| CN211296331U (en) | A Series Autonomous Electromagnetic Field Double Coupling Wireless Power Transmission System | |
| CN116859341A (en) | An ultra-wideband GaAs amplitude and phase control transceiver front-end chip | |
| CN211296323U (en) | A non-voltage source series autonomous electromagnetic field double-coupling wireless power transmission system | |
| CN111865107B (en) | High-efficiency rectifying circuit with wide input power range | |
| CN103532524B (en) | Pulse radio signal generating and transmitting system and control method of system | |
| CN211296324U (en) | A Parallel Autonomous Electromagnetic Field Double Coupling Wireless Power Transmission System | |
| CN211296322U (en) | A voltage-free parallel-type autonomous electromagnetic field double-coupling wireless power transmission system | |
| CN202513878U (en) | Millimeter wave active frequency multiplier integrated circuit | |
| CN115295630A (en) | A frequency-doubling diode with interdigitated structure | |
| CN207282710U (en) | High power RECTIFYING ANTENNA in a kind of compact | |
| CN110943549A (en) | A Series Autonomous Electromagnetic Field Double Coupling Wireless Power Transmission System | |
| CN114726395B (en) | Wireless information and energy simultaneous transmission system based on adjustable frequency source and working method thereof | |
| CN114069178B (en) | An Integrated CMOS Circulator Based on Spatiotemporal Conductivity Modulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210430 |
|
| WD01 | Invention patent application deemed withdrawn after publication |