CN107565924A - The clamped beam receiver front end that internet of things oriented standing wave energy and release model are collected - Google Patents
The clamped beam receiver front end that internet of things oriented standing wave energy and release model are collected Download PDFInfo
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- CN107565924A CN107565924A CN201710696524.2A CN201710696524A CN107565924A CN 107565924 A CN107565924 A CN 107565924A CN 201710696524 A CN201710696524 A CN 201710696524A CN 107565924 A CN107565924 A CN 107565924A
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Abstract
The clamped beam receiver front end that the internet of things oriented standing wave energy and release model of the present invention is collected receives microwave signal using microwave antenna and accesses the standing wave energy collection tunable filter based on clamped beam and is filtered, collect standing wave energy simultaneously, after then signal enters low-noise amplifier and is exaggerated, into the clamped beam frequency mixer of oscillation signals leak collection of energy, while mixing is realized, the energy of the local oscillated signal of mixing structure leakage is have collected, the signal after mixing realizes that intermediate frequency exports into intermediate-frequency filter；Two kinds of energy being collected above are stored in battery after being converted into DC voltage by AC/DC modular converters, store energy battery it is in parallel with dc source after, for active circuit power.The present invention can collect standing wave energy and release model, improve electromagnetic compatible environment, prevent local oscillated signal self-mixing, reduce power consumption, improve the performance of system.
Description
Technical field
The present invention proposes the clamped beam receiver front end that a kind of internet of things oriented standing wave energy and release model are collected, category
In microelectromechanical systems (MEMS) technical field.
Background technology
In recent years, Internet of Things is discussed warmly as the country and one of the problem of primary study, and many countries are by Internet of Things
The online height for being upgraded to national strategy.As the receiver front end of one of Internet of Things core component because it is many shortcomings that, limited
Application and development are made.For example the transmitting-receiving subassembly of microwave receiver front end has very strong standing wave electromagnetic interference, to processing of circuit
Bring cumbersome；In addition have part local oscillated signal and leak into low-noise amplifier through being mixed device, be then blocked
Back wave is produced, this back wave is mixed with local oscillated signal again, then can produce direct current signal in the output end of frequency mixer, no
DC maladjustment can only be caused, can also increase DC power.In recent years, with the fast development of MEMS technology, and to MEMS energy
Collection technique and MEMS filter technology are conducted in-depth research so that internet of things oriented standing wave energy and release model are collected
Clamped beam receiver front end have realize possibility.
The content of the invention
Goal of the invention：Collected it is an object of the invention to provide a kind of internet of things oriented standing wave energy and release model clamped
Beam receiver front end.Receiver uses microwave antenna reception signal, accesses the standing wave energy based on clamped beam and collects adjustable filtering
Device is filtered, while reaches standing wave energy collection, reduces the purpose of standing wave electromagnetic interference.Filtered signal enters low noise
Amplifier amplifies, and exaggerated microwave signal enters the clamped beam frequency mixer of oscillation signals leak collection of energy, is realizing tradition
While mixing, DC maladjustment caused by local oscillated signal self-mixing is eliminated, and the local for collecting mixing structure leakage shakes
The energy of signal is swung, the signal after mixing connects intermediate-frequency filter, finally realizes that intermediate frequency exports.Two kinds of energy being collected above are same
When DC voltage is converted into by AC/DC modular converters after be stored in rechargeable battery, after rechargeable battery is in parallel with dc source with
Active circuit is connected, and realizes the self-powered of active circuit.
Technical scheme：In order to solve the above technical problems, the present invention proposes a kind of internet of things oriented standing wave energy and leakage
The clamped beam receiver front end of collection of energy.Before the clamped beam receiver that the internet of things oriented standing wave energy and release model are collected
End includes:Microwave antenna, the standing wave energy based on clamped beam collect tunable filter, rechargeable battery, low-noise amplifier, vibration
Clamped beam frequency mixer, local oscillator, intermediate-frequency filter, the dc source of signals leakiness collection of energy.
Microwave antenna, for receiving microwave signal.
Standing wave energy based on clamped beam collects tunable filter, is by LC variable band-pass filters, the filter of LC tunable band-stops
Ripple device 10, LC tunable band-stop filters 11, the 12-2 of one 12-1, AC/DC modular converter of AC/DC modular converters two, microwave signal are defeated
Inbound port and microwave signal output port are formed.Wherein LC tunable band-stop filters 10 and the structure of LC tunable band-stop filters 11 is complete
Complete the same, the frequency domain of its stopband is identical with the frequency domain of LC bandpass filter passbands, forms complementary, the He of LC tunable band-stop filters 10
The passband frequency domain of LC tunable band-stop filters 11 is identical with the frequency domain of standing wave signal, can collect LC variable band-pass filters both ends
Standing wave energy, and can realize that filter filtering frequency range is adjustable.
Rechargeable battery, by 12-2 the and AC/DC modular converters 3 19 of one 12-1, AC/DC modular converter of AC/DC modular converters two
Obtained DC voltage energy storage is while in parallel with dc source 4 among battery, and self-powered is realized to active circuit.
Low-noise amplifier, amplify the microwave signal of input, the clamped beam of output access oscillation signals leak collection of energy
Frequency mixer.
The clamped beam frequency mixer of oscillation signals leak collection of energy, it is by bandpass filter 18, AC/DC modular converters 3 19
Formed with mixing structure 23.Mixing structure 23 is three-port network, connects signal input port 21, local oscillated signal respectively
Input port 20 and mixed frequency signal output port 22, the input of bandpass filter 18 are connected with being mixed the input of structure 23
Connect, local oscillator 7 is connected with being mixed the local oscillated signal input port 20 of structure 23, the output termination of bandpass filter 18
AC/DC modular converters 3 19, AC/DC modular converters 3 19 are connected with rechargeable battery realizes collection of energy.Wherein bandpass filter
18 centre frequency is identical with the frequency of local oscillated signal, can will pass through what mixing structure 23 leaked by local oscillated signal
Energy absorption, solve the problems, such as the local oscillated signal self-mixing of leakage, and have collected and tied by local oscillated signal through mixing
The energy of structure leakage, and input signal belongs to the stopband frequency domain of bandpass filter 18, its frequency is in the logical of bandpass filter 18
Beyond band, mixing structure 23 will not be directly entered by bandpass filter 18.
Local oscillator, produce local oscillated signal.
Intermediate-frequency filter, intermediate-freuqncy signal is exported after filtering.
Beneficial effect：
The present invention has advantages below relative to existing microwave receiver：
1. include base in the clamped beam receiver front end that the internet of things oriented standing wave energy and release model of the present invention are collected
Tunable filter is collected in the standing wave energy of clamped beam.Described wave filter only needs simply to control under condenser type clamped beam
Draw the size of driving voltage, it is possible to the filtering of wave filter is adjusted, it is simple to operate.In addition, two structures in the present invention are complete
The frequency domain of the same LC tunable band-stop filter stopbands is identical with the frequency domain of LC bandpass filter passbands, forms complementation, LC is adjustable
Microwave signal outside the passband frequency range of bandpass filter forms standing wave, LC tunable band-stop filters 10 and LC adjustable bands at its both ends
It is identical with standing wave signal frequency range to hinder the passband frequency range of wave filter 11, the standing wave at LC variable band-pass filters both ends can be collected, and
DC voltage is converted into using AC/DC modular converters, is ultimately stored in rechargeable battery, while filtering, also improves electricity
The electromagnetic compatible environment on road；
2. the clamped beam receiver front end that the internet of things oriented standing wave energy and release model of the present invention are collected includes vibration
The clamped beam frequency mixer of signals leakiness collection of energy.Described frequency mixer has added bandpass filter before traditional mixing structure
18, the centre frequency of bandpass filter 18 is identical with the frequency of local oscillated signal, can will be by local oscillated signal through overmulling
The energy absorption of frequency structure leakage, solves the problems, such as the local oscillated signal self-mixing of leakage, and input signal belongs to band logical
The stopband frequency domain of wave filter 18, its frequency are in beyond the passband of bandpass filter 18, will not be by bandpass filter 18, directly
Into mixing structure 23, this, which is designed, causes the energy of leakage to be collected, and is finally stored in rechargeable battery, reduces direct current
Power consumption；
3. rechargeable battery is in parallel with dc source, self-powered is realized to active circuit.
Brief description of the drawings
Fig. 1 is the principle for the clamped beam receiver front end that the internet of things oriented standing wave energy of the present invention and release model are collected
Block diagram.
Fig. 2 is the structured flowchart that the standing wave energy based on clamped beam collects tunable filter.
Fig. 3 is the schematic diagram of LC variable band-pass filters and bandpass filter 18.
Fig. 4 is the schematic diagram of LC tunable band-stop filters 10 and LC tunable band-stop filters 11.
Fig. 5 is the electric capacity in LC variable band-pass filters, LC tunable band-stop filters 10 and LC tunable band-stop filters 11
The top view of formula clamped beam.
Fig. 6 is the electric capacity in LC variable band-pass filters, LC tunable band-stop filters 10 and LC tunable band-stop filters 11
BB ' the faces profile of formula clamped beam.
Fig. 7 is the structure chart of the clamped beam frequency mixer of oscillation signals leak collection of energy.
The theory diagram for the clamped beam receiver front end that internet of things oriented standing wave energy and release model are collected includes：It is micro-
Wave antenna 1, the standing wave energy based on clamped beam collect tunable filter 2, rechargeable battery 3, dc source 4, low-noise amplifier
5, the clamped beam frequency mixer 6 of oscillation signals leak collection of energy, local oscillator 7, intermediate-frequency filter 8, intermediate frequency output 9.It is based on
The standing wave energy of clamped beam collects tunable filter 2 by LC variable band-pass filters, LC tunable band-stop filters 10, LC adjustable bands
Hinder wave filter 11, the 12-2 of AC/DC modular converters one 12-1, AC/DC modular converter two, microwave signal input port, microwave signal
Output port is formed；LC variable band-pass filters 11, bandpass filter 18, LC tunable band-stop filter 12-1 and LC tunable band-stops
Wave filter 12-2 is formed by planar inductor and condenser type clamped beam, and condenser type clamped beam is by first paragraph transmission line 13, second segment
Transmission line 14, metal pad16, the first pull-down electrode 15, the second pull-down electrode 17 are formed.Oscillation signals leak collection of energy is consolidated
Strutbeam frequency mixer 6 is by signal input port 21, mixed frequency signal output port 22, bandpass filter 18, AC/DC modular converters three
19, it is mixed structure 23 and local oscillated signal input port 20 is formed.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
The specific implementation for the clamped beam receiver front end that the internet of things oriented standing wave energy and release model of the present invention is collected
Scheme is as follows：
The present invention proposes that the clamped beam receiver front end that internet of things oriented standing wave energy and release model are collected includes：Microwave
Antenna 1, the standing wave energy collection tunable filter 2 based on clamped beam, rechargeable battery 3, dc source 4, low-noise amplifier 5,
The clamped beam frequency mixer 6 of oscillation signals leak collection of energy, local oscillator 7, intermediate-frequency filter 8, intermediate frequency output 9.Based on solid
The standing wave energy of strutbeam collects tunable filter 2 by LC variable band-pass filters, LC tunable band-stop filters 10, LC tunable band-stops
Wave filter 11, the 12-2 of AC/DC modular converters one 12-1, AC/DC modular converter two, microwave signal input port, microwave signal are defeated
Exit port is formed；LC variable band-pass filters 11, bandpass filter 18, the filter of LC tunable band-stop filter 12-1 and LC tunable band-stop
Ripple device 12-2 is formed by planar inductor and condenser type clamped beam, and condenser type clamped beam is passed by first paragraph transmission line 13, second segment
Defeated line 14, metal pad16, the first pull-down electrode 15, the second pull-down electrode 17 are formed.Oscillation signals leak collection of energy it is clamped
Beam frequency mixer 6 is by signal input port 21, mixed frequency signal output port 22, bandpass filter 18, AC/DC modular converters 3 19,
Mixing structure 23 and local oscillated signal input port 20 are formed.
As shown in figure 1, microwave antenna 1 receives microwave signal, the signal is collected by the standing wave energy based on clamped beam
After tunable filter 2, realizing that the standing wave energy that bandpass filter both ends are formed can be by the bandreject filtering at both ends while filtering
The wave filter of device absorbs.Then signal reaches the low-noise amplifier 5 of next stage, and exaggerated microwave signal passes through oscillator signal
The clamped beam frequency mixer 6 that release model is collected, except that realizes conventional mixer structure downconverts to intermediate-freuqncy signal by input signal
Function outside, can collect mixing structure leakage local oscillated signal energy.Signal after mixing passes through intermediate frequency filtering
After device 8 filters, manageable intermediate frequency output 9 can be obtained.Standing wave energy based on clamped beam is collected tunable filter 2 and shaken
The AC/DC modular converters for swinging the clamped beam frequency mixer 6 of signals leakiness collection of energy connect rechargeable battery 3 respectively, rechargeable battery 3 with
After the parallel connection of dc source 4, common is low-noise amplifier 5, the clamped beam frequency mixer 6 of oscillation signals leak collection of energy and local
Oscillator 7 provides energy.
Filtered as shown in Fig. 2 the standing wave energy based on clamped beam collects tunable filter 2 including LC tunable band-pass
Device, LC tunable band-stop filters 10, LC tunable band-stop filters 11,12-1, AC/DC modular converter two of AC/DC modular converters one
12-2, microwave signal input port and microwave signal output port；The duplicate LC tunable band-stops filtering of two of which structure
The frequency domain of the stopband of device 10 and 11 is identical with the frequency domain of LC variable band-pass filter passbands, forms complementary, LC variable band-pass filters
Passband frequency range outside microwave signal form standing wave, LC tunable band-stop filters 10 and LC tunable band-stop filters 11 at its both ends
Passband frequency range it is identical with standing wave signal frequency range, the standing wave at LC variable band-pass filters both ends can be collected.
As shown in figure 3, described LC variable band-pass filters and variable band-pass filter 29 are by planar inductor L1, plane
Inductance L2 and condenser type clamped beam K1, condenser type clamped beam K2 are formed.Wherein condenser type clamped beam K1 one end is believed as microwave
Number input port, the other end connection planar inductor L1, condenser type clamped beam K1 metal pad connections, planar inductor L1's is another
One end is connected with planar inductor L2, condenser type clamped beam K2, and planar inductor L2 other end ground connection, condenser type clamped beam K1's is another
One end is hanging, the output end of condenser type clamped beam K1 metal pad leads as wave filter, by controlling condenser type clamped beam K1
Electric capacity C1, C2 of access size can be adjusted with condenser type clamped beam K2 drop-down driving voltage so as to adjust the logical of wave filter
Band frequency domain.
As shown in figure 4, described LC tunable band-stop filters 10 and LC tunable band-stop filters 11 are by planar inductor L2, flat
Face inductance L1 and condenser type clamped beam K2, condenser type clamped beam K1 are formed.Wherein condenser type clamped beam K2 one end is as microwave
Signal input port, the other end connection planar inductor L2, condenser type clamped beam K2 metal pad connections ground, planar inductor L2's
The other end is connected with planar inductor L1, condenser type clamped beam K1, planar inductor L1 other end ground connection, condenser type clamped beam K1's
The other end is hanging, the output end of condenser type clamped beam K1 metal pad leads as wave filter, by controlling condenser type clamped beam
K1 and condenser type clamped beam K1 drop-down driving voltage can adjust the capacitance size of access so as to adjust the passband of wave filter frequency
Domain.
If Fig. 5 is the top view of the condenser type clamped beam in LC variable band-pass filters and LC tunable band-stop filters, Fig. 6
It is the BB ＇ faces profile of the condenser type clamped beam in LC variable band-pass filters and LC tunable band-stop filters.In silicon substrate
There are first paragraph transmission line 13 and second segment transmission line 14 in both ends, and the lower section of clamped beam is provided with a metal pad16, metal pad16
Both ends be clamped beam two pull-down electrodes 15 and pull-down electrode 17.
If Fig. 7 is the structure chart of the clamped beam frequency mixer of oscillation signals leak collection of energy, oscillation signals leak energy is received
The clamped beam frequency mixer of collection is defeated by bandpass filter 18, AC/DC modular converters 3 19, signal input port 21, mixed frequency signal
Exit port 22 and mixing structure 23 are formed, wherein mixing structure 23 is three-port network；Signal input port 21 and bandpass filtering
After the input of device 18 is connected, then the input with being mixed structure 23 is connected, and the output end connection AC/DC of bandpass filter 18 turns
Block 3 19 is changed the mold, the local oscillated signal input port 20 of mixing structure 23 connects the output end of local oscillator 7, ultimately mixing
Intermediate-freuqncy signal after the output mixing of mixed frequency signal output port 22 of structure 23.The centre frequency of bandpass filter 18 is shaken with local
The energy absorption that the frequency of signal is identical, will can be leaked by local oscillated signal process mixing structure is swung, solve leakage
The problem of local oscillated signal self-mixing, and the input signal of the frequency mixer of oscillator signal leakage collection of energy belongs to bandpass filtering
The stopband frequency domain of device 18, its frequency are in beyond the passband of bandpass filter 18, will not be directly entered by bandpass filter 18
It is mixed structure 23.
Present invention be distinguished in that：The self-powered clamped beam microwave receiver front end bag of internet of things oriented of the present invention
Tunable filter is collected containing the standing wave energy based on clamped beam.Standing wave energy based on clamped beam collects tunable filter and uses LC
Variable band-pass filter is filtered to microwave signal, LC variable band-pass filters filtering frequency range outside microwave signal can its two
End forms the passband frequency range and standing wave signal frequency range of standing wave signal, LC tunable band-stop filters 10 and LC tunable band-stop filters 11
It is identical, the standing wave at LC variable band-pass filters both ends can be collected, and DC voltage is converted into using AC/DC modular converters, most
It is stored in eventually in rechargeable battery, and the frequency domain of the duplicate LC tunable band-stop filters stopband of two structures and LC bandpass filterings
The frequency domain of device passband is identical, forms complementation, and this design also improves the electromagnetic compatible environment of circuit while filtering.
The clamped beam receiver front end that the internet of things oriented standing wave energy and release model of the present invention is collected, which includes vibration, to be believed
The clamped beam frequency mixer 6 that number release model is collected.The clamped beam frequency mixer 6 of oscillation signals leak collection of energy is in traditional mixing
In parallel bandpass filter and AC/DC modular converters are collecting the local oscillated signal energy leaked by mixing structure before structure
Amount.Bandpass filter is made up of planar inductor and condenser type clamped beam, by the drop-down for simply controlling condenser type clamped beam
Driving voltage come adjust access filter network electric capacity size, so as to adjust the passband frequency domain of wave filter so that input signal
It will not be filtered out by the wave filter, and the oscillator signal to be come by the leakage of mixing structure can reach AC/DC moduluss of conversion by wave filter
Block, and be converted to direct current signal and collect, it is stored among rechargeable battery.
The clamped beam receiver front end that the internet of things oriented standing wave energy and release model of the present invention is collected includes charging electricity
Pond 3.It is low-noise amplifier 5 after rechargeable battery 3 is in parallel with dc source 4, the clamped beam of oscillation signals leak collection of energy mixes
Frequency device 6, local oscillator 7 are powered, and realize the self-powered of active circuit.
Meet conditions above structure can be considered the present invention internet of things oriented standing wave energy and release model collect
Clamped beam receiver front end.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
- A kind of 1. clamped beam receiver front end that internet of things oriented standing wave energy and release model are collected, it is characterised in that including Microwave antenna (1), standing wave energy based on clamped beam collect tunable filter (2), rechargeable battery (3), dc source (4), low Noise amplifier (5), the clamped beam frequency mixer (6) of oscillation signals leak collection of energy, local oscillator (7), intermediate-frequency filter (8) and intermediate frequency exports (9)；Microwave antenna (1) is connected to the input that the standing wave energy based on clamped beam collects tunable filter (2) End, the standing wave energy based on clamped beam are collected tunable filter (2) output end and are connected with the input of low-noise amplifier (5), The signal input port of the clamped beam frequency mixer (6) of the output connection oscillation signals leak collection of energy of low-noise amplifier (5) (21), the output end of local oscillator (7) and the local oscillations of the clamped beam frequency mixer (6) of oscillation signals leak collection of energy are believed Number input port (20) is connected, the mixed frequency signal output port of the clamped beam frequency mixer (6) of oscillation signals leak collection of energy (22) it is connected with intermediate-frequency filter (8) input, the output end of intermediate-frequency filter obtains the accessible phase in microwave receiver rear end (9) are exported to stable intermediate frequency；Standing wave energy based on clamped beam collects tunable filter (2) and oscillation signals leak energy is received The clamped beam frequency mixer (6) of collection connects rechargeable battery (3) respectively, is low noise after rechargeable battery (3) is in parallel with dc source (4) Acoustic amplifier (5), clamped beam frequency mixer (6) and local oscillator (7) the offer energy of oscillation signals leak collection of energy are simultaneously real Existing self-powered；The described standing wave energy based on clamped beam collects tunable filter (2) and have collected the energy of standing wave and be stored in In rechargeable battery (3), electromagnetic compatible environment is improved；The clamped beam frequency mixer (6) of oscillation signals leak collection of energy have collected By energy of the local oscillated signal by mixing structure leakage and it is stored in rechargeable battery (3), avoids local oscillated signal Self-mixing, reduce DC power.
- 2. the clamped beam receiver front end that internet of things oriented standing wave energy according to claim 1 and release model are collected, It is characterized in that the standing wave energy based on clamped beam, which collects tunable filter (2), includes LC variable band-pass filters, LC adjustable bands Hinder wave filter (10), LC tunable band-stop filters (11), AC/DC modular converters one (12-1), (12- of AC/DC modular converters two 2), microwave signal input port and microwave signal output port；Described LC variable band-pass filters, LC tunable band-stop filters (10), LC tunable band-stop filters (11), AC/DC modular converters one (12-1) and AC/DC modular converters two (12-2) are all two Port network；Input connection LC tunable band-stop filters (10) input of LC variable band-pass filters；LC tunable band-pass is filtered Output end connection LC tunable band-stop filters (11) input of ripple device；The output end connection of LC tunable band-stop filters (10) The input of AC/DC modular converters (12-1), the output end connection rechargeable battery (3) of AC/DC modular converters one (12-1)；LC can Adjust the input of the output end connection AC/DC modular converters two (12-2) of bandstop filter (11), (12- of AC/DC modular converters two 2) output end also connects rechargeable battery (3)；The described standing wave energy based on clamped beam collects the microwave letter of tunable filter Microwave signal input port input number between LC variable band-pass filters and LC tunable band-stop filters (10), it is adjustable from LC Microwave signal output port output between bandpass filter and LC tunable band-stop filters (11)；Described LC tunable band-stops filter Ripple device (10) and LC tunable band-stop filters (11) structure are just the same, the frequency domain of its stopband and the frequency of LC bandpass filter passbands Domain is identical, complementation is formed, to collect the standing wave energy at LC variable band-pass filters both ends.
- 3. the clamped beam receiver front end that internet of things oriented standing wave energy according to claim 2 and release model are collected, It is characterized in that described LC variable band-pass filters and LC tunable band-stop filters include condenser type clamped beam；Work as transmission line (13) microwave signal input port, output port of the transmission line (14) as wave filter, the metal pad of condenser type clamped beam are used as (16) during connection ground, the condenser type clamped beam is equivalent to shunt capacitance；When transmission line (13) is used as microwave signal input port, electricity Output ends of the metal pad (16) of appearance formula clamped beam as wave filter, when transmission line (14) is hanging, the condenser type clamped beam is equivalent For series capacitance；The drop-down driving voltage in drop-down driving electrodes (15) and (17) by controlling condenser type clamped beam can be adjusted The size of the electric capacity of access is saved so as to adjusting the passband frequency domain of wave filter so that LC tunable band-stop filters (10) and LC adjustable bands It is identical with the standing wave signal frequency range at LC variable band-pass filters both ends to hinder the passband frequency range of wave filter (11), and two structures are complete The frequency domain of the same LC tunable band-stop filter stopbands is identical with the frequency domain of LC bandpass filter passbands, is formed complementary.
- 4. the clamped beam receiver front end that internet of things oriented standing wave energy according to claim 1 and release model are collected, It is characterized in that the clamped beam frequency mixer of described oscillation signals leak collection of energy includes bandpass filter (18), AC/DC turns Change the mold block three (19), signal input port (21), mixed frequency signal output port (22) and mixing structure (23), wherein being mixed structure (23) it is three-port network；After signal input port (21) is connected with the input of bandpass filter (18), then with being mixed structure (23) input is connected, the output end connection AC/DC modular converters three (19) of bandpass filter (18), AC/DC modular converters (19) rechargeable battery (3) is connected, local oscillated signal input port (20) the connection local oscillator (7) of mixing structure (23) Output end, the intermediate-freuqncy signal after mixed frequency signal output port (22) the output mixing of ultimately mixing structure (23)；Described vibration The clamped beam frequency mixer of signals leakiness collection of energy has added bandpass filter (18), bandpass filter before traditional mixing structure (18) centre frequency is identical with the frequency of local oscillated signal, will can be let out by local oscillated signal by mixing structure (23) The energy absorption of leakage, solve the problems, such as the local oscillated signal self-mixing of leakage, and input signal belongs to bandpass filter (18) stopband frequency domain, its frequency are in beyond the passband of bandpass filter (18), will not be by bandpass filter (18), directly Into mixing structure (23).
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| CN2524433Y (en) * | 2002-02-06 | 2002-12-04 | 信息产业部电子第五十四研究所 | Multichannel radio signal transponder |
| CN101752676A (en) * | 2008-12-05 | 2010-06-23 | 沈阳铁路信号工厂 | Transponder duplex multifrequency community antenna |
| CN103812468A (en) * | 2014-02-17 | 2014-05-21 | 东南大学 | Micro-mechanical clamped beam type pi type continuous reconfigurable microwave band-pass filter |
| CN104254958A (en) * | 2012-02-09 | 2014-12-31 | 胡玛沃克斯公司 | Energy harvesting system |
| CN104771140A (en) * | 2015-03-13 | 2015-07-15 | 江苏物联网研究发展中心 | RFID-based self-powered intelligent sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2524433Y (en) * | 2002-02-06 | 2002-12-04 | 信息产业部电子第五十四研究所 | Multichannel radio signal transponder |
| CN101752676A (en) * | 2008-12-05 | 2010-06-23 | 沈阳铁路信号工厂 | Transponder duplex multifrequency community antenna |
| CN104254958A (en) * | 2012-02-09 | 2014-12-31 | 胡玛沃克斯公司 | Energy harvesting system |
| CN103812468A (en) * | 2014-02-17 | 2014-05-21 | 东南大学 | Micro-mechanical clamped beam type pi type continuous reconfigurable microwave band-pass filter |
| CN104771140A (en) * | 2015-03-13 | 2015-07-15 | 江苏物联网研究发展中心 | RFID-based self-powered intelligent sensor |
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Application publication date: 20180109 |
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| RJ01 | Rejection of invention patent application after publication |