CN107395229A - The clamped beam receiver front end that internet of things oriented standing wave energy and excess energy are collected - Google Patents
The clamped beam receiver front end that internet of things oriented standing wave energy and excess energy are collected Download PDFInfo
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- CN107395229A CN107395229A CN201710696523.8A CN201710696523A CN107395229A CN 107395229 A CN107395229 A CN 107395229A CN 201710696523 A CN201710696523 A CN 201710696523A CN 107395229 A CN107395229 A CN 107395229A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The clamped beam receiver front end that the internet of things oriented standing wave energy and excess energy of the present invention is collected, the present invention receives microwave signal using microwave antenna, the signal received accesses the standing wave energy collection tunable filter based on clamped beam and is filtered, realize that standing wave energy is collected simultaneously, and by energy storage among battery.Then signal enters the clamped beam perseverance width device that the excess energy of Autonomous test is collected, and among excess energy is collected in battery again, and realizes permanent width output.After the constant power signal for the clamped beam perseverance width device output that the excess energy of Autonomous test is collected enters low-noise amplifier and is exaggerated, the frequency mixer with local oscillator is sequentially entered, intermediate-frequency filter realizes that intermediate frequency exports.Store energy battery it is in parallel with dc source after for active circuit power supply.This structure can collect standing wave energy and unnecessary energy, improve electromagnetic compatible environment, protect low-noise amplifier, improve the stability of system.
Description
Technical field
The clamped beam receiver front end that the present invention proposes a kind of internet of things oriented standing wave energy and excess energy is collected, category
In microelectromechanical systems (MEMS) technical field.
Background technology
In Internet of Things communication system, microwave receiver front end is mainly used to receive and pre-processes the letter that is received by antenna
Number, generally comprise microwave antenna, microwave filter, low-noise amplifier, frequency mixer, local oscillator and intermediate-frequency filter.So
And the receiver designed based on traditional reception technique has many deficiencies, such as the work(that low-noise amplifier is fragile and larger
Consumption etc., at the same time, the transmitting-receiving subassembly of microwave front-end has very strong standing wave electromagnetic interference, is brought to processing of circuit bigger
Trouble.In recent years, with the fast development of MEMS technology, and MEMS energy collection technologies and MEMS filter technology are carried out
In-depth study so that internet of things oriented standing wave energy and the clamped beam receiver front end of excess energy collection can with what is realized
Energy.
The content of the invention
Technical problem：Collected it is an object of the invention to provide a kind of internet of things oriented standing wave energy and excess energy 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 Autonomous test
The clamped beam perseverance width device collected of excess energy, collect excess energy again, and realize that output signal is constant by Autonomous test, together
Shi Wuxu changes the direct current biasing point of rear end low-noise amplifier so that the AGC moulds of complexity are no longer needed in low-noise amplifier
Block, improve the linearity of low-noise amplifier, microwave antenna it is sudden receive super large microwave signal when, can be effectively
Play a part of protecting low-noise amplifier.The clamped beam perseverance width device that the excess energy of Autonomous test is collected exports constant microwave letter
Number enter low-noise amplifier amplification after, sequentially enter frequency mixer, intermediate-frequency filter, finally realize intermediate frequency export.Received above
Two kinds of energy of collection are stored in rechargeable battery after being converted into DC voltage by AC/DC modular converters simultaneously, rechargeable battery with it is straight
It is connected after stream power sources in parallel with active circuit, 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 unnecessary
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 excess energy are collected
End includes:Microwave antenna, the standing wave energy based on clamped beam collect tunable filter, rechargeable battery, the excess energy of Autonomous test
Clamped beam perseverance width device, low-noise amplifier, frequency mixer, local oscillator, intermediate-frequency filter, the dc source of collection.
Microwave antenna, for receiving microwave signal.
Standing wave energy based on clamped beam collects tunable filter, is by LC variable band-pass filters, the first LC adjustable bands
It is defeated to hinder wave filter, the 2nd LC tunable band-stop filters, the first AC/DC modular converters, the 2nd AC/DC modular converters, microwave signal
Inbound port and microwave signal output port are formed, wherein the first LC tunable band-stop filters and the 2nd LC tunable band-stop filter knots
Structure is just the same, and the frequency domain of its stopband is identical with the frequency domain of LC bandpass filter passbands, forms complementary, the first LC tunable band-stops filter
The passband frequency domain of ripple device and the 2nd LC tunable band-stop filters is identical with the frequency domain of standing wave signal, can collect the filter of LC tunable band-pass
The standing wave energy at ripple device both ends, and can realize that filter filtering frequency range is adjustable.
Rechargeable battery, the standing wave energy based on clamped beam is collected to the AC/DC modular converters and Autonomous test of tunable filter
The obtained DC voltage energy storage of AC/DC modular converters of clamped beam perseverance width device collected of excess energy among battery,
It is simultaneously in parallel with dc source, realize self-powered to active circuit.
The clamped beam perseverance width device that the excess energy of Autonomous test is collected, is by 4 coplanar waveguide structures (CPW), 2 clamped beams
Formed with 4 pole plates.The input of main signal line and ground wire form CPW as signal input part, and the first clamped beam is across CPW
Two ground wires between main signal line vacantly formed fixed beam structure, have two electricity between CPW signal wire and ground wire respectively
Hold pole plate to be located at below clamped beam, capacitor plate and the first clamped beam form capacitance structure；In the middle part of main signal line, the second clamped beam
Clamped coupled beams, which are formed, with anchor area is suspended from formation coupled capacitor structure above main signal line, anchor area and the ground wire structure of clamped coupled beams
Into the transmission line CPW of two coupling branch roads, clamped coupled beams are the signal wire of coupling branch road, clamped coupled beams lower section anchor area and master
There are two drop-down pole plates between signal wire respectively, CPW connects AC/DC modular converters；The output end of main signal line forms CPW with ground wire
As signal output part.The clamped beam perseverance width device that the excess energy of Autonomous test is collected is the microwave signal process of input into fixed width
The signal output of degree, late-class circuit is effectively protected, while the direct current biasing point of rear end low-noise amplifier need not be changed, made
Obtaining no longer needs the AGC modules of complexity in low-noise amplifier, improve the linearity of low-noise amplifier.
Low-noise amplifier, amplifies the microwave signal of the stabilization of permanent width device output, and accesses frequency mixer.
Frequency mixer, by being mixed with local oscillated signal, microwave signal is transformed to intermediate frequency microwave signal.
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 excess energy of the present invention are collected
Tunable filter is collected in the standing wave energy of clamped beam.The wave filter only needs the drop-down of simple control condenser type clamped beam to drive
The size of dynamic 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 just the same
LC tunable band-stop filter stopbands frequency domain it is identical with the frequency domain of LC bandpass filter passbands, form complementary, LC tunable band-pass
Microwave signal outside the passband frequency range of wave filter forms standing wave at its both ends, and the first LC tunable band-stop filters and the 2nd LC are adjustable
The passband frequency range of bandstop filter is identical with standing wave signal frequency range, can collect the standing wave at LC variable band-pass filters both ends, 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 excess energy of the present invention are collected includes self-test
The clamped beam perseverance width device that the excess energy of survey is collected.Described permanent width device is only needed under additional direct voltage drive, and control is solid
Degree of coupling of the strutbeam to different input power signal, you can ensure the signal of output constant amplitude, while the signal quilt coupled
AC/DC modules are converted to DC voltage, are ultimately stored in rechargeable battery.When microwave antenna receives the signal of super large, from
Signal output of the clamped beam perseverance width device that the excess energy of detection is collected the microwave signal process of input into fixed amplitude, effectively
Protect rear class amplifier circuit in low noise, improve the anti-of microwave receiver front end and burn level, in addition, without change after
Hold the direct current biasing point of low-noise amplifier so that the AGC modules of complexity are no longer needed in low-noise amplifier, improve low noise
The linearity of acoustic amplifier；
3. rechargeable battery is in parallel with dc source, self-powered is realized to active circuit.
Brief description of the drawings:
The principle for the clamped beam receiver front end that Fig. 1 collects for the internet of things oriented standing wave energy and excess energy of the present invention
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.
Fig. 4 is the schematic diagram of the first LC tunable band-stop filters and the 2nd LC tunable band-stop filters.
Fig. 5 is in LC variable band-pass filters, the first LC tunable band-stop filters and the 2nd LC tunable band-stop filters
The top view of condenser type clamped beam.
Fig. 6 is in LC variable band-pass filters, the first LC tunable band-stop filters and the 2nd LC tunable band-stop filters
BB ' the faces profile of condenser type clamped beam.
Fig. 7 is the top view for the clamped beam perseverance width device that the excess energy of Autonomous test is collected.
Fig. 8 is the profile in the clamped beam perseverance width device AA ' directions that the excess energy of Autonomous test is collected.
Fig. 9 is the profile in the clamped beam perseverance width device BB ' directions that the excess energy of Autonomous test is collected.
The theory diagram for the clamped beam receiver front end that internet of things oriented standing wave energy and excess energy are collected includes：It is micro-
Wave antenna 1, the standing wave energy collection tunable filter 2 based on clamped beam, rechargeable battery 3, the excess energy collection of Autonomous test
Clamped beam perseverance width device 4, low-noise amplifier 5, frequency mixer 6, local oscillator 7, intermediate-frequency filter 8, intermediate frequency output 9, direct current
Source 28.Standing wave energy based on clamped beam collects tunable filter 2 by LC variable band-pass filters, the filtering of the first LC tunable band-stops
Device 10, the 2nd LC tunable band-stop filters 11, the first AC/DC modular converter 12-1, the 2nd AC/DC modular converter 12-2, microwave
Signal input port, microwave signal output port are formed；LC variable band-pass filters, the first LC tunable band-stop filters 10 and
Two LC tunable band-stop filters 11 are formed by planar inductor and condenser type clamped beam, and condenser type clamped beam is by first paragraph transmission line
13rd, second segment transmission line 14, metal pad16, the first pull-down electrode 15, the second pull-down electrode 17 are formed.More complementary energy of Autonomous test
The clamped beam perseverance width device 4 collected is measured by main signal line 18, the first ground wire 19-1, the second ground wire 19-2, the 3rd ground wire 19-3, the 4th
Ground wire 19-4, the first clamped beam 20, the first capacitor plate 21-1, the second capacitor plate 21-2, the second clamped beam 22, the first anchor area
23-1, the second anchor area 23-2, the first drop-down pole plate 24-1, the second drop-down pole plate 24-2, Si3N4Dielectric layer 25-1, Si3N4Medium
Layer 25-2, SiO2 layers 26 and AC/DC modular converters 27 are formed.
Embodiment
The specific implementation for the clamped beam receiver front end that the internet of things oriented standing wave energy and excess energy of the present invention is collected
Scheme is as follows：
The present invention proposes that internet of things oriented standing wave energy and the clamped beam receiver front end of excess energy collection include：Microwave
Antenna 1, the standing wave energy based on clamped beam collect tunable filter 2, rechargeable battery 3, and the excess energy collection of Autonomous test is consolidated
Strutbeam perseverance width device 4, low-noise amplifier 5, frequency mixer 6, local oscillator 7, intermediate-frequency filter 8, intermediate frequency output 9, dc source
28.Standing wave energy based on clamped beam collects tunable filter 2 by LC variable band-pass filters, the first LC tunable band-stop filters
10, the 2nd LC tunable band-stop filters 11, the first AC/DC modular converter 12-1, the 2nd AC/DC modular converter 12-2, microwave letter
Number input port, microwave signal output port are formed；LC variable band-pass filters, the first LC tunable band-stop filters 10 and second
LC tunable band-stop filters 11 are formed by planar inductor and condenser type clamped beam, and condenser type clamped beam is by first paragraph transmission line
13rd, second segment transmission line 14, metal pad16, the first pull-down electrode 15, the second pull-down electrode 17 are formed.More complementary energy of Autonomous test
The clamped beam perseverance width device 4 collected is measured by main signal line 18, the first ground wire 19-1, the second ground wire 19-2, the 3rd ground wire 19-3, the 4th
Ground wire 19-4, the first clamped beam 20, the first capacitor plate 21-1, the second capacitor plate 21-2, the second clamped beam 22, the first anchor area
23-1, the second anchor area 23-2, the first drop-down pole plate 24-1, the second drop-down pole plate 24-2, Si3N4Dielectric layer 25-1, Si3N4Medium
Layer 25-2, SiO2 layers 26 and AC/DC modular converters 27 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 clamped beam perseverance width device 4 that the excess energy of the Autonomous test of next stage is collected, Autonomous test
Excess energy collect clamped beam perseverance width device 4 realize signal power size by measuring capacitance size between clamped beam and pole plate
Detection, and pass through coupled beams couple different proportion input signal so that export the power invariability of microwave signal.Firm power
Microwave signal access fixed gain low-noise amplifier 5, then exaggerated microwave signal passes through frequency mixer 6, makes this micro-
Ripple signal frequency conversion, after the filtering of intermediate-frequency filter 8, can obtain manageable intermediate-freuqncy signal 9 to intermediate frequency.Based on clamped beam
Standing wave energy collect the AC/DC modular converters of the clamped beam perseverance width device 4 that the excess energy of tunable filter 2 and Autonomous test is collected
Rechargeable battery 3 is connected respectively, after rechargeable battery 3 is in parallel with dc source 28, common is low-noise amplifier 5, frequency mixer 6,
Ground 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, the first LC tunable band-stop filters 10, the 2nd LC tunable band-stop filters 11, the first AC/DC modular converters 12-1, second
AC/DC modular converters 12-2, microwave signal input port and microwave signal output port；Two of which structure duplicate
The frequency domain of one LC tunable band-stop filters 10 and the stopband of the 2nd LC tunable band-stop filters 11 and LC variable band-pass filter passbands
Frequency domain it is identical, formed complementary, the microwave signal outside the passband frequency range of LC variable band-pass filters forms standing wave at its both ends, the
The passband frequency range of one LC tunable band-stop filters 10 and the 2nd LC tunable band-stop filters 11 is identical with standing wave signal frequency range, can be with
Collect the standing wave at LC variable band-pass filters both ends.
As shown in figure 3, described LC variable band-pass filters are by planar inductor L1, planar inductor L2 and condenser type clamped beam
K1, condenser type clamped beam K2 are formed.Wherein condenser type clamped beam K1 one end is as microwave signal input port, other end connection
Planar inductor L1, condenser type clamped beam K1 metal pad connections ground, planar inductor the L1 other end and planar inductor L2, electric capacity
Formula clamped beam K2 is connected, and planar inductor L2 other end ground connection, the condenser type clamped beam K1 other end is hanging, condenser type clamped beam
Output end of the K1 metal pad leads as wave filter, by controlling under condenser type clamped beam K1 and condenser type clamped beam K2
Driving voltage is drawn to adjust electric capacity C1, C2 of access size so as to adjusting the passband frequency domain of wave filter.
As shown in figure 4, the first described LC tunable band-stop filters 10 and the 2nd LC tunable band-stop filters 11 are by plane
Inductance L2, planar inductor L1 and condenser type clamped beam K2, condenser type clamped beam K1 are formed.Wherein condenser type clamped beam K2 one end
As microwave signal input port, the other end connection planar inductor L2, condenser type clamped beam K2 metal pad connections ground, plane
The inductance L2 other end is connected with planar inductor L1, condenser type clamped beam K1, planar inductor L1 other end ground connection, and condenser type is solid
The strutbeam K1 other end is hanging, the output end of condenser type clamped beam K1 metal pad leads as wave filter, by controlling electric capacity
Formula clamped beam K1 and condenser type clamped beam K1 drop-down driving voltage can adjust the capacitance size of access so as to adjust wave filter
Passband 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.
Fig. 7, Fig. 8 and Fig. 9 are the schematic diagrames for the clamped beam perseverance width device that the excess energy of Autonomous test is collected, main signal line 18
Input 18-1 and the first ground wire 19-1, the second ground wire 19-2 form CPW, and the first clamped beam 20 is across on this CPW the first ground
On line 19-1 and the second ground wire 19-2, the first capacitor plate 21-1 is located at first between the ground wire 19-1 of main signal line 18 and first
The underface of clamped beam 20, the second capacitor plate 21-2 are located at the first clamped beam between the ground wire 19-2 of main signal line 18 and second
20 underface, this pair of capacitor plates are symmetrical on main signal line 18, on the signal wire immediately below the first clamped beam 20 and
One layer of Si3N4 dielectric layers 25-1 is also covered with two capacitor plates；Second clamped beam 22 is suspended from the top of main signal line 18 and the
One anchor area 23-1 and the second anchor area 23-2, which is connected, forms fixed beam structure, and the first drop-down pole plate 24-1 is located at main signal line 18 and the
The underface of the second clamped beam 22 between one anchor area 23-1, the second drop-down pole plate 24-2 are located at the anchor area of main signal line 18 and second
The underface of the second clamped beam 22 between 23-2, two drop-down pole plates are symmetrical on main signal line 18, and pull down pole first
One layer of Si3N4 medium is also covered with signal wire immediately below plate 24-1, the second drop-down pole plate 24-2 and the second clamped beam 22
Layer 25-2, the first anchor area 23-1 and the second anchor area 23-2 forms CPW, the second anchor area 23-2 connection AC/DC modular converters with ground wire
27, the output end 18-2 and the 3rd ground wire 19-3, the 4th ground wire 19-4 of main signal line 18 form CPW as output end.
The self-powered clamped beam microwave receiver front end of internet of things oriented of the present invention includes the standing wave energy based on clamped beam
Amount collects tunable filter.Standing wave energy based on clamped beam collects tunable filter using LC variable band-pass filters to microwave
Signal is filtered, LC variable band-pass filters filtering frequency range outside microwave signal can its both ends formed standing wave signal, first
The passband frequency range of LC tunable band-stop filters and the 2nd LC tunable band-stop filters is identical with standing wave signal frequency range, can collect LC
The standing wave at variable band-pass filter both ends, and DC voltage is converted into using AC/DC modular converters, it is ultimately stored on rechargeable battery
In, and the frequency domain phase of the frequency domain and LC bandpass filter passbands of the duplicate LC tunable band-stop filters stopband of two structures
Together, complementation is formed, 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 excess energy of the present invention are collected includes Autonomous test
Excess energy collect clamped beam perseverance width device.The clamped beam perseverance width device that the excess energy of Autonomous test is collected employs CPW transmission
Line and fixed beam structure.Autonomous test part, electric capacity is formed using the second clamped beam and pole plate, because input signal is to clamped beam
Electrostatic force causes beam to produce drop-down displacement, and the inspection of input signal power size is realized by surveying capacitance size between beam and pole plate
Survey, input signal is lost low；After completing signal detection, under additional DC voltage control, the second clamped beam is set to produce drop-down
Displacement, will be by clamped beam for the input signal of different capacity so as to change the coupled capacitor between the second clamped beam and signal wire
It is coupled out in varing proportions, to ensure that the permanent width of signal exports, meanwhile, the energy being coupled out is collected by AC/DC modular converters
Get up, and store in the battery；When microwave antenna receives the signal of super large, permanent width device the microwave signal process of input into
The signal output of fixed amplitude, rear class amplifier circuit in low noise is effectively protected, improves the anti-of microwave receiver front end
Level is burnt, in addition, the direct current biasing point of rear end low-noise amplifier need not be changed so that no longer needed in low-noise amplifier
Complicated AGC modules, improve the linearity of low-noise amplifier.
The clamped beam receiver front end that the internet of things oriented standing wave energy and excess energy 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 28, frequency mixer 6, local oscillator 7 is powered, and is realized
The self-powered of active circuit.
Meet conditions above structure can be considered the present invention internet of things oriented standing wave energy and excess energy collect
Clamped beam receiver front end.
Claims (4)
1. the clamped beam receiver front end that internet of things oriented standing wave energy and excess energy are collected, it is characterised in that by microwave day
Line (1), the standing wave energy based on clamped beam are collected tunable filter (2), rechargeable battery (3), the excess energy of Autonomous test and collected
Clamped beam perseverance width device (4), low-noise amplifier (5), frequency mixer (6), local oscillator (7), intermediate-frequency filter (8), intermediate frequency
Export (9) and dc source (28) is formed；The annexation of concrete structure is as follows：Microwave antenna (1) is connected to based on clamped beam
Standing wave energy collect the input of tunable filter (2), standing wave energy based on clamped beam collects tunable filter (2) output
The input for the clamped beam perseverance width device (4) collected with the excess energy of Autonomous test is held to be connected, the excess energy of Autonomous test is collected
The output end of clamped beam perseverance width device (4) be connected with the input of low-noise amplifier (5), low-noise amplifier (5) it is defeated
Go out to hold rear class to be sequentially connected the frequency mixer (6) of (7) with local oscillator, intermediate-frequency filter (8), finally obtain microwave receiving
The accessible metastable intermediate-freuqncy signal (9) in machine rear end；Standing wave energy based on clamped beam collects tunable filter (2)
The AC/DC modular converters (27) for the clamped beam perseverance width device (4) that the excess energy of AC/DC modular converters and Autonomous test is collected are respectively
Connect rechargeable battery (3)；After rechargeable battery (3) is in parallel with dc source (28), be low-noise amplifier (5), frequency mixer (6) and
Local oscillator (7) provides energy and realizes self-powered；The clamped beam perseverance width device (4) that the excess energy of Autonomous test is collected is collected more
Complementary energy is simultaneously stored in rechargeable battery (3), is effectively protected the low-noise amplifier (5) of rear class so that low noise amplification
The AGC modules of complexity are no longer needed in device (5), improve the linearity of low-noise amplifier.
2. the clamped beam receiver front end that internet of things oriented standing wave energy according to claim 1 and excess energy are collected,
It is characterized in that：The clamped beam receiver front end that internet of things oriented standing wave energy and excess energy are collected has based on clamped beam
Standing wave energy collects tunable filter (2)；It is by LC adjustable bands that the standing wave energy based on clamped beam, which collects tunable filter,
Bandpass filter, the first LC tunable band-stop filters (10), the 2nd LC tunable band-stop filters (11), the first AC/DC modular converters
(12-1), the 2nd AC/DC modular converters (12-2), microwave signal input port and microwave signal output port are formed；Described
LC variable band-pass filters, the first LC tunable band-stop filters (10), the 2nd LC tunable band-stop filters (11), the first AC/DC
Modular converter (12-1) and the 2nd AC/DC modular converters (12-2) are all two-port network；The input of LC variable band-pass filters
The first LC tunable band-stop filters (10) input of end connection；The output end of LC variable band-pass filters connects the 2nd LC adjustable bands
Hinder wave filter (11) input；The output end of first LC tunable band-stop filters (10) connects the first AC/DC modular converters (12-
1) input, the output end connection rechargeable battery (3) of the first AC/DC modular converters (12-1)；2nd LC tunable band-stops filter
The output end of device (11) connects the input of the 2nd AC/DC modular converters (12-2), the 2nd AC/DC modular converters (12-2) it is defeated
Go out end connection rechargeable battery (3)；The microwave signal that the described standing wave energy based on clamped beam collects tunable filter can from LC
Microwave signal input port input between adjusted band-pass filter and the first LC tunable band-stop filters (10), from LC tunable band-pass
Microwave signal output port output between wave filter and the 2nd LC tunable band-stop filters (11)；The first described LC adjustable bands
Hinder wave filter (10) and the 2nd LC tunable band-stop filters (11) structure is just the same, frequency domain and the LC bandpass filters of its stopband
The frequency domain of passband is identical, complementation is formed, to collect the standing wave energy at LC variable band-pass filters both ends.
3. the standing wave energy according to claim 2 based on clamped beam collects tunable filter, it is characterised in that：Described
LC variable band-pass filters and LC tunable band-stop filters include condenser type clamped beam；When transmission line (13) is defeated as microwave signal
Inbound port, output port of the transmission line (14) as wave filter, condenser type clamped beam metal pad (16) connections ground when, the electricity
Appearance formula clamped beam is equivalent to shunt capacitance；When transmission line (13) is used as microwave signal input port, the metal of condenser type clamped beam
Output ends of the pad (16) as wave filter, when transmission line (14) is hanging, the condenser type clamped beam is equivalent to series capacitance；Pass through
The drop-down driving voltage in the drop-down driving electrodes of condenser type clamped beam is controlled to adjust the size of the electric capacity of access so as to adjusting
Save the passband frequency domain of wave filter so that the first LC tunable band-stop filters (10) and the 2nd LC tunable band-stop filters (11) lead to
It is identical with the standing wave signal frequency range at LC variable band-pass filters both ends with frequency range, and the duplicate LC tunable band-stops of two structures
The frequency domain of filter stop bend 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 excess energy are collected,
It is characterized in that：The clamped beam receiver front end that internet of things oriented standing wave energy and excess energy are collected has the unnecessary of Autonomous test
The clamped beam perseverance width device (4) of collection of energy；The clamped beam perseverance width device (4) that the excess energy of Autonomous test is collected is by main signal line
(18), the first ground wire (19-1), the second ground wire (19-2), the 3rd ground wire (19-3), the 4th ground wire (19-4), the first clamped beam
(20), the first capacitor plate (21-1), the second capacitor plate (21-2), the second clamped beam (22), the first anchor area (23-1), second
Anchor area (23-2), the first drop-down pole plate (24-1), the second drop-down pole plate (24-2) are formed；Signal is defeated from main signal line (18)
Enter end (18-1) input, input (18-1) and the first ground wire (19-1), the second ground wire (19-2) of main signal line (18) are formed
CPW, the first clamped beam (20) is across on this CPW the first ground wire (19-1) and the second ground wire (19-2), the first capacitor plate
(21-1) is located at the underface of the first clamped beam (20) between main signal line (18) and the first ground wire (19-1), the second capacitance pole
Plate (21-2) is located at the underface of the first clamped beam (20) between main signal line (18) and the second ground wire (19-2), this pair of electricity
Hold pole plate on main signal line (18) symmetrically, on the main signal line immediately below the first clamped beam (20) and on two capacitor plates
It is also covered with one layer of Si3N4Dielectric layer；Second clamped beam (22) is suspended from above main signal line (18) and the first anchor area (23-1) and the
Two anchor areas (23-2), which are connected, forms fixed beam structure, and the first drop-down pole plate (24-1) is located at main signal line (18) and the first anchor area
The underface of the second clamped beam (22) between (23-1), the second drop-down pole plate (24-2) are located at main signal line (18) and the second anchor
The underface of the second clamped beam (22) between area (23-2), two drop-down pole plates on main signal line (18) symmetrically, and the
Also covered on main signal line immediately below one drop-down pole plate (24-1), the second drop-down pole plate (24-2) and the second clamped beam (22)
One layer of Si3N4Dielectric layer, the first anchor area (23-1) and the second anchor area (23-2) form CPW with ground wire, and the second anchor area (23-2) is even
Connect AC/DC modular converters (27), output end (18-2) and the 3rd ground wire (19-3), the 4th ground wire (19-4) of main signal line (18)
CPW is formed as output end；When microwave antenna receives the signal of super large, the clamped beam that the excess energy of Autonomous test is collected is permanent
The microwave signal process of input into the signal output of fixed amplitude, is effectively protected rear class low-noise amplifier by width device (4)
(5), improve the anti-of microwave receiver front end and burn level, in addition, the direct current that need not change rear class low-noise amplifier (5) is inclined
Put a little so that the AGC modules of complexity are no longer needed in low-noise amplifier (5), improve the linear of low-noise amplifier (5)
Degree, meanwhile, the energy being coupled out is collected by AC/DC modular converters (27), and stores in the battery.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113336183A (en) * | 2021-06-04 | 2021-09-03 | 东南大学 | Electrostatic discharge protection and energy storage structure of microwave integrated circuit clamped beam |
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Application publication date: 20171124 |