CN110266331A - A kind of airborne antenna reception spectrum test filtering unit - Google Patents
A kind of airborne antenna reception spectrum test filtering unit Download PDFInfo
- Publication number
- CN110266331A CN110266331A CN201910551853.7A CN201910551853A CN110266331A CN 110266331 A CN110266331 A CN 110266331A CN 201910551853 A CN201910551853 A CN 201910551853A CN 110266331 A CN110266331 A CN 110266331A
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- China
- Prior art keywords
- frequency
- pass filter
- airborne
- antenna
- radio
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0202—Two or more dimensional filters; Filters for complex signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0219—Compensation of undesirable effects, e.g. quantisation noise, overflow
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
-
- 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
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
-
- 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
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Abstract
The invention belongs to Aircraft electro-technical fields, spectrum test filtering unit is received more particularly to a kind of airborne antenna, the filtering unit is connected between antenna and frequency spectrograph, which constituted with the corresponding radio-frequency terminals of multiple airborne equipment frequency ranges, low-pass filter, high-pass filter and RF physical switch；Wherein RF physical switch is used for the switching of the corresponding high and low pass filter of same airborne equipment；Radio-frequency terminals are mainly used for connection and matching with airborne antenna and frequency spectrograph；When extraneous fundamental frequency is lower than tested airborne equipment frequency range, RF physical switching gate high-pass filter, it tests in tested airborne equipment band and with outer high frequency section frequency spectrum, when extraneous fundamental frequency is higher than tested airborne equipment frequency range, RF physical switching gate low-pass filter is tested in tested airborne equipment band and with outer low frequency part frequency spectrum.The present invention reduces the use of connector, avoids the frequently troublesome operation of replacement test device and reduce device damage, improve test accuracy.
Description
Technical field
The invention belongs to Aircraft electro-technical fields, and in particular to a kind of airborne antenna reception spectrum test filtering unit, it is main
It is used for antenna port and receives spectrum test, be a kind of electromagnetic compatibility test equipment.
Background technique
China Patent Publication No. CN106252796A, publication date on December 21st, 2016, the entitled filter of invention.It should
Application case discloses the design method of filter, including groove body, cover board and tuning plug, and cover plate lid is formed together in the opening of groove body
Chamber, cover board are equipped with the mounting hole for installing tuning plug, and tuning plug penetrates mounting hole and cover board is fixed, and protrudes into the chamber
Room, cover board is additionally provided with fastener and the fastening protrusion that outwardly protrudes clamps and penetrates the tuning plug of mounting hole, tuning plug thus with lid
Plate is fixed.The cover board of the filter of the invention is equipped with fastening protrusion and fastener, after tuning plug penetrates mounting hole, fastener
With fastening male cooperation locking, to clamp tuning plug, tuning plug and cover board are fixed using such structure and mode, is not passed through
The mode being threadedly engaged so not needing the tapping on the hole wall of mounting hole, therefore will not generate metal fragment and fall into filtering
In the chamber of device, the performance of filter is to more preferably.The shortcoming of the invention is not to be suitable for the place of particular demands.
China Patent Publication No. CN207834543U, publication date on September 7th, 2018, a kind of entitled filter of utility model
Wave device.This application discloses a kind of filter, including filter main body and the PIN connector for being mounted on filter main body two sides,
The filter main body is equipped with medium substrate frame and multiple resonators, covers upper Double-protection for one section on the outside of PIN connector
Cover realizes filter in the ease of use of specific occasion.Shortcoming be it is stronger using limitation, be not suitable for airborne equipment
Test platform.
Above-mentioned two related patents disadvantages are applicability deficiency.Since airborne antenna is more, application scenarios are also not to the utmost
It is identical, it is selected in test according to application scenarios and configuration filter is often time-consuming and laborious, process is tedious, it is therefore necessary to design
A kind of dedicated airborne antenna reception spectrum test filtering unit.Above-mentioned two inventions improve the performance of filter and in particular place
Convenience, but can not be switched freely according to the working frequency range of airborne equipment, not can guarantee the particular demands of certain equipment, because
This, is unable to satisfy the demand that airborne antenna receives spectrum test in terms of applicability.In the prior art commonly use test macro by antenna,
Filter, attenuator, connecting cable and frequency spectrograph composition.The system can generate non-linear when input signal exceeds linearly interval
Product influences measuring accuracy.
Summary of the invention
The technical issues of solution
The present invention overcomes the disadvantages of the prior art, provides a kind of airborne antenna reception spectrum test filtering unit.This
Alternative existing means of testing is invented, solves to cause test macro to generate asking for nonlinear response since extraneous transmitting signal is excessive
Topic.Ensure that antenna port frequency spectrum is accurately true, provides authentic data for electromagnetic interference troubleshooting and fining spectrum management.
Technical solution
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of airborne antenna reception spectrum test filtering unit, which is with the corresponding radio-frequency head of multiple airborne equipment frequency ranges
Son, low-pass filter, high-pass filter and RF physical switch are constituted, which is connected between antenna and frequency spectrograph.
For the demand in the test of antenna received spectrum for analysis of electromagnetic interference and fining spectrum management, the present invention point
Test suite is constructed not in terms of following five:
1. being opened with the corresponding radio-frequency terminals of multiple airborne equipment frequency ranges, low-pass filter, high-pass filter and RF physical
The component constituted is closed, is mainly used for antenna port and receives spectrum test, be connected between antenna and frequency spectrograph；
2. using radio frequency multiport form, low-pass filter, high-pass filter are integrated；
3. being switched over using RF physical switch to the corresponding high and low pass filter of each airborne equipment；
4. drawing calibrating terminal and signal transmission interface using Signal separator for using the antenna of non-radio frequencies terminal；
5. providing radio frequency testing port using blocking power splitter for the antenna powered simultaneously using radio-frequency terminals.
Specifically, the present invention is with the corresponding radio-frequency terminals of multiple airborne equipment frequency ranges, low-pass filter, high-pass filtering
The component that device and RF physical switch are constituted, is connected between antenna and frequency spectrograph, convenient for accurately measuring humorous clutter.When extraneous base
When wave frequency rate is lower than tested airborne equipment frequency range, RF physical switching gate high-pass filter is tested in tested airborne equipment band
And with outer high frequency section frequency spectrum, when extraneous fundamental frequency is higher than tested airborne equipment frequency range, RF physical switching gate low pass
Filter is tested in tested airborne equipment band and with outer low frequency part frequency spectrum.Wherein RF physical switch airborne is set for same
The switching of standby corresponding high and low pass filter.Radio-frequency terminals are mainly used for connection and matching with airborne antenna and frequency spectrograph.
Radio-frequency terminals input terminal use multiport form and the identical jack radio-frequency terminals of airborne cable, including TNC type,
N-type, L12 type SMA type etc..Output terminal for the ease of with the connection 1GHz or less of frequency spectrograph use N-type jack radio-frequency terminals,
1GHz or more uses SMA type jack radio-frequency terminals.
Corresponding two filters of each antenna, pass band start from the upper limiting frequency of tested antenna, test frequency
Rate covers tested antenna band and out-of-band low frequency band, and high-pass filter passband starts from the lower frequency limit of tested antenna, test
Frequency covers tested antenna band and out-of-band high-frequency band.
RF physical switch uses double-pole double throw RF switch, synchronizes switching to the input/output terminal of filter.
For using the antenna of non-radio frequencies terminal, calibrating terminal and signal transmission interface are drawn using Signal separator.For
The antenna powered simultaneously using radio-frequency terminals provides radio frequency testing port and airborne equipment connectivity port using blocking power splitter.
A kind of device for carrying above-mentioned airborne antenna and receiving spectrum test filtering unit, the device is by antenna input panel, survey
Output slab, low-pass filter and high-pass filter integrated panel, RF physical switch and shell is tried to form；The antenna input
Panel is provided with radio-frequency terminals input port, and test output slab is provided with radio-frequency terminals output port, and antenna input panel is surveyed
It is connected between examination output slab and low-pass filter and high-pass filter integrated panel by cable, antenna input panel and low pass
RF physical switch is provided between filter and high-pass filter integrated panel, shell is for encapsulating said panel.
The shell uses aluminium alloy structure, and configures shell binding post, it is ensured that filter ground connection is good, and guarantee was tested
Interference signal will not be introduced in journey.
Beneficial manner technical effect
Compared with prior art, advantages of the present invention includes the following aspects:
1. being inhibited using high pass, low-pass filter to external world's transmitting fundamental wave, it is non-linear to reduce test macro, improves
Test accuracy；
2. can avoid the nonlinearity product and reduce system that attenuator generates compared with using attenuator to carry out fundamental frequency suppression
The advantages of system sensitivity；
3. switching over using physical switch to high and low pass filter, the cumbersome behaviour of frequently replacement test device is avoided
Make and reduce device damage；
4. input, output end be respectively adopted match with airborne antenna and frequency spectrograph match radio-frequency terminals, reduce connector
Use；
5. whole device is configured using multiport, configured compared to single port, can substantially reduce RF switch quantity and at
This；
6. radiation-emitting and nonlinear response caused by avoiding active device are switched over filter using physical switch.
7. airborne filter needed for pair antenna spectrum measurement is combined, device allocative efficiency is improved.
Detailed description of the invention
Fig. 1 is that airborne antenna receives spectrum test filtering unit input terminal prevention at radio-frequency port,
Fig. 2 is that airborne antenna receives spectrum test filtering unit output end prevention at radio-frequency port,
Fig. 3 is that airborne antenna receives spectrum filters internal arrangement.
Wherein, 1- radio-frequency terminals, 2- low-pass filter, 3- high-pass filter, 4- RF physical switch.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
Since airborne antenna is more, application scenarios are also not quite similar, and select and configure according to application scenarios in test to filter
Wave device is often time-consuming and laborious, and process is tedious.Meanwhile different airborne equipment spectral spans are big, need for equipment different operating frequency range
Corresponding connector and transmission cable are chosen, guarantee the impedance matching of entire TCH test channel and reduces energy loss.
The input terminal that a kind of airborne antenna of the present invention receives spectrum test filtering unit is as shown in Figure 1.This panel be with it is airborne
The prevention at radio-frequency port of device antenna connection.According to the difference of the working frequency range of airborne equipment and interface type, the best damage of design matching
Minimum corresponding interface is consumed, solves the problems, such as distorted signals that test macro is generated in input terminal and non-linear corresponding.Input terminal
Using multiport form and the identical jack radio-frequency terminals of airborne cable, including TNC type, N-type, L12 type SMA type etc..For having
Source antenna or needs normally connect the antenna that could be worked normally with airborne equipment, which is provided with special purpose interface and sets with airborne
It is standby to be connected.When specifically used, in the output port of airborne equipment, its connecting cable between antenna disconnected, antenna is exported
It is docked with the corresponding interface of input terminal of the present invention at end.The input terminal of test signal is grabbed as test macro.
Output end of the invention is as shown in Figure 2.This panel is surveyed with frequency domains such as survey equipment, including receiver, frequency spectrograph
Try equipment；The prevention at radio-frequency port of connection designs the corresponding interface according to the difference of the working frequency range of test equipment and interface type, and one
As be universal joint N-type or SMA type joint, 1GHz or less use N-type jack radio-frequency terminals, 1GHz or more use SMA type jack
Radio-frequency terminals.Conversion and amendment when the panel interface designs between input end interface are completed in this component internal, thus
Realize component integrally to the Lossless transport of TCH test channel useful signal.It, can be according to the demand of different test objects when specifically used
The corresponding interface with the panel is connect with test equipment, acquires useful signal.
Inside setting of the invention is as shown in Figure 3.It mainly include the corresponding radio-frequency terminals 1 of multiple airborne equipment frequency ranges, low
Bandpass filter 2, high-pass filter 3 and RF physical switch 4 are connected between antenna input panel and test output slab, just
In accurately measuring humorous clutter.In specific test process, when extraneous fundamental frequency is lower than tested airborne equipment frequency range, RF physical
Switching gate high-pass filter is tested in tested airborne equipment band and with outer high frequency section frequency spectrum, when extraneous fundamental frequency is higher than
When tested airborne equipment frequency range, RF physical switching gate low-pass filter is tested in tested airborne equipment band and with outer low frequency
Partial frequency spectrum.Wherein RF physical switch is used for the switching of the corresponding high and low pass filter of same airborne equipment.Radio-frequency terminals master
It is used for connection and the matching with airborne antenna and test equipment.RF physical switch uses double-pole double throw RF switch, to filter
The input/output terminal of wave device synchronizes switching.Meanwhile inside is additionally provided with blocking port, to input terminal/filter/output end
Between matching properties, loss correction etc..
Claims (9)
1. a kind of airborne antenna receives spectrum test filtering unit, which is connected between antenna and frequency spectrograph, feature
Be: the component is with the corresponding radio-frequency terminals of multiple airborne equipment frequency ranges, low-pass filter, high-pass filter and RF physical
Switch is constituted；Wherein RF physical switch is used for the switching of the corresponding high and low pass filter of same airborne equipment；Radio-frequency terminals master
It is used for connection and the matching with airborne antenna and frequency spectrograph；When extraneous fundamental frequency is lower than tested airborne equipment frequency range, penetrate
Frequency physical switch gates high-pass filter, tests in tested airborne equipment band and with outer high frequency section frequency spectrum, when extraneous fundamental wave frequency
When rate is higher than tested airborne equipment frequency range, RF physical switching gate low-pass filter, test is tested in airborne equipment band and band
Outer low frequency part frequency spectrum.
2. airborne antenna according to claim 1 receives spectrum test filtering unit, it is characterised in that: the low-pass filtering
Device, high-pass filter carry out Integrated design using radio frequency multiport form.
3. airborne antenna according to claim 1 receives spectrum test filtering unit, it is characterised in that: the RF physical is opened
It closes and uses double-pole double throw RF switch.
4. airborne antenna according to claim 1 receives spectrum test filtering unit, it is characterised in that: the radio-frequency head attached bag
Include the input terminal and the output terminal, for the connection of airborne antenna and frequency spectrograph, match.
5. airborne antenna according to claim 4 receives spectrum test filtering unit, it is characterised in that: the input terminal is adopted
With multiport form and the identical jack radio-frequency terminals of airborne cable, including TNC type, N-type, L12 type SMA type.
6. airborne antenna according to claim 4 receives spectrum test filtering unit, it is characterised in that: the output terminal is adopted
With N-type jack radio-frequency terminals or SMA type jack radio-frequency terminals.
7. a kind of device for carrying airborne antenna as described in claim 1 and receiving spectrum test filtering unit, it is characterised in that: should
Device by antenna input panel, test output slab, low-pass filter and high-pass filter integrated panel, RF physical switch and
Shell composition；The antenna input panel is provided with radio-frequency terminals input port, and it is defeated that test output slab is provided with radio-frequency terminals
Exit port passes through cable between antenna input panel, test output slab and low-pass filter and high-pass filter integrated panel
Conducting is provided with RF physical switch, shell between antenna input panel and low-pass filter and high-pass filter integrated panel
For encapsulating said panel.
8. device according to claim 7, it is characterised in that: the antenna input panel is additionally provided with and airborne equipment phase
Port even.
9. device according to claim 7, it is characterised in that: the shell uses aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910551853.7A CN110266331B (en) | 2019-06-24 | 2019-06-24 | Airborne antenna receiving spectrum test filtering assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910551853.7A CN110266331B (en) | 2019-06-24 | 2019-06-24 | Airborne antenna receiving spectrum test filtering assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110266331A true CN110266331A (en) | 2019-09-20 |
| CN110266331B CN110266331B (en) | 2021-09-14 |
Family
ID=67920960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910551853.7A Active CN110266331B (en) | 2019-06-24 | 2019-06-24 | Airborne antenna receiving spectrum test filtering assembly |
Country Status (1)
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| CN (1) | CN110266331B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4852080A (en) * | 1987-07-06 | 1989-07-25 | Oki Electric Industry Co., Ltd. | Analog front-end circuit for full-duplex communication |
| US5994890A (en) * | 1996-11-10 | 1999-11-30 | Togami Electric Mfg. Co., Ltd. | Harmonics survey system |
| JP2003032140A (en) * | 2001-07-19 | 2003-01-31 | Murata Mfg Co Ltd | Signal distribution circuit and wireless device provided with the same |
| CN201887730U (en) * | 2010-12-29 | 2011-06-29 | 武汉大学 | Program-controlled filtering device |
| CN102565672A (en) * | 2011-12-28 | 2012-07-11 | 镇江艾科半导体有限公司 | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device |
| CN102565674A (en) * | 2011-12-30 | 2012-07-11 | 镇江艾科半导体有限公司 | Automatic double-channel test circuit for radio frequency power amplifiers based on peripheral component interconnect extension for instrumentation (PXI) test equipment |
| CN204228843U (en) * | 2014-09-25 | 2015-03-25 | 上海市质量监督检验技术研究院 | A kind of AC network simulator topological structure |
| CN109150211A (en) * | 2017-06-19 | 2019-01-04 | 大唐移动通信设备有限公司 | A kind of wideband emitter |
| US20190074809A1 (en) * | 2016-02-08 | 2019-03-07 | Psemi Corporation | Integrated and Combined Phase Shifter and Isolation Switch |
-
2019
- 2019-06-24 CN CN201910551853.7A patent/CN110266331B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4852080A (en) * | 1987-07-06 | 1989-07-25 | Oki Electric Industry Co., Ltd. | Analog front-end circuit for full-duplex communication |
| US5994890A (en) * | 1996-11-10 | 1999-11-30 | Togami Electric Mfg. Co., Ltd. | Harmonics survey system |
| JP2003032140A (en) * | 2001-07-19 | 2003-01-31 | Murata Mfg Co Ltd | Signal distribution circuit and wireless device provided with the same |
| CN201887730U (en) * | 2010-12-29 | 2011-06-29 | 武汉大学 | Program-controlled filtering device |
| CN102565672A (en) * | 2011-12-28 | 2012-07-11 | 镇江艾科半导体有限公司 | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device |
| CN102565674A (en) * | 2011-12-30 | 2012-07-11 | 镇江艾科半导体有限公司 | Automatic double-channel test circuit for radio frequency power amplifiers based on peripheral component interconnect extension for instrumentation (PXI) test equipment |
| CN204228843U (en) * | 2014-09-25 | 2015-03-25 | 上海市质量监督检验技术研究院 | A kind of AC network simulator topological structure |
| US20190074809A1 (en) * | 2016-02-08 | 2019-03-07 | Psemi Corporation | Integrated and Combined Phase Shifter and Isolation Switch |
| CN109150211A (en) * | 2017-06-19 | 2019-01-04 | 大唐移动通信设备有限公司 | A kind of wideband emitter |
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| Publication number | Publication date |
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| CN110266331B (en) | 2021-09-14 |
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