EP2248254A1 - Dispositif electronique destine a des equipements hyperfrequences embarques sur satellite - Google Patents
Dispositif electronique destine a des equipements hyperfrequences embarques sur satelliteInfo
- Publication number
- EP2248254A1 EP2248254A1 EP08872901A EP08872901A EP2248254A1 EP 2248254 A1 EP2248254 A1 EP 2248254A1 EP 08872901 A EP08872901 A EP 08872901A EP 08872901 A EP08872901 A EP 08872901A EP 2248254 A1 EP2248254 A1 EP 2248254A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- microwave
- signal
- modulated signal
- parasitic
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000003071 parasitic effect Effects 0.000 claims abstract description 64
- 102100038019 Corticotropin-releasing factor receptor 2 Human genes 0.000 claims abstract description 12
- 101000878664 Homo sapiens Corticotropin-releasing factor receptor 2 Proteins 0.000 claims abstract description 12
- 230000002238 attenuated effect Effects 0.000 claims description 4
- 230000001902 propagating effect Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 102100038018 Corticotropin-releasing factor receptor 1 Human genes 0.000 abstract description 8
- 101000878678 Homo sapiens Corticotropin-releasing factor receptor 1 Proteins 0.000 abstract description 8
- 101000948733 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) Probable phospholipid translocase non-catalytic subunit CRF1 Proteins 0.000 abstract description 8
- 244000045947 parasite Species 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 101100317039 Aedes aegypti VGA1 gene Proteins 0.000 description 6
- 101000613565 Homo sapiens PRKC apoptosis WT1 regulator protein Proteins 0.000 description 4
- 101001113471 Homo sapiens Proteinase-activated receptor 4 Proteins 0.000 description 4
- 102100023710 Proteinase-activated receptor 4 Human genes 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 101001135199 Homo sapiens Partitioning defective 3 homolog Proteins 0.000 description 3
- 101001098557 Homo sapiens Proteinase-activated receptor 3 Proteins 0.000 description 3
- 102100037133 Proteinase-activated receptor 3 Human genes 0.000 description 3
- 101000603877 Homo sapiens Nuclear receptor subfamily 1 group I member 2 Proteins 0.000 description 2
- 101001098529 Homo sapiens Proteinase-activated receptor 1 Proteins 0.000 description 2
- 101001098560 Homo sapiens Proteinase-activated receptor 2 Proteins 0.000 description 2
- 101000713170 Homo sapiens Solute carrier family 52, riboflavin transporter, member 1 Proteins 0.000 description 2
- 101000713169 Homo sapiens Solute carrier family 52, riboflavin transporter, member 2 Proteins 0.000 description 2
- 102100037136 Proteinase-activated receptor 1 Human genes 0.000 description 2
- 102100037132 Proteinase-activated receptor 2 Human genes 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 101000957708 Catostomus commersonii Corticoliberin-2 Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/189—Indexing scheme relating to amplifiers the ground, reference or shield potential difference between different chips being controlled
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/459—Ripple reduction circuitry being used in an amplifying circuit
Definitions
- the present invention consists in a solution to the maintenance and improvement of specifications on the conduct susceptibility of a microwave chain, in particular for equipment embedded on satellites.
- spurious signals of frequency generally between 10 Hz and 10 MHz are systematically generated by the primary bus of the DC voltage converters and are found on the supply voltages microwave circuits.
- spurious signals of low frequency in front of the usual microwaves, which are of the order of one to several tens of GHz, are difficult to filter and are transmitted at the output of the microwave components.
- the parasitic signals are thus carried by the microwave signals and can cause disturbances.
- Conducted susceptibility makes it possible to measure the reaction of components vis-à-vis parasitic signals. We will thus measure, in dBc, the attenuation of parasitic signals. The higher the conductivity susceptibility, the greater the attenuation of parasitic signals is important and therefore the better the transmission of information on the microwave circuit. Conducted susceptibility is therefore generally the subject of specification required in the design of microwave equipment. This required driving susceptibility is generally a function of parasitic signal frequencies: the higher the frequency, the higher the susceptibility to driving. For example, for spurious signals at 10 MHz, a susceptibility of -55 dBc may be required. The more the conducted susceptibility is close to zero, the more the parasitic signals have a high power.
- spurious signals are essentially generated by the continuous supply or by the converter DC / DC because of its hash frequencies.
- Polarization networks can be used to attenuate these parasitic signals.
- the invention consists in fact of a microwave electronic device performing the attenuation of the parasitic modulated signals present at the input of said device, said parasitic modulated signals being transmitted to the microwave circuit by the DC / DC converter, and their frequency band being known because linked at the hash frequency of said DC / DC converter.
- the invention makes it possible to dispense with the presence of components dedicated to the attenuation of spurious signals at the level of the DC / DC converter or the power supply of the complete equipment.
- the DC / DC converter currently represents approximately 45% to 50% of the volume of microwave equipment on board satellites while the entire microwave chain represents about 20%, the expected gain on volume is very important.
- the subject of the invention is an electronic device intended for microwave equipment intended to be carried on satellites, said microwave equipment comprising:
- a DC / DC converter providing a DC supply voltage and a parasitic modulated signal
- a microwave channel propagating an input microwave signal at a high frequency and comprising at least two microwave electronic components: a first, having a microwave input powered by the input microwave signal and at least a first input power fed with voltage by said power supply, and outputting an intermediate microwave signal, and a second having a microwave input powered by the intermediate microwave signal and at least a second input supply, and providing a microwave output signal, said parasitic modulated signal being at least partially carried by the intermediate microwave signal output of the first electronic microwave component , characterized in that the device further comprises a phase shifter applied to the supply voltage and the parasitic modulated signal, located between the first supply input of the first electronic microwave component and the second supply input of the second electronic microwave component.
- phase shifter not being part of said microwave chain as such, and making it possible to phase out the parasitic modulated signal by 180 °, and in that the supply voltage and the spurious parasitic modulated signal of 180 ° feeds the second component electronic microwave quence by the second input power supply, the parasitic modulated signal carried by the microwave output signal being thus attenuated due to the summation, in said output microwave signal, the parasitic modulated signal and parasitic modulated signal phase shifted by 180 ° .
- the parasitic modulated signal has a low frequency, typically ten to ten million times less than the frequency of the microwave input signal of the microwave chain.
- the microwave chain comprises electronic microwave components of the type: amplifier (s), attenuator (s), attenuator (s) controllable (s) voltage (or VGA for Voltage Gain Attenuator according to the usual acronym).
- the device according to the invention may comprise a series of microwave electronic components and a series of phase shifters making it possible to phase out by 180 ° the parasitic modulated signal introduced with the supply voltage and carried by the microwave signal before each of the electronic microwave components. the most sensitive to the parasitic modulated signal.
- equipment on board a satellite may comprise a microwave electronic device according to the invention.
- FIG. 1 the schematic diagram of a current microwave electronic device
- FIG. 2 the simplified representation of the summation principle of spurious signals crossing different microwave circuits
- Figure 3 the simplified diagram of the principle of the invention, consisting of phase shifting 180 ° spurious signals between two microwave circuits;
- Figure 4 the diagram of an example of an electronic circuit for producing a 180 ° phase shifter used in the invention
- FIG. 5a in the context of the implementation of the invention, the diagram of a measurement bench applied to any electronic microwave device, including two VGAs (for Voltage Gain Attenuator), component microwave electronics having an attenuator;
- FIG. 5b the diagram of the voltages measured by an oscilloscope on the circuit of FIG. 5a;
- FIG. 6a in the context of the implementation of the invention, the diagram of a measurement bench applied to a microwave electronic device according to the invention based on the same circuit as that of FIG. 5a, and comprising a phase shifter placed between the two VGAs;
- FIG. 6b the diagram of the voltages measured by an oscilloscope on the circuit of FIG. 5b.
- Figure 1 illustrates a definition of the susceptibility conducted as noise level at the output of a microwave equipment.
- the line current carries a parasitic modulated signal PAR1.
- the primary circuit comprises a DC / DC converter ALIM1 whose role is to provide a DC voltage, for example 100 V.
- the parasitic modulated signal can be attenuated by the DC / DC converter ALIM1; it becomes the parasitic modulated signal PAR2, whose frequency band linked to the hashing frequency of the DC / DC converter ALIM1 can be known.
- another secondary converter ALIM2 supplies the hyperfrequency chain HYPER with the DC voltages necessary for the operation of the electronic microwave components that compose it.
- the parasitic modulated signal PAR2 can be attenuated by the secondary converter ALIM2 and it is therefore a parasitic modulated signal PAR3 that arrives at the electronic microwave components of the hyperfrequency chain HYPER.
- a microwave signal represented by the amplitude modulation line RF1 arrives at the microwave channel HYPER by the input IN.
- the HYPER microwave channel provides a microwave signal represented by the RF2 amplitude modulation line.
- parasitic amplitude modulation lines PS which correspond to the parasitic modulated signal PAR3 carried by the microwave signal at the output of the HYPER microwave chain.
- the difference between the RF2 line and the PS lines corresponds to the driving susceptibility. The smaller the PS lines in front of the RF2 line, the better the conducted susceptibility performance and the higher the output microwave signal quality.
- the DC / DC converter ALIM1 provided most of the necessary attenuation of parasitic modulated signals. He was helped by the secondary converter ALIM2.
- a lightened DC / DC converter ALIM1 does not attenuate the parasitic modulated signal PAR1 sufficiently, the parasitic modulated signal PAR3 which arrives at the hyperfrequency chain HYPER thus presents a high power and the microwave signal at the output of the hyperfrequency chain HYPER is disturbed.
- FIG. 2 makes it possible to apprehend another difficulty related to parasitic modulated signals.
- the voltage A which supplies the microwave electronic components CRF1 and CRF2 is accompanied by a parasitic modulated signal PAR4.
- the microwave signal RF1 processed by the CRF1 component becomes the RF2 microwave signal which carries parasitic signals PS1.
- a microwave signal RF3 carrying parasitic signals PS2 is obtained.
- These parasitic signals PS2, which disturb the microwave signal at the output of the microwave chain shown in FIG. 2 correspond to the summation of the parasitic signals brought by the supply voltage, firstly to the component CRF1, then to the component CRF2.
- Figure 2 illustrates that the amplitude modulation lines of spurious signals go up, which poses a major problem but is also at the origin of the basic idea of the present invention.
- Figure 3 schematically represents the central idea used in the invention. It is almost the same microwave chain as that of Figure 2. This time, we represent the parasitic signals on the microwave line, as modulated signals, by sinusoids and no longer by their corresponding amplitude modulation lines.
- the supply voltage A of the component CRF1 supports a parasitic modulated signal PAR4.
- the microwave signal HFO ' is routed to the microwave input of the first component CRF1 of the chain. At the output of this component CRF1, the microwave signal HF1 'carries a parasitic signal PS1'.
- the invention then consists mainly of placing a phase shifter PHI on the power supply bus in order to phase out the parasitic modulated signal PAR4 by 180 ° after it reaches the component CRF1 but before it reaches the second component CRF 2.
- the phase shifter PHI is placed in the secondary circuit of the equipment, and therefore does not belong to the microwave chain as such.
- the supply voltage A of the second component CRF2 is therefore accompanied by a parasitic modulated signal phase-shifted by 180 ° PAR4D. Consequently, in the microwave signal HF2 'at the output of the component CRF2, the summation of the parasitic signals PS2', as explained in the description of FIG. 2, results, in a simplified manner, by the summation of the parasitic modulated signal PAR4 d. origin and parasitic modulated signal phase shifted 180 ° PAR4D. As illustrated in FIG. 3, this summation tends to cancel the parasitic modulated signal due to the phase shift of 180 °.
- FIG. 4 shows an exemplary embodiment of a phase shifter of 180 °.
- This nonlimiting example comprises an operation amplifier AO, three resistors, R1 of 400 k ⁇ , R2 and R3 of 10 k ⁇ , and a capacitance C of 10 nF.
- AO operation amplifier
- R1 of 400 k ⁇
- R2 and R3 of 10 k ⁇
- C capacitance
- FIG. 5a shows the diagram of a model making it possible to measure at the oscilloscope OSC the level of the parasites at the output of a microwave chain consisting of two VGAs (Voltage Gain Attenuator according to the acronym), VGA1 and VGA2, powered by all two on their positive input by a DC power supply 5 of +5 V and on their negative input by a supply voltage 1 of -1 V to which a PAR parasitic modulated component has voluntarily been added by means of a generator of I kHz low frequency signals passing through a transformer T.
- a 6GHz frequency synthesizer provides a microwave signal at the input of the microwave and VGA1 component in particular.
- a detector D At the output of the microwave chain, a detector D has been placed whose function is to enable the modulated component of the signal at the output of the microwave channel to be viewed using the oscilloscope OSC and to observe the phase levels between the different signals.
- the voltages at point V1 are measured at the input of the negative power supply of the first component VGA1 of the microwave chain and Vf point at the output of the chain, after the second component VGA2.
- the results displayed by the OSC oscilloscope are shown in Figure 5b.
- FIG. 5b shows the high amplitude of the parasitic modulated signal in the voltage Vf measured on the microwave line at the output of the microwave chain.
- Vf the voltage measured on the microwave line at the output of the microwave chain.
- FIG. 6a shows the diagram of a model embodying the invention and to validate the principle.
- a phase shifter of 180 ° PHI was added between the negative inputs of the microwave components VGA1 and VGA2.
- the voltages measured on the oscilloscope OSC are: the voltage V1 at the negative input of the first component VGA1, before the phase shifter PHI, the voltage V2 at the negative input of the second component VGA2, after the phase shifter PHI, and the voltage Vfc at the output of the microwave chain.
- the results displayed by the OSC oscilloscope are shown in Figure 6b.
- the main advantage of the invention is that it makes possible a significant attenuation of the parasitic modulated signals carried in the microwave chains of microwave devices such as those which are integrated with satellites by simply adding one or more phase shifters of 180 ° between the components that do not exhibit sufficient susceptibility performance. It therefore makes it possible to significantly improve the conduct susceptibility performances of a microwave chain without adding an element to said microwave chain, the phase shifter PHI being placed in the secondary circuit of the equipment.
- the invention also makes it possible to dispense with certain elements responsible for the attenuation of parasitic signals generally integrated with power supplies and other DC / DC converters in all current microwave equipment.
- the gain in weight and volume over the entire microwave equipment is very important, which is of primary interest in the context of equipment intended to be embedded on satellites.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
- Noise Elimination (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0801036A FR2928014B1 (fr) | 2008-02-26 | 2008-02-26 | Dispositif electronique destine a des equipements hyperfrequences embarques sur satellite |
| PCT/EP2008/067659 WO2009106183A1 (fr) | 2008-02-26 | 2008-12-16 | Dispositif electronique destine a des equipements hyperfrequences embarques sur satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2248254A1 true EP2248254A1 (fr) | 2010-11-10 |
Family
ID=39739745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08872901A Withdrawn EP2248254A1 (fr) | 2008-02-26 | 2008-12-16 | Dispositif electronique destine a des equipements hyperfrequences embarques sur satellite |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8427221B2 (fr) |
| EP (1) | EP2248254A1 (fr) |
| JP (1) | JP2011514061A (fr) |
| KR (1) | KR101616255B1 (fr) |
| CN (1) | CN101953066A (fr) |
| CA (1) | CA2712383A1 (fr) |
| FR (1) | FR2928014B1 (fr) |
| WO (1) | WO2009106183A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2962601B1 (fr) | 2010-07-06 | 2013-06-14 | Thales Sa | Connecteur d'ensembles electroniques blindant et sans soudure electrique |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58121806A (ja) | 1982-01-13 | 1983-07-20 | Mitsubishi Electric Corp | レ−ダ送信装置 |
| JPH05235647A (ja) * | 1992-02-19 | 1993-09-10 | Mitsubishi Electric Corp | 雑音低減装置 |
| US5446421A (en) * | 1994-02-02 | 1995-08-29 | Thomson Consumer Electronics, Inc. | Local oscillator phase noise cancelling modulation technique |
| JPH10313220A (ja) * | 1997-05-13 | 1998-11-24 | Nec Corp | スプリアス抑圧型高周波増幅器 |
| DE19821455C1 (de) * | 1998-05-13 | 1999-11-25 | Siemens Ag | Verzögerungsoptimierter Multiplexer |
| US7299405B1 (en) * | 2000-03-08 | 2007-11-20 | Ricoh Company, Ltd. | Method and system for information management to facilitate the exchange of ideas during a collaborative effort |
| KR20020070572A (ko) * | 2001-03-02 | 2002-09-10 | (주)알에프씨씨 | 지연선로를 이용한 선형화기를 갖는 선형전력증폭기 |
| US7627808B2 (en) * | 2003-06-13 | 2009-12-01 | Microsoft Corporation | Computer media synchronization player |
| DE102008052172B4 (de) * | 2008-10-17 | 2014-01-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung zum Erzeugen eines Korrektursignals |
-
2008
- 2008-02-26 FR FR0801036A patent/FR2928014B1/fr not_active Expired - Fee Related
- 2008-12-16 WO PCT/EP2008/067659 patent/WO2009106183A1/fr not_active Ceased
- 2008-12-16 US US12/919,219 patent/US8427221B2/en not_active Expired - Fee Related
- 2008-12-16 EP EP08872901A patent/EP2248254A1/fr not_active Withdrawn
- 2008-12-16 CA CA2712383A patent/CA2712383A1/fr not_active Abandoned
- 2008-12-16 KR KR1020107017925A patent/KR101616255B1/ko not_active Expired - Fee Related
- 2008-12-16 JP JP2010547971A patent/JP2011514061A/ja active Pending
- 2008-12-16 CN CN2008801274302A patent/CN101953066A/zh active Pending
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2009106183A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2712383A1 (fr) | 2009-09-03 |
| US20100327933A1 (en) | 2010-12-30 |
| FR2928014B1 (fr) | 2011-12-23 |
| CN101953066A (zh) | 2011-01-19 |
| FR2928014A1 (fr) | 2009-08-28 |
| KR20100127753A (ko) | 2010-12-06 |
| US8427221B2 (en) | 2013-04-23 |
| JP2011514061A (ja) | 2011-04-28 |
| KR101616255B1 (ko) | 2016-04-28 |
| WO2009106183A1 (fr) | 2009-09-03 |
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