Cobham Microwave RF & Microwave Filters - Cobham plc

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Cobham Microwave FiltersPresentationTECHNOLOGIES VERSUS FREQUENCIESFrequencyTechnologyAir cavityCeramicLumped elementWave Guide0.01 - 0.3 GHZ 0.3 - 2 GHZ 2 - 5 GHZ 5 - 40 GHZTECHNOLOGY STRENGTH AND WEAKNESS COMPARISONTechnology Air Cavity Lumped Element Ceramic resonator Bw < 3% Ceramic resonator Bw > 3% WaveguideStrengthLow lossHigh attenuationLow IM3PowerLP/HP/BP designSizeAttenuationSMDSizeTemp.Stab (6 ppm)Power / sizeAttenuation SMDSizeTemp.stab (10 ppm)SMDVery low lossesHight powerHight selectivityWeaknessSizeWeightLossPowerBP designLow powerUltimate attenuationUltimate attenuationSizeR&D, MANUFACTURING AND SCREENING CAPABILITIESR&DCobham engineers are using combination of softwares to achieve world class filter and duplexer designs. AGILENT GENESYS ® , CST MicrowaveStudio ® , Fest 3D ® or MATHCAD ® in house model are used to perform electrical performance simulations.Very high accuracy between simulated and measured filter is achieved ( see hereunder plots of X band filter).Excellent correlation between simulation and measurementSee under plots of x band filter measured and simulated8 Cobham Microwave
AIR CAVITY FILTERS CERAMIC FILTERS LUMPED ELEMENT WAVEGUIDE FILTERSFILTERSFor mechanical design, thermal analysis and mechanical analysis, Solidworks is run. All CAD files are generated for CNC machining to avoidmistake and reduce lead time.Mechanical designand analysisElectromagnetic simulationThermal analysisFor space application, Corona and Multipactor effects are taken into account at design stage.The multipactor analysis executed with FEST3D used the following input parameters:Parameters:MaterialSilverMaximum SEY 2.22Lower crossover electron energy (eV) 30.0Electron energy at maximum SEY (eV) 165.0Initial number of electrons 4000Initial power (W) 1000.0Precision (dB) 0.1The results of the multipactor analysis are the Follonwing*:Breakdown levels for frequency 17.8 GHzElemBreakdown (W)9 No breakdown23 No breakdownBreakdown levels for frequency 19.3 GHzElemBreakdown (W)9 No breakdown23 No breakdown*The rest of the elements have not been analyzed under multipactor.Cobham Microwave 9
Page 1 and 2: Cobham MicrowaveRF & Microwave Filt
Page 3 and 4: ContentsPresentationCobham Microwav
Page 5 and 6: DIODESFILTERS &DUPLEXERSISOLATORS &
Page 7: AIR CAVITY FILTERS CERAMIC FILTERS
Page 11 and 12: FiltersCavity filtersCeramic filter
Page 13 and 14: AIR CAVITY FILTERS CERAMIC FILTERS
Page 19 and 20: FiltersMarketsCobham Microwave 19
Page 21 and 22: OUTLINE DRAWINGTYPICAL PERFORMANCES
Page 29 and 30: OUTLINE DRAWINGCobham Microwave 29
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OUTLINE DRAWINGTYPICAL PERFORMANCES
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Cob-fcer-041Ceramic FiltersFEATURES
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Cob-flc-047Lumped Element FiltersFE
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TYPICAL PERFORMANCESCobham Microwav
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Cob-dcer-005Ceramic DuplexersFEATUR
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TECHNOLOGYAir cavityCeramic resonat
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Cobham Microwave RF & Microwave Filters - Cobham plc

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