微波頻率與波段Band頻率范圍（HZ）波長(zhǎng)R1.7-2.6G0.115-0.176mD2.2-3.3G0.091-0.136mS2.6-3.95G7.59-11.5cmE3.3-4.9G6.1-9.1cmG3.95-5.85G5.13-7.59cmF4.9-7.05G4.56-6.1cmC5.85-8.2G3.66-5.13cmH7.05-10.10G2.97-4.56cmX8.2-12.4G2.42-3.66cmKu12.4-18.0G1.67-2.42cmK15-26.5G1.13-2.0cmKa26.5-40G0.75-1.13cmQ33-50G6.0-9.09mmU40-60G5.0-7.5mmV50-75G4.0-6.0mmW75-110G2.73-4.0mmY325-500G0.6-0.923mmMicrowavespectrumdesignation(IEEE)BandFrequencyRange(Hz)OriginofnameWavelengthHF3-30MHighFrequency100m-10mVHF30-300MVeryHighFrequency10m-1mUHF(P)300-1000MUltraHighFrequency100cm-30cmL1-2GLongwave30cm-15cmS2-4GShortwave15cm-7.5cmC4-8GCompromisebetweenSandX7.5cm-3.75cmX8-12GUsedinWWIIforfirecontrol,Xforcross(asincrosshair)3.75cm-2.50cmKu12-18GKurz-under2.50cm-1.67cmK18-27GGermanKura(short)1.67cm-1.11cmKa27-40GKurz-above1.11cm-0.75cmV40-75G7.5mm-4.0mmW75-110GWfollowsVinthealphabet4.0mm-2.7mmmm110-300G2.7mm-1.0mmKa波段的缺點(diǎn)在于大氣和云雨的衰減比較嚴(yán)重，因而限制了其作用距離。EMSpectnun1cm-d(r-WavelengthfmjMicrowavesFrequency(HzjLower旦■巖：d4—EEEmIJWarelengthi

(metres}F8-band30-1DUcmL-band1S-30cmS-band7.S-1ScmC-bandEMSpectnun1cm-d(r-WavelengthfmjMicrowavesFrequency(HzjLower旦■巖：d4—EEEmIJWarelengthi

(metres}F8-band30-1DUcmL-band1S-30cmS-band7.S-1ScmC-band3.75-7.5cmX-band2.4-3.7gcmi1fi7-?anmK-lranri1.1-1.67cmKa-band]0.7S-1.1cmmiIIimetrebandL1826.5FrequemiicyJQHz)'4011010101010101010101010101010Hz~■^_/"V_/XA/V\/WWWWWIBILewIraquency HtghfrequencyLongwaveiengitli ShortwavelengmLowcjuarrtuFflen&rgy HighcjuanlunnfinefgyMicraxva^reregionSOONIHz30GHzMillimeterwave；W