测试公司ＲＦ培训

maikou.zhang

  测试公司ＲＦ培训资料：

测试公司的RF业务培训资料
虽然现在发出来有点过时,但还是来分享哈`~~~`



Part 15.239    88~108MHz    Audio sender(任何型式的發射器材)(如車用廣播擴音系統)    1.    主波電場強度 (Fundamental emission)Limit 250uV (47.95dBuV)2.    頻帶寬度 (Emission bandwidth)Lower CH Freq. -200K pt. > 88MHzUpper CH Freq. +200K pt. < 108MHz3.    頻帶外發射 (Out of band emission)在200KHz操作頻帶外之任何發射不得超過FCC Class B / 雜波不能比主波大    1.    主波電場強度 (Fundamental emission)RBW=100K; VBW=100K2.    頻帶寬度 (Emission bandwidth)RBW=10K; VBW=10K3.    不必要發射 (Spurious emission)測量頻率到10倍頻


Part 15.247    902~928MHz, 2.4~2.4835GHz,5.725~5.850GHz    Digitally modulated intentional radiators:Spread Spectrum Device (FHSS)(展頻技術產品 – 跳頻技術)(如Bluetooth, Cordless phone)    FHSS1.    20dB bandwidth: <1M2.    Peak Output Power: 1W3.    PPSD: 8dBm4.    Band-edge: 20dB point5.    Dwell time: <0.4sec6.    Carrier frequency separation: >25k7.    Channel number: >75CH8.    Radiated emission: FCC Class B limit9.    AC powerline conducted emission: CISPR 22    FHSS1.    頻道間隔最少距離25k or 20dB2.    應依照頻率表平均使用頻譜3.    接收機需提供與發射機相對應的接收頻寬及頻率跳動之說明文件4.    使用2.4~2.4835GHz應最少有15個不互相重疊的頻道5.    每個頻道的佔用時間需少於0.4sec6.    Output power in 2..4GHz Band:頻道數<75CH: 0.125W / 其他: 1W  
       Digitally modulated intentional radiators:Spread Spectrum Device  (DSSS)(展頻技術產品 – 直接序列)(如Wireless LAN IEEE 802.11a (upper band)/b/g)    DSSS (DTS)1.    6dB bandwidth: >500k2.    Peak output power: <1W3.    PPSD: 8dBm4.    Band-edge: <50dB pt.5.    Radiated emission: FCC Class B limit6.    AC powerline conducted emission: CISPR 22     
Part 15.249    902~928MHz, 2.4~2.4835GHz,5.725~5.850GHz24G~24.25GHz*    Intentional radiators using other modulation technique(Part 15.247以外的任何型式的發射器材)(如A/V sender; Wireless keyboard/mouse)    1.    Band-edge: <20dB pt.2.    Radiated emission: FCC Class B limit3.    AC powerline conducted emission: CISPR 22    *24GHz~24.25GHz產品需符合§15.249b:1~3 (加測frequency tolerance)


Part 15.407    5.15~5.25GHz5.25~5.35GHz    UNIIUnlicensed Nationnal Information Infrastructure Device(如Wireless LAN IEEE 802.11a (lower band))    UNII1.    Band-edge 2.    AC powerline conducted emission3.    26dB emission bandwidth4.    Peak output power5.    PPSD6.    Peak excursion7.    Conducted undesirable emission8.    Radiated undesirable emission9.    Transmission in absence of data10.    Frequency stability