dual band reference design results she february 2013
TRANSCRIPT
Dual Band Reference Design Results
SHE February 2013
TI Confidential – NDA Restrictions
Dual Band
CC112x/CC12xx
RX Balun
TX Balun
50Ohm I/O RF SPDT switch
Filter Band 1
Filter Band 2
TI Confidential – NDA Restrictions
BOM
• TX path uses 868 MHz BOM• RX path uses 433 MHz BOM• Exception is C181 which is 3.9 pF• No filtering between switch and antenna in the
measurements– Must be added to final design
TI Confidential – NDA Restrictions
Measurement Results
433 [MHz] 868 [MHz] ETSI limit
Output Power [dBm] +12.8 +15.1 +10 / +14 dBm
2nd harmonic [dBm] +5.0 -21.5 -36 / -30 dBm
3rd harmonic [dBm] -6.5 -9.9 -30 / -30 dBm
TX current [mA] 60.1 60.5
Sensitivity [dBm] -118 -122
• Above is without filter or switch• Filters needed to attenuate harmonics
– Has a finite insertion loss
• Switch needed– Has a finite insertion loss