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