Does anyone have a sample dipole planar or microstrip UHF antenna working at 915Mhz? I need a good performance antenna to harvesting enery for my circuit.
In my experimences, when I designed 8 stages of multiple voltage using RF diode HSMS-2852, the output voltage I get just 1.62V (~1 meter from the 1W RFID reader). In the other hand, the P1110 (energy harvesting IC of Powercast) is intergrated in the commercial board (a good performance antenna at 915Mhz) can get 1.62V (over 6 meter). Now I want to apply the output voltage from energy harvesting for supply to sensing circuit (MCU+sensor), what do I need to pump voltage to 3V, at least 5mA to operate the circuit? I search on the Internet and discover LTC3105 IC boost (just 200mV input, 3.3V for LDO), it is possiblility?
I appreciate any suggestion and recommendation.