Selection Guide for choosing the best Powerharvester Receiver. The chipset reference design is available for license and supports RF power harvesting of frequencies from 1MHz to 6GHz. Received power is in the range of microwatts (uW) to low milliwatts (mW) depending on the RF input power.
2. Powerharvester® Receivers
Low Volume Applications and Prototyping
Convert RF input to DC current
Power/charge management
Power
RF P1110 I/O
Frequency range: 850-950MHz
RSSI and Data output RF P2110
Power
I/O
Designed for 50Ω antennas
P1110 P2110
Continuous Power Output Pulsed Power Output
• RF range: -5.0dBm to 20dBm • RF range: -11.5dBm to 15dBm
• Output voltage: 1.8V to 4.2V • Output voltage: 1.8V to 5.25V
(configurable over-voltage) (configurable and regulated)
• Range of at least 3 meters • Range of at least 10 meters
3. Powerharvester® Chipset / Reference Design
High Volume Applications
Flexible implementation
Output from 2 to 5V (higher with custom design)
Wide tunable range: 1MHz to 6GHz
RF harvesting down to around -12dBm input
Same performance as P1110 / P2110
Estimated BOM: $5-6 @ 3K, $3-5 @100K, <$2 @1M+
Reference designs available for license
RF Harvesting Circuit
• Powercast chipset (3 custom ICs)
• 20-25 other discrete components
• Small footprint: 0.2 in2 / 1.3 cm2
5. Component Selection
Battery Regulated Output Max RF Input
Charging Output Voltage Operating Power
Range Distance3 (dBm)
P1110 Yes No2 0 - 4.2V 10 feet -5 to 20
Continuous
P2110 Yes1 Yes 2 - 5V 40 feet -11 to 10
(Standard) Intermittent6
P2110 Yes1 Yes 2 - 5V 10 feet -5 to 20
(High power)4 Continuous5
Notes:
1. Additional circuitry required (see BAT-EVAL-01 schematic)
http://www.powercastco.com/PDF/BAT-EVAL-01-Rev0A-Schematic.pdf
2. Supports configurable over-voltage protection up to 4.2V
3. Based on a 3W source and 6dBi receiving antenna
4. High power version currently only available as a licensed reference design
5. May become intermittent for high load currents or longer ranges
6. May become continuous in close proximity for low load currents