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.

1. Component Selection Guide

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

4. High-Efficiency, Wide Operating Range
80
RF-to-DC Conversion Efficiency (%)
P1110 - 915MHz, 3V
70
P2110 - 915MHz, 1.05V Power
60
50
40
30
20
10
Distance
0
-12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20
Input Power (dBm)

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