User's Manual

MPR-2010AR Page 7 Doc# 041308

AWID PROPRIETARY

well-designed dual-antenna reader can usually provide 25 to 30 dB of isolation between

the two signal paths, reducing the unwanted signal in the receive chain to –20 dBm.

However, when the RFID reader antenna is facing a tag placed on a large metallic

object at a distance of 12 inches, the reflected transmitter signal at the receiver input

can be as high as 13dBm, thereby eliminating any advantage of the dual-antenna

design.

In actual circuit implementation, AWID developed a proprietary circuit to duplicate the

functions of the circulator, with improved directivity and isolation.

Figure 2 Block Diagram, Dual-Antenna RFID Reader

1.2 SPECIAL FEATURES:

• Multi-Protocol: ISO-18000-6 Type B, EPC Class 1

Gen 1 & 2, EM Micro, EPC

Class 0

, EPC V1.19 Rev.2

• Thin passive tags with long-range performance

• High performance circular polarized antenna

• RS-232 input/output

• Splash proof design for indoor or outdoor applications

• UV stabilized housing

•

Both 64- and 96-bit

RCVE

XMIT

RF Q

RCV

FREQUENCY

SYNTHESIZER

Driver

AMP

Power

AMP

COUPLER

BPF

A/D

CPU

I/O

DEMOD

FRE

AMPL

XMT