A radio frequency management device includes a microprocessor, output
devices connected in parallel to the microprocessor, reading units
respectively connected to the output devices, each reading unit
comprising an antenna coil, a blocking coil, a radio frequency driver
module for driving the antenna coil, and a blocking driver module for
driving said blocking coil to shield the antenna coil from the radio
frequency driver module, and a reading and writing device connected to
the microprocessor. The microprocessor controls the output devices in
such a manner that only one radio frequency driver module is activated to
drive the associated antenna coil at any time while the other antenna
coils of the other reading units are shielded from the associated radio
frequency driver modules by the associated blocking coils; the reading
units are processed one after another in a proper order.