InVue ED0991 ユーザーズマニュアル
Antenna
The antenna couples energy between the air and the module. The ED0991 module has an integrated antenna that
is near omni-directional. Note that the end radiation pattern depend not only on the antenna, but also the ground
plane, enclosure and installation environment.
is near omni-directional. Note that the end radiation pattern depend not only on the antenna, but also the ground
plane, enclosure and installation environment.
Matching
The matching provides the correct loading of the transmit amplifier to achieve the highest output
power as well as the correct loading for the receive LNA to achieve the best sensitivity.
power as well as the correct loading for the receive LNA to achieve the best sensitivity.
Physical
The physical layer provides conversions between data, symbol and RF signal.
MAC
The MAC layer is part of the Logical Link Layer and provides frame handling, addressing and
medium access services.
medium access services.
Microcontroller Interface
The microcontroller interface exposes registers and commands for the physical and MAC layers
to a microcontroller.
to a microcontroller.
Power Management
Power management ensures a stable supply for the internal functions as well as providing means
for a low power sleep mode, in which most of the transceiver is power off.
for a low power sleep mode, in which most of the transceiver is power off.
Figure 1