User's Manual

USING THE ANTENNA
General information
26 Digi Connect Wi-Wave 802.11 b/g Hardware Reference, Rev. B 2/2010
Connect
Wi-Wave 802.11
b/g antenna
configurations
The Digi Connect Wi-Wave 802.11 b/g can transmit data or receive data, but not at
the same time.
Note: If only one antenna is used, it must be connected to Wi-Fi RP-SMA antenna
connector J1. This is the Digi Connect Wi-Wave 802.11 b/g’s primary antenna.
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General information
The module uses the same antennas to transmit and receive the 802.11b/g RF
signal. An antenna switch is required to isolate the transmit signal from the receive
signal. The antenna switch works by alternately connecting the antennas to either
the transceiver transmit output or the transceiver receive input. To support this
antenna sharing scheme, the module operates in half-duplex mode; receive and
transmit operations do not occur at the same time.
Antenna switch The antenna switch is a digitally controlled 2.4 GHz, 50 ohm, multi-function solid
state switch, controlled by software.
The switch can handle >28dBm of signal on the transmit port. The insertion loss of
the antenna switch is <0.5dB and the receive to transmit port isolation is >23dB.
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Cable Specification: U.FL/W.FL to RP-SMA
Attributes
Note: Dimensions are provided for reference purposes only. The actual antenna
might vary.
Attribute Property
Impedance 50 Ohm
Frequency Range 0 to 6 GHz
Length 150 mm
Temperature Range -40
°to +90° C
Loss 108.5 mm x 10.0 mm
Weight 3.8dB/m (3 GHz)
5.6dB/m (6 GHz)