Netgear NM7371 用户手册

Rev 3 Sep.13

Proprietary and Confidential

3: RF Specifications

The NM7371 operates on the frequency bands listed below.

RF connections

When attaching antennas to the module:

Note:

To disconnect the

antenna, make sure you use
the Hirose U.FL connector
removal tool



(P / N UFL-LP-N-2(01)) to
prevent damage to the
module or coaxial cable
assembly.

•

Use Hirose U.FL connectors (3 mm x 3 mm, low profile; model
U.FL #CL331-0471-0-10) to attach antennas to the module’s
connection points

•

Match coaxial connections between the module and antenna to 50 .

•

Minimize RF cable losses to the antenna; the recommended maximum
cable loss for antenna cabling is 0.5 dB.

•

To ensure best thermal performance, if possible use the mounting
holes to attach (ground) the device to the main PCB ground or a metal
chassis.

Note:

If the antenna connection is shorted or open, the modem will not sustain

permanent damage.

Shielding

The module is fully shielded to protect against EMI and must not be
removed.

Antenna

When selecting antennas for use with NM7371, refer to MPE
requirements and limitations defined within the FCC application and
available on the FCC website.

Choosing the correct antenna cabling

When matching antennas and cabling:

•

The antenna (and associated circuitry) should have a nominal
impedance of 50  with a return loss of better than 10 dB across
each frequency band of operation.

Determining the antenna’s location

When deciding where to put the antennas:

•

Antenna location may affect RF performance. Although the module is
shielded to prevent interference in most applications, the placement