Operational description rev

FCC ID: RRK-WMPND03B

Operational Description

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FCCID_1227300

FCC ID: RRK-WMPND03B

Technical Description

This device is a Mini-PCI Card operates in both the 5GHz and 2.4GHz Bands with
DSSS and OFDM technique. The transmitter rate could be 11Mbps for 11b;
54Mbps for 11a/g; 144.44Mbps for Draft 802.11n (20MHz); 300Mbps for Draft
802.11n (40MHz). The transmitter of EUT is powered by host equipment.

NOTE:

1. There are four antennas provided to this EUT, please refer to the following table:
2.4GHz
Cable
Antenna Gain Cable
Chain Manufacture Model No. Antenna Type Connector Net Gain (dBi) length
(dBi) loss (dB)
(cm)
Chain (0) WHA YU C037-510987-A
Antenna (1) GROUP (SSR-91251) SMA Straight
Dipole 4 0.3 3.7 9.5
Chain (1) WHA YU C037-510987-A Plug Reverse
Antenna (2) GROUP (SSR-91251)
5GHz
Cable
Antenna Gain Cable
Chain Manufacture Model No. Antenna Type Connector Net Gain (dBi) length
(dBi) loss (dB)
(cm)
Chain (0) WHA YU C037-510988-A Band 1: 5.18 Band 1: 4.58
Antenna (1) GROUP (SSR-91252) SMA Straight Band 2: 5.52 Band 2: 4.92
Dipole 0.6 9.5
Chain (1) WHA YU C037-510988-A Plug Reverse Band 3: 6.63 Band 3: 6.03
Antenna (2) GROUP (SSR-91252) Band 4: 6.14 Band 4: 5.54

2. The EUT incorporates a MIMO function with 802.11n. Physically, the EUT provides two
completed transmitters and two completed receivers.
3. The EUT is 2 * 2 spatial MIMO (2Tx & 2Rx) without beam forming function. The
antenna configurations are two transmitter antennas and two receiver antennas, as
there are 2 Dipole antennas. Spatial multiplexing modes for simultaneous transmission
using 2 antennas, and for simultaneous receiver using 2 antennas.
4. The EUT complies with 802.11n standards and backwards compatible with 802. 11a,
802.11b, 802.11g products.
5. The above EUT information was declared by manufacturer and for more detailed
features description, please refer to the manufacturer's specifications or user's manual.

Report No. : RF981020H04

FCC ID: RRK-WMPND03B

FCC 15.407(c) states: The device shall automatically discontinue transmission in
case of either absence of information to transmit or operational failure. These
provisions are not intended to preclude the transmission of control or signaling
information or the use of repetitive codes used by certain digital technologies to
complete frame or burst intervals.
Applicants shall include in their application for equipment authorization a description
of hoe this requirement is met.

Data transmission is always initiated by software, which is then pass down through
the MAC, through the digital and analog baseband, and finally to the RF chip.
Several special packets (ACKs, CTS, PSPoll, etc…) are initiated by the MAC. There
are the only ways the digital baseband portion will turn on the RF transmitter, which it
then turns off at the end of the packet. Therefore, the transmitter will be on only while
one of the aforementioned packets are being transmitted.

Report No. : RF981020H04

Document Created: 2010-01-11 17:47:33
Document Modified: 2010-01-11 17:47:33

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