product decription

FCC ID: PL6-ISM-CPE-R1

Operational Description

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FCCID_255443

FCC ID#: PL6-ISM-CPE-R1 Description - 2.4GHz CPE Release 1 General Information EUT NAME: Navini Networks RipWave 2400 MODEL NUMBER: 2400E (Ethernet), 2400U (USB) CPE ASSEMBLY PART NUMBER: 92-00078-00 (Ethernet), 92-00077-00 (USB) HIGH LEVEL PART NUMBER (includes power adapter and packaging): 95-21200-00 (Ethernet), 95-22200-00 (USB) POWER ADAPTERS: PHIHONG Model PSA10A-050 5V @ 2A PHIHONG Model PSC15A-050S 5V @ 3A ACHME CORP Model AM13B05S10 5V @ 2A

FCC ID #: PL6-ISM-CPE-R1 RF Section 1. Introduction The CPE RF portion consists of four major sub-circuits: - Transmitter - Receiver - Local Oscillator - Antenna Switch Figure 1 shows the block diagram of the CPE. 2. Transmitter Sub-circuit The I & Q modulator mixes the baseband I & Q modulating signals with the 700MHz IF LO signal to generate a modulated IF out signal at 350MHz. The modulated IF signal is filtered and amplified before it is mixed with an RF LO signal by a mixer to up-convert to an RF signal. The RF modulated signal is again filtered and amplified to a desired output power level at the Antenna Switch Sub-circuit. 3. Receiver Sub-circuit The receiver receives an RF signal from the Antenna Switch Sub-circuit. This RF signal is amplified and filtered before it is mixed with an RF LO signal by the mixer to down-convert to a 350MHz IF. The received IF signal is again filtered and amplified before it is mixed with the 700MHz IF LO by the I & Q demodulator to generate the demodulated I & Q signals. These I & Q signals are then sent to the baseband circuit for signal processing. 4. Local Oscillator (LO) Sub-circuit The LO Sub-circuit is phase-locked to a stable 16MHz reference oscillator to generate the 700MHz IF LO and the RF LO. The 700MHz LO is used for the I & Q modulator/demodulator and the RF LO is used for the up-converting/down-converting mixer. Description Page 2 of 4

FCC ID #: PL6-ISM-CPE-R1 5. Antenna Switch Sub-circuit The Antenna Switch Sub-circuit switches the transmitter and the receiver to one of the three antennas. 6. Antennas The CPE contains three antennas: 1 X 2dBi omni-directional antenna and 2 X 7dBi directional (patch) antennas. Photos of these antennas can be seen in the document “Photos.doc”. Note: Only one antenna is transmitting at any instant of time. 7. Output Power The CPE output power limit is defined in Part 15.247. Due to the 2dBi omni-directional antenna the device, in this configuration, should be considered a point to multipoint transmitter. The highest gain antenna (patch = 7dBi), although directional, is used for the calculation such that no transmission whether through the omni or the patch will exceed the point to multipoint 36dBm EIRP limit defined in Part 15.247. The maximum transmitter output power for this CPE is 28.3dBm as can be seen in the test report. 8. Other Clock Frequencies Ethernet: 16MHz, 80MHz, 100MHz USB: 12MHz, 16MHz, 80MHz, 100MHz, Description Page 3 of 4

FCC ID #: PL6-ISM-CPE-R1 Receiver LNA RX-I TO ANT 1 IQ DEMOD BASEBAND LPF SPDT RX-Q AGC 50 350MHz Ohm SAWFILT ANT 2 LPF SP3T SPDT RF AGILE 700MHz IF LO LO DFC22R44P084LHA ANT 3 TX-I IQ TO LPF MOD BASEBAND TX-Q PA AGC Transmitter Figure 1 2.4GHz CPE BLOCK DIAGRAM Description Page 4 of 4


Document Created: 2002-07-10 14:47:24
Document Modified: 2002-07-10 14:47:24
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