Panasonic BL-WV10A, Руководство по обслуживанию

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The output voltage DC12V of the AC adaptor is supplied to the TV adaptor through the DC jack
(CN1000), and converted to about 3.3V and 1.5V by DC/DC converter (IC1000).
And then 3.3V is converted to about 2.5V by the regulator (IC1001).
9.6. RF BLOCK
- Antenna
It resonates the antenna at 2.45GHz, and operates at /4.
The CPU&MAC/BBIC (IC859) performs switches between the print
antenna on the main board and retractable antenna as well as send/
receive switches by controlling the diversity switch (IC851).
- Receive block
Receive signals from the antenna pass through the diversity switch
(IC851), are amplified by the LNA (Low Noise Amp)(Q851), and input to
the RFIC (IC857).
The RFIC (IC857) integrates a LNA (Low Noise Amp, LNA in the IC857),
a mixer for frequency converter, and a synthesizer generating receive
local signals.
In the RFIC (IC857), input signals are separated into the base band
signals of In-Phase (RxI) and Quadrature (RxQ) and then output.
The base band signal is input to the CPU&MAC/BBIC (IC859) and A/D
converted, and then the data replay is performed.
- Send block
The data frame (data packet), which is generated in the MAC block
integrated in the CPU&MAC/BBIC (IC859), is converted to the In-Phase
(TxI) signal and Quadrature (TxQ) signal and input to the RFIC (IC857).
In the RFIC (IC857), it is converted to the RF signal at the send
frequency band.
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