34
KX-TG6700B/KX-TG6702B/KX-TGA670B
4.9.4.
5.8 GHz PA (Power Amplifier), 5.8 GHz LNA (Low Noise Amplifier) and Antenna
Switch Circuit
PA block amplifies power of 5.8 GHz TX signal.
5.8 GHz TX signal from 5.8 GHz Converter circuit is filtered by 5.8 GHz-BPF FL811, and amplified by Power amplifier (PA) block of
IC851. After that, it is supplied to Antenna Switch block of IC851. V_PA is approximately 4.0 V at Base Unit, and 3.1 V at Handset.
LNA block amplifies receiving 5.8 GHz signal.
5.8 GHz RX signal from Antenna Switch block of IC851 amplified by LNA (Low Noise Amplifier) block of IC851 and filtered by HPF
(FL821), and then supplied to 5.8 GHz Converter circuit.
Antenna Switch block selects the TX 5.8 GHz signal or RX 5.8 G signal, and connect to Antenna terminal.
Note:
The exposed GND_PLATE on the bottom of the IC851 supplies the circuit ground(s) for the entire chip. It is very important that
a good solder connection is made between this GND_PLATE and the ground plane of the PCB underlying the IC851.
<Base Unit>
IC851 includes Switches for High frequency signals, and controlled by ANT0 signal and ANT1 signal from DSP.
DSP is checking RSSI (Received Signal Strength Indicator) signal, and selects better condition Antenna from two antennas.
At the TX mode 5.8 GHz TX signal from 5.8 GHz PA block leads to selected Antenna terminal, at the RX mode 5.8 GHz RX signal
from selected Antenna terminal leads to 5.8 GHz LNA block.
<Handset>
IC851 includes Switch for High frequency signals, and controlled by PA_CONT signal and RX_EN signal from DSP. At the TX mode
5.8 GHz TX signal from 5.8 GHz PA block leads to Antenna terminal, at the RX mode 5.8 GHz RX signal from Antenna terminal
leads to 5.8 GHz LNA block.
Содержание KX-TG6700B - Cordless Phone - Operation
Страница 2: ...2 KX TG6700B KX TG6702B KX TGA670B ...
Страница 6: ...6 KX TG6700B KX TG6702B KX TGA670B 3 Specifications ...
Страница 27: ...27 KX TG6700B KX TG6702B KX TGA670B 4 8 2 Power Supply Circuit Voltage is supplied separately to each block ...
Страница 36: ...36 KX TG6700B KX TG6702B KX TGA670B 4 11 Signal Route Each signal route is as follows ...
Страница 37: ...37 KX TG6700B KX TG6702B KX TGA670B RF part signal route ...
Страница 38: ...38 KX TG6700B KX TG6702B KX TGA670B 5 Location of Controls and Components 5 1 Controls 5 1 1 Base Unit ...
Страница 41: ...41 KX TG6700B KX TG6702B KX TGA670B 6 1 2 Connecting the Telephone Line Cord ...
Страница 42: ...42 KX TG6700B KX TG6702B KX TGA670B 6 1 2 1 If you subscribe to a DSL service ...
Страница 45: ...45 KX TG6700B KX TG6702B KX TGA670B 7 Operation Instructions 7 1 Symbols Used in These Operating Instructions ...
Страница 47: ...47 KX TG6700B KX TG6702B KX TGA670B ...
Страница 48: ...48 KX TG6700B KX TG6702B KX TGA670B 7 2 2 Programming Using the Direct Commands ...
Страница 49: ...49 KX TG6700B KX TG6702B KX TGA670B ...
Страница 50: ...50 KX TG6700B KX TG6702B KX TGA670B 7 3 Error Messages ...
Страница 52: ...52 KX TG6700B KX TG6702B KX TGA670B ...
Страница 53: ...53 KX TG6700B KX TG6702B KX TGA670B ...
Страница 54: ...54 KX TG6700B KX TG6702B KX TGA670B ...
Страница 74: ...74 KX TG6700B KX TG6702B KX TGA670B 10 1 9 5 RF DSP Interface Signal Wave Form Test Burst Mode ...
Страница 75: ...75 KX TG6700B KX TG6702B KX TGA670B Test Burst Mode ...
Страница 82: ...82 KX TG6700B KX TG6702B KX TGA670B 11 1 2 Handset ...
Страница 83: ...83 KX TG6700B KX TG6702B KX TGA670B 11 1 3 Charger Unit ...
Страница 84: ...84 KX TG6700B KX TG6702B KX TGA670B 11 2 Fix the LCD and the Receiver Guide to the Main P C Board Handset ...
Страница 95: ...95 KX TG6700B KX TG6702B KX TGA670B Memo ...
Страница 99: ...99 KX TG6700B KX TG6702B KX TGA670B Memo ...
Страница 108: ...108 KX TG6700B KX TG6702B KX TGA670B Memo ...
Страница 118: ...118 KX TG6700B KX TG6702B KX TGA670B 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...
Страница 119: ...119 KX TG6700B KX TG6702B KX TGA670B 15 3 2 IC801 Backside Terminal GND ...
Страница 120: ...120 KX TG6700B KX TG6702B KX TGA670B 15 3 3 IC851 Backside Terminal GND ...
Страница 124: ...124 KX TG6700B KX TG6702B KX TGA670B 16 3 Cabinet and Electrical Parts Charger Unit ...
Страница 125: ...125 KX TG6700B KX TG6702B KX TGA670B 16 4 Accessories and Packing Materials 16 4 1 KX TG6700B ...
Страница 126: ...126 KX TG6700B KX TG6702B KX TGA670B 16 4 2 KX TG6702B ...
Страница 127: ...127 KX TG6700B KX TG6702B KX TGA670B 16 4 3 KX TGA670B ...