![background image](http://html.mh-extra.com/html/panasonic/kx-tg5571bxm/kx-tg5571bxm_service-manual_279721077.webp)
15.5. 5.8GHz Power Amplifier and Antenna Switch Circuit
This block amplifies power of 5.8GHz TX signal.
5.8GHz TX signal from 5.8GHz Converter circuit is filtered by 5.8GHz-BPF FL811, and amplified by Power amplifier (PA) block of
IC851, and then passes through internal 5.8GHz-BPF. After that, it is supplied to Antenna Switch block of IC851.
This block selects the TX 5.8GHz signal or RX 5.8G signal, and connect to Antenna terminal.
V_PA is approximately 4.0V at Base Unit, and 3.3V at Handset.
<Base Unit>
IC851 includes Switches for High frequency signals, and controlled by ANT0 signal and ANT 1 signal from DSP.
DSP is checking RSSI (Received Signal Strength Indicator) signal, and selects better condition Antenna from two antennas.
At the TX mode 5.8GHz TX signal from 5.8GHz PA block leads to selected Antenna terminal, at the RX mode 5.8GHz RX signal
from selected Antenna terminal leads to 5.8GHz LNA circuit.
<Handset>
IC851 includes Switch for High frequency signals, and controlled by PA_CONT signal and RX_EN signal from DSP. At the TX
mode 5.8GHz TX signal from 5.8GHz PA block leads to Antenna terminal, at the RX mode 5.8GHz RX signal from Antenna terminal
leads to 5.8GHz LNA circuit.
77
KX-TG5571BXM / KX-TGA550BXM
Содержание KX-TG5571BXM
Страница 8: ...4 2 Location of Controls 4 2 1 Base Unit 8 KX TG5571BXM KX TGA550BXM ...
Страница 9: ...4 2 2 Handset 4 2 3 Charger Unit for Optional Handset 9 KX TG5571BXM KX TGA550BXM ...
Страница 10: ...4 3 Displays 4 3 1 Display Items 4 3 2 Menu Icons 10 KX TG5571BXM KX TGA550BXM ...
Страница 11: ...4 3 3 Troubleshooting Handset LCD 11 KX TG5571BXM KX TGA550BXM ...
Страница 12: ...12 KX TG5571BXM KX TGA550BXM ...
Страница 13: ...4 4 Settings 4 4 1 Connections 13 KX TG5571BXM KX TGA550BXM ...
Страница 14: ...4 4 2 Guide to Handset Programming 14 KX TG5571BXM KX TGA550BXM ...
Страница 15: ...15 KX TG5571BXM KX TGA550BXM ...
Страница 17: ...4 4 4 Direct Commands 17 KX TG5571BXM KX TGA550BXM ...
Страница 18: ...18 KX TG5571BXM KX TGA550BXM ...
Страница 19: ...19 KX TG5571BXM KX TGA550BXM ...
Страница 21: ...21 KX TG5571BXM KX TGA550BXM ...
Страница 22: ...22 KX TG5571BXM KX TGA550BXM ...
Страница 23: ...23 KX TG5571BXM KX TGA550BXM ...
Страница 24: ...24 KX TG5571BXM KX TGA550BXM ...
Страница 36: ...7 9 1 1 Canceling the Handset Registration 7 9 1 2 Reregistering the Handset 36 KX TG5571BXM KX TGA550BXM ...
Страница 40: ...7 9 5 RF DSP Interface Signal Wave Form Test Burst Mode 40 KX TG5571BXM KX TGA550BXM ...
Страница 41: ... Test Burst Mode 41 KX TG5571BXM KX TGA550BXM ...
Страница 80: ...17 2 Power Supply Circuit Voltage is supplied separately to each block 80 KX TG5571BXM KX TGA550BXM ...
Страница 84: ...19 SIGNAL ROUTE Each signal route is as follows 84 KX TG5571BXM KX TGA550BXM ...
Страница 85: ...Each signal route is as follows RF part signal route 85 KX TG5571BXM KX TGA550BXM ...
Страница 88: ...22 EXPLANATION OF IC TERMINALS RF PART 22 1 IC701 88 KX TG5571BXM KX TGA550BXM ...
Страница 89: ...22 2 IC801 Backside Terminal GND 89 KX TG5571BXM KX TGA550BXM ...
Страница 90: ...22 3 IC851 Backside Terminal GND 90 KX TG5571BXM KX TGA550BXM ...
Страница 93: ...24 CABINET AND ELECTRICAL PARTS BASE UNIT 93 KX TG5571BXM KX TGA550BXM ...
Страница 94: ...25 CABINET AND ELECTRICAL PARTS HANDSET 94 KX TG5571BXM KX TGA550BXM ...
Страница 95: ...26 CABINET AND ELECTRICAL PARTS CHARGER UNIT 95 KX TG5571BXM KX TGA550BXM ...
Страница 96: ...27 ACCESSORIES AND PACKING MATERIALS 27 1 KX TG5571BXM 96 KX TG5571BXM KX TGA550BXM ...
Страница 97: ...27 2 KX TGA550BXM Optional Set 97 KX TG5571BXM KX TGA550BXM ...
Страница 98: ...28 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 28 1 Base Unit 28 2 Handset 98 KX TG5571BXM KX TGA550BXM ...
Страница 99: ...28 3 Charger Unit 99 KX TG5571BXM KX TGA550BXM ...
Страница 106: ...Memo 106 KX TG5571BXM KX TGA550BXM ...
Страница 113: ...Memo 113 KX TG5571BXM KX TGA550BXM ...
Страница 124: ...Memo KX TG5571BXM KX TGA550BXM 124 ...