System Components section of TX , HP
System Components section of TX , HP
1. VCO frequency form will be processed by the RF IC to form four output signals, ie two signals DCS and the two GSM-TX-TX to forward it to the filter in the TX (transmission). VCO jg function as Power Detector to regulate the voltage pulses of RF IC in sending data to the CPU.
2. In the fourth filter output signal that is sent by the RF IC in the form of a two-TX signal, namely DCS and GSM to be forwarded to the IC PA
3. In the second PA signal IC is amplified for transmission and then forwarded to the TX filter.
4. In the Filter Both signals are filtered and forwarded to the Antenna Switch
5. Antenna switch that serves as a terminal and combining both GSM and DCS signals to be transmitted via Antenna
On the whole section is assisted by mobile phone signals at the amplifier IC Audio initial sound signal coming from the reception (RX) to be forwarded at the beginning of Loud Speakers and Amplifiers voice signal coming from the microphone to be forwarded goto the transmitting (TX) through IC RF / IF.
26 Mhz crystal to function as plant signals to control signals on the RF IC is sent to IC Audio in the AFC (Automatic Frequency Control) as well as the voltage regulator in accordance with the needs associated components that are controlled by the CPU.
1. VCO frequency form will be processed by the RF IC to form four output signals, ie two signals DCS and the two GSM-TX-TX to forward it to the filter in the TX (transmission). VCO jg function as Power Detector to regulate the voltage pulses of RF IC in sending data to the CPU.
2. In the fourth filter output signal that is sent by the RF IC in the form of a two-TX signal, namely DCS and GSM to be forwarded to the IC PA
3. In the second PA signal IC is amplified for transmission and then forwarded to the TX filter.
4. In the Filter Both signals are filtered and forwarded to the Antenna Switch
5. Antenna switch that serves as a terminal and combining both GSM and DCS signals to be transmitted via Antenna
On the whole section is assisted by mobile phone signals at the amplifier IC Audio initial sound signal coming from the reception (RX) to be forwarded at the beginning of Loud Speakers and Amplifiers voice signal coming from the microphone to be forwarded goto the transmitting (TX) through IC RF / IF.
26 Mhz crystal to function as plant signals to control signals on the RF IC is sent to IC Audio in the AFC (Automatic Frequency Control) as well as the voltage regulator in accordance with the needs associated components that are controlled by the CPU.
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