Cell phone jammer will not interfere with other wiring

Capacity of varactor diode CR300 in change TXVCO oscillation frequency of the output from the 8-pin to control the output from Q300 of C 890-915MHz transmitted signal by the amplifier Q302 Q301 former level amplification and Q302 to promote into the amplified signal into the 1 foot of the antenna U400 from the U400 4 # send antenna shoot out. In the logic part, received RXI, RXQ, analog baseband signal is completed within the modem U501 D / A conversion, decryption, and adaptive equalization after digital baseband signal into the CPU from the U501 # 10 #, the CPU channel decoder, remove the error correction code source, and take real control information to recover the voice data through the data lines and address lines, sent to the voice device U801 decode. The direction above and under the antenna of cell phone jammer will be the area where the shielding signal is the weakest.  The digital voice signal sent to the PCM decoder U803's # 8 from # 78 in the U801. Digital voice signal in the PCM decoder to complete decompression and A / D converter, digital volume locator, the received signal, the volume be adjusted again by U803's # 4, the output analog audio signals to the U900 # 6 and 21 #. Ringer made the audio signal to drive the output from U900 4 # 5 # 6 # input ring signal amplification by the ringing of the internal drive support, input from the 21 # after the internal audio amplifier 19 # 20 # output the amplified voice signal to push the earpiece sound. When our users in his speech, the acoustic power of the voice through the handset after the transition into power ICs U0-9 #.
By the internal audio amplification, the amplified analog audio signal from the output of the 10 #. The signal in the # 18 sent to the PCM codec U803 U803 internal completion of PCM coding. To the voice encoder 801 89 # 13 # output PCM signal into voice data and address lines U801 within the voice data flow pounds to the central processing unit U701, the voice data stream after the the U701 completion of channel coding, U701 of the 11 # 4 # sent to the modulation solution Temple device U501, D / A conversion, encryption and other processing signals in U501, will produce four modulated signals TXIP, TXIN TXQP, TXQN sent to the transceiver IF circuit U201. to generate emission IF ITX form factor, the IF signal. cell phone jammer will not interfere with other wiring.
As for the power part of the future once we fitted to the cell phone battery, electronics Q999 opened up; 32D54 # 48 and the positive power supply is turned on, if we press the power button once, the U900 features the 24 # goes low, U900 features of scored a solid output four voltage R275V, L2.75V, R4.75V, L5.0V. 30 # generate the reset signal and 27 # boot-request signal. Together constitute the 13MHz clock oscillator 13MHz clock by the 32D53 and 13MHz crystal and transformer diode, sent from the output of the first 59 # 17 # of the buffer interface circuit U703 32D53 internal shaping and amplification, and from U703 # 37 sent to the CPU 50 # to send the boot to maintain the signal to the U900's 29 #, to maintain normal boot. The shielding signal in the area along the pointing direction of antenna of mobile phone jammer will be respectively weaker.
Addition, Q202, Q203 collector voltage of 2.75V, the supply of 32D53 internal receive or transmit power to the circuit. U900 # 3 sent L5.0V to the negative voltage circuits. Version of the SIM card and PCM codec U803 also L5.0V supply. U900 Section # 28 send the R2.75V of voltage to the logic block power supply. U900 the first 28 # send 2.75V voltage supply the RF part. U900 the first 41 # send R4.75V voltage 32D53 generation of power to the transceiver IF circuit, the U900 features 37 # output VXW convert supply voltage to the emitter of Q202 and Q203. There will be a small area at two sides of and behind the directional antenna of cell jammer to be covered by the signal.