The omnidirectional antenna of cell phone jammer

Cell phone has been able to communicate with each other, I believe that it is by the results of the three-part coordination of these three parts respectively for the RF part, the logical part and power part, to understand the cell phone works in fact as long as the understanding of these three parts is how it works on , following the writer's works in this three-part introduction respectively. The directional antenna information of cell phone jammer  should be described in details.
Usually the RF section, in turn, accept the signal part and send a signal part. The cell phone signal is received, the first use of the antenna 935-960MHz RF signal received by the U400, SW363, the transmit signal of the received signal to separate, so that the transceiver without disturbing each other. Input from the fourth foot of the U400, the output of the fifth foot, into the receiver front-end circuit. U400's work status by the potential control of the third foot, the potential of the third foot be CPU TXON, signal control RXON. The RF antenna switch signal first passes through the filter of the bandpass filter FL451, and then into the high-frequency amplification amplification tube Q418, Q418 output FL452 filter evacuation Q420 mixing tube mixer. The omnidirectional antenna of cell phone jammer  is common in normal use.
The local oscillation signal generated by RXVCO very FL453 filter evacuation Q420 base mixer, whichever is the difference between the IF signal from the collector output of the Q420 153MHz, 153MHz signal of the pure in diesel after FL420 filter, 31 feet of the larger evacuation U201 has now been Q421, 153MHz IF signal with 153MHz carrier signal demodulation produce RXI and RXQ, analog baseband signal in the 32D53, send U501's 14 # and 15 # U201 46 # and 48 # . A / D converter the evacuation digital signal processor for further processing in U501. 153MHz carrier U201 of the peripheral circuit 41 #, 42 #, 43 # then posed 306MHz oscillator circuit, the formation of the 306MHz Hui wave signal to form a 153MHz carrier frequency by two. The signal covering range of omnidirectional antenna of cell phone jammer can be generally considered as a spherical area.
Send part, from the 501 21 #, 22 #, 23 #, 24 # output TXIN, TXIP, TXQN, TXQP emission band signal into U201 61 #, 62 #, 63 #, 64 #. U201 6 # 7 # 10 # external a 216MHz VCO, resulting in the 216MHz carrier signal, the signal divider U201 within the frequency to generate the 108MHz transmit IF signal. Four modulated signals in U201 within 4 108MHz carrier modulated output from 4 feet to the U300. The U300 completion of launch phase gentle frequency sampling signal and TXVCO of whichever is the difference between the 108MHz signal input with 4 TXIF phase, resulting in the phase error voltage. It requires that the omnidirectional antenna of cell phone jammer  can have the biggest signal covering radius.