Gsm Jamming Communication Receive Components Research

The primary work of this thesis is the research of T/R radio frequency component used in GSM communication jammer,the working frequency of this component is925MHz-960MHz,the total gain of receiving channel is over50dB,while its noise figure is below5dB,IF output frequency is160MHz,the maximum output power of transmit channel is43dBm,the adjustable gain range is more than30dB.The main working of this thesis is as following:1. Analyze the technical index of T/R front-end;2.In light with the technical index,choose and design the composition of GSM communication jammer T/R component,allocate the index of the system’s modules with reason in connection with the technical requirement,and pick the right chip;3. Estimate the whole system link,simulate and optimize the circuit,and draw the schematic and PCB;4.Consulting the assigning index of the front-end key modules,discuss the principle and function of the receiver’s front-end key modules specifically,analyze the chip got picked,and fulfill the design simulation and optimization,which including: LNA,mixer,filter and amplifier with AGC.5.For the electromagnetic compatibility and anti-intermodulation in the T/R PCB design,illustrate the effect for RF front-end of different wiring mode thoroughly,then optimize the circuit utilizing the above result.6.Fulfill the GSM communication jammer T/R component prototype.