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Design and Simulation of a Vector Modulator Operating at 2 GHz Frequency

In today's radio frequency technology, Vector Modulator which is planned to operate at 2 GHz frequency cannot be obtained exactly and results are obtained close to the desired value. These results can cause negligible errors in noncritical electronic systems. However, these errors become critical in military applications and vector modulator design is gaining more importance. The aim of this project is to minimize insertion loss in the vector modulator, balance phase and amplitude, and maximize bandwidth. The operating frequency of the system is 2 GHz and the input signal will be sinusoidal signal. Based on the resulting errors, a balanced vector modulator whose output is as close as possible to the desired value will be designed. The design of the thesis will use square hybrid coupler, 0 / 180 phase shifters, phase shift attenuators and Wilkinson power combiner. Thus, in the frequency domain, the desired angles and amplitudes will be properly obtained at a frequency of 2 GHz supported by simulation studies.