International Symposium on Antennas and Propagation
4 X 4 BEAMFORMING NETWORK PHASE SHIFTER CONTROLLERS
M. R. Abu Bakar, M. F. Abd Kadir, M. R. Che Rose, M. K. Suaidi, M. Z. A. Abd Aziz,
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This paper is present the design of switch and phase shifters for development of 4 X 4 beamforming network phase shifter and controllers. PIN diode will be use as a switch to control RF signal and PIC as a switch controller. There are two type of method to control the switch, by time and by RF power. In this project, PIC 16F877 (Microchip Company) will be used to control the time of switching. This controller will be design in separate board and will used C language for programming. Beside that DC biasing circuit also will be constructing to control the PIN diode. The operating frequencies are selected at 2.4 GHz.