Design And Analysis Of Selectable Multiband Isolation Using Single Switchable Resonator For RF Switch Application

Wong, Yuin Shen (2019) Design And Analysis Of Selectable Multiband Isolation Using Single Switchable Resonator For RF Switch Application. Project Report. Faculty of Electronic and Computer Engineering, Melaka. (Submitted)

Text (24 Pages) Design and analysis of selectable multiband isolation using single switchable resonator for RF switch application.pdf - Submitted Version Download (391kB)

Abstract

In many wireless communication applications, it is necessary to switch the RF signal path to route and connect to different antennas, amplifiers, and filters. The multiband RF front-end is developed to support several RF front-end systems. High isolation between transmitter and receiver in the RF front-end is one of the key parameters in RF switch design. However, the major concern for multiband isolation switch is increasing of the total current consumption and overall circuit size. In order to achieve a high isolation and at the same time miniature circuit, this project proposes selectable multiband isolation using single switchable resonator in Single Pole Double Throw Switch (SPDT) Switch. The SPDT switches were designed in 2.3 GHz and 3.5 GHz bands. The design involves simulation using ADS software and fabricated using FR4 board. Measurement is necessary for verification with simulation results. As a result, the simulated and measured results showed the return loss is greater than 10dB, insertion loss is less than 3dB and isolation value is higher than 25dB in 2.3 GHz and 3.5 GHz bands. The proposed design is suitable for high power applications with 1 Watt and 10 Watt transmits output.

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