RECONFIGURABLE RF FILTER FOR MOBILE DEVICE

RECONFIGURABLE RF FILTER FOR MOBILE DEVICE
Author(s):
ABIRAMASUNDARI S, Meenakshi Sundaram V, Logeshwari A
Keywords:
wireless communication; dual behavior resonators; multistandard; varactor diode
Abstract
Multistandard devices have increased demand for smart phones with global coverage and the spare allocation of wireless spectrum for cellular applications. The increasing demand of wireless communication applications necessitates RF filters operating in various separated frequency bands such that users can access various services with a single terminal. As the amount of wireless standards and frequency bands grows, the costs, complexity and standards become significant. Tunable filters are aimed at addressing the multiband problem by permitting a single component to handle multiple bands so as to combine multiple frontend signal chains into one. In this paper we proposed a special topology to design reconfigurable RF filters using dual behaviour resonators (DBR) filter topology. A tunable filter is able to switch between GSM, Wi-Fi and LTE reception bands. S-parameter value show good filter performances in terms of insertion loss return loss and bandwidth.
Article Details
Unique Paper ID: 154005 Publication Volume & Issue: Volume 8, Issue 9 Page(s): 439 - 443
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