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An integrated design of a band-pass filter and a patch antenna is proposed in this paper by using an aperture coupled structure. Traditionally, the microwave filter and antenna are designed separately using 50 Ohm interface and then connected by transmission lines, which lead to a large size and more loss. Here, the antenna and microwave filter are directly integrated without a 50 Ohm interface between...
This paper presents a novel reconfigurable bandstop filter for future wideband wireless communication systems. The filter consists of a parallel coupled-line and two varactor diodes etched onto standard FR4 board. The structure of this filter is simple and could easily be integrated with other microwave circuitry. Measurement results show that the stopband of the filter can be tuned from 0.47GHz to...
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