A novel elliptical patch resonator for
a compact bandpass filter with tunable bandwidth is presented. This bandpass filter
has the advantage of great flexibility in which the center frequency can be
changed easily. The bandwidth of this filter can be modified by simply changing
one variable, and this makes the proposed design unique. The order of the
elliptical patch resonator can be increased, and three types of different
orders of the same design are compared. The proposed filter can be used for
future compact advanced wireless communication systems.
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