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Abstract
In the design of highpass filter, the cutoff frequency, the
insertion andreturn losses in the passband, and the attenuation
slope in the stopband are important parameters to be considered.
Moreover, the performances of filters can be improved if the
planar structures are used. In this thesis, the conductor-
backed coplanar waveguide structures are uesd to design the
highpass filter with short circuit stubs and T-junction
structures. In this thesis, the theory of the
design of highpass filter is analyzed firstly. Next, the
symmetrical and asymmetrical coplanar waveguide highpass
filters are designed and realized, respectively. Moreover, the
effects of T-junction and short-end discontinuity structures
are studied and compensatedproperly. Finally, the
characteristics of the filters are measured and compared
with simulation results.
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