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The article focuses on a microwave antenna which was designed with coplanar-avenged (CPW) feed that offers radiation with enough gain to suit ultrawideband (UWB) communications applications. By employing a three-layer frequency-selective surface (FSS), the antenna can get more gain, enhancing the gain by 4 to 5 dB while having same wide impedance bandwidth.

The article presents information on the design of a compact fractal antenna based on the Appollian-shaped gasket with coplanar-waveguide (CPW) feed. This antenna can be used for emerging applications using the ultrawideband (UWB) frequency range from approximately 3.1 to 10.6 GHz, in wireless communications and medical-imaging systems. It offers an experimental impedance bandwidth of 133.905% from 2.89 to 14.60 GHz.

Describes the design of a quasi-planar combline bandpass filter using multicoupled suspended substrate striplines. Approximate design for combline filters; Specialized computer programs that analyze multicoupled microstrip lines; Design and fabrication of printed circuit combline bandpass filters.

Opinion. Talks about the document revision process at the American Institute of Architects. Details on what activities owners can require of contractors; Information on the provisions of the revised A201.