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This paper present a new design of frequency reconfigurable elevated patch antenna without using RF MEMS switch. It is well known that the patch height of the elevated patch antenna is one of the major factors in determining the antenna resonant frequency. By decreasing the patch height, the fringing fields from the patch edges will decrease, which decreases the extension in the patch length and hence...
This paper proposes a two-stage recursive least squares algorithm for output error models. systems are considered multiple-input single-output, which is represented by autoregressive models. The first step of the proposed algorithm is to identify algorithm model. Second one is to implement these identification methods at thermal power plant, whose nominal power output is 320 MW. The water level measurements...
This paper presents a survey of reducing surface waves in printed and microstrip antennas on substrates which may be electrically thick, as would be the case for printed antennas at millimeter wave frequencies. The surface wave loss is one of the well-known problems that researchers around the world are trying to overcome. This paper defines the problem and describes the main techniques proposed to...
This paper presents a novel G-band (140GHz – 220GHz) integrated antenna. The antenna incorporates a newly proposed elevated center coplanar waveguide (EC-CPW) fed elevated patch antenna on a high dielectric substrate (GaAs). The proposed antenna consists of an (EC-CPW) feed line, λ/4 transformer used for matching, supporting posts, and a 5.5µm height elevated radiating patch. The antenna topology...
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