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In this paper we investigate multipath propagation during rain for broadband fixed wireless access (BFWA) employed in dense urban areas. The geometrical based single bounce elliptical (GBSBE) channel model was used to estimate channel parameters such as power, delay, angle of departure (AOD) and angle of arrival (AOA) of each multipath component. Depending on the spatial variability of rain, the channel...
The paper presents some most important design issues of antennas with modelled monopulse radiation pattern in both azimuth and elevation, especially of dielectric substrate microstripe antenna structures. An approach to optimisation of the antenna patterns is discussed and an example of circular antenna array solution is presented. The issue of feeding such antenna arrays is discussed. The solution...
This paper presents a broadband pattern synthesis technique which steers a broad null in a given sector using a constraint derived from an integrated power response over the sector, specifies the frequency response in an arbitrary look direction without using presteering delays and cancels unwanted directional interferences by minimizing the mean output power of the processor.
This paper presents a broadband antenna array pattern synthesis technique with the capability to steer a main beam of specified frequency response in a desired direction without presteering the array. Sidelobes are controlled using a weighting function in the integrated power response of the array in such a way that the array response drops as the distance from the look direction increases. Using...
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