Pattern nulling

This paper proposes an efficient beamformer based on the binary bat algorithm for uniform rectangular arrays of half-wavelength dipoles. The proposed beamformer utilizes the technique of controlling only the amplitude of excitation weights to produce optimal patterns with minimal distortions in sidelobe regions while maintaining the main beam and imposing nulls in the directions of interfering signals.

5p vifalcon 18-05-2023 8 4   Download

In this paper, a feeding network based on Bat algorithm for pattern-nulling of a linear antenna array will be proposed. Bat algorithm has been used for calculating the amplitude of input weights for a uniform linear antenna array (ULA array) to place a wide null at a pre-defined position. A new feeding network structure to implement the excitation weights for a 12x1 ULA array will be proposed, designed and simulated.

4p wangziyi_1307 26-04-2022 12 1   Download

In this paper, we propose an adaptive beamformer based on a binary bat algorithm (BBA) for pattern nulling of uniformly linear array (ULA) antennas. The optimized array pattern is obtained by controlling the phase of each array excitation weight.

6p viericschmid 12-01-2022 19 2   Download

When biomolecules physically interact, natural selection operates on them jointly. Contacting positions in protein and RNA structures exhibit correlated patterns of sequence evolution due to constraints imposed by the interaction, and molecular arms races can develop between interacting proteins in pathogens and their hosts.

18p vikentucky2711 24-11-2020 3 1   Download

Performing a statistical test requires a null hypothesis. In cancer genomics, a key challenge is the fast generation of accurate somatic mutational landscapes that can be used as a realistic null hypothesis for making biological discoveries.

10p vicolorado2711 22-10-2020 11 1   Download

This paper reports work in progress on a sentence generation model which attempts to emulate certain language output patterns of children between the ages of one and one-half and three years. In particular, the model addresses the issue of why missing or phonetically "null" subjects appear as often as they do in the speech of young Englishspeaking children. It will also be used to examine why other patterns of output appear in the speech of children learning languages such as Italian and Chinese.

3p bunmoc_1 20-04-2013 24 2   Download

52 Chapter 3 Your First Handler and Beyond Event Handling in Java When performance is important, Java can be used in place of Groovy for event handling. We discuss Java in more detail in later chapters, but the pattern is similar to Groovy and PHP. You need to create a class with a null constructor to handle the requests, with naming corresponding to the resource. So, we could create java/bookmarks.java like Listing 3.9. Listing 3.9 Java Event Handler public class Bookmarks { public void onGET() { ... } public void onPOST() { ... } public void onPUT() { ... } public void onDELETE() { ..

10p yukogaru14 30-11-2010 44 5   Download