Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Microwave communication systems"”.
-
Investigation of resonators loaded periodic structures
… has brought about new changes in modern microwave communication systems. As predicted by Veselago some 37 years ago, substances which exhibit simultaneously, negative permittivity ([epsilon]) and negative permeability ([mu]) over a certain range of frequencies would display some unusual …
-
Compact microstrip bandpass filter
In microwave communication systems, the bandpass filter is an essential component, which is usually used in both transmitter and receiver. Parallel-coupled microstrip bandpass filter is one of the most popular filters in communication systems. However, this arrangement of parallel-coupled …
-
Modelling and Measurement of the Diffraction of Microwaves by Buildings
Much of the recent growth in microwave communication systems has occurred within urban areas. Private satellite and point to point microwave services have meant that microwave antennas are a common site on the roofs of offices. With the increase in system density comes the increase in the …
-
An Ultrawideband Dual-Linear Polarization Feed for Solar Microwave Observation
The study of Solar Microwave Bursts (SMB's) emanating from the sun is important from several perspectives. SMB's are well correlated to Coronal Mass Ejections (CME's) and therefore can provide insight into the physics of the sun. SMB's and CME's can interfere with microwave communication systems …
-
Resolution of signal components of a resultant electromagnetic wave received in a multipath field of microwave frequencies
The growing use and demand for microwave communication systems has led to an increase in system density, particularly in urban areas. Consequently this rise has increased the risk of interference. Especially in urban areas the abundant presence of potential obstacles increase the risk of multipath …
-
Modelling and Measurement of the Scatter of Microwaves by Buildings
The growing usage and demand for microwave communications has led to the increase in system density, particularly in urban areas, and consequently to the increase in the probability of mutual interference between systems sharing the same frequency band. Satellite and point to point microwave …
-
A Study and Modelling of the Propagation Effects of Vegetation on Radio Waves at Centimetre-Wavelength Frequencies
… the increase in and more diverse applications of microwave radio communications, the probability of a signal propagating through a medium of vegetation is increased. As a direct result of this demand for microwave communication systems, knowledge is required of the effects of vegetation media on …
-
Photonic RF signal processors
… of processing radiofrequency (RF) or microwave signals in optical domain, which will be a key technology to implement next-generation mobile communication systems and future optical networks. Research activities include design and modelling of novel photonic architectures for …