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Showing 1 to 8 of 8 for “"Bandstop filters"”.
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Synthesis, design, and fabrication techniques for reconfigurable microwave and millimeter-wave filters
… of reconfigurable microwave and millimeter-wave filters for use in such receivers.</p> <p>First, a theoretical framework is developed for absorptive bandstop filters, a new class of bandstop filters which overcomes some of the limitations of traditional tunable bandstop filters caused by the use …
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Integrated Filter Antennas for Wireless Transceivers
… the research carried out on the integration of filters and antennas for wireless transceivers. Filters and antennas are parts of wireless transceivers of all wireless communication systems. Filters and antennas, albeit connected, are separate circuits which take up their own individual space in …
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Compensation technique for nonlinear distortion in RF circuits for multi-standard wireless systems
… as power amplifiers, reconfigurable and tunable filters and modulators, these interfering signals produce nonlinear distortion products which can deform the output signal considerably. Hence it becomes necessary to block these interfering signals using special components. The main objective of …
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The design and realisation of electronically tunable dielectric resonator microstrip filters
… demand for highly selective and frequency agile filters with fast tuning rates. At microwave frequencies above 2GHz, filters that combine both tuning speed and high selectivity are difficult to realise. Unloaded Q values in the range of 1000 are required for reasonable selectivity. At present, …
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Corrosion detection using metal coatings on fiber optic sensors
… optic sensors have demonstrated their ability as bandstop filters, by coupling the fundamental guided mode to circularly symmetric cladding modes. The cladding modes are extremely lossy due to the fiber jacket and bending along the fiber. Losses at discrete wavelengths can be monitored to …
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Single-sided magnetic nanoparticles imaging scanner for early detection of breast cancer
… and concentration. Analogue Bandpass and Bandstop filters were designed for signal excitation and reception. Resovist and Perimag MNPs in liquid and immobilised form were used as tracer materials, which were moved to different spatial positions through the field of view (FOV), to record …
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Ultrawideband and Multi-state Reconfigurable Antennas with Sum and Difference Radiation Patterns
… two switchable and reconfigurable bandpass-to-bandstop filters are used to excite the antenna elements. The whole system is excited by an external commercially available rat-race coupler. In a next step, this design is modified to attain wideband, tunable bandpass, and tunable bandstop …