March 2009 [Components] SIR Approach Yields UWB Microstrip Filter Ultrawideband (UWB) communications technology provides a practical means of low-power, high-data-rate transmissions over short distances, such as in personal-area networks (PANs). The technology is also suitable for longer-range applications, such as radar systems. High-performance filters with adequate bandwidths are essential in order for UWB systems to co-exist with current wireless communications systems. The design of such filters is not... February 2009 [Materials] Form Bandpass Filters On Glass Substrates Glass is good for more than just windows: in recent years, the material has attracted attention for its dielectric properties and cost-effectiveness as a high-frequency-circuit substrate. It features low circuit losses over wide frequency and temperature ranges and is suitable for circuit fabrication using standard integrated-circuit (IC) planar manufacturing methods. When evaluated for several high-frequency filter topologies, the performance of glass-based components has... June 2008 [Components] Coupled Stubs Support Microstrip Bandbass Filter Filters are essential in separating and sorting signals in communications systems. Filters are essentially two-port networks that can modify the frequency response of a communications system. In some applications, such as communications satellites and mobile communications devices, it is critical that filters be designed with small size and light weight. Planar filter geometries are well suited for meeting these requirements. The approach presented... April 2006 [Components] Microstrip Filters Provide High Harmonic Suppression Harmonic filters are invaluable for removing unwanted higher-order harmonic signals from microwave multipliers and mixers in receiver designs, among other applications. Although a variety of filter configurations have been developed to reduce the level of harmonic signals, the authors investigated two varieties of bandpass filter designed for good harmonic suppression. Parallel coupled line sections were employed in both filter approaches, with phase equalization of coupled resonators... |
||||||||
Resources

RSS
Electronic Design