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A mm-wave BiCMOS back-end metallization switched delay line frequency agile filter is presented. Miniaturization of the delay lines is achieved by using slow-wave propagation modes on shielded CPWs, with a standard BiCMOS process transistors used as on-chip switching elements. A first-order filter is presented, with simulation results indicating on...
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... indicates that fo large phase delay can be ach slow-wave mechanism. power splitters will used from otyping and are considered ideal shown in Figure 14, centre frequency and decrease in the bandwidth of the filter. This strategy is used to emulate the switching of the MOSFET devices to control different phase paths. ...
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Citations
... For instance, such frequency agile filters provide military radars to scan a wide spectrum along a particular frequency band for electronic encounter measure (ECM) applications. Additionally, secure military communication systems such as the frequency hopping transceivers also require the implementation of RF tunable filters [28,29]. The microwave filter tuning mechanism is classified into three major types: mechanical, magnetic and electronic [30]. ...
In the past few years, several satisfying various objectives and designs of reconfigurable integrated microwave filter and antenna have been proposed for wireless communication systems. Several designs are new concepts and techniques, whereas others are inspired from previous works. The improvement concepts of these designs can be reviewed from this compilation of studies. This paper begins with an explanation of the reconfigurable filter, reconfigurable antenna and reconfigurable integrated microwave filter and antenna, followed by discussion on several designs in terms of size, measurement, performance and technology used. Among various designs, reconfigurable on planar structures are extensively used because of their simple design procedures and easy to tune on the desired frequency, bandwidth and attenuation. Most of the existing studies are focusing tunable on single element, i.e. either on filter or antenna side; however, it limits the tunable range and flexibility of the filtering antenna response. An alternative design of filtering antenna can be suggested to produce reconfigurable tuning capabilities on both microwave filter and antenna to produce overall good performance for multifunction operation in RF/microwave applications.
