By Ken-Ya Hashimoto
For years, floor acoustic wave (SAW) filters were customary as radio frequency front-end filters and duplexers for cellular verbal exchange structures. lately, bulk acoustic wave (BAW) filters are gaining extra popularly for his or her functionality advantages and are being applied an increasing number of within the layout of state-of-the-art state-of-the-art cellular units and platforms. This well timed booklet provides a radical evaluate of RF BAW filters, overlaying an enormous variety of applied sciences, optimum equipment layout, filter out topologies, packaging, fabrication approaches, and top of the range piezoelectric skinny motion pictures. additionally, the ebook deals engineers useful suggestions on integrating BAW filters in RF structures.
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Additional info for Rf Bulk Acoustic Wave Filters for Communications (Artech House Microwave Library)
Sample text
This configuration is used in high-frequency BAW resonator filters. 16(b) the resonators are also used in the shunt branches. As will be described later, the use of shunt resonators gives lower insertion loss and a symmetrical passband. This is the legacy filter technology that is widely used in high-frequency applications today. In practice, more or fewer resonator sections are employed. 3 Lattice Filter The lattice filter is another legacy filter configuration that is of increasing interest for high-frequency applications wherein the direct connection with RF ICs is best done with balanced networks.
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