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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Microwave technology
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Tuneable Film Bulk Acoustic Wave Resonators (Paperback, 2013 ed.)
Loot Price: R3,579
Discovery Miles 35 790
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Tuneable Film Bulk Acoustic Wave Resonators (Paperback, 2013 ed.)
Series: Engineering Materials and Processes
Expected to ship within 10 - 15 working days
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To handle many standards and ever increasing bandwidth
requirements, large number of filters and switches are used in
transceivers of modern wireless communications systems. It makes
the cost, performance, form factor, and power consumption of these
systems, including cellular phones, critical issues. At present,
the fixed frequency filter banks based on Film Bulk Acoustic
Resonators (FBAR) are regarded as one of the most promising
technologies to address performance -form factor-cost issues. Even
though the FBARs improve the overall performances the complexity of
these systems remains high. Attempts are being made to exclude some
of the filters by bringing the digital signal processing (including
channel selection) as close to the antennas as possible. However
handling the increased interference levels is unrealistic for
low-cost battery operated radios. Replacing fixed frequency filter
banks by one tuneable filter is the most desired and widely
considered scenario. As an example, development of the software
based cognitive radios is largely hindered by the lack of adequate
agile components, first of all tuneable filters. In this sense the
electrically switchable and tuneable FBARs are the most promising
components to address the complex cost-performance issues in agile
microwave transceivers, smart wireless sensor networks etc.
Tuneable Film Bulk Acoustic Wave Resonators discusses FBAR need,
physics, designs, modelling, fabrication and applications. Tuning
of the resonant frequency of the FBARs is considered. Switchable
and tuneable FBARs based on electric field induced piezoelectric
effect in paraelectric phase ferroelectrics are covered. The
resonance of these resonators may be electrically switched on and
off and tuned without hysteresis. The book is aimed at microwave
and sensor specialists in the industry and graduate students.
Readers will learn about principles of operation and possibilities
of the switchable and tuneable FBARs, and will be given general
guidelines for designing, fabrication and applications of these
devices.
General
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