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IMPROVING CRYSTAL RESONATORS WITH NEW MATERIALS.
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Accurate time and frequency standards depend critically on crystal resonators made of quartz because this material has extremely low internal dissipation of mechanical energy. This dissipation is measured by the Q of the resonator which is typically about three million for a 5 MHz device. Achievement of this high a Q value was the result of extensive research in the 1950s into the mechanism of energy loss and the development of techniques to eliminate impurities and to grow more pe...
Related newspaper, magazine, and journal articles from HighBeam Research
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IMPROVING CRYSTAL RESONATORS WITH NEW MATERIALS.
Journal of Research of the National Institute of Standards and Technology
; Accurate time and frequency standards depend critically on crystal resonators made of quartz because this material has extremely low internal dissipation of mechanical energy. This dissipation is measured by the Q of the resonator which is typically about three million for a 5 MHz device.
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Crystal resonators meet TPMS application requirements.(tire-pressure-monitor-system)(NDK Co Ltd)(Brief Article)
EDN
; Providing frequency control for transmitters or receivers in TPMS (tire-pressure-monitor-system) applications, the NX5032SD and NX8045GB crystal resonators meet tough shock, vibration drop, and acceleration requirements. The NX5032SD measures 5x 3.2 x 1 mm and has a 9.84- to 40-MHz frequency range.
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Quartz Crystal Resonators Available For Handheld Wireless Devices.(Technology Information)(Brief Article)
Electronic Design
; Models in the CC5 series of true SMD quartz crystal resonators come hermetically sealed in packages that measure 4.1 by 1.5 by 0.85 mm. Currently available in a 32.768-kHz frequency, they're designed for small handheld wireless applications. They only require a 1-[mu]W drive level with a typical
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An alternative to quartz oscillators: MEMS.(ELECTRICAL COMPONENTS)
Medical Design
; MEMS oscillators are showing great potential as an alternative to quartz oscillators in many medical applications. Essentially, the output frequency on the MEMS devices is controlled by an internal resonator and an integrated programmable CMOS oscillator circuit. Their good shock and vibration
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SMD quartz resonator.
Designfax
; The micro miniature, hermetically sealed ceramic package of the CC5 series measures 4.1mm x 1.5mm x 0.85mm. Currently available in a 32.768 kHz frequency, the crystal resonators require a drive level of only 1 [mu]W with [pm]3 ppm aging typical. It is shock-resistant to 5000g, and vibration
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Transceiver with DCXO: Silicon Laboratories Inc. (New Products).
Wireless Design & Development
; The Aero+[TM] transceiver brings integration to multi-band GSM digital cellular handsets and GPRS voice and data terminals. The Aero+ DCXO feature enables handset developers to use low-cost crystal resonators instead of VC-TCXO modules. The transceiver integrates the IF SAW filter, external LNAs,
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Piezoelectric ceramics: science meets pottery: these small and strong materials offer a wide frequency range, suiting a variety of applications and specific design needs without sacrificing performance.(engineering essentials)
Electronic Design
; Electronic engineers are no strangers to odd-sounding and difficult-to-pronounce methods and materials. However, the words piezoelectric ceramics still trip up even the most experienced designers. And why not? These materials are relatively new to the world of electronics. Many engineers are still
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MEMS GENERATION TAKES ITS PLACE BESIDE QUARTZ.
Electro Manufacturing
; For decades an accurate oscillator utilizing a silicon resonator remained an elusive technological dream as research revealed its potential as an alternative to quartz oscillators without actually proving its worth. Recent MEMS (micro-electro-mechanical systems) resonator breakthroughs, such as
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The MEMS generation takes its place beside quartz.(SPECIAL FEATURE)
Fiber Optics Weekly Update
; For decades, an accurate oscillator using a silicon resonator remained an elusive technological dream as research revealed its potential as an alternative to quartz oscillators without actually proving its worth. Recent MEMS (microelectromechanical systems) resonator breakthroughs, such as improved
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75 [omega] Power Splitter/Combiner.(Brief Article)
Microwave Journal
; The model ZFSC-3-4-75 power splitter/combiner operates in 75 [omega] circuits within the 1 to 1000 MHz frequency range with midband insertion loss of 0.4 dB (above 4.8 dB (typ Midband isolation is 27 dB and input/output SWR is 1.2/1.3 (typ). Maximum midband amplitude is 0.7 dB and phase unbalance
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