Simple technique for the accurate determination of delay-time variations in acoustic-surface-wave structures

Maines, J.D.; Paige, E.G.S.; Saunders, A.F.; Young, A.S.

doi:10.1049/el:19690511

Cited by 61 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…SAW transducers can effect much larger delays in much smaller sizes because the sound waves travel much more slowly [175,176]. As discussed earlier, electrical transmission lines could act as such a delay line; however, in addition to the loss previously mentioned, the required length quickly becomes excessive even for relatively small delays of 1 ns, for the length ℓ = t d /v light , with v light denoting the speed of light in the given medium.…”

Section: Linear or Nonlinear?mentioning

confidence: 99%

“…As discussed earlier, electrical transmission lines could act as such a delay line; however, in addition to the loss previously mentioned, the required length quickly becomes excessive even for relatively small delays of 1 ns, for the length ℓ = t d /v light , with v light denoting the speed of light in the given medium. SAW transducers can effect much larger delays in much smaller sizes because the sound waves travel much more slowly [175,176]. Although such SAW devices are not amenable to standard CMOS processes, one could combine a SAW delay line with a CMOS IC in a multichip module package.…”

Section: Linear or Nonlinear?mentioning

confidence: 99%

“…Plotting (91) in Figure 17 for the values given in Table II(b), we observe the peaks due to the frequency-domain periodicity of the delay line's transfer function. The peaks are observable at higher frequency offsets f m [14]; for discrete-element/ optoelectronic delay-line oscillators, the delay is typically on the order of microseconds [53,56,[175][176][177] (much larger than that achievable on integrated electronic delay lines), so in those cases, the peaks could be observed at much lower offset frequencies. In addition, the larger the delay, the higher the delay-line quality factor and correspondingly the sharpness of the peaks.…”

Section: Delay-line Oscillator Examplementioning

confidence: 99%

See 2 more Smart Citations

Survey of integrated‐circuit‐oscillator phase‐noise analysis

Pankratz

Sánchez-Sinencio

2013

Circuit Theory & Apps

View full text Add to dashboard Cite

This tutorial distills the salient phase-noise analysis concepts and key equations developed over the last 75 years relevant to integrated circuit oscillators. Oscillator phase and amplitude fluctuations have been studied since at least 1938 when Berstein solved the Fokker-Planck equations for the phase/amplitude distributions of a resonant oscillator.The principal contribution of this work is the organized, unified presentation of eclectic phase-noise analysis techniques, facilitating their application to integrated circuit oscillator design. Furthermore, we demonstrate that all these methods boil down to obtaining three things: (1) noise modulation function; (2) noise transfer function; and (3) current-controlled oscillator gain. For each method, this paper provides a short background explanation of the technique, a step-by-step procedure of how to apply the method to hand calculation/computer simulation, and a worked example to demonstrate how to analyze a practical oscillator circuit with that method.This survey article chiefly deals with phase-noise analysis methods, so to restrict its scope, we limit our discussion to the following: (1) analyzing integrated circuit metal-oxide-semiconductor/bipolar junction transistor-based LC, delay, and ring oscillator topologies; (2) considering a few oscillator harmonics in our analysis; (3) analyzing thermal/flicker intrinsic device-noise sources rather than environmental/parametric noise/ wander; (4) providing mainly qualitative amplitude-noise discussions; and (5) omitting measurement methods/phase-noise reduction techniques.We categorize oscillators into one of three varieties, as illustrated in Figure 3: resonant, delay line, or relaxation. First, the resonant oscillator consists of a nonlinear amplifier and a lumped frequencyselective network or resonator, which typically has a band-pass frequency response with a single magnitude peak as indicated conceptually in the figure. This resonator can take the form of an LC tank circuit, dielectric puck, quartz crystal, SAW or bulk acoustic wave transducer, yttrium iron garnet resonator, or ceramic disk resonator to name a few [43,147,148]. IC resonant oscillators typically use LC tanks, although they are often designed to work in concert with an external 874 E. PANKRATZ AND E. SÁNCHEZ-SINENCIO ! ss t ð Þ correspond to the roughly circular trajectory in the figure called a limit cycle [150].Figure 4. Optoelectronic delay-line oscillator. 876 E. PANKRATZ AND E. SÁNCHEZ-SINENCIO For some subtleties of amplitude-noise behavior, see [50,143], where [50] also points out effects of not employing Floquet normalization (cf. Section 4.7).½ =fVoigt ð Þ 2(Gaussian) at small offsets [78,151,152,154]. Chorti also observed that, in general, noise processes with long correlation times tend to create such 'Gaussian' voltage spectra for small frequency offsets f m [151,152]. 4 Note well that, technically, defining spectra for f proves problematic, as it is not stationary and, what is worse, not bounded. This is in fact one reason why the ...

show abstract

Section: Linear or Nonlinear?mentioning

confidence: 99%

Section: Linear or Nonlinear?mentioning

confidence: 99%

Section: Delay-line Oscillator Examplementioning

confidence: 99%

See 1 more Smart Citation

Survey of integrated‐circuit‐oscillator phase‐noise analysis

Pankratz

Sánchez-Sinencio

2013

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Especially for long delay lines (βL 2π), the last two terms can be neglected (see [5] for an evaluation of orders of magnitude), such that, after some algebraic manipulations, we finally obtain the temperature coefficient of the oscillation frequency (TCF):…”

Section: Theorymentioning

confidence: 99%

Substrates for zero temperature coefficient Love wave sensors

Jakoby

Vellekoop²

2000

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

Abstract-Microacoustic Love wave delay lines show high sensitivity to perturbations such as mass depositions on the wave-guide surface. Furthermore, because of their shear polarization, Love waves are ideally suited for liquid sensing applications. Using a Love wave delay line as feedback element in an oscillator allows the realization of viscosity sensors, and, using a chemical interface, chemical sensors, where the output signal is the oscillation frequency. To achieve a high effective sensitivity, the cross-sensitivity to temperature has to be kept low. We outline the proper choice of a material and especially focus on the influence of crystal cut and the major device design parameters (mass sensitivity and coupling coefficient) on the temperature coefficient of the sensor.

show abstract

“…Les valeurs expérimentales de la vitesse, du couplage et du CTF mesurés dans un montage en oscillateur [8,9] sont résumées dans le tableau II.…”

Section: Présentation Des Résultats -Les Résultatsunclassified

Propagation des ondes élastiques de surface - Atlas des configurations calculées pour le quartz, le tantalate de lithium, le niobate de lithium et le vanado-sulfure de thallium en ce qui concerne les coefficients de température et le couplage piézo-électrique

Feldmann¹,

Hénaff²

1977

Rev. Phys. Appl. (Paris)

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. PROPAGATION DES ONDES ÉLASTIQUES DE SURFACEAtlas des configurations calculées pour le quartz, le tantalate de lithium, le niobate de lithium et le vanado-sulfure de thallium en ce qui concerne les coefficients de température et le couplage piézo-électrique

show abstract

Simple technique for the accurate determination of delay-time variations in acoustic-surface-wave structures

Cited by 61 publications

References 0 publications

Survey of integrated‐circuit‐oscillator phase‐noise analysis

Survey of integrated‐circuit‐oscillator phase‐noise analysis

Substrates for zero temperature coefficient Love wave sensors

Propagation des ondes élastiques de surface - Atlas des configurations calculées pour le quartz, le tantalate de lithium, le niobate de lithium et le vanado-sulfure de thallium en ce qui concerne les coefficients de température et le couplage piézo-électrique

Contact Info

Product

Resources

About