Journal ArticleDOI
Modular two-dimensional analysis of SAW filters. II. Analysis and compensation results
TLDR
Physical effects causing distortions of the transfer function of a broadband (36% fractional bandwidth) spectrum shaping filter for digital radio with 16 quadrature amplitude modulation (QAM) are analyzed separately and connected with the modular two-dimensional (2-D) model, demonstrating the importance of every single effect.Abstract:
For pt.I see ibid vol.39, no.1, pp.61-72 (1992). Physical effects causing distortions of the transfer function of a broadband (36% fractional bandwidth) spectrum shaping filter for digital radio with 16 quadrature amplitude modulation (QAM) are analyzed separately and connected with the modular two-dimensional (2-D) model described in Part I, demonstrating the importance of every single effect. A compensation of the second-order effects is performed, yielding an agreement between simulation and measurement in amplitude and phase of more than +or-0.1 dB and +or-1 degrees all over the passband. The stopband is also predicted with high accuracy. >read more
Citations
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Book
Surface Acoustic Wave Filters: With Applications to Electronic Communications and Signal Processing
TL;DR: In this article, the fundamental principles and device design techniques for surface acoustic wave filters are discussed, as well as the latest technologies for low bandpass filters such as unidirectional transducers, resonators in impedance element filters, double-mode SAW filters and transverse-coupled resonators using waveguides.
Journal ArticleDOI
SAW devices for consumer communication applications
Clemens Ruppel,R. Dill,Alice Fischerauer,Gerhard Fischerauer,A. Gawlik,J. Machui,Folkhard Muller,Leonhard Reindl,Werner Ruile,G. Scholl,I. Schropp,K.C. Wagner +11 more
TL;DR: An overview of surface acoustic wave filter techniques available for different applications is given, and for many devices the theoretical frequency response is presented along with the measurement curve.
Proceedings ArticleDOI
History of SAW devices
TL;DR: In this paper, the authors give a historical account of the development of Rayleigh-wave, or surface acoustic wave (SAW), devices for applications in electronics, with applications ranging from professional radar and communications systems to consumer areas such as TV, pagers and mobile phones.
Journal ArticleDOI
Design, fabrication, and application of precise SAW delay lines used in an FMCW radar system
Leonhard Reindl,Clemens Ruppel,S. Berek,Ulrich Knauer,Martin Vossiek,Patric Heide,Lutz Oreans +6 more
TL;DR: In this article, a low-cost nonlinear voltage-controlled oscillator (VCO), operating at an IF of 2.45 GHz, is applied twice, first to generate the radar transmitter signal at 24 GHz and then it is fed to a surface acoustic wave delay line.
Journal ArticleDOI
Modular two-dimensional analysis of SAW filters. I. Theory
TL;DR: An accurate simulation tool to meet the stringent requirements for broadband surface-acoustic-wave filters is described and the angular spectrum of waves formalism is interpreted in such a way as to render possible the simultaneous description of all effects mentioned.
References
More filters
Journal ArticleDOI
A computer program for designing optimum FIR linear phase digital filters
TL;DR: A general-purpose computer program which is capable of designing a large Class of optimum (in the minimax sense) FIR linear phase digital filters and is shown to be exceedingly efficient.
Journal ArticleDOI
Power Waves and the Scattering Matrix
TL;DR: In this paper, the physical meaning and prop-erties of the power waves defined by [Equation], [ Equation] where V/sub i/ and Z/sub I/ are the voltage at and the current flowing into the ith port of a junction and the impedance of the circuit connected to the it h port.
Journal ArticleDOI
Acoustic surface wave filters
R.H. Tancrell,M.G. Holland +1 more
TL;DR: In this article, the authors developed models to describe delay lines and compared the predictions of these theories with several experimental filters, including band-pass filters and dispersive delay lines, in the UHF range, and the frequency response is determined by the finger spacing and overlap of the interdigital comb structures used as input and output transducers.
Patent
Microwave transistor amplifier
TL;DR: In this article, a low noise, multistage microwave transistor amplifier constructed using microwave integrated circuit techniques is disclosed, which is the basic building block for broadband, high-gain cascades.
Journal ArticleDOI
Impulse Model Design of Acoustic Surface-Wave Filters
TL;DR: The impulse-response description of interdigital transducers is extended to allow calculation of transducer input admittance and filter frequency response with much less effort than required by earlier equivalent-circuit model approaches.