APPLICATION SYSTEMS OF SAW CHIRP TRANSFORM FILTER IN SPREAD SPECTRUM COMMUNICATION * L. B. Milstein and R. T. Webster P. Das, ABSTRACT Narrowband jamming of a spread spectrum signal can be filtered out in the frequency domain using acoustic surface wave convolvers as real time Fourier transformers. This is accomplished by employing modulated chirp signals as inputs. The particular frequency ra

MULTIPLE REFLECTION AND MULTI-ECHO ELECTROACOUSTIC BULKWAVE DELAY LINES PUYHAUBERT J. - SEGUIN M. ABSTRACT The present paper describes in the microwave bulkwave By backfocusing sible to concentrate delay line. new solutions delay lines. to reduce the the the diffraction transducer, efficiency losses it is of the pos- the spreaded the acoustic beam produced by waves and increase In t

BEHAVIOR AND CURRENT PERFORMANCES OF SAW AND BAW OSCILLATORS A. SCHAER- ABSTRACT Presented are the theory of operation and experimental operating results for two new types of acoustic-wave oscillators, one incorporating a surface acoustic-wave (SAW) delay line and the other a bulk acoustic-wave (BAW) delay line. SAW oscillators have been made that operate at up to 500 MHz, whereas the BAW t



THE REFLECTIVE A FREQUENCY SENSITIVE ASW MULTI STRIP DEVICE FOR FILTER ARRAY AND CHANNEL BANK Michel FELDMANN and Jeannine HENAFF * ABSTRACT A frequency sensitive ASW structure is presented, operating by reflection of acoustic surface waves. Such a structure is of interest for frequency filters and filter banks. The response can be computed by scattering matrices leading to a good agreemen

CONVOLUTION IN A PULSE ~ BIASED ZnO-SIOZ-Si ~ SAW DEVICE ~ ~~ J. K. Elliott," R. L. Gunshor," R. F. Pierret," and K. L. Davis"" ABSTRACT A monolithic SAW device consisting of an rf sputtered ZnO film on a thermally oxidized silicon substrate has been shown to be useful for several signal processing and optical image scanning applications. The device efficiency and sensitivity can be vari

QUASI-OPTICAL MILLIMETER WAVEGUIDES AND COMPONENTS Raj Mittra ABSTRACT In this paper we review a number of quasi-optical waveguide structures and discuss their application to millimeter-wave integrated circuits. Some novel designs for dielectric waveguides and passive components using these waveguides are described. A summary of the results of theoretical and experimental studies of these waveg

ACOUSTIC SOME Jeannine SURFACE SIGNAL HENAFF WAVE AND CHARGE TRANSFER DEVICES IN PROCESSING * APPLICATIONS ABSTRACT Both acoustic surface wave and charge transfer devices technologies are now maturing. The present paper presents a survey of few analog applications restricted to civil communication systems. Actually, the input signal is delayed and weighted in the same way in both devices.

ACCURATE SCATTERING NETWORKS PARAMETER MEASUREMENTS ON NON-CONNECTABLE MICROWAVE R. A. Speciale, R. E. Grabowski, N. R. Franzen* ABSTRACT The development of an explicit and exact algorithm, computing the equivalent error representation for a network analyzer system, makes accurate measurements possible upon non-connectable microwave networks, embedded in complex transmission line environments

A NEW CALIBRATION MEASUREMENTS TECHNIQUE FOR AUTOMATED BROADBAND MICROWAVE Harry Cronson and Leon Susman ABSTRACT This paper presents new results in the area of precision microwave measurements using "six-port techniques". These techniques allow one to compute the complex ratio of two signals using power measurements alone. After proper calibration of the six-port network, the output of 4 s