Micro-directional couplers for frequency selection

Author

Haruvi-Busnach, E. ; Zilberstein, M. ; Croitoru, N. ; Seidman, A.

Author_Institution

Dept. of Electr. Eng., Tel Aviv Univ., Israel

fYear

1994

fDate

1-3 Jun 1994

Firstpage

343

Lastpage

344

Abstract

Big adaptors in SAW devices cause crosstalk. This problem was solved employing directional couplers (DC) made of miniaturized microinterdigital transducers and microacoustic waveguide (WG). They were made by deposition of Al-strips, using microlithographic technology. This enables to avoid dispersion, to increase efficiency, and to integrate several DCs on the same substrate. A coupling of DC of ~25 dB for the DC was obtained and, by depositing between the WGs, horizontal dashed microlines as perturbation, frequency displacement, between transmitting and receiving WGs was obtained

Keywords

acoustic microwave devices; aluminium; directional couplers; interdigital transducers; lithography; surface acoustic wave couplers; 25 dB; Al; Al-strips; RF input circuits; SAW devices; coupling of DC; crosstalk; directional couplers; dispersion; efficiency; electronic warfare; frequency displacement; frequency selection; horizontal dashed microlines; micro-directional couplers; microacoustic waveguide; microlithographic technology; miniaturized microinterdigital transducers; perturbation; Acoustic transducers; Acoustic waveguides; Acoustic waves; Couplers; Frequency; Scattering; Strips; Surface acoustic wave devices; Surface acoustic waves; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 1994. 48th., Proceedings of the 1994 IEEE International

Conference_Location

Boston, MA

Print_ISBN

0-7803-1945-1

Type

conf

DOI

10.1109/FREQ.1994.398314

Filename

398314