Electronic component operating with acoustic waves

Details Electronic component operating with acoustic waves Electronic component operating with acoustic waves

1983-03-08

1984-11-20

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313D, 333153, 333196, H03H 964, H03H 9145

Patent

active

044841604

ABSTRACT:
Electronic components which operate with acoustic waves are provided as interdigital structures and/or reflective arrangements. An oscillating displacement of the significant plurality of sub-groups is provided parallel to the principal axis of propagation in a weighted region, each sub-group having at least two successive real finger edges and, under certain conditions, virtual finger edges. A plurality of principal groups is provided and in a number which is equal to or greater than the time/bandwidth product. Each principal group has at least two real sub-groups and the respective degree of displacement of the finger edges of the individual sub-group corresponds to an additional oscillating phase modulation for the sequence of the sub-groups of the weighted region with the oscillation being such that the number of oscillations within a principal group is a whole number which is not greater than half the number of the sub-groups therein.

REFERENCES:
patent: 3813618 (1974-05-01), Hartemann et al.
patent: 4427954 (1984-01-01), Veith et al.
patent: 4429246 (1984-01-01), Miyajima
R. E. Chapman et al., "Weighted In-Line Reflective Array Devices", 1979 Ultrasonics Symposium, pp. 696-700.
T. Kitano et al., "Amplitude Weighted Metal Strip Reflective Array Compressor", 1977 Ultrasonics Symposium, pp. 585-589.

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