| 摘要 |
<p>A surface acoustic wave hyperfrequency filter composed of a two-path structure comprising a preferably symmetrical pair of input transducers (2, 6) connected to a pair of weighted output transducers (8, 9). A pair of reflectors (14, 15) is associated with one of said pairs of transducers (2, 3), said reflectors being offset by a distance (d) equal to a quarter of the wavelength μ of the acoustic waves to the nearest integer of half-wavelengths. Weighting is selected so as to obtain the desired pulse response.</p> |
