Parameters of Coupled-Mode Equations for a Natural Single Phase Unidirectional Transducer on a La_3Ga_<5.5>Ta_<0.5>O_<14> Substrate
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The computed parameters of coupled-mode equations are presented for natural single phase unidirectional transducers (NSPUDTs) on La_3Ga_<5.5>Ta_<0.5>O_<14> substrates with Euler angles (0°, 140°, 23°) and (12.7°, 150.1°, 36.3°). The aluminum electrode width and height dependences of the coefficients of coupled-mode equations are investigated in detail. Numerical results show that the amplitude of mutual-coupling coefficient κ_<12> for an NSPUDT on a (0°, 140°, 23°) La_3Ga_<5.5>Ta_<0.5>O_<14> Substrate is larger than that on a (12.7°, 150.1°, 36.3°) La_3Ga_<5.5>Ta_<0.5>O_<14> substrate for the same electrode width and height within the range of 0.5 ≦ w/p and 0.04 ≦ h/p. Our results of the insertion loss for a filter which consists of an NSPUDT and two split interdigital transducers on a (0°, 140°, 23°) La_3Ga_<5.5>Ta_<0.5>O_<14> substrate agree well with previous experimental results. [DOI: 10.1143/JJAP.41.3469]
- 社団法人応用物理学会の論文
- 2002-05-30
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