Title :
Design and fabrication technology of low loss and high frequency SAW devices for mobile radio phones
Author_Institution :
Semicond. & Integrated Circuits Div., Hitachi Ltd., Tokyo, Japan
Abstract :
This paper describes designs for IIDT and band-stop filters with insertion loss of less than 3 dB, and fabrication technology for aluminum electrodes enduring some watt-class electrical power for high frequency filters in mobile radio phones
Keywords :
UHF filters; band-stop filters; interdigital transducers; losses; mobile radio; sputter etching; surface acoustic wave resonator filters; telephone sets; Al; Al electrodes; IIDT; UHF SAW filers; band-stop filters; fabrication technology; high frequency SAW devices; insertion loss; low loss SAW devices; mobile radio phones; Circuits; Electrodes; Fabrication; Insertion loss; Land mobile radio; Magnetic separation; Radio frequency; Radio transmitters; Resonator filters; Surface acoustic wave devices;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.841456
