Title :
The new approach to realize small imbalances in differential Rx-outputs for SAW front end module
Author :
Hikino, Osamu ; Kijima, Masato ; Yokoyama, Kazuyuki ; Ohki, Masashi ; Matsuura, Naoki ; Sakiyama, Kazuyuki ; Hikita, Mitsutaka
Author_Institution :
Hitachi Media Electron. Co., Ltd, Yokohama-Shi, Japan
Abstract :
A balun circuit which has unique structure has been studied for accurate balanced characteristics and minimization of front end module (FEM) device size having differential Rx outputs. The procedure to design the balun has been derived and shown. The balun has been implemented in LTCC packages of 5.6×5.5×1.25 mm Typ. (triple band) and 7.2×5.5×1.25 mmTyp. (quad band) FEM and the amplitude and the phase imbalance of dB and degree has been derived, respectively.
Keywords :
acoustic receivers; baluns; minimisation; mobile handsets; surface acoustic wave devices; LTCC packages; SAW front end module; amplitude phase imbalance; balun circuit; device size; differential Rx-outputs; imbalances; minimization; quad band; triple band; Capacitors; Circuits; Distributed control; Filters; Impedance matching; Inductors; Packaging; Phase shifters; Phase transformers; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 2004 IEEE
Print_ISBN :
0-7803-8412-1
DOI :
10.1109/ULTSYM.2004.1417967
