Title :
Design of millimeter-wave bandpass filters with λg/4 short stubs using GaAs surface micromachining
Author :
Lee, Myeong-Gil ; Yun, Tae-Soon ; Kim, Ki-Byoung ; Shin, Dong-Hoon ; Tae-Jong Baet ; Lee, Jong-Chul
Author_Institution :
RFIC Center, Kwangwoon Univ., Seoul, South Korea
Abstract :
In this paper, millimeter-wave bandpass filters with λg/4 short stubs by surface micromachining on GaAs substrate are presented. This filter show flexible bandwidth with the variation of the position of the short stub using the external quality factor, Qe without changing the impedance value at millimeter-wave range. The bandpass filters can be realized with wide (50 %) and narrow (10 %) bandwidth just by adjusting the position of the short stubs. They show the insertion losses of 2.3 dB and 6.8 dB, and the return losses of 15 dB and 16 dB at the center frequency 60 GHz, respectively.
Keywords :
III-V semiconductors; Q-factor; band-pass filters; gallium arsenide; micromachining; millimetre wave filters; 15 dB; 16 dB; 2.3 dB; 6.8 dB; 60 GHz; bandpass filters; external quality factor; flexible bandwidth; insertion losses; millimeter-wave filters; return losses; short stubs; surface micromachining; Band pass filters; Bandwidth; Dielectric substrates; Gallium arsenide; Micromachining; Micromechanical devices; Microstrip; Millimeter wave communication; Millimeter wave technology; Propagation losses;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610056
