Title :
A 60-GHz-band planar dielectric waveguide filter for flip-chip modules
Author :
Ito, Masaharu ; Maruhashi, Kenichi ; Ikuina, Kazuhiro ; Hashiguchi, Takeya ; Iwanaga, Shunichi ; Ohata, Keiichi
Author_Institution :
Photonic & Wireless Devices Res. Labs., NEC Corp., Shiga, Japan
fDate :
12/1/2001 12:00:00 AM
Abstract :
A planar dielectric waveguide filter with coplanar waveguide (CPW) I/O ports suitable for flip-chip bonding is proposed and is demonstrated for 60-GHz-band applications. The filter is formed incorporating metallized through holes in an alumina substrate. In order to improve stopband rejection, short-circuited CPW resonators with a half-wavelength are added to waveguide-to-CPW transitions. A fabricated four-resonator filter exhibits an insertion loss of 3.2 dB with a 3-dB bandwidth of 3.0 GHz and rejection of 35 dB at 3-GHz lower separation from a center frequency of 59.5 GHz. The filter is mounted by using flip-chip bonding in a multilayer ceramic package with structures to suppress parasitically propagating electromagnetic waves. No degradation of the stopband rejection is observed from 50 to 80 GHz
Keywords :
Chebyshev filters; band-pass filters; ceramic packaging; coplanar waveguide components; dielectric waveguides; flip-chip devices; millimetre wave filters; waveguide filters; waveguide transitions; 3.0 GHz; 3.2 dB; 59.5 GHz; 60 GHz; Chebyshev filter; alumina substrate; coplanar waveguide I/O ports; flip-chip bonding; flip-chip modules; four-resonator filter; insertion loss; metallized through holes; millimeter-wave filters; multilayer ceramic package; planar dielectric waveguide filter; quality factor; short-circuited CPW resonators; stopband rejection; waveguide-to-CPW transitions; Bandwidth; Bonding; Coplanar waveguides; Dielectric substrates; Electromagnetic waveguides; Insertion loss; Metallization; Planar waveguides; Resonator filters; Waveguide transitions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
