A fully embedded LTCC stripline parallel coupled BPF for 40 GHz BMWS application

A low-loss fully embedded bandpass filter (BPF) is proposed using low-temperature cofired ceramic (LTCC) technology with enhanced stopband characteristics for the broadband multimedia wireless system (BMWS) applications. The measured insertion loss was as small as 1.7 dB at a center frequency of 41.8 GHz, and the return loss was 10.2 dB, including the loss associated with two stripline-to-CPW transitions. This six-layer BPF showed 3-dB bandwidth of 8.4% at a center frequency of 41.8 GHz and suppressed the local oscillator (LO) signal to 20 dB at a local oscillator frequency of 38.8 GHz.

[1]  C.-H. Lee,et al.  3D integrated LTCC module using /spl mu/BGA technology for compact C-band RF front-end module , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[2]  Tamio Saito,et al.  60-GHz transceiver for high-speed wireless LAN system , 1996, 1996 IEEE MTT-S International Microwave Symposium Digest.

[3]  Jr. R. Wyndrum.  Microwave filters, impedance-matching networks, and coupling structures , 1965 .

[4]  Kyutae Lim,et al.  A compact LTCC-based Ku-band transmitter module , 2002 .

[5]  H. Shimawaki,et al.  Small-size 72-GHz-band transceiver modules utilizing IF self-heterodyne transmission technology , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[6]  E. M. Jones,et al.  Microwave Filters, Impedance-Matching Networks, and Coupling Structures , 1980 .

[7]  Arne F. Jacob,et al.  Novel LTCC/BGA modules for highly integrated millimeter-wave transceivers , 2003 .

[8]  K. Ohata,et al.  60GHz-Band Flip-Chip MMIC Modules for IEEE1394 Wireless Adapters , 2001, 2001 31st European Microwave Conference.

[9]  B. Kopp,et al.  Miniaturized stripline circuitry utilizing low temperature cofired ceramic (LTCC) technology , 1992, 1992 IEEE Microwave Symposium Digest MTT-S.

[10]  A. Chin,et al.  40-GHz coplanar waveguide bandpass filters on silicon substrate , 2002, IEEE Microwave and Wireless Components Letters.

[11]  T.J. Mueller.  SMD-type 42 GHz waveguide filter , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[12]  K. Maruhashi,et al.  60-GHz-band dielectric waveguide filters with cross-coupling for flip-chip modules , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[13]  Wataru Domon,et al.  A 500Mbps 60GHz-Band Transceiver for IEEE 1394 Wireless Home Networks , 2000, 2000 30th European Microwave Conference.

[14]  D. Pozar.  Microwave Engineering , 1990 .

[15]  Jan Svedin,et al.  A 60 GHz Image Rejection Filter Manufactured Using a High Resolution LTCC Screen Printing Process , 2003, 2003 33rd European Microwave Conference, 2003.