A Novel 3-dB Coupler for MMIC Using Air-Gap Stacked Microstrip Lines

IEEE Microwave and Guided Wave Letters

Volumn 10, Issue 1, 2000, Pages 1-3

  Ryu, Gi Hyon ^a   Kim, Dae Hyun ^a   Lee, Jae Hak ^a   Seo, Kwang Seok ^a  

^a Seoul National University   (South Korea)

Author keywords

Air gap stacked microstrip line; broadside cou; coupler; MMIC; pled line

Indexed keywords

COUPLED CIRCUITS; ELECTRIC NETWORK ANALYSIS; ELECTRIC NETWORK SYNTHESIS; INTEGRATED CIRCUIT LAYOUT; MICROSTRIP LINES; OPTIMIZATION;

AIR-GAP STACKED MICROSTRIP LINES;

MONOLITHIC MICROWAVE INTEGRATED CIRCUITS;

EID: 0033719597     PISSN: 10518207     EISSN: None     Source Type: Journal    
DOI: 10.1109/75.842068     Document Type: Article

References (5)

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2. J. S. Izadian, “A new 6-18 GHz, 3 dB multisection hybrid coupler using asymmetric broadside, and edge coupled lines,” in 1989 IEEE MTT-S Dig., pp. 243-247.
3. I. Toyoda, T. Hirota, T. Hiroaka, and T. Tokumitsu, “Multilayer MMIC branch-line coupler and broad-side coupler,” in 1992 IEEE MMWMC-S Dig., pp. 79-82.
4. M. Nakajima and E. Yamashita, “A quasi-TEM design method for 3 dB hybrid couplers using a semi-reentrant coupling section,” IEEE Trans. Microwave Theory Tech., vol. 38, pp. 1731-1736, Nov. 1990.
5. D. Willems and I. Bahl, “A MMIC compatible coupled line structure that uses embedded microstrip to achieve extremely tight couplings,” in 1993 IEEE MTT-S Dig., pp. 581-584.