Design of a wide-band lumped-element 3-dB quadrature coupler

Author

Chiang, Yi-Chyun ; Chen, Chong-Yi

Author_Institution

Inst. of Electr. Eng., Chang Gung Univ., Tao Yuan, Taiwan

Volume

49

Issue

3

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

476

Lastpage

479

Abstract

Analysis and design techniques for designing a lumped-element 3-dB quadrature coupler with wide-band flat coupling are proposed for microwave integrated-circuit/monolithic-microwave integrated-circuit applications. The proposed design technique can produce a coupler with flat coupling over 50% fractional bandwidth, which is wider than the conventional lumped-element design methods. A prototype consisting of a capacitive coupled high-pass network is designed and fabricated to verify the design concept. Measurement and simulation results closely correspond to each other

Keywords

MMIC; coupled circuits; directional couplers; integrated circuit design; microwave integrated circuits; millimetre wave directional couplers; capacitive coupled high-pass network; design concept; fractional bandwidth; lumped-element 3-dB quadrature coupler; microwave integrated-circuit; monolithic-microwave integrated-circuit; wide-band flat coupling; Bandwidth; Circuit simulation; Coupling circuits; Design methodology; Frequency; MMICs; Microwave integrated circuits; Monolithic integrated circuits; Prototypes; Wideband;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.910551

Filename

910551