DocumentCode
1918512
Title
Broadband lumped-element 180-degree hybrids utilizing lattice circuits
Author
Kawai, T. ; Kokubo, Y. ; Ohta, I.
Author_Institution
Dept. of Electron., Himeji Inst. of Technol., Hyogo, Japan
Volume
1
fYear
2001
fDate
20-24 May 2001
Firstpage
47
Abstract
This paper suggests a novel lumped-element 180/spl deg/ hybrid utilizing lattice circuits. The present hybrid possesses a wide-band property differently from ordinary lumped-element hybrids composed of /spl Pi/ or/and T networks. The bandwidth ratio is 2.4 for a regular type and can be increased to 7.13 by adding a lattice type impedance transformer at each port. The validity and usefulness of this idea also are demonstrated by electromagnetic simulation for a uniplanar circuit pattern.
Keywords
impedance convertors; lattice networks; lumped parameter networks; waveguide couplers; bandwidth ratio; broadband lumped-element hybrid coupler; electromagnetic simulation; impedance transformer; lattice circuit; uniplanar circuit; Bandwidth; Circuit simulation; Coupling circuits; Distributed parameter circuits; Frequency dependence; Impedance; Lattices; Propagation losses; Transmission line theory; Wideband;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location
Phoenix, AZ, USA
ISSN
0149-645X
Print_ISBN
0-7803-6538-0
Type
conf
DOI
10.1109/MWSYM.2001.966836
Filename
966836
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