New uniplanar transitions for circuit and antenna applications

New uniplanar microstrip-to-slotline, microstrip-to-coplanar strips (PS) and microstrip-to-coplanar waveguide (CPW) transitions for MIC/MMIC and slotline antennas for phased array applications are described. Such transitions are compact and suitable to be used in an open environment inside a package...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1995-12, Vol.43 (12), p.2868-2873
Main Authors: Dib, N.I., Simons, R.N., Katehi, L.P.B.
Format: Article
Language:English
Subjects:
Coplanar waveguides
Finite difference methods
Microstrip antenna arrays
Microstrip antennas
Microwave integrated circuits
MMICs
Phased arrays
Slotline
Time domain analysis
Waveguide transitions
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Summary:New uniplanar microstrip-to-slotline, microstrip-to-coplanar strips (PS) and microstrip-to-coplanar waveguide (CPW) transitions for MIC/MMIC and slotline antennas for phased array applications are described. Such transitions are compact and suitable to be used in an open environment inside a package or a multichip module. The transitions share the concept of using a balun which consists of two microstrip lines connected to a slotline through a pair of coupled microstrips. In this paper, the transitions are studied theoretically using the Finite Difference Time Domain (FDTD) technique and measured experimentally using an HP8510C Network Analyzer. For a back-to-back microstrip-to-slotline transition, an insertion loss of less than 1.3 dB per transition is achieved over a 49% bandwidth with a minimum of 0.6 dB around the design frequency.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.475648