✦ LIBER ✦

A super compact planar microstripline rat-race coupler

✍ Scribed by Shry-Sann Liao; Jen-Tee Peng; Chiou-Yueh Gun

Book ID: 102522186
Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 226 KB
Volume: 47
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.21152

No coin nor oath required. For personal study only.

✦ Synopsis

ports is below Ϫ30 dB across the bandwidth. Good broadside radiation patterns were observed, with cross-polar levels below Ϫ20 dB at both the E-and H-planes. Compared to previous designs (in [12], for example), this antenna is simpler in structure and lower in cost, as only one patch is used. It also has advantages such as broad bandwidth, high isolation between two input ports, and low cross-polarization levels. Due to its use of proximitycoupled feeds, it is easy to form arrays by using this antenna as an element. Thus, it is promising for practical applications in mobilecommunication systems.

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