Transactions of The Japan Institute of Electronics Packaging
Online ISSN : 1884-8028
Print ISSN : 1883-3365
ISSN-L : 1883-3365
Short Note
Compact Triplexer Using L-type Matching Networks
Genki OishiShinpei OshimaMasaya Tamura
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2022 Volume 15 Pages E21-017-1-E21-017-7


In this short note, we present a compact triplexer for the GPS, 2.4-GHz wireless systems, and the 5-GHz WLAN. This triplexer consists of chip filters, capacitors, and inductors on a printed circuit board. It is based on L-type matching networks. The design area of the prototype is less than 8 × 7 mm2. Insertion losses are less than 1.9 dB, 2.7 dB, and 1.8 dB in each passband. The prototype also achieves high attenuation performances with sharp roll-off characteristics. The isolations are higher than 30 dB in each band.

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