Diplexer and multiplexer using the same
AssigneeNgk Spark Plug Co., Ltd.
InventorsSyouji Ono, Tetsuo Suehiro, Jyunichi Ichikawa, Keiji Takagi, Manabu Sato
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Abstract
A diplexer provides a high degree of design freedom for satisfying the requirements of electric characteristics so as to realize desired characteristics and at the same time can be downsized and a multiplexer is realized by using such a diplexer. The diplexer includes a filter having a first pass band and a filter having a second pass band with a frequency band at least twice as high as the frequency band of the first pass band, the filter having the first pass band being a filter of the lumped constant type, the filter having the second pass band being a filter of the distributed constant type.
Claims19
A diplexer comprising:
- a filter having a first pass band;
- and
- a filter having a second pass band with a center frequency at least twice as high as the center frequency of the first pass band;
- the filter having the first pass band being a filter of the lumped constant type;
- the filter having the second pass band being a filter of the distributed constant type.
Dependencies are inferred from the claim text.