US 12,334,896 B2
Multiplexer and antenna module
Hirotsugu Mori, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Oct. 18, 2022, as Appl. No. 17/967,917.
Application 17/967,917 is a continuation of application No. PCT/JP2021/003247, filed on Jan. 29, 2021.
Claims priority of application No. 2020-077503 (JP), filed on Apr. 24, 2020.
Prior Publication US 2023/0035579 A1, Feb. 2, 2023
Int. Cl. H03H 7/46 (2006.01); H01Q 21/30 (2006.01); H03H 7/01 (2006.01); H03H 7/38 (2006.01)
CPC H03H 7/46 (2013.01) [H01Q 21/30 (2013.01); H03H 7/0115 (2013.01); H03H 7/0123 (2013.01); H03H 7/383 (2013.01); H03H 7/463 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A multiplexer, comprising:
a common terminal;
a common line connected between the common terminal and a common connection node;
a first terminal;
a second terminal;
a first filter being connected between the common connection node and the first terminal and having a first pass band; and
a second filter being connected between the common connection node and the second terminal and having a second pass band,
wherein at least one of a first condition and a second condition is satisfied, the first condition being that in the first pass band any one of a first impedance of the common line alone viewed from the common terminal and a second impedance of the first filter viewed from the common connection node includes an inductive property, and the other includes a capacitive property, the second condition being that in the second pass band one of the first impedance and a third impedance of the second filter viewed from the common connection node includes an inductive property, and the other includes a capacitive property,
wherein the second filter is a distributed constant filter.