Симметрирующие устройства (baluns), полосовые фильтры, направленные ответвители (couplers), ПАВ фильтры, устройства частотной развязки - дуплексоры и триплексоры. Подробнее Серии RF ФИЛЬТРОВ Walsin  описаны ниже.

Size: 0605 to 2012
Working Frequency: 670 MHz to 5950 MHz
Insertion Loss(dB) : 0.55~ 2.0
Unbalanced Impedance (Ω) : 50/75
Balanced Impedance (Ω) : 35/ 37.5 / 50 / 75 / others

0605 to 3225 Sizes
Working Frequency: DC to 5950 MHz
Insertion Loss(dB) : 0.25~ 4.5
Impedance (Ω) : 50 / 75

Size: 0605 to 1608 ,
Working Frequency: 617 MHz to 2700 MHz
Insertion Loss(dB): 0.15 ~ 1.83

Fixed spec.
For GPS/LTE/WALAN use
Walsin offers following product types: Single Saw, Single Saw Diplexer, Single Saw Duplexer, and Balanced Saw Duplexer

Diplexer –
Size: 1005 to 2520
Lower Working Frequency: 570 MHz to 2500 MHz
Higher Working Frequency: 1427 MHz to 5950 MHz
Insertion Loss(dB):0.35~2.7 Triplexer –
Size: 2012 to 2520
Lower Working Frequency: 698 MHz to 1606 MHz
Middle Working Frequency: 1710 MHz to 2500 MHz
Higher Working Frequency: 2500 MHz to 5950 MHz
Insertion Loss(dB) : 0.6~1.8