Abstract: A resonance device including a plurality of resonators arranged in a state of being spaced apart from each other; and a notch resonator formed above the plurality of resonators, wherein the notch resonator includes: a transverse layer having an area overlapping with at least three resonators of the plurality of resonators; and a plurality of short-ended layers connecting the transverse layer to a first ground surface.

Abstract: A resonance device including a plurality of signal input/output ports, further including: a plurality of resonators arranged in a state of being spaced apart from each other; and a notch resonator formed at a side of the plurality of resonators, wherein the notch resonator includes: a laminated part having a laminated structure formed by layering a plurality of conductive layers; a first transmitting layer connected to one of the plurality of conductive layers; and a bridge connected between the first transmitting layer and one of the plurality of resonators, wherein one of the plurality of signal input/output ports is connected to the bridge.

Abstract: A multi-band filter is disclosed. The multi-band filter includes: a housing including an antenna connector connected to an antenna and a plurality of input/output connectors inputting/outputting signals transmitted and received through the antenna depending on a preset frequency band; a plurality of band pass filter units provided in the housing and passing the signals in the preset frequency band therethrough between the antenna connector and the input/output connectors; and a coupling unit including a plurality of feeding parts so as to couple the antenna connector and each of the plurality of band pass filter units to each other.

Abstract: A resonator and a filter including the same are provided. The resonator includes a body formed of a dielectric material and including a through-hole formed in one direction, and a conductive film coupled to at least one of both side cross-sections of the body in a lengthwise direction and a wall surface of the through-hole.

Abstract: A multiplexer including a housing including an antenna connector coupled to an antenna and a plurality of input and output connectors configured to receive or output a signal transmitted or received via the antenna according to a predetermined frequency band; a plurality of band pass filter units included in the housing and configured to pass a signal of a predetermined frequency band between the antenna connector and the plurality of input and output connectors; and a coupling unit including a plurality of feeding units to couple the antenna connector and the plurality of band pass filter units with one another.

Abstract: An multi-band pass filter is disclosed. The multi-band pass filter in accordance with an embodiment of the present invention includes: a housing comprised with an input terminal and an output terminal separated from each other; a high pass filter installed in one inside of the housing and electrically connected to the input terminal and configured to form a plurality of resonator patterns with the circuit patterns on the printed circuit board; and a dual band reject filter series-connected with the high pass filter and provided between the high pass filter and the output terminal by forming a plurality of cavities inside the housing and furnishing each of the cavities with a resonator.

Abstract: An diplex filter for testing a base station is disclosed.

Abstract: An diplex filter for testing a base station is disclosed.

Abstract: A resonance device is disclosed. The resonance device in accordance with an embodiment of the present invention includes: a case including a first ground surface and a second ground surface which face each other; a stacked part formed inside the case by stacking a first conductive layer and a second conductive layer, wherein the first conductive layer is grounded to the first ground surface and the second conductive layer is separated from the first conductive layer without being grounded to the first ground surface; and a transmission layer connecting the second conductive layer to the second ground surface.