High frequency filter
AssigneeDelta Electronics, Inc.
InventorCheng-yen Shih
Life of this patent
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Abstract
A high-frequency filter whose main structure is formed by stacking a plurality of patterned substrates. The high-frequency filter includes a metal grounding layer, a signal input port, a signal output port, and a plurality of resonator layers having resonators coupled to one another for transmitting signals. By utilizing coupling among resonators located on adjacent layers respectively instead of coupling among resonators on a single layer in the prior planar patterned filter, the structure of the high-frequency filter in the invention can be changed according to process limitations.
Claims20
A high-frequency filter formed by stacking a plurality of patterned substrates each having a top surface and a bottom surface, the high frequency filter comprising:
- a first metal grounding layer having a first grounding surface;
- a plurality of resonator layers each having at least one resonator, wherein each resonator has a grounding end electrically connected to the first grounding surface, and the resonators are arranged in a same direction and disposed so that coupling occurs between each two resonators that are separately situated on adjacent resonator layers;
- a signal input port formed on one of the resonator layers, wherein the signal input port and a first resonator of the resonators are located on different resonator layers;
- and
- a signal output port formed on one of the resonator layers.
A high-frequency filter formed by stacking a plurality of patterned substrates each having a top surface and a bottom surface, the high frequency filter comprising:
- a first metal grounding layer having a first grounding surface;
- a plurality of resonator layers each having at least one resonator, wherein each resonator has a grounding end electrically connected to the first grounding surface, and the resonators are arranged in a same direction and disposed so that coupling occurs between each two resonators that are separately situated on adjacent resonator layers;
- a signal input port formed on one of the resonator layers;
- and
- a signal output port formed on one of the resonator layers, wherein the signal output port and a last resonator of the resonators are located on different resonator layers.
Dependencies are inferred from the claim text.