Filter module
The present invention relates to a filter module including a substrate, a plurality of filters formed on the substrate, an amplifier formed on the substrate, a connection part for connecting the plurality of filters and the amplifier to the substrate, and a cover layer formed on the substrate to cover the plurality of filters and the amplifier.
1. A filter module comprising:
a substrate;
a plurality of filters formed on the substrate;
an amplifier formed on the substrate and electrically connected to the plurality of filters;
a connection part for connecting the plurality of filters and the amplifier to the substrate;
a cover layer formed on the substrate to cover the plurality of filters and the amplifier; and
a matching element formed on the substrate for matching impedances of the plurality of filters and the amplifier,
wherein the plurality of filters and the amplifier are simultaneously or sequentially packaged, and
wherein the matching element is formed in a shape of a layered spiral in a space between input terminals and output terminals of the plurality of filters.
2. The filter module according to claim 1 , wherein the input terminal and the output terminal of each of the plurality of filters and an input terminal and an output terminal of the amplifier are formed on the substrate.
3. The filter module according to claim 2 , wherein the input terminal and the output terminal of each of the plurality of filters are electrically connected to the input terminal and the output terminal of the amplifier through a via pad formed on the substrate.
4. The filter module according to claim 1 , wherein the input terminals of the plurality of filters are independent from each other, and the output terminals thereof are connected to each other.
5. The filter module according to claim 1 , wherein the plurality of filters are connected in parallel.
6. The filter module according to claim 1 , wherein the connection part is a bump ball.
7. The filter module according to claim 6 , wherein the bump ball is in a shape of an elliptical ball distorted in a predetermined direction.
8. The filter module according to claim 6 , wherein the connection part is connected to an electrode previously patterned on the substrate.
9. The filter module according to claim 1 , wherein the plurality of filters passes frequencies different from each other.
10. The filter module according to claim 1 , wherein the matching element is connected between the output terminals of the plurality of filters and the input terminal of the amplifier.
11. The filter module according to claim 1 , wherein the plurality of filters is at least any one of a single SAW filter, a dual SAW filter and a triple SAW filter.
12. A filter module comprising:
a substrate;
a filter formed on the substrate and connected between an antenna and an amplifier;
the amplifier formed on the substrate and connected between the filter and an RF output terminal to amplify a signal received from the antenna;
a connection part for connecting the filter and the amplifier to the substrate;
a cover layer formed on the substrate to cover the filter and the amplifier; and
a matching element formed on the substrate for matching impedances of the filter and the amplifier,
wherein the filter and the amplifier are simultaneously packaged in a wafer chip state, and
wherein the matching element is formed in a shape of a layered spiral in a space between an input terminal and output terminal of the filter.
13. A mobile communication terminal comprising:
an antenna; and
a filter module connected to the antenna, wherein the filter module includes:
a substrate;
a filter formed on the substrate and connected between the antenna and an amplifier;
the amplifier formed on the substrate and connected between the filter and an RF output terminal to amplify a signal received from the antenna;
a connection part for connecting the filter and the amplifier to the substrate;
a cover layer formed on the substrate to cover the filter and the amplifier; and
a matching element formed on the substrate for matching impedances of the filter and the amplifier
wherein the filter and the amplifier are simultaneously packaged in a wafer chip state, and
wherein the matching element is formed in a shape of a layered spiral in a space between an input terminal and output terminal of the filter.
14. A mobile communication terminal comprising:
an antenna; and
a filter module connected to the antenna, wherein the filter module includes:
a substrate;
a plurality of filters formed on the substrate;
an amplifier formed on the substrate;
a connection part for connecting the plurality of filters and the amplifier to the substrate;
a cover layer formed on the substrate to cover the plurality of filters and the amplifier; and
a matching element formed on the substrate for matching impedances of the plurality of filters and the amplifier,
wherein the plurality of filters and the amplifier are simultaneously or sequentially packaged, and
wherein the matching element is formed in a shape of a layered spiral in a space between input terminals and output terminals of the plurality of filters.
15. A filter module comprising:
a substrate;
a plurality of filters formed on the substrate;
a plurality of amplifiers formed on the substrate and electrically connected to the plurality of filters;
a connection part for connecting the plurality of filters and the plurality of amplifiers to the substrate;
a cover layer formed on the substrate to cover the plurality of filters and the plurality of amplifiers; and
a plurality of matching elements formed on the substrate for matching impedances of the plurality of filters and the plurality of amplifiers,
wherein the plurality of filters and the plurality of amplifiers are simultaneously or sequentially packaged, and
wherein each of the matching elements are formed in a shape of a layered spiral in a space between input terminals and output terminals of the plurality of filters.
16. The filter module according to claim 15 , wherein the plurality of filters is at least any one of a single SAW filter, a dual SAW filter and a triple SAW filter.
17. The filter module according to claim 15 , wherein the plurality of filters, the plurality of amplifiers and the plurality of matching elements are simultaneously packaged.