High-frequency module
A high-frequency module ( 1 ) includes a first substrate ( 101 ), a second substrate ( 102 ) that faces the first substrate ( 101 ), a support ( 103 ) that supports the first substrate ( 101 ) and the second substrate ( 102 ), and a plurality of high-frequency circuit components arranged in internal space formed by the first substrate ( 101 ), the second substrate ( 102 ), and the support and on both of facing principal faces of the first substrate ( 101 ) and the second substrate ( 102 ), and the plurality of high-frequency circuit components include a power amplifier element that constitutes a power amplifier circuit ( 16 ).
1. A high-frequency module comprising:
a first substrate;
a second substrate facing the first substrate;
a support supporting the first substrate and the second substrate;
a plurality of high-frequency circuit components arranged in an internal space provided by the first substrate, the second substrate and the support, and on both of an uppermost surface of the first substrate and a lowermost surface of the second substrate facing the uppermost surface of the first substrate, the plurality of high-frequency circuit components including a high-frequency amplifier element constituting a high-frequency amplifier circuit; and
a conductor member being arranged between the high-frequency amplifier circuit and a high-frequency circuit component adjacent to the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate,
wherein the conductor member comprises an upper member, a lower member, a right member, and a left member when viewed in a direction parallel to the uppermost surface of the first substrate, an entire uppermost surface of the upper member of the conductor member is in direct contact with the lowermost surface of the second substrate, an entire lowermost surface of the lower member of the conductor member is co-planer with a lowermost surface the first substrate,
an entire inner surface of the right member of the conductor member is parallel to an entire inner surface of the left member of the conductor member when viewed in the direction parallel to the uppermost surface of the first substrate,
the high-frequency amplifier circuit is completely surrounded by the conductor member when the first substrate and the second substrate are viewed in the direction parallel to the uppermost surface of the first substrate, and
the conductor member is coupled to a ground.
2. The high-frequency module according to claim 1 , wherein
on one of the uppermost surface of the first substrate and the lowermost surface of the second substrate facing another substrate on which the high-frequency amplifier circuit is arranged and in a region overlapping with the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate, none of the plurality of high-frequency circuit components is arranged.
3. The high-frequency module according to claim 2 , wherein
in a region overlapping with an output unit of the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate, none of the plurality of high-frequency circuit components is arranged.
4. The high-frequency module according to claim 3 , further comprising
a conductor layer arranged on one of the uppermost surface of the first substrate and the uppermost surface of the second substrate facing another substrate on which the high-frequency amplifier circuit is arranged and in a region overlapping with the output unit of the high-frequency amplifier circuit when viewed in a direction perpendicular to the uppermost surface of the first substrate.
5. The high-frequency module according to claim 4 , wherein
a principal ingredient of the conductor layer is a material same as a material of a wiring layer constituting a wiring structure of the first substrate or the second substrate.
6. The high-frequency module according to claim 5 , further comprising
a conductor member being in contact with the uppermost surface of the first substrate and the lowermost surface of the second substrate and arranged between the high-frequency amplifier circuit and a high-frequency circuit component adjacent to the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate.
7. The high-frequency module according to claim 4 , further comprising
a conductor member being in contact with the uppermost surface of the first substrate and the lowermost surface of the second substrate and arranged between the high-frequency amplifier circuit and a high-frequency circuit component adjacent to the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate.
8. The high-frequency module according to claim 3 , further comprising
a conductor member being in contact with the uppermost surface of the first substrate and the lowermost surface of the second substrate and arranged between the high-frequency amplifier circuit and a high-frequency circuit component adjacent to the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate.
9. The high-frequency module according to claim 2 , further comprising
a conductor member being in contact with the uppermost surface of the first substrate and the lowermost surface of the second substrate and arranged between the high-frequency amplifier circuit and a high-frequency circuit component adjacent to the high-frequency amplifier circuit when the first substrate and the second substrate are viewed in a direction perpendicular to the uppermost surface of the first substrate.
10. The high-frequency module according to claim 1 , wherein
the conductor member includes the plurality of high-frequency circuit components.
11. The high-frequency module according to claim 10 , wherein
a plurality of the conductor members are arranged at predetermined intervals along an outer edge of the high-frequency amplifier circuit in the plan view, and
the predetermined interval is less than or equal to λ/4, where λ represents a wave length of a high-frequency signal output from the high-frequency amplifier circuit.
12. The high-frequency module according to claim 10 , wherein
the high-frequency amplifier circuit is surrounded by an electric conductor including the conductor member when the first substrate and the second substrate are viewed in a direction parallel to the uppermost surface of the first substrate, and
the electric conductor is coupled to a ground.
13. The high-frequency module according to claim 1 , wherein
a plurality of the conductor members are arranged at predetermined intervals along an outer edge of the high-frequency amplifier circuit in the plan view, and
the predetermined interval is less than or equal to λ/4, where λ represents a wave length of a high-frequency signal output from the high-frequency amplifier circuit.
14. The high-frequency module according to claim 1 , wherein
the plurality of high-frequency circuit components include a high-frequency amplifier module constituted of a plurality of the high-frequency amplifier elements and an inter-stage filter circuit arranged on a coupling path of the plurality of high-frequency amplifier elements.
15. The high-frequency module according to claim 14 , wherein
the plurality of high-frequency amplifier elements are all arranged on one of the uppermost surface of the first substrate and the lowermost surface of the second substrate, and
the inter-stage filter circuit is arranged on another one of the uppermost surface of the first substrate and the lowermost surface of the second substrate.
16. The high-frequency module according to claim 14 , wherein
the inter-stage filter circuit is a filter circuit attenuating a reception frequency band.
17. The high-frequency module according to claim 14 , wherein
the inter-stage filter circuit is a filter circuit attenuating a frequency band of a TV idle channel other than a channel being used among TV idle channels, or/and IMD noise.
18. The high-frequency module according to claim 1 , wherein
the high-frequency amplifier element is a power amplifier amplifying a transmission wave.
19. The high-frequency module according to claim 1 , wherein the right member comprises a first conductor member and a first via hole electrode, and the left member comprises a second conductor member and a second via hole electrode.