Low-Cost and Low-Loss Phased Array Antenna Panel
A phased array antenna panel includes a first substrate over a metallic base, a plurality of cavities in the first substrate and the metallic base, a plurality of semiconductor dies situated over the first substrate, where at least one of the plurality of semiconductor dies is situated in a semiconductor package formed in a second substrate. The semiconductor die is coupled to at least one pair of antenna probes over one of the plurality of cavities. The semiconductor die is further coupled to electrical connectors configured to carry combined horizontally-polarized signals and combined vertically-polarized signals. Each semiconductor package partially covers four of the plurality of cavities. The first substrate may include FR-4 material. The second substrate may include Rogers® material.
1 . A phased array antenna panel comprising:
a first substrate over a metallic base;
a cavity in said first substrate and said metallic base;
a semiconductor die situated over said first substrate;
wherein said semiconductor die is coupled to at least one antenna probe over said cavity.
2 . The phased array antenna panel of claim 1 wherein said semiconductor die is situated in a semiconductor package formed in a second substrate.
3 . The phased array antenna panel of claim 2 wherein said antenna probe is in said second substrate, said antenna probe situated over said cavity.
4 . The phased array antenna panel of claim 1 wherein said cavity has a rectangular cuboid shape.
5 . The phased array antenna panel of claim 1 wherein said cavity has a cylindrical shape.
6 . The phased array antenna panel of claim 1 wherein said first substrate comprises FR-4 material.
7 . The phased array antenna panel of claim 2 wherein said second substrate comprises Rogers® material.
8 . The phased array antenna panel of claim 1 wherein said at least one antenna probe comprises a horizontal-polarization antenna probe.
9 . The phased array antenna panel of claim 1 wherein said at least one antenna probe comprises a vertical-polarization antenna probe.
10 . The phased array antenna panel of claim 1 wherein said cavity is an air cavity.
11 . A phased array antenna panel comprising:
a first substrate over a metallic base;
a plurality of cavities in said first substrate and said metallic base;
a plurality of semiconductor dies situated over said first substrate, at least one of said plurality of semiconductor dies is situated in a semiconductor package formed in a second substrate;
wherein said at least one of said plurality of semiconductor dies is coupled to at least one pair of antenna probes over one of said plurality of cavities;
wherein said semiconductor die is further coupled to electrical connectors configured to carry combined horizontally-polarized signals and combined vertically-polarized signals.
12 . The phased array antenna panel of claim 11 wherein said semiconductor package comprises four pairs of antenna probes.
13 . The phased array antenna panel of claim 12 wherein each of said four pairs of antenna probes extends over a corresponding one of said plurality of cavities.
14 . The phased array antenna panel of claim 11 wherein said semiconductor package partially covers four of said plurality of cavities.
15 . The phased array antenna panel of claim 11 wherein each of said plurality of cavities has a rectangular cuboid shape.
16 . The phased array antenna panel of claim 11 wherein each of said plurality of cavities has a cylindrical shape.
17 . The phased array antenna panel of claim 11 wherein said first substrate comprises FR-4 material.
18 . The phased array antenna panel of claim 11 wherein said second substrate comprises Rogers® material.
19 . The phased array antenna panel of claim 11 wherein said at least one pair of antenna probes comprises a horizontal polarization antenna probe and a vertical polarization antenna probe.
20 . The phased array antenna panel of claim 19 wherein said horizontal polarization antenna probe and said vertical polarization antenna probe are substantially perpendicular to each other.