Phased Array Antenna Panel Having Quad Split Cavities Dedicated to Vertical-Polarization and Horizontal-Polarization Antenna Probes
A phased array antenna panel includes a substrate over a metallic base, a semiconductor die situated over the substrate, the semiconductor die being coupled to a vertical-polarization antenna probe and to a horizontal-polarization antenna probe, where the vertical-polarization antenna probe is situated over a dedicated vertical-polarization cavity, and where the horizontal-polarization antenna probe is situated over a dedicated horizontal-polarization cavity. The dedicated vertical-polarization cavity and the dedicated horizontal-polarization cavity reduce coupling between the vertical-polarization antenna probe and the horizontal-polarization antenna probe. The semiconductor die also includes a radio frequency (RF) front end circuit coupled to the vertical-polarization antenna probe and the horizontal-polarization antenna probe.
1 . A phased array antenna panel comprising:
a substrate over a metallic base;
a semiconductor die situated over said substrate;
said semiconductor die being coupled to a vertical-polarization antenna probe and to a horizontal-polarization antenna probe;
said vertical-polarization antenna probe being situated over a dedicated vertical-polarization cavity and said horizontal-polarization antenna probe being situated over a dedicated horizontal-polarization cavity.
2 . The phased array antenna panel of claim 1 wherein said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity reduce coupling between said vertical-polarization antenna probe and said horizontal-polarization antenna probe.
3 . The phased array antenna panel of claim 1 wherein said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity each have a sector-shaped top opening.
4 . The phased array antenna panel of claim 1 wherein said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity each have a rectangular-shaped top opening.
5 . The phased array antenna panel of claim 1 wherein said semiconductor die further comprises a radio frequency (RF) front end circuit coupled to said vertical-polarization antenna probe and said horizontal-polarization antenna probe.
6 . The phased array antenna panel of claim 1 wherein said dedicated vertical-polarization cavity is situated adjacent to said dedicated horizontal-polarization cavity.
7 . The phased array antenna panel of claim 1 wherein at least one of said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity is an air cavity.
8 . A phased array antenna panel comprising:
a substrate over a metallic base;
a semiconductor die situated over said substrate;
said semiconductor die being coupled to two differential vertical-polarization antenna probes and two differential horizontal-polarization antenna probes;
said two differential vertical-polarization antenna probes are situated in respective dedicated vertical-polarization cavities;
said two differential horizontal polarization antenna probes are situated in respective dedicated horizontal -polarization cavities;
wherein said dedicated vertical-polarization cavities and said dedicated horizontal-polarization cavities reduce coupling among said antenna probes.
9 . The phased array antenna panel of claim 8 wherein said respective dedicated vertical-polarization cavities are situated on opposite sides of said semiconductor die.
10 . The phased array antenna panel of claim 8 wherein said respective dedicated horizontal-polarization cavities are situated on opposite sides of said semiconductor die.
11 . The phased array antenna panel of claim 8 wherein each of said respective dedicated vertical-polarization cavities is situated adjacent to one of said respective dedicated horizontal-polarization cavities.
12 . The phased array antenna panel of claim 8 wherein each of said respective dedicated vertical-polarization cavities and each of said respective dedicated horizontal-polarization cavities has a sector-shaped top opening.
13 . The phased array antenna panel of claim 8 wherein each of said respective dedicated vertical-polarization cavities and each of said respective dedicated horizontal-polarization cavities has a rectangular-shaped top opening.
14 . The phased array antenna panel of claim 8 wherein each of said respective dedicated vertical-polarization cavities and each of said respective dedicated horizontal-polarization cavities is an air cavity.
15 . A phased array antenna panel comprising:
a substrate over a metallic base;
a semiconductor die situated over said substrate;
said semiconductor die having a radio frequency (RF) front end circuit receiving antenna inputs from a vertical-polarization antenna probe and a horizontal-polarization antenna probe;
said vertical-polarization antenna probe being situated over a dedicated vertical-polarization cavity and said horizontal-polarization antenna probe being situated over a dedicated horizontal-polarization cavity.
wherein said RF front end circuit provides a combined horizontally-polarized signal and a combined vertically-polarized signal based on said antenna inputs.
16 . The phased array antenna panel of claim 15 wherein said antenna inputs are coupled to phase shifters in said RF front end circuit.
17 . The phased array antenna panel of claim 15 wherein said antenna inputs are coupled to low noise amplifiers in said RF front end circuit.
18 . The phased array antenna panel of claim 15 wherein each of said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity has a sector-shaped top opening.
19 . The phased array antenna panel of claim 15 wherein each of said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity has a rectangular-shaped top opening.
20 . The phased array antenna panel of claim 15 wherein each of said dedicated vertical-polarization cavity and said dedicated horizontal-polarization cavity is an air cavity.