Low-profile and low-scattering ultra-broadband phased array based on polarization-selective absorber loading
A wave absorber and selective technology, which is applied in the direction of separately energized antenna array, radiating element structure, and mid-position feed between antenna endpoints, can solve problems such as RCS reduction, achieve reduced scattering, low profile characteristics, Reduce the effect of antenna scatter
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] refer to Figure 1 to Figure 2 , Embodiment 1 is composed of a layer of periodic structure printed with closely arranged even units, using periodic boundary conditions to simulate the simulation of the present invention in an infinite array environment. The structure of the antenna unit of the present invention is described as follows: the unbalanced feeding structure (1) of the antenna; the metal short-circuit column (2) for suppressing common mode resonance; the metal floor (3) with a certain thickness; The dielectric substrate (4); the dipole radiation unit (5); the capacitor sheet (6) on the back of the dipole unit; the polarization grid (7) printed on the back of the radiation unit; the first wide-angle impedance matching layer (8 ); the second layer wide-angle impedance matching layer (9); the first layer has a snake-shaped resistive patch (10) with self-coupling capacitance; the parallel capacitive block (11) loaded at the end of the first layer resistive patch u...
Embodiment 2
[0031] specifically. Each antenna element (such as figure 2 shown) are extended along the two-dimensional direction of the array respectively to form figure 1 A low-profile low-scattering ultra-broadband phased array loaded with 7×14 polarization-selective absorbers. Other structures are the same as those in Embodiment 1, and will not be repeated here.
[0032] Considering the conditions of the existing simulation hardware facilities, the RCS of the array antenna in the first embodiment adopts the unit analysis method for the RCS of the phased array antenna in the electromagnetic simulation, and the unit is simulated under periodic boundary conditions. Figure 7 to Figure 9 A comparison chart of single-station RCS results at different angles of incidence is given in Example 2 and Example 2 without absorbers. It can be seen that the phased array developed in Example 2 has good low RCS characteristics.
[0033] In this implementation example, the array is figure 2 A 10×10 ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More