A low profile wideband pattern reconfigurable metasurface antenna

Abstract

A low profile electrically controlled pattern reconfigurable antenna with wide bandwidth is proposed in this article. The antenna is designed on two closely stacked substrates with a very low profile of 0.04λ0. On the top layer of the design is a periodic metasurface and two parasitic strips, and on the bottom layer is a metallic ground etched with rectangle slot. The feed line is designed on the middle layer to excite the metasurface patch antenna. Eight pin diodes are mounted between the parasitic metallic strips and the adjacent metallic metasurface patch cells for pattern reconfiguration. Two DC biasing voltages are employed to control the pin diodes. By changing the DC voltages, antenna can work at three different modes, and the main beam could be steered among 0°, +25°, and −25° directions. The prototype of the antenna is fabricated and the performance of the prototype is measured. The measured S parameters and radiation pattern show good agreement with the simulated results. The measured overlapped impedance matching bandwidth of the proposed antenna at all working modes is 18.3%. The proposed antenna has the advantages of low profile, high gain, wideband and adjustable main beam.

A 1‐bit reconfigurable metasurface antenna for ground penetrating radar application

“…The table shows that the proposed reconfigurable metasurface antenna has a smaller size than References [17,19] which can better meet the miniaturization requirements of the low-frequency radar system. Moreover, the proposed antenna has a higher peak gain and larger beam scanning angles than References [21][22][23]. In addition, the reconfigurable metasurface antenna has lower cost.…”

“…A single function system cannot meet the requirement of working and causes waste resources. In order to solve above problems, some researchers have proposed loading active devices such as PIN diode, Micro‐Electro‐Mechanical‐Systems on metasurfaces 15–24 . The type of metasurfaces is called reconfigurable metasurfaces, in which the binary states are usually represented by two different values of phases, amplitudes or polarizations.…”

“…In order to solve above problems, some researchers have proposed loading active devices such as PIN diode, Micro-Electro-Mechanical-Systems on metasurfaces. [15][16][17][18][19][20][21][22][23][24] The type of metasurfaces is called reconfigurable metasurfaces, in which the binary states are usually represented by two different values of phases, amplitudes or polarizations. In the last few years, some excellent works have been proposed.…”

Lower sidelobe phased array based on pattern reconfigurable elements

“…1 To realize wide-angle scanning in a phased-array antenna, the pattern reconfiguration technique has been proposed. [2][3][4][5][6][7] It has been found that combining the pattern reconfiguration technique with phased-array technology can overcome limitation and enable a variety of applications such as vehicle identification systems to be developed.…”

Design of a wideband planar printed pattern‐reconfigurable antenna and its application in wideband phased linear array

“…Based on phase reconfigurable synthesized transmission line (PRSTL) feeding structures, 15 a planar printed dipole radiator generates four radiation beams by switching five variable capacitance diodes. Moreover, micro‐strip patch antennas through implanting diagonal shorting probes, 9 introducing complementary split‐ring resonator (CSRR) defected ground structures, 10 loading vacarctor, 16 and using periodic meta‐surface 17 are also good candidates for realizing multi‐beam re‐configurability. Unfortunately, due to the narrow band characteristics of the micro‐strip radiators, most of them are exposed to limited operation bandwidth, usually only a few percent.…”