A broadband proximity-coupled dual-polarized microstrip antenna with L-shape backed cavity for X-band applications

Extended Bandwidth Microstrip Circular Patch Antenna for Dual Band Applications

“…At a given operating frequency, lower dielectric constant of the substrate leads to larger bandwidth and larger size. From Table 4, it can be noticed that the dimensions and volume of the proposed Antenna-I and Antenna-II are much smaller than those presented in [1][2][3][4][5][6][7][8][9][10][11][12][13][14], but slightly larger than that in [21]. The listed dimensions in [21] are those of the printed patch and the dimensions of the ground plane are not given in [21] but they are obviously larger.…”

“…The achieved impedance bandwidth was 4.9%. A broadband proximity-coupled dual-polarized microstrip antenna with an L-shape backed cavity was presented [11]. The L-shape cavity enhances the feed coupling and thus broadens the bandwidth.…”

“…The obtained results of the proposed Antenna-I and Antenna-II are compared with those of the antennas presented in [1][2][3][4][5][6][7][8][9][10][11], [14][15][16], [21]. The comparison takes into consideration the total substrate dimensions and the volume of the antenna, frequency range, bandwidth, gain, as shown in Table 4.…”

Extremely low-profile wideband dual-polarized microstrip antenna for micro-base-station applications

“…The proximity‐coupled dual‐polarized microstrip antenna with an optimized L‐shape cavity backed ground plane in Ref. can get an extended bandwidth. Two different baluns feedings are designed to excite the slot‐etched patch orthogonally and the isolation and cross‐polarization are improved significantly .…”

“…2 In recent years, substantial efforts have been made to design microstrip antennas with low profile, high isolation, wide bandwidth, and low cross-polarization level. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Aperture coupling is a very effective technique to obtain wide bandwidth and high isolation. [3][4][5] In Refs.…”