Design of Arrays of Linearly Polarized Patch Antennas on an FR4 Substrate: Design of a probe-fed electrically equivalent microstrip radiator

Design of Microstrip Antenna Array with Suppressed Back Lobe

“…This figure illustrates that back lobe of side by side configuration is higher than collinear one. Depending on the electrical dimensions of ground plane and substrate thickness, the back lobe grows to unacceptable values [2], [16]- [17]. An intuitive way to reduce the back lobe of side by side array is the compensation of fringing phase differences, making the E-plane radiation pattern symmetric and with a null at back lobe direction.…”

“…After the array project, the next step consists in the beamforming circuit design, presented below, contemplating the excitations above described. Having chosen the beamforming structure, the transition between the printed antenna and the beamforming circuit was designed following [2]. It is composed of a cylindrical probe (radius = 0.65 mm and length = 3.429 mm).…”

Double Layer Metamaterial Superstrate for Performance Enhancement of a Microstrip Patch Antenna

“…These requirements, namely high directivity is the major developing trends among antennas and always presents a great challenge to engineers working in this field. The traditional antenna technology to achieve the high directivity needs multiple radiating elements to fabricate the antenna array [1]. However, such array design requires a complex feed network, and the demands that the multiple antenna elements be maintained properly.…”

Performance Analysis of Probe-Fed Circularly-Polarized Moderately-Thick Microstrip Antennas Designed under the Null Reactance Condition

“…However, this basic structure can only handle low power and operates over a narrow frequency range. A simple way to overcome these limitations would be the use of a thick substrate [6]. Unfortunately, thick-substrate probe-fed antennas, designed according to the standard procedure (modes TM 01 and TM 10 excited at the same intensity and approximately equidistant from the operating frequency) [7], exhibit a highly inductive input impedance that cannot be properly matched to a 50- SMA connector [8].…”