Dual-Band Low-Profile Corrugated Feeder Antenna

Abstract

A dual-operating-band planar horn antenna having very low profile is presented in this paper. By opening a subwavelength aperture into a corrugated conducting plate, good return losses and a narrow radiated beam in each of the two desired operating frequency bands can be measured. This behavior is very similar to that observed in optical wavelengths where enhanced transmission was measured through apertures etched in metallic corrugated plates. Here, the double-corrugated structure has been scaled into the microwave frequency range and the excitation has been done by a conventional closed metallic waveguide placed in the rear part of the structure. In this way, a new concept of a very low profile feeder is proposed with potential wireless applications.Index Terms-Double-periodic corrugated plate, dual-band, subwavelength aperture, very low profile feeder.

Gain Enhancement of Slot Antenna Using Grooved Structure and FSS Layer

“…In some works, the antenna gain can reach more than 15 dB only by introducing the grooves in the structure. Nevertheless, the size of the grooved structure is extensively large [15]. To maintain the feature of reduced size, a large flange is substituted by adding a single FSS layer above the antenna as described before.…”

“…In previous work, adding grooves in the flange obtains higher gain. But usually the dimensions of the flange are important [13][14][15]. For integration and packaging reasons, the dimensions of the metallic flange were limited in 30 mm×30 mm.…”

“…Usually, to create a high-gain antenna for radar systems, techniques based on array antenna [5][6][7], Electromagnetic Band Gap (EBG) or Electromagnetic meta-surface such as Frequency Selective Surface (FSS) [8,9] and Partially Reflecting Surface (PRS) [10,11] are widely used. Recently, slot antenna on a grooved structure has been developed in order to enhance radiation performances [12][13][14][15]. However, to achieve high-gain characteristic, the grooved structure has usually large dimensions.…”

Miniaturized Dual-Band Aperture Coupled Microstrip Antenna Using Corrugated Ground

“…It has been demonstrated that this phenomenon can be applied to the design of microwave antenna for improved performance [6][7][8][9]. In [6], a bull's eye corrugated structure is used as the ground plane of a patch antenna.…”

“…By modulating the bull's eye corrugated plate, a novel patch antenna with high gain and narrow beam-width is proposed. In [7], the horn antenna with high gain and narrow radiated beam is obtained by a double-periodic corrugated metallic plate. Since the upper operating frequency of this antenna is determined by the metallic plate thickness, the profile of the antenna is 12 mm.…”