A Linear Rectangular Dielectric Resonator Antenna Array Fed by Dielectric Image Guide With Low Cross Polarization

A Series-Fed Linear Substrate-Integrated Dielectric Resonator Antenna Array for Millimeter-Wave Applications

“…Recently, more effort has been devoted to DRA array design to increase the antenna gain for various microwave/ millimeter-wave systems [6][7][8][9][10][11][12][13][14][15][16][17]. Linear rectangular DRA arrays fed by the dielectric image guide (DIG) were investigated at X-band [6,7], and a DIG-fed double-sided DRA array was proposed at Ka-band with a peak gain of 15.8 dBi [8].…”

“…Linear rectangular DRA arrays fed by the dielectric image guide (DIG) were investigated at X-band [6,7], and a DIG-fed double-sided DRA array was proposed at Ka-band with a peak gain of 15.8 dBi [8]. By adding the reflector plane, the eight-element linear DRA array achieved the highest 15.7 dBi gain for microwave application [9].…”

“…Circularly polarized 2 × 2 wideband DRA array and low-sidelobelevel 1 × 6 DRA array achieved a peak gain of 12.17 dBi and 13.43 dBi at C-band, respectively [17]. However, for the abovementioned arrays in [6][7][8][9][10][11][12][13][14][15][16][17], the DRA elements are usually fabricated singly and assembled one by one, which means higher cost and larger mounting errors, especially for the large-scale arrays in millimeter-wave band. In order to improve the accuracy of the DRA array productions, a novel cofabricated approach for millimeter-wave DRA array designs was demonstrated using the multilayer printed circuit board (PCB) technology [18].…”

“…Moreover, different feeding techniques have been used to feed an array of DRAs, such as the dielectric image guide feed [6][7][8], the microstrip line feed [9][10][11][12]17], the radial-line waveguide feed [16], and the SIW feed [13][14][15]18]. Although the microstrip line feeding network is the most frequently employed, its power loss dominates as the operating frequency increases.…”

Millimeter-wave high gain parasitic tapered antenna made of high-resistivity silicon image-guide

“…Image-guides have been used to feed different types of antennas such as Dielectric Resonator Antennas [3], Dielectric Grating Antennas [4] and tapered/rod antennas [5]. Tapered antennas are the simplest type from the design perspective in addition to their natural wide radiation and matching bandwidth.…”