Millimeter-Wave High-Gain Frequency-Scanned Antenna Based on Waveguide Continuous Transverse Stubs

High Gain Periodic 2-D Leaky-Wave Antenna With Backward Radiation for Millimeter-Wave Band

“…This work, compared to other 2D LWAs provides the lowest SLL in both planes. It also shows better efficiency than the other [19], [26], and [27]. The gain of the proposed antenna is higher than the one given by [19].…”

“…In term of gain/size aspect, this work shows better performance than [23] and [26] since both antenna's sizes are large relative to their respective wavelengths. Although [27] shows wide scanning range, this value is related to its impedance bandwidth. When considering the 3-dB bandwidth, the scanning range is narrower (22.2°), and hence, this work provides wider scanning range.…”

“…Among these 2D leaky-wave antennas works, fewer works were assigned for mm-Wave band such as [26], [27], and [28]. A frequency-scanned antenna (FSA) based on continuous transverse stubs was proposed by [27].…”

“…Among these 2D leaky-wave antennas works, fewer works were assigned for mm-Wave band such as [26], [27], and [28]. A frequency-scanned antenna (FSA) based on continuous transverse stubs was proposed by [27]. By exciting the slots, through linear source generator (LSG) which fed by modified three-stage 1-to-8 power divider, with high quality quasi-TEM wave, the antenna achieves high performance with 29.2 dBi gain, 47% impedance bandwidth, -14 dB sLL, and 54°scanning ability.…”

A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements

“…The proposed antenna had wider bandwidth and scanning range along with the peak realized gain than [34][35][36][37] and in [35], only the SLL at the broadside is mentioned. There is no mention of SLL threshold for efficient scanning in any articles except [6,27,38,39]. The presented antenna had better scanning range than the first continuous scanning range of [6].…”