Dual-Polarized SIW Leaky-Wave Antenna Based on Mode-Multiplexed Feeding Structure

Millimeter‐wave end‐fire dual‐polarized frequency scanning antenna using LTCC technology

“…Notably, as illustrated in Figure 9, the implementation of amplitude weighting in the DP FSA design results in Discussion: Table 2 presents a performance comparison of the proposed antenna with other FSAs in recent studies. Notably, the antennas referenced in [11][12][13][14] demonstrate broadside radiation characteristics in FSAs. The antenna described in [8] is an end-fire FSA, which is limited to single-polarization radiation.…”

“…In this study, the deployment of a dual-mode feeding network leveraging MCTL technology substantially reduces the complexity of the antenna design. Compared with the dual-mode transmission structures adopted in the work [12] and [13], the SIW and SICL MCTL provides a more convenient method to adjust the DP scanning range, and nearly identical scanning ranges for the two polarizations are obtained. The novelty of this research also lies in its state as an mmW FSA.…”

“…This often leads to increased antenna size and complexity, as the feeding networks and radiation elements for both polarizations must be carefully superimposed to avoid interference and facilitate layout. Mode‐multiplexed feeding structure [13] or orthogonally placed long‐slot radiating structure [14] has been proposed as a solution approach. However, achieving beam overlap for the two polarizations, a prerequisite for widespread application, continues to be a significant challenge.…”

Dual‐polarised end‐fire antenna based on the high‐order mode of spoof surface plasmon polaritons

“…Recently, spoof surface plasmon polaritons (SSPPs) have attracted much attention because of their subwavelength field confinement and tunable dispersion characteristics [10]. Numerous SSPP-based leaky-wave antennas [11][12][13][14][15] and endfire antennas [16][17][18][19][20][21][22] have been proposed. In Ref.…”

“…[14], a leaky‐wave antenna with customisable polarisation is proposed by using orthogonal grooves. To design dual‐polarised leaky‐wave antennas, odd and even SSPP modes are used to excite two orthogonally polarised radiations from periodic dumbbell‐shaped patches [15]. Unlike the leaky‐wave antennas mentioned above, most SSPP‐based planar end‐fire antennas exhibit horizontal polarisation (HP).…”