A 5 GHz narrow‐beam leaky‐wave antenna using binomially distributed slot based substrate integrated waveguide

Abstract

This article presents a planar substrate integrated waveguide based leaky wave antenna (LWA) with narrow beamwidth, high directivity, and low side lobe levels (SLL). Through first‐time use of binomially distributed slots, a significant decrease in SLL along with a small form factor is achieved. Designed on a Rogers 5880 substrate, the proposed design occupies 250 × 45 mm2 exhibiting a beamwidth of 11.3° and sidelobe level less than −10 dB at 5.6 GHz. In comparison with conventional LWA with uniform slots, a 63% size reduction is also achieved.

On Decomposition-Based Surrogate-Assisted Optimization of Leaky Wave Antenna Input Characteristics for Beam Scanning Applications

“…Thus, the proposed method can be used not only for computationally efficient surrogate modelling but it can also be used to realize stop band suppression within the limits of unit element and array design for the selected operation bands. Furthermore, Table 5 provides performance comparison with state-of-the-art designs [19], [39][40][41][42][43][44][45][46][47][48]. As it can be observed, although the radiation performance of the considered LWA is inferior compared to some of the designs reported therein, it should be noted that the size of the array of Fig.…”

A unidirectional frequency beam‐scanning antenna using composite slow‐wave waveguide based on substrate integrated waveguide and spoof surface plasmon polariton structure

“…In recent years, the substrate integrated waveguide (SIW) has been widely used in the design of beam-scanning antennas [3,4], as an excellent planar waveguide with the features of low cost, low profile, and easy integration. Various types of SIW-based FBS antennas have been presented, such as slotted-SIW-based FBS antennas [5,6] and ridged-SIW-based FBS antennas [7]. By introducing periodic rectangular slots on the ridged-SIW, a planar beamscanning antenna with unidirectional radiation pattern was obtained [7].…”

A continual backward‐to‐forward beam scanning periodic microstrip leaky‐wave antenna with highly stable gain

“…In addition, it is important for the P‐LWA to maintain stable gain in the operational frequency band, but this question is often overlooked. In recent years, most of the proposed continual backward‐to‐forward beam scanning P‐LWAs cannot achieve stable gain in the operational bandwidth 11–20 …”