A 77-GHz cavity antenna array in PCB technology

Abstract

In this paper the design and the implementation of a cavity antenna array in PCB technology for automotive radar applications is presented. The array consists of four cavity antennas fed by a microstrip-line feeding network and H-shaped coupling apertures in the ground plane. Simulation and measurement results show that the proposed structure is a suitable candidate for the integration in automotive radar sensors.

Optimization of a MIMO radar antenna system for automotive applications

“…3 and also from the fabricated prototype shown in Fig. 4, the radiating elements are 8-element cavity antenna arrays based on the design presented in [14]. However, unlike the design described in [14], in this case a series feeding is employed.…”

“…4, the radiating elements are 8-element cavity antenna arrays based on the design presented in [14]. However, unlike the design described in [14], in this case a series feeding is employed. To take into account the physical dimension of the arrays and to avoid overlapping of the columns, as an additional constraint in the algorithm the minimum distance between the antenna arrays d min has been set to 1.17λ 0 at 77 GHz.…”

“…The surface wave excitation is indeed strong for a cavity antenna [14] and for this reason the radiation pattern is not perfectly smooth. By considering a threshold of 0.6, the ambiguity-free region is confined within ±15…”

A 77‐GHz polarization‐agile microelectromechanical system antenna

“…A slot antenna and a dipole antenna in package are reported in the literature at 77 GHz. An array of 2 × 12 and 4 × 12 linearly polarized patch antenna, cavity, and patch antenna (SIW‐fed; series‐fed) (SIW is referred as substrate integrated waveguide) is reported for short‐, medium‐, and long‐range radar applications at 77 GHz, respectively.…”