Substrate-Integrated Waveguide PCB Leaky-Wave Antenna Design Providing Multiple Steerable Beams in the V-Band

Abstract

Abstract:A periodic leaky-wave antenna (LWA) design based on low loss substrate-integrated waveguide (SIW) technology with inset half-wave microstrip antennas is presented. The developed LWA operates in the V-band between 50 and 70 GHz and has been fabricated using standard printed circuit board (PCB) technology. The presented LWA is highly functional and very compact supporting 1D beam steering and multibeam operation with only a single radio frequency (RF) feeding port. Within the operational 50-70 GHz bandwidth, the LWA scans through broadside, providing over 40 • H-plane beam steering. When operated within the 57-66 GHz band, the maximum steering angle is 18.2 • . The maximum gain of the fabricated LWAs is 15.4 dBi with only a small gain variation of +/−1.5 dB across the operational bandwidth. The beam steering and multibeam capability of the fabricated LWA is further utilized to support mobile users in a 60 GHz hot-spot. For a single user, a maximum wireless on-off keying (OOK) data rate of 2.5 Gbit/s is demonstrated. Multibeam operation is achieved using the LWA in combination with multiple dense wavelength division multiplexing (WDM) channels and remote optical heterodyning. Experimentally, multibeam operation supporting three users within a 57-66 GHz hot-spot with a total wireless cell capacity of 3 Gbit/s is achieved.

Single Radio-Over-Fiber Link and RF Chain-Based 60 GHz Multi-Beam Transmission

“…The use of Subcarrier Multiplexing (SCM) [13]- [17] with a single RoF transport link can provide high system capacity and support for large numbers of users [18], [19]. The LWA is a steerable directive antenna which operates in the 60GHz-band [20] and requires only a single feed input port. The LWA scans its beam angle with changing RF, effectively converting different RFs in the SCM to Spatial Division Multiple Access (SDMA).…”

A Radio over Fiber System with Simultaneous Wireless Multi-Mode Operation Based on a Multi-Wavelength Optical Comb and Pulse-Shaped 4QAM-OFDM

“…Microwave photonic link (MPL), microwave transmission over an optical fiber, or radio over fiber (RoF) are considered as good solutions for high speed wireless transmission [1][2][3][4][5][6][7][8][9][10] due to its low cost, its simple system architecture, its anti-interference, its large bandwidth, its low transmission loss, and its low power consumption. With the increase of new optical communication system [11][12][13][14] services, the ultra-high speed and high spectrum efficiency have become primary demands for improving microwave photonic transmission.…”

Wide-Angle Beam Scanning Leaky-Wave Antenna Using Spoof Surface Plasmon Polaritons Structure

“…Because a fast wave transmission line (TL) can feed a LWA to radiate, the initial design of LWAs are based on the waveguides supporting fast wave modes, such as slotted rectangular waveguides [2] and substrate integrated waveguides [3]. Many periodic structures operating on space harmonic waves are explored to feed LWAs, such as microstrip lines, groove waveguides and metamaterials structures [4][5][6]. With the rapid development of integrated circuits, planar antennas with single-layer conductors are explored.…”