Coaxial Right/Left-Handed Transmission Line for Electronic Beam Steering in the Slotted Waveguide Antenna Stiffened Structure

Split-ring resonator loaded miniaturised slot for the slotted waveguide antenna stiffened structure

Leaky wave antenna with amplitude controlled beam steering based on composite right/left-handed transmission lines

An antenna comprising two different composite right/left-handed transmission line structures is proposed which enables easy beam steering at an operation frequency of 10 GHz. The composite right/left-handed transmission lines are based on planar, periodically arranged via free unit cells, implemented in microstrip technology. Both transmission lines exhibit the infinite wavelength phenomenon wh...

Design of Millimeter-wave Slotted-Waveguide Planar Antenna for Sub-array of Beam-scanning Antenna

Beam-scanning antennas are attractive for high-bit-rate data communication systems and high resolution sensing systems in millimeter-wave band. Waveguide antenna is one of the most attractive antennas for such millimeter-wave systems because of its low loss and high efficiency characteristics in high frequency band. Horizontally-beam-scanning antennas such as phased arrays and DBF (Digital Beam...

Slotted waveguide antenna with a near-field focused beam in one plane

-A slotted waveguide providing a two dimensional near-field focused beam is presented in this paper. This antenna focuses the beam in the E-plane and provides a wide beam in the H-plane in order to illuminate a linear array, as reflector transmit-array antenna with a small width (100mm) and a very large length (1530mm) located in the near-field region. The simulated field distribution on the ar...

Leaky Wave Antenna Using Composite Right/Left- Handed Transmission Line with Rectangular Feeding Structure

A leaky wave antenna (LWA) using composite right/left-handed (CRLH) transmission line (TL) composed of ladder network has been investigated [1]. The effect of transmission line length and height on the gain and bandwidth is clarified in [1]. In order to increase the gain of the LWA, mushroom-shaped unit cell has been investigated in [2]. Chip capacitance is used for series capacitance. The band...