In this research work, a multibeam antenna which is a combination of a beamformer network (BFN) and a linear array antenna, has been designed. A Rotman lens has been chosen as beamformer network and Vivaldi antennas have been selected for constructing array antenna. The Substrate Integrated Waveguide (SIW) was used for implementing Rotman lens. After explanation the structure of Substrate integ...

Rotman lenses are attractive candidates for use in beam forming networks (BFNs) for satellitebased direct radiating arrays. This paper will review the basic design equations for a Rotman lens and will describe Rotman lens synthesis and analysis software developed by the author. The synthesis tool, named RLDESIGN, is written in MATLAB to automatically and rapidly solve the Rotman lens equations ...

Rotman lens is a true-time-delay beam forming network with parallel plate structure. Owing to its frequencyindependency and wide-band operation, it has gained vast applications as feeding element of linear array antennas. However, the lens suffers from high intrinsic power loss and the problem worsens in microstrip structures by their inevitable dielectric loss. On the other hand, waveguides ex...

This paper presents the analytical design and numerical performance evaluation of novel V-band millimetre-wave (mm-wave) beamforming networks (BFNs), based on the Rotman lens array feeding concept. The devices are intended for operation in the unlicensed 60-GHz frequency band. The primary objective of this work is to study the feasibility of designing flexible V-band beamformers, based on liqui...