Diagonal polarized pin-based cavity antenna array in planar technology

This contribution describes the design and characterization of a very compact 8-element proximity fed cavity antenna array realized completely in PCB technology. The cavities are formed by the placement of a series of through pins (vias) along a rectangular outline. Micro-strip lines excite the structure, and slot coupling is used to feed the...

Multi sector PCS-EBG antenna for low cost high directivity applications

This work proposes a new topology of antenna based on the use of Planar Circular Symmetric EBG with different periodicities. These periodicities are used to impose different propagation velocities of the dominant surface waves on different zones of the same dielectric substrate. The control of the dispersion characteristics guides the design...

The Ultrawideband Leaky Lens Antenna

A novel directive and nondispersive antenna is presented: the ultrawideband (UWB) leaky lens. It is based on the broad band Cherenkov radiation occurring at a slot printed between different infinite homogeneous dielectrics. The first part of the paper presents the antenna concept and the UWB design. The issues that are specifically addressed...

Dispersion properties of an array of slots etched at the interface between two infinite dielectric materials

An array of long slots, oriented along x, etched on a ground plane that separates two infinite dielectric materials constitutes the basic canonical problem investigated in this article. In a single slot structure, the direction of radiation and the attenuation constant could be directly linked to the dominant leaky wave pole (kxlw) that...

Multi beam imaging array based on leaky lens antennas

This paper proposes a novel imaging architecture suited for use in the mm and the submm wave regimes. The structure is composed by a one dimensional array of radiators in order to enhance the image acquisition time with respect to single element detection. Moreover each of the antenna elements composing the array is characterized by a relatively...

Leaky Lens Antenna for Multi-beam Imaging System

This paper proposes a novel imaging architecture suited for use in the mm and the sub-mm wave regimes. The structure is composed by a one dimensional array of radiators in order to enhance the image acquisition time with respect to single element detection. Moreover each of the antenna elements composing the array is characterized by a...

Phase center stable ultra wide-band antenna for EMC field sensing

Leaky lens antennas are linearly polarized directive antennas constituted by long slots etched on a ground plane that separates a dense dielectric, shaped to form a lens, from free space. These antennas are characterized by significant directivity, very low dispersion and they are suited to be integrated with the receive modules. These...

Design guidelines for the UWB pyramid antenna

In this paper a novel UWB directive and non dispersive lens antenna is presented. It is based on the broad band leaky wave radiation occurring at a slot printed between different homogeneous dielectrics. This paper presents the guidelines for the UWB design, the hardware demonstrator and pertinent measurements. The main motivation for this work...

The Pyramid Antenna: A Directive and Ultra Wide Band Leaky Lens Antenna

Wide band scanning arrays based on leaky wave radiation

A novel type of broadband integrated array scanning in one plane is proposed. Such arrays could be used for next generation airborne Synthetic Aperture Radars, or even UWB scanning arrays for automotive applications. The array is composed by broad-band leaky-wave slot elements radiating by means of a wedge shaped dielectric lens. The highest...

The Leaky Lens: A Broad-Band Fixed-Beam Leaky-Wave Antenna

A novel type of leaky-wave antenna is presented. Differently from previously reported leaky-wave antennas, it is characterized by a constant beam direction over a very wide range of frequencies. The radiation originates at a slot etched at the interface between air and a dense dielectric, which is shaped to form a cylinder of elliptical cross...

The Wide/Multi Band Leaky Wave Lens Antenna

The main idea of this work is to exploit this property for the first time and to realize wide-band and multi-band leaky wave lens antennas. In particular we will concentrate on the design of directive feeds for sub-mm wave applications. The key reason that renders the present leaky wave slot very suited for sub-mm sensing is that most of the THz...

Non Resonant Slots for Wide Band 2D Scanning Arrays

A novel type of broadband integrated array scanning in one plane is proposed. Such arrays are aimed to meet the requirements typically set for airborne Synthetic Aperture Radars, while allowing the highest degree of integration between the T/R modules and radiating elements. The array is composed by broad-band leaky-wave slot elements radiating...

A multi octaves directive dielectric lens: The Pyramid Antenna

Leaky wave antennas have been investigated for a long time and are typically an inexpensive solution for beam scanning antennas. We have designed a novel antenna topology, named the pyramid antenna, based on the broadband leaky concept. The pyramid antenna, currently covered by a patent application, has unparalleled bandwidth performances that...

Problem-Matched Basis Functions for Microstrip Coupled Slot Arrays Based on Transmission Line Green's Functions (TLGF)

Problem matched basis functions are proposed for the method of moments analysis of printed slot coupled microstrips. The appropriate equivalent currents of the integral equation kernel are represented in terms of two sets of entire domain basis functions. These functions synthesize on one hand the resonant behavior of slots, microstrips or...

Problem-Matched Basis Functions for Microstrip Coupled Slot Antennas based on Transmission Line Greens Functions

A general algorithm for the analysis of microstrip coupled leaky wave slot antennas was discussed. The method was based on the construction of physically appealing entire domain Methods of Moments (MoM) basis function that allowed a consistent reduction of the number of unknowns and of total computation time. The basis function obtained were...

Problem-Matched Basis Functions for Microstrip Coupled Slot Arrays based on Transmission Line Green+s Functions (TLGF)

A method is proposed for the analysis of arrays of linear printed antennas. After the formulation of pertinent set of integral equations, the appropriate equivalent currents of the Method of Moments are represented in terms of two sets of entire domain basis functions. These functions synthesize on one side the resonant behavior of the slot,...