Compact self-grounded Bow-Tie antenna design for an UWB phased-array hyperthermia applicator

UWB Planar Conical Horn-Shaped Self-Complementary Bow-Tie Antenna

An ultra-wideband (UWB) self-complementary planar bow-tie antenna (SCPBTA) is proposed. The antenna consists of a printed conical horn-shaped (CHS) radiator and a counterpart CHS slot etched on a rectangular ground plane. The printed CHS radiator is connected directly to the 50Ω microstrip line by bending the end portion of the feed line. As a result, the antenna has a simple structure which do...

A Planar Self-complementary Bow-tie Antenna for Uwb Applications

A new planar bow-tie antenna is proposed here for UWB applications. The self-complementary principle has been applied to a planar triangular monopole antenna along with bending the microstrip feed line. The antenna has a wider frequency band compared to the traditional bow-tie antenna, complies with the UWB requirements and it is directly matched to the (SMA) connector via 50Ω microstrip feed l...

A head and neck hyperthermia applicator: theoretical antenna array design.

PURPOSE Investigation into the feasibility of a circular array of dipole antennas to deposit RF-energy centrally in the neck as a function of: (1) patient positioning, (2) antenna ring radius, (3) number of antenna rings, (4) number of antennas per ring and (5) distance between antenna rings. MATERIALS AND METHODS Power absorption (PA) distributions in realistic, head and neck, anatomy models...

Wideband Microstrip-fed Printed Bow-tie Antenna for Phased- Array Systems

A microstrip-fed printed bow-tie antenna is presented in order to achieve wide bandwidth, high gain, and size reduction. A comparison between the bow-tie and the quasi-Yagi (dipole and director) antennas shows that the bow-tie antenna has a wider bandwidth, higher gain, lower front-to-back ratio, lower cross-polarization level, and smaller size. Two-element arrays are designed and their charact...

A Compact Modified Bow-Tie Antenna for High- Resolution GPR