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Microwave Ablation at 10.0 GHz Achieves Comparable Ablation Zones to 1.9 GHz in Ex Vivo Bovine Liver

It is demonstrated that high-frequency microwave antennas may be used to create reasonably large ablation zones, and higher frequencies offer the advantage of smaller antenna size, which is expected to lead to less invasive interstitial devices and may possibly lead to the development of more compact multielement arrays with heating properties not available from single-element antennas.
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A Balun-Free Helical Antenna for Minimally Invasive Microwave Ablation

We present a balun-free coax-fed helical antenna for microwave ablation. The proposed antenna produces a localized specific absorption rate pattern at the desired frequency of operation without using…
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A Decoupling and Matching Network Design for Single- and Dual-Band Two-Element Antenna Arrays

This article presents a new decoupling and matching network (DMN) design for symmetric, single- and dual-band two-element antenna arrays. The DMNs use parallel-line-based coupling elements. The…
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The Performance of Higher Frequency Microwave Ablation in the Presence of Perfusion

Higher-frequency microwave ablation produces thermal lesions with volumes comparable to those achieved at lower frequencies, even in strongly perfused environments, as shown in this paper.
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Wideband Transmitarrays Based on Polarization- Rotating Miniaturized-Element Frequency Selective Surfaces

We present a new low-profile, wideband, transmitarray design based on polarization-rotating (PR), miniaturized-element, frequency-selective surfaces (MEFSSs). These MEFSS unit cells rotate the…
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Non-coaxial-based microwave ablation antennas for creating symmetric and asymmetric coagulation zones

We present an investigation of a new class of microwave ablation (MWA) antennas capable of producing axially symmetric or asymmetric heating patterns. The antenna design is based on a dipole fed by a…
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A Concurrently Dual-Polarized, Simultaneous Transmit and Receive (STAR) Antenna

A concurrently dual-polarized, simultaneous transmit and receive (STAR) antenna system with high transmit (TX)-receive (RX) isolation is presented. The STAR antenna consists of four dual-polarized…
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A Compact, Low-Profile Simultaneous Transmit and Receive Antenna With Monopole-Like Radiation Characteristics

A compact, vertically polarized simultaneous transmit and receive (STAR) antenna with a high transmit–receive isolation level and an omnidirectional radiation pattern in the azimuth plane is…
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A Wideband Millimeter-Wave Rotman Lens Multibeam Array Using Substrate Integrated Coaxial Line (SICL) Technology

This article presents a wideband Rotman lens multibeam array implemented with substrate integrated coaxial lines (SICLs) for millimeter-wave (mmW) applications. Unlike other dispersive transmission…
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A Minimally Invasive Coax-Fed Microwave Ablation Antenna With a Tapered Balun

We present a minimally invasive coax-fed dipole antenna with a tapered slot balun for microwave ablation (MWA) applications. The balun is created by gradually tapering the outer conductor of the…
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