A Compact Double-Ridged Horn Antenna for Ultra-Wide Band Microwave Imaging

Diana, Stefania; Brizi, Danilo; Ciampalini, Chiara; Nenna, Guido; Monorchio, Agostino

doi:10.1109/ojap.2021.3089028

Cited by 8 publications

(2 citation statements)

References 35 publications

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“…A comparison of the NFD factors shows that the NFD of ORWG not only surpasses that of SGBW but is also higher than the reported NFD factors for MWI antennas in both Ref. [47, 48].…”

Section: Resultsmentioning

confidence: 67%

An ultra‐wideband compact design for hyperthermia: Open ridged‐waveguide antenna

Aram

Aliakbarian

Trefná

2022

IET Microwaves Antenna & Prop

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Antennas are the building block of radiative hyperthermia (HT) applicators. This study proposes a compact UWB antenna specifically tailored to meet the requirements for deep HT array applicators. The proposed Open Ridged‐Waveguide (ORWG) antenna, which is an adaptation of a double‐ridged horn antenna, operates over the frequency band of 400–800 MHz. It was experimentally assessed as a single element. The quality metrics considered were reflection coefficient, penetration depth, effective field size (EFS), and mutual coupling. The design shows a 75.5% fractional bandwidth with a reflection coefficient measured to be below −10 dB from 367 up to 820 MHz. The EFS is greater than the physical dimensions of the 3‐by‐4 cm aperture. The mutual coupling between two adjacent elements in the array, measured in a flat phantom arrangement, is lower than −30 dB throughout the entire band. The antenna's performance was further tested in two deep HT scenarios in order to assess the mutual coupling and focussing abilities while in the array configuration. To this end, phased array applicators consisting of 10 and 16 ORWG antennas were simulated in CST, and the results are presented for a homogeneous cylindrical muscle phantom and a realistic patient model, respectively. The good agreement between the simulated and measured results suggests that the antenna can be successfully used for HT.

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“…A comparison of the NFD factors shows that the NFD of ORWG not only surpasses that of SGBW but is also higher than the reported NFD factors for MWI antennas in both Ref. [47, 48].…”

Section: Resultsmentioning

confidence: 67%

An ultra‐wideband compact design for hyperthermia: Open ridged‐waveguide antenna

Aram

Aliakbarian

Trefná

2022

IET Microwaves Antenna & Prop

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“…In [21], a controlled, highly directional, and low scanning loss is achieved by the integration of two lenses. In [29,31,[41][42][43][44], multilayer metal horn antennas are designed on PCB boards, and the metal structure of the horn is simulated by metal via. The results presented show a wide bandwidth and high antenna gain.…”

Section: Introductionmentioning

confidence: 99%

Design of the Miniaturized and Thin Sliced-Type Beam Switching-Controlled Horn Antenna for D-Band

Chung,

Lin,

Meiy

2024

IEEE Access

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This paper proposes a design of a multilayer controlled beam horn antenna for the D-band. The multilayer design can achieve easy to control, low cost, and compact structure. The designed structure achieves the effect of a conventional horn antenna by stacking multiple layers and realizes the effect of beam switching by modifying the multi-layer plate structure. The widest bandwidth can be obtained when stacking 4 layers of boards, covering 24.7% (110-141GHz) of the bandwidth with a simulation gain of approximately 13.5dBi. By replacing the third plate structure, beam switching of ±30 degrees can be achieved, and the gain after beam switching can also reach 11.5 dBi. Horn, antenna, D-band, beam switching, multi-layer. INDEX TERMS

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An approach to determine pathological breast tissue samples with free‐space measurement method at 24 GHz

Toprak,

Gultekin,

Kayabasi

et al. 2024

Micro & Optical Tech Letters

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Pathology is an important branch of science in the diagnosis and treatment of several diseases. In cancer diseases, serious investigations have been made about the course of the diseases. A report that is essential for both the patient and the doctor is prepared by the pathologists as a result of a detailed cellular examination. These reports contain information about the disease. Access duration to these reports, which affects the form and duration of the treatment, is extremely important today. It is possible to shorten this period with systems using antenna technologies. The pathological breast tissue samples have been examined by using horn antenna structures with high gain in this study. Dual identical horn antennas have been placed opposite each other as receivers and transmitters in the measurement setup at 24 GHz. Measurements of normal and cancerous breast tissues have been made, and the normalization process has been applied to the measured scattering parameters. The different values between normal and cancerous breast tissues have been shown with this process. The normalized values are compared with other analyzed values. According to the results obtained, the percentage of normalized values for transmission is much more effective and meaningful than other results.

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A Compact Double-Ridged Horn Antenna for Ultra-Wide Band Microwave Imaging

Cited by 8 publications

References 35 publications

An ultra‐wideband compact design for hyperthermia: Open ridged‐waveguide antenna

An ultra‐wideband compact design for hyperthermia: Open ridged‐waveguide antenna

Design of the Miniaturized and Thin Sliced-Type Beam Switching-Controlled Horn Antenna for D-Band

An approach to determine pathological breast tissue samples with free‐space measurement method at 24 GHz

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