Applications of RF/microwaves in medicine

Rosen, A.; Stuchly, M.A.; Vorst, A. Vander

doi:10.1109/22.989979

Cited by 196 publications

(105 citation statements)

References 53 publications

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“…In such applications, the Class A amplifier consumes only a small portion of the total DC power, and the overall efficiency of the amplifying chain is not significantly affected. Class A RF PAs are also used for laboratory equipment (for example, very lowdistortion linear wideband amplifiers) or at microwave frequencies where it could be difficult to employ other classes of amplification [4]. The basic circuit and the operation of the Class A RF PAs are quite similar to those of the small-signal Class A amplifier.…”

Section: Introductionmentioning

confidence: 91%

Design and Simulation of Cascaded Class-A Microwave Power Amplifier

Siddique¹,

Abbas²,

Haider³

et al. 2013

IJECE

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-Microwave power amplifiers are the most significant components in wireless communications systems. As the technology continue to progress, the designers are facing new challenges and opportunities. The purpose of this work is to push the limits of efficiency and bandwidth of power amplifiers. The objective of this research is to design and build a prototype two stage Microwave power amplifier operated at 2.4 GHz with a linear region of operation up to our desired output of 0.5 watt or 27 dBm. The transistor used in the first stage is BFP540 while the output power of the first stage is the input of the second stage in which the ATF50189 transistor is used to for amplification. All the simulations and readings are taken by using AWR Microwave Office software. By using the load line Rl and the biasing points are achieved for both stages. The applications of our proposed device include many products in the field of microwave communications. One of the important applications of a Microwave power amplifier is in the output stage of a transmitter where a signal needs amplification before it is transmitted.

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Section: Introductionmentioning

confidence: 91%

Design and Simulation of Cascaded Class-A Microwave Power Amplifier

Siddique¹,

Abbas²,

Haider³

et al. 2013

IJECE

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“…The application of microwaves in medicine has recently obtained renewed attention within the scientific community through emerging techniques in breast cancer detection (microwave tomography and ultra-wide-band radar imaging), high power ablation as well as microwave angioplasty and lipoplasty (Rosen et al, 2002). Nevertheless, more established techniques reported in the literature based on RF/microwaves are hyperthermia and medical radiometry.…”

Section: Introductionmentioning

confidence: 99%

Non-invasive temperature monitoring during microwave heating applying a miniaturized radiometer

Jacobsen¹

2011

Microwave Heating

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“…In the wireless systems, an antenna is required for transmit or pick up a signal into or from the body. The most critical part of the biotelemetry systems is the structure of the antenna which is implanted in or attached to the body [14][15][16][17][18]. By means of the reconfigurable antennas, a single antenna can be used for different biomedical applications [19].…”

Section: Introductionmentioning

confidence: 99%

A Novel Reconfigurable Spiral-Shaped Monopole Antenna for Biomedical Applications

Salim¹,

Pourziad²

2015

PIER Letters

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Abstract-In this paper, a new reconfigurable antenna is introduced. This antenna is a printed spiralshaped monopole antenna with a compact structure. By embedding microwave switches in the structure of the antenna, different resonance frequencies can be achieved in different states of the switches. The introduced antenna is capable to cover two standard frequency bands for biomedical applications, i.e., Medical Implant Communication Service (MICS) and Industrial, Scientific and Medicine (ISM) bands. MICS band covers 402 MHz to 406 MHz and ISM covers 2.4 GHz to 2.5 GHz frequency range. The proposed antenna has a compact size of 32 mm × 50.3 mm × 1.8 mm, and it is fabricated on an FR4 substrate. The measurement results are in a good agreement with the simulations.

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Applications of RF/microwaves in medicine

Cited by 196 publications

References 53 publications

Design and Simulation of Cascaded Class-A Microwave Power Amplifier

Design and Simulation of Cascaded Class-A Microwave Power Amplifier

Non-invasive temperature monitoring during microwave heating applying a miniaturized radiometer

A Novel Reconfigurable Spiral-Shaped Monopole Antenna for Biomedical Applications

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