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Tumours remain a common and challenging multidisciplinary clinical problem, and there is a constant need for innovative tumour diagnostic and treatments modalities that are accurate, efficacious, harmless and cost effective. Microwaves and RF will provide in the near future an alternative to present systems. Primary hepatocellular carcinoma (HCC) and metastatic colorectal hepatic metastasis tumours...
This lecture will begin with the definition, history and evolution of Software Defined Radio (SDR). RF/microwave engineers will find it clear and understandable because analogies will be made to conventional classic radio systems and components. The lecture will then introduce the concepts of oversampling and undersampling as it applies to SDR. There will be an introduction to the details of correctly...
The interaction of electromagnetic fields and biological tissues is relevant in various technical applications. The design of medical equipment and treatment plans generally benefits greatly from simulation; additionally, simulation can give insight into living tissue where measurement is almost impossible. This also holds for all kinds of wireless communication devices surrounding us such as mobile...
Breast cancer imaging by microwaves has been investigated intensively over the past two decades due to the potentially high electrical contrasts between malignant tumors and normal breast tissue, but so far clinically successful systems have been rare. We will describe challenges in achieving such a system, and ways to improve the resolution of microwave imaging. We will also report on our recent...
An optical linear phased array designed for a wide-angle scanning is presented. To facilitate a wide-scanning capability while avoiding grating lobes, the inter-element spacing smaller than one wavelength is selected. A patch antenna radiating element coupled to a Silicon dielectric waveguide is designed. The simulation results for the single antenna and a linear array are presented.
Tailoring electrodynamical phenomena of radiation, emission, and scattering with auxiliary surrounding structuring is one of primary objectives of fundamental and applied investigations nowadays. Resent interests in optical frequency range are partially related to engineering of light-matter interaction dynamics with applications to invisibility cloaking, quantum information devices, optical interconnects...
Field effect transistor (FET) or bipolar junction transistor (BJT) based circuits, involving emitter/source degeneration by any general impedance are widely known for their positive effects on circuit performance. The circuit's behavior like input-output impedances, trans-admittance, voltage and power gains of such topologies are well known. In this paper, we propose to analyze the topology by looking...
In this work, a new SiGe mixer circuit topology operating with the second harmonically pumped mixing technique is proposed. The proposed circuit is developed for to be used in IC receivers which use Zero-IF mixers at their front ends. The Analysis of the circuit is performed and the appropriate operation conditions for second harmonically pumped mixing are investigated. The topology is quite suitable...
We consider the general concept of quantum field quantization in the nano-antenna modeled as an atomic chain. We show that the transformation of quantum near-field to the far-field is accompanied by the transformation of the quantum state of light. As a result, transmitting and receiving antennas cannot be considered separately, which has no analogs in classical antennas. Such behavior stems from...
In this paper, we investigate the applicability of parallel sequence spread spectrum (PSSS) modulation in high bandwidth millimeter wave communication systems using a 240GHz monolithic microwave integrated circuit (MMIC) based radio frequency (RF) frontend. The transmitter (Tx) and receiver (Rx) are connected directly via an attenuator in an incoherent back-to-back setup using two independent local...
The concept of electromagnetic crosstalk in nano-circuits via quantum entanglement between the elements is considered. Manifestation of this effect in electromagnetic compatibility (EMC) and a solution for for its suppression are discussed.
This paper discusses an active on-chip multiplier for mm-wave generation, implemented in CMOS 65nm TSMC technology. The multiplying is done within single stage, which is connected via wire bonds to 4 stage PA, reducing the DC power consumption to 360 mW, 80 mW for the multiplying stage and 280 mW for the PA. Total core silicon area of 0.92 mm2, 0.31 mm2 the multiplier area and 0.61 mm2 the PA area...
Solid State Transistor Device Technology is ubiquitous in communications, radar, electronic warfare, and instrumentation applications. This abridged presentation will cover Si LDMOS, PHEMT, InP HEMT/MHEMT and GaN HEMT. Content includes principles of operation, structures, characteristics, classes of operation, and device state of the art benchmarks. The art of power amplifier design is approached...
An improvement of IEC-61123 in the field of sequential probability ratio test (SPRT) is proposed. The current standard does not provide a proper solution for modern industry's needs, and the test plans are not up-to-date with the knowledge in the area of sequential tests. The advantages of the proposed version are reflected by the efficacy and accuracy of the tests, the wider range of the ready to...
This article is dedicated to the new procedure of synthesizing microwave devices which provides size reduction of conventional microstrip structures. In the proposed method traditional transmission lines are replaced with microstrip lowpass filters having the same phase response on the frequency of interest. As an example the usage of this procedure is shown on miniaturization of a branch-line coupler...
In this paper, we present a reconfigurable band pass filter (BPF) design based on a periodic frequency selective surface (FSS) structure. Using varactors, which are included in the unit cell of the FSS, we may change the frequency response of the FSS, as shifting the center frequency and changing the Q factor. Using such approach, it is also possible to design FSS with a miniaturized unit cell. The...
Receiver algorithm of ultra-wideband signals based on Markov theory of nonlinear filtering is designed. Analysis of receiver efficiency rests on the digital simulation of signal mixed with white Gaussian noise. It is shown that the developed algorithm has better quality in comparison with adaptive filtering algorithm and allows processing the ultra-wideband signal with speeds up to 100 Mbit/s.
This paper presents a system simulation of wireless telemetry for a bio medical application. The idea is for the patient to swallow a capsule that then travels through the digestive tract or alimentary canal of the human body. Passing internal organs of different sizes and density making the communication between the capsule and the receiver more complex. The capsule includes a battery, transmitter,...
The electromagnetic (EM) properties of tannin-based rigid carbon foams were investigated in the 26–37 GHz microwave frequency range (Ka-band). It was experimentally proved that 2 mm thick carbon foams of 36–61 mg/cm3 density are almost not transparent to microwave radiation, and this is especially true for the densest foams having the smallest mean cell size. Depending on both cell size and bulk density,...
In present work we discuss the usage of empirical mode decomposition algorithm for bioradar data processing. The algorithm of data processing is considered and the value of the threshold criteria is chosen according to the results of the experimental data processing. It is shown that preprocessing of raw bioradar data, which compensate the difference in amplitude of breathing and heartbeat signals,...
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