This article describes the evaluation of a novel method of tissue displacement for use in the elastographic visualization of radio-frequency (rf) ablation-induced lesions. The method involves use of the radio-frequency ablation electrode as a displacement device, which provides localized compression in the region of interest. This displacement mechanism offers the advantage of easy in vivo impl...

At 14:30 I will give a short introduction to my thesis You are most welcome to attend the introduction, the defense and the reception afterwards. Abstract Tunable on-chip Radio Frequency (RF) filtering is highly desirable for cost effective wireless communication devices. As mobile wireless devices increasingly support multiple RF-bands, tunable RF filtering is wanted. The tremendous growth of ...

Title of thesis: RESONANT CIRCUIT TOPOLOGY FOR RADIO FREQUENCY ENERGY HARVESTING Negin Shahshahan, Master of Science, 2012 Directed by: Professor Neil Goldsman Department of Electrical and Computer Engineering In this work the operation of a MOSFET based rectifier, composed of multiple stages of voltage doubler circuits used for radio frequency (RF) energy harvesting, is investigated. Analytica...

Design of RF/IF Analog to Digital Converters for Software Radio Communication Receivers. (May 2006) Bharath Kumar Thandri, B.E. (Hons.), Birla Institute of Technology and Science (BITS), Pilani, India; M.S., Texas A&M University Chair of Advisory Committee: Dr. Jose Silva-Martinez Software radio architecture can support multiple standards by performing analogto-digital (A/D) conversion of the r...

A goal in the software radio design philosophy is to place the analog-to-digital converter as near the antenna as possible. This objective has been demonstrated for the case of a single input signal. Bandpass sampling has been applied to downconvert, or intentionally alias, the information bandwidth of a radio frequency (RF) signal to a desired intermediate frequency. The design of the software...

Orthogonal frequency division multiplexing (OFDM) as a modulation technology, it transmit over both wireless and optical channel, and it distribute the data over a large number of subcarrier can be overlapping. It achieved RF signal for the long haul transmission using RoF system. The RoF (Radio over Fiber) system is referred to increase the high orthogonality of the OFDM modulation signal for ...

Amorphous carbon films were obtained by remote microwave plasma enhanced chemical vapour deposition (RMPECVD). In this process, a mixture of argon and hydrogen is excited in the microwave discharge while methane is injected in the afterglow. The substrates are radio-frequency (RF) biased in order to improve the film properties. Three configurations have been compared : microwave, RF, and mixed ...

This paper presents a new programmable radio frequency (RF) system for a System-onChip (SoC) transceiver. A 5-GHz low noise amplifier (LNA) is integrated with an on-chip programmable RF circuits using 0.18μm SiGe technology. Proposed system is very useful for concurrent RF ICs in a complete RF system environment. The programmable circuit helps it to provide DC output voltages, hence, making the...

A 1.2V 5GHz low-cost voltage-controlled oscillator (VCO) with active common mode feedback has been implemented in a CMOS/RF 90nm technology for a robust I/Q generation using a frequency divider-by-2 (DIV2). As the input common mode of the DIV2 affects critically its performance, a calibration method to correct the output common mode of the VCO has been proposed and validated through post-layout...

This paper deals with a relatively new area of radio-frequency (RF) technology based on microelectromechanical systems (MEMS). RF MEMS provides a class of new devices and components which display superior high-frequency performance relative to conventional (usually semiconductor) devices, and which enable new system capabilities. In addition, MEMS devices are designed and fabricated by techniqu...