in the recent years, interstitial brachytherapy implantation has become the treatment of choice for early stage prostate cancer patients. treatment of prostate cancer with radiation is traced back to 1909. originally this treatment modality was very crude and could not gain much popularity till 1982. advancements in radioactive source designs, introduction of new low energy radioactive sources,...

A 40-MS/sec 10-bit pipelined analog to digital converter (ADC) with a 1.2 Vpp differential input signal is proposed. The implemented pipelined ADC consists of eight stages of 1.5 bit/stage, one stage of 2 bit/stage, a digital error correction block, band-gap reference circuit & reference driver, and clock generator. The 1.5 bit/stage consists of a sub-ADC, digital to analog (DAC), and gain stag...

This paper presents a K-band two-stage power amplifier (PA) with compact circuit size of 1.8×0.87mm2. To guarantee broadband high-gain output performance, the optimal impedance domain and cell are determined through load/source-pull simulation K-point method, respectively. Reactive/resistive matching networks carefully employed to reduce equivalent gate capacitance, improve stability compensate...

In this project, we have designed a fully-differential operational transconductance amplifier with capacitive feedback network producing a close-loop gain of 0.2. The OTA was designed in the single-stage telescopic topology and simulation with HSPICE and achieved a very fast settling time of less than 5ns and a settling accuracy of at least 0.2%. The OTA has the differential output swing of ±1....

In this paper, two new high speed low power current comparators are proposed. The first comparator uses resistive load amplifiers in gain stage which is modified by including a resistive feedback in the gain stage for better speed. Simulations have been carried out on SPICE using TSMC 0.18um CMOS technology. The results show a resolution of ± 50 nA for both the comparators and an improved delay...

A new multistage multipath amplifier design technique is introduced that combines the formerly distinct phases of stage design and compensation. The result is an inherently stable n-stage amplifier whose gain-bandwidth product is not compromised as the number of stages is increased. The technique relies upon (n 1) systematic pole-zero cancellations to achieve a near first-order open-loop system...

A new high performance second-generation CMOS current conveyor architecture is presented. It is built using a differential flipped voltage follower as its input buffer stage and a cascode current mirror as output stage. It is characterized by very low output impedance. It provides gain independent high bandwidth when used to implement a programmable gain voltage amplifier. Simulation and experi...

this experiment was carried out to study effect of supplementary multi enzyme (0, 4 gr per 100 kg of diet) to corn-soybean meal based diets with different levels of tomato pomace (tp, 0, 2, 4, 6 and 8 %, respectively) on chick performance and carcass traits. four hundred and eighty 480 day-old chicks (ross-308) were employed [four replicates (n=20)] in a completely randomized experimental desig...

This paper presents a 30dBm (1W) class-E power amplifier projected in a standard 0.18-μm CMOS technology. The power amplifier (PA) consists in two differentials stages. The main stage employs a cascode class-E RF power amplifier with a self-biasing circuit. The driver stage uses the technique of Injection-Locking to substantially reduce the input power signal, maintaining a high gain. At 2.45 G...

Gain equalization of an EDFA is performed by introducing spectrally designed all-fiber filters in the midstage of a dual-stage fiber amplifier. Two types of filters are studied: a cascade of narrow-band Bragg gratings for discrete equalization of a finite number of channels and a wide-band Bragg grating performing equalization over the whole 1539 nm to 1557 nm range. In future work, it is plann...