نتایج جستجو برای: rf cmos
تعداد نتایج: 52353 فیلتر نتایج به سال:
This paper presents an integrated front-end for ISM/WLAN applications at 17.3 GHz in 0.13 μm standard CMOS. The front-end chip includes an inductive source-degenerated low noise amplifier (LNA), a transformer-based Gilbert-mixer, an intermediate frequency (IF) amplifier and a buffer for the local oscillator (LO) input. The integrated receiver front-end achieves a gain of 34.7 dB, a SSB noise fi...
Abstract The concept, state of the art, and future development directions of hybrid semiconductor integrated circuits (HySICs), which combine RF-CMOS ICs with compound semiconductor monolithic microwave integrated circuits (MMICs) are described in this paper, taking up recent wireless technologies as example applications. It is shown that ICs with superior function can be designed by mixing the...
Mobile technologies have relied on RF switches for a long time. Though the basic function of the switch has remained the same, the way they have been made has changed in the recent past. In the past few years work has been done to use MEMS technologies in designing and fabricating an RF switch that would in many ways replace the electronic and mechanical switches that have been used for so long...
Nowadays, it is easy to find radio transceivers having small size, low cost and still offering numerous functionalities. High-integration of radio-frequency (RF) circuits is still the main trend in the development of wireless devices. A down-converter is an essential part of any RF receiver. It basically performs the frequency translation between an incoming RF signal into a lower frequency to ...
Title of Document: LOW POWER SMARTDUST RECEIVER WITH NOVEL APPLICATIONS AND IMPROVEMENTS OF AN RF POWER HARVESTING CIRCUIT. THOMAS STEVEN SALTER JR., DOCTORATE OF PHILOSOPHY, 2009 Directed By: Professor Neil Goldsman, Department of Electrical and Computer Engineering, University of Maryland Smartdust is the evolution of wireless sensor networks to cubic centimeter dimensions or less. Smartdust ...
در این رساله یک سنسور تصویر cmos هوشمند جهت استفاده در درون کپسولهای آندوسکوپی بی سیم wce طراحی و تشریح شده است. معماری پیشنهادی با فراهم ساختن امکان پردازش تصاویر در داخل کپسول آندوسکوپی بی سیم، از ارسال تصاویر بدون اطلاعات توسط مدار rf جلوگیری بعمل آورده و توان مصرفی را بشدت کاهش می-دهد. این تکنیک علاوه بر کاهش توان مصرفی موجبات تشخیص بلادرنگ (real-time) بیماری را امکان پذیر می-سازد. این عملک...
With the advent of submicron technologies, GHz RF circuits can now be realized in a standard CMOS process [1]. A major barrier to the realization of robust commercial CMOS RF components is the lack of adequate models which accurately predict MOSFET device behavior at high frequencies. The conventional microwave table-lookup-based approach requires a large database obtained from numerous device ...
This study presents the simulation, fabrication and characterization ofmicromechanical radio frequency (RF) switch with micro inductors. The inductors areemployed to enhance the characteristic of the RF switch. An equivalent circuit model isdeveloped to simulate the performance of the RF switch. The behaviors of themicromechanical RF switch are simulated by the finite element method software,Co...
In this paper, a differential multi-band CMOS low noise amplifier (LNA), operated in a wide range from 800MHz~1700MHz, with wide-band interference rejection, linearity improvement and the capacitive cross-coupling technology, is proposed. The proposed differential multi-band CMOS low noise amplifier with high linearity performance and good interference rejection performance. The post-simulation...
This paper provides a detailed description of the IBM SiGe BiCMOS and rf CMOS technologies. The technologies provide high-performance SiGe heterojunction bipolar transistors (HBTs) combined with advanced CMOS technology and a variety of passive devices critical for realizing an integrated mixed-signal system-on-a-chip (SoC). The paper reviews the process development and integration methodology,...
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