Performance Review of High-Quality-Factor, Low-Noise, and Wideband Radio-Frequency LC-VCO for Wireless Communication [Application Notes]

2011 ◽  
Vol 12 (4) ◽  
pp. 130-146 ◽  
Author(s):  
Mahmoud Moghavvemi ◽  
Aliyar Attaran
Keyword(s):  
Wireless Communication ◽  
Radio Frequency ◽  
Quality Factor ◽  
Low Noise ◽  
High Quality Factor ◽  
High Quality ◽  
Performance Review ◽  
Wideband Radio ◽  
Lc Vco

scholarly journals Status of a radio-frequency-based streak camera with subpicosecond time resolution

2001 ◽  
Vol 19 (1) ◽  
pp. 105-109
Author(s):  
P.A. BAK ◽  
R. CALABRESE ◽  
YU.D. CHERNOUSOV ◽  
V. GUIDI ◽  
L. GUIDI ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Quality Factor ◽  
Time Resolution ◽  
Streak Camera ◽  
Light Signal ◽  
High Quality Factor ◽  
Resolution Time ◽  
High Quality ◽  
Process Duration ◽  
Spiral Scanning

Usage of a cavity with a high quality factor in a streak camera (SC) allows us to increase the energy of electrons up to 100 keV and therefore to reduce the influence of some of the effects that limit the SC time resolution. Time resolution up to 1.4 ps on a prototype of a radio-frequency-based SC (RFC) with circular scanning was demonstrated earlier. Following this, the new RFC was produced. The possibility of achieving a time resolution of 0.6 ps for a 350-ps single light signal is demonstrated. Preparation for experiments with spiral scanning (sub-ps time resolution for 10-ns process duration) is in progress.

High-quality factor multipath differential fractal inductor for wireless applications

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sunil Kumar Tumma ◽  
Bheema Rao Nistala
Keyword(s):  
Integrated Circuits ◽  
Quality Factor ◽  
Skin Depth ◽  
Low Noise ◽  
Proximity Effects ◽  
High Quality Factor ◽  
Design System ◽  
High Quality ◽  
Content Type ◽  
Wireless Applications

Purpose The purpose of this study is to develop a high-quality factor fractal inductor for wireless applications such as satellite, WLAN, Bluetooth, microwave, radar and cellular phone. Design/methodology/approach The Hilbert fractal curve is used in the implementation of the proposed inductor. In the proposed inductor, the metal width has split into multiple paths based on the skin depth of the metal. The simulations of the proposed inductor are performed in 180 nm CMOS technology using the Advanced Design System EM simulator. Findings The multipath technique reduces the skin effects and proximity effects, which, in turn, decreases the series resistance of the inductor and attains high-quality factor over conventional fractal inductor for the equal on-chip area. Research limitations/implications The width of the path has chosen higher than the skin depth of the metal for a required operating frequency. Due to cost constraints, the manufacturing of the proposed fractal inductor is limited to a single layer. Practical implications The proposed inductor will be useful for the implementation of critical building blocks of radio frequency integrated circuits and monolithic microwave integrated circuits such as low-noise amplifiers, voltage-controlled oscillators, mixers, filters and power amplifiers. Originality/value This paper presents for the first time the use of a multipath technique for the fractal inductors to enhance the quality factor.

A Long Bar Type Silicon Resonator with a High Quality Factor

2014 ◽  
Vol 134 (2) ◽  
pp. 26-31 ◽  
Author(s):  
Nguyen Van Toan ◽  
Masaya Toda ◽  
Yusuke Kawai ◽  
Takahito Ono
Keyword(s):  
Quality Factor ◽  
High Quality Factor ◽  
High Quality ◽  
Type Silicon ◽  
Silicon Resonator
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