Results 81 to 90 of about 6,460 (218)

A Spectral-Scanning Nuclear Magnetic Resonance Imaging (MRI) Transceiver [PDF]

, 2009
An integrated spectral-scanning nuclear magnetic resonance imaging (MRI) transceiver is implemented in a 0.12 mum SiGe BiCMOS process. The MRI transmitter and receiver circuitry is designed specifically for small-scale surface MRI diagnostics ...
Babakhani, Aydin, Hajimiri, Ali, Hassibi, Arjang   +2 more
core   +1 more source

Active quasi circulator: Comprehensive review and performance comparison

Engineering Reports, Volume 6, Issue 6, June 2024.
To cope up with the increased data transmission rate due to the modern multiband wireless communication systems, the three‐port circulator must be equipped with the ability to operate in different frequency levels while having adequate bandwidth. Thus, designing circulator as an antenna interface device becomes a challenging, particularly active‐quasi ...
Mehedi Hasan, Sujan Chowdhury, Hasan U. Zaman   +2 more
wiley   +1 more source

A 14-mW PLL-less receiver in 0.18-μm CMOS for Chinese electronic toll collection standard [PDF]

, 2014
This is the accepted manuscript version of the following article: Xiaofeng He, et al., “A 14-mW PLL-less receiver in 0.18-μm CMOS for Chinese electronic toll collection standard”, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 61(10):
Duan, Lian, He, Xiaofeng, Ma, Chengyan, Sun, Yichuang, Zhu, Xi   +4 more
core   +2 more sources

A compact 60‐GHz on‐chip bandpass filter in GaAs technology

Electronics Letters, Volume 60, Issue 7, April 2024.
A compact 60‐GHz on‐chip bandpass filter (BPF) is presented using gallium arsenide (GaAs) technology. The measurements show that it has a centre frequency of 60.2 GHz with a bandwidth of 14%, and the minimum insertion loss (IL) within the passband is 2.57 dB. The chip size, excluding the feedings, is about 0.265 mm × 0.184 mm. Abstract A compact 60‐GHz
Kai‐Da Xu, Shangjing Xi, Hairui Liu, Shichang Chen   +3 more
wiley   +1 more source

Chessboard FPA in 130-nm SiGe BiCMOS for High-Resolution Passive Terahertz Imaging

IEEE Journal of Microwaves
This work presents a chessboard focal plane array (FPA) camera with state-of-the-art thermal and spatial resolution in the 200–$600 \,\mathrm{G}\mathrm{Hz}$ frequency range.
Martijn Hoogelander, Marco Spirito, Batuhan Sutbas, Corrado Carta, Nuria Llombart, Maria Alonso-delPino   +5 more
doaj   +1 more source

Morphological Relaxation of Strained Epitaxial Films for Stripe‐Geometry Devices

Advanced Materials Technologies, Volume 9, Issue 4, February 19, 2024.
A new morphological evolution describing the relaxation of a strained epitaxial film deposited on a pattern with a stripe geometry is reported, paradigmatic of 2D like systems, and characteristic of transistors channels geometry. Both the elastic equation and surface diffusion equation are analytically solved, and reveal the different resulting ...
Kennet D. R. Hannikainen, Fabien Deprat, Olivier Gourhant, Isabelle Berbezier, Jean‐Noël Aqua   +4 more
wiley   +1 more source

A 19‐GHz low‐phase‐noise frequency synthesizer for a K‐band FMCW radar sensor of detecting micro unmanned aerial vehicles

Electronics Letters, Volume 60, Issue 2, January 2024.
Abstract A 19‐GHz low‐phase‐noise PLL‐frequency synthesizer is presented in this letter that is intended to be used in a K‐band FMCW radar which requires strict phase noise for detecting a small unmanned aerial vehicle. The 17.9 to 19.5‐GHz PLL includes a Darlington cross‐coupled capacitive‐degeneration VCO which presents higher maximum attainable ...
Jayol Lee, Kyung Hwan Park, Bon Tae Koo
wiley   +1 more source

Characterization of an embedded RF-MEMS switch [PDF]

, 2010
An RF-MEMS capacitive switch for mm-wave integrated circuits, embedded in the BEOL of 0.25μm BiCMOS process, has been characterized. First, a mechanical model based on Finite-Element-Method (FEM) was developed by taking the residual stress of the thin ...
Ehwald, K. E., Gurbuz, Yasar, Gürbüz, Yaşar, Kaynak, Mehmet, Korndorfer, F., Korndörfer, F., Scholz , Rene, Sun, Y. M., Tillack, B., Wipf, C., Zihir, Samet   +10 more
core   +1 more source

An X-Band low-power and low-phase-noise VCO using bondwire inductor [PDF]

Advances in Radio Science, 2009
In this paper a low-power low-phase-noise voltage-controlled-oscillator (VCO) has been designed and, fabricated in 0.25 μm SiGe BiCMOS process. The resonator of the VCO is implemented with on-chip MIM capacitors and a single aluminum bondwire.
K. Hu, F. Herzel, J. C. Scheytt
doaj  

A 216–256 GHz fully differential frequency multiplier-by-8 chain with 0 dBm output power [PDF]

, 2018
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence
Borngräber, Johannes, Eissa, Mohamed Hussein, Kissinger, Dietmar, Ko, Minsu, Malignaggi, Andrea, Schmalz, Klaus, Ulusoy, Ahmet Cagri   +6 more
core   +1 more source