Microwave
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Recent papers in Microwave
The lumped-element electrical equivalent circuit of nichrome (NiCr) resistors is important for monolithic microwave integrated circuit (MMIC) design. This paper presents a methodology for the RF parameter extraction of thin-film NiCr... more
Microwave methods, both passive and active, play an important role amongst modern diagnostics of fusion plasma research. Microwave Reflectometer is used to measure plasma density profile and its fluctuations. Electron Cyclotron Emission... more
A semi-flexible double-ridge waveguide comprises a corrugated tube formed into a special dumbbell-shaped cross-section defined by parameters which are conveniently optimized to realize improved power-handling capability as well as... more
By measuring the drift velocity of electrons in diamond as a function of applied electric field, we demonstrate that ultra-pure diamond exhibits negative differential electron mobility in the [100] direction below 140 K. Negative... more
This article communicates the study of both the dielectric properties of human colostrums and breast milk at microwave frequencies. The colostrum samples were taken immediately after child birth and breast milk samples were collected at... more
Satellite Digital Audio Radio Service's (SDARS) reception over 2320-2345MHz can be blocked by cellular transmissions in the neighbouring bands. In vehicles, the blocking is exacerbated by SDARS sharing a common radome with cellular... more
To improve efficiency of non-invasive monitoring of the internal brain temperature, a small-size single-channel microwave radiothermograph consisting of a miniature radiometer and a radiometric sensor based on a printed antenna was... more
Coplanar waveguide (CPW) transmission lines periodically coupled to split-ring resonators (SRRs) are analyzed, designed, and characterized. Due to inductive coupling between the lines and SRRs, signal propagation is inhibited in the... more
RF/microwave amplifying devices have unit-to-unit gain variability. So, in some critical applications such as the low noise amplifier (LNA) in cellular basestations, the gain has to be adjusted in production using a voltage-variable... more
Slow wave coplanar transmission lines (S-CPW) based on conventional coplanar CPW transmission lines with a floating patterned ground plane are good candidates for the integration of distributed RF circuits for front-end modules. They... more
Remote sensing technology's increasing accessibility helps us observe research and learn about our globe in ways we could only imagine a generation ago. Guides to profound knowledge of historical, conceptual and practical uses of remote... more
Bi4(SiO4)3 ceramics were synthesized and their microwave dielectric properties were investigated. The Bi12SiO20 second phase was formed at approximately 400°C, while the Bi2O2SiO3 and Bi4(SiO4)3 phases started to form at 600°C. The amount... more
PIN diodes are the ubiquitous "nuts & screws" components that hold together RF equipment as varied as the television, radio, 2-way radios, WLAN equipment etc. This talk covers PIN diode characteristics and RF applications such as... more
Conceivably, very few simulations of the Foster-Seeley (F-S) demodulator have ever been performed because by the time PC-based circuit simulators appeared in the 90s, the F-S has already faded from use and from engineering consciousness.... more
This Impact Report identifies and summarises the diverse impacts, resulting from the £500m of UK funding of Science and Technology in 2013, using numerous quantitative metrics and short case study extracts. It shows how the varied... more