spiral of Archimedes

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Related to Archimedean spiral: Logarithmic spiral

spiral of Archimedes

n
(Mathematics) maths a spiral having the equation r = aθ, where a is a constant. It is the locus of a point moving to or from the origin at a constant speed along a line rotating around that origin at a constant speed
References in periodicals archive ?
Whereas, by the utilization of hybrid loading and cavity groove technique, we present the design of the smallest form factor with significant performance enhancement in gain by a factor of 3.65 dBi and axial ratio improved by 2.27 dB as compared to a simple Archimedean spiral antenna, in an affordable, easy-to-fabricate design.
In this paper, we propose a method for broadband generation of the OAM carrying beams based on the Archimedean spiral. Theoretical analysis is conducted to explain the work principle of the new OAM generation approach.
The Archimedean spiral array was employed for this simulation.
Based on the variable ratio lever principle by changing the pivot position, a novel compact rotational SVSA with an Archimedean spiral relocation mechanism (ASRM) was developed to obtain compact mechanical structure, large adjustable stiffness range, and better force transmission ability in [15].
Made of a transparent, flexible polymer, the team's device is shaped like an Archimedean spiral. As fluid containing the neural stem cells and progenitor cells flows through the spiral, inertial forces arrange and sort the cells by size.
The Archimedean spiral looks like a coiled rope or the grooves on a vinyl record.
Until now, dipole [11, 14, 15, 37], crossed dipole [12, 38], bowtie [11, 39, 40], log-periodic [11, 41], square-spiral [13, 18], and Archimedean spiral [11, 42] geometries have been proposed for IR and THz antennas.
Reference [1] has demonstrated the feasibility of using the Archimedean spiral antenna to detect the UHF partial discharge signal emitted from power transformers.
" Coaxial feed Archimedean spiral antenna for GPS application." Applied Electromagnetics (APACE), IEEE Asia-Pacific Conference (2010).
Then there's the bit with the symmetrical clockwise Archimedean spiral, which will have people slowly rotating their copies of Inferno, trying not to look silly as they scrutinize the rounded calligraphy on Page 255." JANET MASLIN
Hall, "A coplanar waveguide fed two arm archimedean spiral slot antenna with improved bandwidth," IEEE Transactions on Antennas and Propagation, Vol.
In this paper, a novel coplanar waveguide (CPW)-fed two-arm Archimedean spiral slot band notch antenna using the slotted technique is presented.