The antenna pattern synthesis is one of the significant problems in phased array antenna. Pattern refers to optimized weight excitation each element order steer beam electronically without mechanically rotating It can be achieved by using a combination phase shifters and attenuator circuits. In this paper, 2 dipole antennas with an RF beamforming circuit has been designed main along azimuth pla...

G. Srinivasan et al. (1990) proposed a simple and elegant explanation for the reduction of the neutron star magnetic dipole moment during binary evolution leading to low mass X-ray binaries and eventually to millisecond pulsars: Quantized vortex lines in the neutron star core superfluid will pin against the quantized flux lines of the proton superconductor. As the neutron star spins down in the...

Optical antennas have been widely used for sensitive photodetection, efficient light emission, high resolution imaging, and biochemical sensing because of their ability to capture and focus light energy beyond the diffraction limit. However, widespread application of optical antennas has been limited due to lack of appropriate methods for uniform and large area fabrication of antennas as well a...

We investigate the collective mode excitation spectrum of an electron gas in a quantum strip that is subjected to a perpendicular magnetic field, with emphasis on the dipole-forbidden transitions. The quantum strip is assumed to be defined in a two-dimensional electron gas by the application of a parabolic confining potential. A classical continuum theory of the collective modes is developed an...

We investigate several aspects of realizing quantum computation using entangled polar molecules in pendular states. Quantum algorithms typically start from a product state |00⋯0⟩ and we show that up to a negligible error, the ground states of polar molecule arrays can be considered as the unentangled qubit basis state |00⋯0⟩ . This state can be prepared by simply allowing the system to reach th...

The polymer/TiO2 array heterojunction interfacial characteristics can be tailored by balanced dipole effects through integration of TiO2-quantum dots (QDs) and N719 at heterojunction interface, resulting in the tunable photovoltaic performance. The changes of V oc with interfacial engineering originate from the shift of the conduction band (E c) edge in the TiO2 nanorod by the interfacial dipol...

It is important to estimate conductivity and permittivity of formation around a borehole. Arrival time and amplitude of the direct wave in single-hole borehole radar is related to the electromagnetic parameters. In this paper, we propose a liner array of dipole antenna elements in a borehole for a receiver. We introduced an optical modulator to transfer the received array signals to optical sig...

The Multiple Signal Classification (MUSIC) algorithm is the most popular to estimate Angle of Arrival (AOA) received signals. analysis this with typical array antenna element ( ) shows that there are two false direction indication in planaligned axis array. In paper a suggested modification on system proposed by using perpendiculars crossed dipole spite one antenna. does not affect AOA estimati...