In this paper, we designed and experimentally studied several systems of standard coaxial cables with different impedances which mimic the operation so called photonic structures like coupled crystal microcavities. Using elementary cells half-meter long got resonances around 100MHz, a range frequencies that can be easily teaching laboratory apparatus. Resonant mode frequency splitting has been ...

A novel, tri-band, planar plate-type antenna made of a compact metal plate for wireless local area network (WLAN) applications in the 2.4GHz (2400–2484MHz), 5.2GHz (5150– 5350MHz), and 5.8 GHz (5725–5825 MHz) bands is presented. The antenna was designed in a way that the operating principle includes dipole and loop resonant modes to cover the 2.4/5.2 and 5.8 GHz bands, respectively. The antenna...

A multi band sleeve dipole antenna for jammer application is proposed. The antenna can cover band in which mobile and other wireless devices operate. The design antenna shows very good omnidirectional characteristics and scattering parameter S11 value less than -10db. The dipole is made of two concentric hallow cylinder with different radius and different lengths. The antenna is fed at the cent...

The Institute of Electrical and Electronic Engineers 802.5 (1) standard has become a widely accepted protocol for token ring local area networks (LANs). A major part of its success is the advantages it offers over other network architectures. These advantages include its reliability and simplicity of hardware interfacing the transmission medium to the stations’ electronics. Because each station...

A rf power system has been developed, which allows the use of rf plasma devices in an electric propulsion test facility without excessive noise pollution in thruster diagnostics. Of particular importance are thrust stand measurements, which were previously impossible due to noise. Three major changes were made to the rf power system: first, the cable connection was changed from a balanced trans...

Pulse-width modulation (PWM) is known for simple digital-to-analog conversion and motor current control. But up to now, PWM is not known for high speed communication. This paper shows how to implement the physical layer of a fully digital PWM-based communication system. For performance reasons the PWM senders and receivers are implemented using asynchronous logic. The proposed calibration proce...

We use MAFIA to analyze the PEP-II button-type beam position monitor (BPM). Employing proper termination of the BPM into a coaxial cable, the output signal at the BPM is determined. Thus the issues of signal sensitivity and power output can be addressed quantitatively, including all transient e ects and wake elds. Besides this rst quantitative analysis of a true BPM 3D structure, we nd that int...

Quantum entanglement is not only one of the most puzzling features of quantum mechanics, but it is also a useful resource that can be consumed to realize tasks that would otherwise be impossible. Famous examples are quantum teleportation and quantum cryptography, which are most useful when entanglement is shared between remote parties. Although nearby entangled states can routinely be created u...

The leaky coaxial cable (LCX) based intruder detection system detects intruders by making efficient use of time-variation of the channel impulse response among the cables. Recently, a compressed sensing (CS)-assisted intruder detection system has been proposed for improving the accuracy of the intruder detection. Although the CS-assisted system can improve the false detection probability perfor...

We describe a new apparatus for magnetic confinement of a pure ion plasma, with laser diagnostics to measure test particle transport across the magnetic field. In addition to the axisymmetric trapping potential, rotating electrostatic wall perturbation is used to counteract the plasma loss processes, giving steady-state ion confinement for weeks. Electronic spin polarization of the ion ground s...