Directing the fluorescence from nanoscale emitters such as single molecules and single quantum dots is a key factor in a wide range of applications, from the efficient detection of molecules for ...

Yagi antenna can be used at transmission or reception but are more used for transmitters. This antenna is a directional system consisting of an array of a dipole and a reflector and one or more ...

I've constructed hundreds of antennae in the past. Bowtie dipole arrays, biquads, parabolic reflector dipoles, straight up yagi, logarithmic yagi, log periodic, heliacal and simple 1/4 whips. So when ...

A new optical antenna could improve the efficiency of devices that handle just a few photons at a time, such as quantum computers and quantum cryptography circuits. The antenna, which receives and ...

Active Elements: 32 Element Diameter: 5/16-inch Beamwidth, 16• +/- 1dB Gain: 12-14 dBi Maximum Height: 14 inches Maximum Width: 5 inches Maximum Length: 51 inches Polarization: Vertical or horizontal ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Prior to the digital television evolution, directional antennas at full-power television stations ...

When we take a new Wi-Fi router from its box, the stock antenna is a short plastic stub with a reverse SMA plug on one end. More recent and more fancy routers have more than one such antenna for ...