Active Antennas

Active Integrated Antennas

This paper provide a review of the active integrated antenna (AIA) technologies. After a brief introduction on the definition and some historical remarks, the paper concentrates on the research effort on the past decades or so. The AIAs are reviewed in its various functions. First, an oscillator-type AIA is presented, followed by very interesting aspects of coupled oscillator arrays for phase c...

Active Loops, Active Voltage Probe and Wire Antennas; A Statistical Review of the Performance of Six Antennas (Part I)

For the last 18 months the author has been involved with Pixel Technologies in developing and producing the high-gain low-noise preamp used with the company’s series of shielded magnetic loop antennas. Recently Pixel asked me to perform a series of comparative tests on the latest version of their loop antenna (Model RF PRO-1B) to determine how it performs relative to other loop antennas and oth...

Integrated optical antennas, and their impact on active optoelectronic devices

Please note that technical editing may introduce minor changes to the text and/or graphics, which may alter content. The journal’s standard Terms & Conditions and the Ethical guidelines still apply. In no event shall the Royal Society of Chemistry be held responsible for any errors or omissions in this Accepted Manuscript or any consequences arising from the use of any information it contains. ...

Active Antennas: The Next Step in Radio and Antenna Evolution

Active control over nanofocusing with nanorod plasmonic antennas.

Active control over light nanofocusing in a nanorod plasmonic antenna coupled to a photonic crystal cavity is proposed and demonstrated by means of full-vectorial 3D simulations. By varying the excitation of the cavity with laser beam spot size allows us to achieve a gradual control over light nanofocusing at the tip of the nanoantenna. The demonstrated control mechanism eliminates the need for...