Antenna projects

  

Typically an antenna consists of an arrangement of metallic conductors (or "elements") with an electrical connection (often through a transmission line) to the receiver or transmitter. A current forced through such a conductor by a radio transmitter will create an alternating magnetic field according to Ampère's law.

Or the alternating magnetic field due to a distant radio transmitter will induce a voltage at the antenna terminals, according to Faraday's law, which is connected to the input of a receiver.  But it is only through antennas that those radio frequency electrical signals are converted to (and from) propagating radio waves.
 
Depending on the design of the antenna, radio waves can be sent toward and received from all directions ("omnidirectional"), whereas a directional or beam antenna is designed to operate in a particular direction. In the so-called far field, at a considerable distance away from the antenna, the oscillating magnetic field is coupled with a similarly oscillating electric field; together these define an electromagnetic wave which is capable of propagating great distances.
 
 Light is one example of electromagnetic radiation, along with infrared and x-rays, while radio waves differ only in their much lower frequency (and much longer wavelength). Electronic circuits can operate at these lower frequencies, processing radio signals conducted through wires.
 

 

 

News

Cut The Cord: 100 Channels + $15 Antenna

WWLTV.com Cut The Cord: 100 Channels + $15 Antenna WWLTV.com Cut The Cord: 100 Channels + $15 Antenna . Matt Granite , WKYC 4:44 AM. CST February 27, 2017. CONNECT TWEET LINKEDIN GOOGLE+ PINTEREST. CLEVELAND, OH - I...

Feb 27, 2017

Ethertronics Launches First Complete LoRa Module with Active Steering(TM) Antenna for Ultra-Long Range ...

Ethertronics Launches First Complete LoRa Module with Active Steering(TM) Antenna for Ultra-Long Range ... Yahoo Finance Ethertronics, the leader in ultra-high performance smart antenna system solutions, announced today...

Feb 27, 2017

Loop Antenna is Portable

Hackaday Loop Antenna is Portable Hackaday We don't know if [OH8STN] has a military background, but we suspect he might since his recent post is about a “DIY Man Portable Magnetic Loop Antenna .” “Man-portable”...

Feb 26, 2017

The best indoor HDTV antenna you can buy

Digital Trends The best indoor HDTV antenna you can buy Digital Trends If you've decided to ditch cable or satellite service in order to save upwards of $1,500 per year, then you should consider investing in a...

Feb 22, 2017

Smart Antenna Technologies announces £1m investment to build the world's first multi-functioning antenna

TechSPARK (blog) Smart Antenna Technologies announces £1m investment to build the world's first multi-functioning antenna TechSPARK (blog) Antenna technology is constantly improving to match our mobile...

Feb 27, 2017

North Stamford's antenna up over New Canaan's radio tower ...

The Advocate North Stamford's antenna up over New Canaan's radio tower ... The Advocate STAMFORD — City residents want New Canaan officials to explain why the town's suggested location for an emergency...

Feb 25, 2017

Bill Gates-backed Kymeta reaches milestone for connected car ...

GeekWire Bill Gates-backed Kymeta reaches milestone for connected car ... GeekWire Kymeta continues to make progress with its satellite antenna internet technology for connected vehicles. The Redmond, Wash.-based...

Feb 22, 2017

How to set up an over-the-air antenna for optimal viewing

Dallas News How to set up an over-the-air antenna for optimal viewing Dallas News I choose Antenna . Under the Setup menu, I scroll down to Program Channel and there is an Auto Scan option. Choosing Auto Scan will...

Feb 3, 2017

MTI Wireless Edge Develops Innovative Multi-Band Antenna Systems For 5G Networks, In Collaboration With Nokia

MTI Wireless Edge Develops Innovative Multi-Band Antenna Systems For 5G Networks, In Collaboration With Nokia RF Globalnet (press release) MTI Wireless Edge is developing, in partnership with Nokia, a set of innovative,...

Feb 27, 2017

Chu's Limit—a limit no more

Phys.Org Chu's Limit—a limit no more Phys.Org Chu's Limit, a fundamental principle of electromagnetics, dictates that the bandwidth an antenna can function in has a maximum level proportional to the physical...

Feb 23, 2017

Units & Modules