Saurav R. Tuladhar

My own musings

Antenna Diary

I’ve been interested in communication technology from my early age. One of the visible element of any communication network system is the antenna unit. They come in all shapes and sizes and I was enthralled by these units that spring up everywhere the network coverage extends. Knowingly or unknowingly even today whenever I’m on travel or commuting my eyes take a note of antenna installations that I see along they way. I’ve created this page to collect photos and discussion on different types of antenna installations that I come across. I’ll try to give a description of the setup to the best of my knowledge, but any corrections are more than welcome

Trio omni-antenna

Three omni-directional antenna setup near Blue hill reservation (Street view)

Cellular base station antenna

It is a common practice in US for cellular service operators to utilize existing infrastructure in the service area to setup their base station antenna. The photo here shows an old mill exhaust chimney being utilized to setup antennas. There are four distinct circular arrangement of the antennas. I suspect each circle belongs to one of four major cellular operators in US.

Cellular base station

Cellular base station antenna units on a factory chimney in Hull, MA (Click for larger photo)

All four operators are currently operating 2G, 3G and 4G LTE services and hence they have multiple antennas for each service. All of 2G and 3G services are in PCS and AWS band and use shorter antennas. Both ATT and Verizon provide most of their LTE service in 700MHz band which requires longer antennas. Each operator has three to four antennas one for each of their service in each sector. This is pretty standard setup in most of the urban base station sites.

There are a couple of microwave repeater antennas and dipole antennas probably used by the police or the emergency services.

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Written by Saurav

July 11, 2014 at 6:15 AM

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