Weighing up antenna options for 915 MHz? Here are some considerations..

If you are designing or developing wireless applications using the 915 MHz ISM band, choosing the correct antenna for your application can be critical is ensuring your RF perforamnce is optimal. I thought it might be interesting for people working on 915 MHz (or the 900 MHz band more generally) projects, if I listed out a number of diverse external antenna products to aid the developer's understanding of available solutions on the market.

1/4 Wave Whip Antenna

A terminal-mount short 1/4 wave moulded whip antenna (requires a groundplane to mount on) with RP-SMA or SMA connectors typically (TNC, BNC are also possible). Suitable for fixed and portable terminals.

915 MHz Whip Antenna RP-SMA

 1/4 Wave Whip Antenna with Flying Lead

Similar to the antenna above, this 915 MHz 1/4 Wave whip antenna has stud at the bottom for permanent mounting and a RG174 flying lead to connect the antenna to terminal. This antenna can be used for both fixed and portable applications.

915 Mhz Whip with Flying Lead

Stub Antenna

A 1/4 wave helical stubby antenna with a sheath length of approximately 55mm. This is again suitable for fixed and portable applications. The connector at the bottom can be SMA or RP-SMA and either straight or right angle. This antenna should be mounted onto a groundplane.

915 MHz Stubby Antenna

Swivel Dipole Antenna

A 1/2 wave dipole antenna for 915 MHz with either SMA or RP-SMA. The antenna can lock in vertical or horiztonal positions or at 45 degrees if required.  This antenna is groundplane indepenent so can be mounted onto non-metal (i.e. ABC, PC etc.) terminals.

915 MHz Swivel Dipole

Waterproof Compact Omni Antenna

For outdoor applications, a compact waterproof 915 MHz omni antenna might be the solution. Where a robust, weatherpoof dipole-like antenna is required, this antenna is discrete yet durable and flexible to accomodate a range of applications.

915 MHz Waterproof Compact Omni Antennas

Available with a variety of connectors including SMA, RP-SMA, N-Type, TNC,  RP-TNC with straight and some right angle versions, these antennas a Flame retardent, UV-resistant sheath and there are versions at 915 MHz for mounting onto metal or non-metal surfaces. A through hole (stud mount) version is also available based on a N-Female Panel mount connector (with O-Ring for a watertight seal plus washer and nut for locking in place onto the enclosure.

Outdoor Wall-Mount Omni Antenna

For small, wall-mounted antennas, then the wall-mounted version of the above compact omni might be well worth taking a look at. This antenna is supplied with the flame retardent and UV-resistant sheath terminated in N-Female connector and mounted on a stainless steel bracket. Jumper cables can be specified to order depending on the grade of cable required for the length of cable run required - the jumper cable requires a N-Male Plug to connect to the antenna.

915 MHz Compact Wall-Mount Omni
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Directional Panel Antenna

A 10 dBi directional 915 MHz panel antenna for wall-mount and pole mount applications. Terminated in either a low loss cable or simply a N-Female connector, this antenna measures approximately 200x200x40mm and is housed in a weatherproof LURAN enclosure.

915 MHz Directional High Gain Panel Antenna
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These are standard off-the-shelf 915 MHz products. This listing is not exhaustive, but is designed to give you some food for thought. For further information and for other 915 MHz antenna requirements, please contact us at sales@ead-ltd.com.