Log Periodic Antenna

When a link has to work across many channels, or you do not know in advance which frequency you will need, a broadband antenna saves cost and complexity. Our log periodic antennas give directional gain over a wide bandwidth, from VHF through UHF and into the microwave range, using a single antenna and a single feed.

Choose by bandwidth first. Our broadband range includes models from the 20 MHz wide SLP-88108 for the FM band to the 6.5 GHz wide SLP-6177200 for microwave work.

Why broadband matters

• Fewer antennas on the mast: one log periodic replaces several narrowband antennas, which reduces wind load, mounting hardware and cabling.
• Frequency agility: change channel or band without changing the antenna.
• Directional gain across the band: 7 dBi to 20+ dBi, so range improves instead of dropping as you move off a single tuned frequency.
• Future-proof installations: if your frequency plan changes later, a wideband antenna can often stay in place [verify].

Typical broadband uses

• Multi-channel radio links: a single antenna serving several VHF or UHF channels from one site
• Wireless data and telemetry networks: point-to-point and point-to-multipoint links where the operating frequency may change
• Broadcast reception and link monitoring: receiving across the FM band and neighbouring bands (see SLP-88108)
• Lab and test benches: a wideband directional reference across a large span
• Research and field trials: testing different bands without swapping antennas

Broadband model guide

See the full model table for all 12 models.

Broadband trade-offs to know

A wideband antenna usually has lower peak gain at any one frequency than a narrowband antenna of the same size, such as a Yagi tuned to that frequency. If you need the highest gain at a single frequency, ask us about a Yagi antenna. If you need to cover many frequencies with one directional antenna, a log periodic is the right choice.

Accessories for a complete installation

Pair your antenna with mounting hardware and a gas discharge tube surge arrestor for lightning protection. Splitters and power dividers are also available.

Get a broadband antenna for your band

Send us your frequency range, gain target and mounting details. We can recommend a standard model or build a custom in-band or out-of-band version. Request a quote.

FAQs

How wide is the bandwidth of a log periodic antenna? 

It depends on the model. SLP-88108 covers 20 MHz, while SLP-6177200 covers about 6.5 GHz.

Is a log periodic better than a Yagi? 

For covering many frequencies, yes. For the highest gain at one frequency, a Yagi is usually better.

Can I get an amplified version? 

Yes. The SLPLNA models include a low noise amplifier and are rated 20 dBi or more.