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Log periodic array (LPA) antennas are essential for achieving wideband reception across various frequencies. Whether for broadcast television, amateur radio, or signal monitoring, selecting the appropriate LPA ensures optimal performance and signal clarity. Understanding key specifications will help you find an antenna that meets your specific needs.
Ultra-Wideband Printed LPA Antenna: The ZA048 is a optimized printed Log-Periodic Dipole Array Antenna (LDPA) for RF testing and signal monitoring. It delivers reliable ultra-wide frequency coverage from 400MHz to 8GHz, suitable for radio testing and...
Stable RF Performance: With a rated 50Ω input impedance matched to standard RF equipment, this antenna delivers consistent performance across bands. In most bands above 1GHz, it achieves return loss of approx. 10dB or less with a VSWR of around 2. In the...
Handheld Radio Direction Finding: It supports general-purpose radio direction finding from 1GHz to 8.5GHz. When held single-handedly, it provides decent directional sensitivity to signal sources — simply rotate your body and the antenna to observe...
Optimized for tinySA ULTRA Spectrum Analyzer: Engineered to pair with the tinySA ULTRA spectrum analyzer, this antenna turns your portable test device into a complete mobile RF measurement and direction finding kit. Its 50Ω impedance matches the...
ZA-048 Log-Periodic Antenna: The ZA-048 is a printed Log-Periodic Dipole Array (LPDA) antenna. Optimized design techniques significantly reduce its size, making it compatible with the TinySA ULTRA+ZS406/ZS407 spectrum analyzer.It can also be used for...
Wide Frequency Range: This antenna is equipped with an ultra-wide operating band of 400 MHz-8 GHz, achieving continuous coverage from low to high frequencies. It supports wide-range spectrum scanning, spatial interference investigation and on-site signal...
Impedance & VSWR Characteristics: The antenna features a nominal input impedance of 50Ω, and its return loss will fluctuate when connected to a 50Ω signal source. In most frequency bands above 1 GHz, the return loss is about 10dB or lower with a...
Direction-Finding Performance: The ZA-048 Log-Periodic Dipole Array Antenna is designed for radio direction finding within the frequency range of 1 GHz to 8.5 GHz, making it suitable for applications that require moderate precision. When the antenna is...
【Wide Frequency Range】This LPDA log-periodic dipole array antenna covers 400MHz-8GHz, making it suitable for wide range RF signal testing, direction finding, spectrum monitoring, testing, general RF analysis applications and other applications.
【Directional Signal Finding】Designed with strong directivity, this broadband antenna helps identify signal direction and angle information, making it useful for locating RF signal sources across multiple frequency bands, detecting RF signal sources.
【Transmit and Receive Capability】The long range directional antenna supports both signal reception and transmission within its operating range, helping improve signal quality, test coverage, and directional RF performance when connected to compatible...
【Stable Tripod Mounting System】Includes a lightweight tripod stand and adjustable clamp for stable positioning during field testing, lab measurement, trace cell signal, or outdoor use. The compact setup allows easy adjustment of antenna angle and...
The Log-Periodic Antenna offers stable wideband coverage across 400MHz-8GHz, with a stan dard 50Ω input impedance
The Log-Periodic Antenna is compatible with the tinySA ULTRA spectrum analyzer, ensures a stable connection and seamless pairing
This Antenna allows for effortless radio direction finding in the 1GHz-8.5GHz. Hold it with one hand, pair it with your spectrum analyzer, and quickly locate signal sources or interference
Parameters: Frequency above 1GHz: Return loss ≤10dB, VSWR ≈2; 400MHz-1GHz: Return loss ≤4.5dB, VSWR ≈4; Frequency below 400MHz: VSWR increases rapidly
FREQUENCY RANGE: Wide bandwidth operation from 0.1-12GHz with reliable performance and high gain, ideal for wireless spectrum management and EMC testing
DUAL POLARIZATION: Features both horizontal and vertical polarization capabilities with directional reception and transmission functionality
HIGH GAIN DESIGN: Provides 7-12dBi directional gain with voltage standing wave ratio ≤2, ensuring excellent signal reception and transmission
COMPACT BUILD: Lightweight at 205g with dimensions of 15.94 x 10.04 inches, featuring an SMA interface and 50Ω output impedance
Whether you are operating portable or permanent, you will find the convenience of a dual-band Log Periodic antenna to be an incredibly convenient and powerful tool in your ham operations.
Having both 2 Meter and 70 cm Bands in a compact, two foot long package, without having to bother with a duplexer is just a real lifesaver to most operating environments.
From bouncing signals off of satellites, to working simplex two or three counties aways – you cannot go wrong with the Elk 2M/440L5!
All Elk 2M/440L5 models come with a handle for handheld operation, making this antenna perfectly set up for satellite, DFing, and very portable operations.
Superior Antenna Coverage: 300 MHz - 1000MHz frequency range ensures versatile usage for UWB TX/RX SDR Radar, GPR, SIGINT, EMC test, ADSB, WiFi, FVP TV, Video IoT, and LoRa applications
High-Performance Design: Log Periodic UWB Passive Antenna delivers exceptional signal strength and clarity, making it an ideal choice for various applications
Sleek and Compact: The black-colored antenna boasts a sleek and compact design, making it easy to install and use in various environments
Universal Compatibility: Compatible with multiple devices and systems, this antenna is a versatile solution for all your antenna needs
Radio communications Signals and communications Intelligence (SIGINT, COMINT, ELINT) IoT bands at EU 863-870, US 902-928, AU 915, AS 923 Broadband Software Defined Radio (SDR) EMC testing Spectrum analysis Direction finding LoRaWAN, Meshtastic, WI-FI...
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Log Periodic Array Antennas
Intended Use Cases
LPAs are highly adaptable. For digital TV reception, they can capture a wide spectrum of broadcast channels. Amateur radio operators use them for multi-band communication, while professionals may employ them for spectrum analysis or signal intelligence. Identify your primary use case to narrow down the models that best suit your requirements.
Frequently Asked Questions
What is the main advantage of a log periodic array antenna?
The primary advantage is its consistent performance across a very wide frequency range. This means it can receive or transmit signals effectively on many different bands without needing to be retuned or replaced.
How does an LPA compare to a Yagi antenna?
Yagi antennas are typically more directional and have higher gain on specific frequencies. LPAs, however, offer a much broader frequency response, making them more versatile for multi-band operations where precise directionality isn't the main concern.
Do I need a special amplifier for an LPA?
While an amplifier can boost signal strength for any antenna, it's not inherently required for an LPA. The need for an amplifier depends more on signal strength in your area and the antenna's inherent gain.
Can I use an LPA indoors?
Yes, some smaller LPAs can be used indoors, but performance may be reduced due to obstructions and signal attenuation. For optimal reception, outdoor mounting is generally recommended.
What does 'front-to-back ratio' mean for an LPA?
The front-to-back ratio measures how well the antenna rejects signals coming from the opposite direction of its intended reception. A higher ratio indicates better rejection of unwanted signals from behind.
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