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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.
The ZA-048 is a printed LDPA (Log-Periodic Dipole Array Antenna). Optimized design techniques significantly reduce its size, making it compatible with the tinySA ULTRA spectrum analyzer. Using new technology, it covers 400MHz-8GHz in a 27x23cm size, with...
The antenna's input resistance is rated at 50Ω, and return loss fluctuates when the antenna is connected to a 50Ω source. In most frequency bands above 1GHz, the return loss is about 10dB or less, and the VSWR is about 2. In the 400M-1GHz band, the...
ZA048 log-periodic dipole array antenna can be used for radio direction finding under the frequency between 1GHz-8.5GHz without strict requirements. It exerts a decent sensitivity of direction of the signal source when being held single-handedly and...
Due to antenna area constraints, some low - frequency directionality was sacrificed. Please refer to the gain and front-back comparison charts below
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...
Stable Tripod Bracket: This LPDA antenna features a tripod support structure. The included adjustable clamp is compatible with 2.8 Inch TinySA and 4 Inch TinySA Ultra+ ZS405/ZS406/ZS407 models. Once installed, it creates a professional setup for RF signal...
Portable and Compact Design: This wideband LPDA antenna is compact and easy to carry, making it ideal for outdoor mobile testing. If you need a broadband antenna that is highly compatible with your TinySA and convenient for on-the-go use, this is a great...
Multiple Band Supported: The log periodic can cover a wide bandwidth of 0.1‑12GHz, making it adaptable to the measurement needs of different frequency bands, as well as reducing the number of components and complexity in the system, lowering the cost of...
Passive Design: This log periodic outdoor adopts passive design, does not need external power supply, easy to install and use. Adopting handheld design, this is small and convenient for users to carry and use.
Multifunctional: This directional is multifunctional, it can realize the measurement of directionality and angle information, it can be used to determine the direction of the source of the , with strong directionality, it can focus on receiving and...
High Gain: This log periodic directional has high gain, which can enhance the reception sensitivity and power of the , improve the communication quality, which is very practical.
Wide Application: This direction finding has a wide range of applications in the field of communicating, , radio reconnaissance, etc. It is especially suitable for the scenarios that need to measure the direction of in multiple frequency bands in a wide...
Multiple Band Supported: The log periodic can cover a wide bandwidth of 0.1‑12GHz, making it adaptable to the measurement needs of different frequency bands, as well as reducing the number of components and complexity in the system, lowering the cost of...
Passive Design: This log periodic outdoor adopts passive design, does not need external power supply, easy to install and use. Adopting handheld design, this is small and convenient for users to carry and use.
Multifunctional: This directional is multifunctional, it can realize the measurement of directionality and angle information, it can be used to determine the direction of the source of the , with strong directionality, it can focus on receiving and...
High Gain: This log periodic directional has high gain, which can enhance the reception sensitivity and power of the , improve the communication quality, which is very practical.
Wide Application: This direction finding has a wide range of applications in the field of communicating, , radio reconnaissance, etc. It is especially suitable for the scenarios that need to measure the direction of in multiple frequency bands in a wide...
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...
Multiple Band Supported: The log periodic can cover a wide bandwidth of 0.1‑12GHz, making it adaptable to the measurement needs of different frequency bands, as well as reducing the number of components and complexity in the system, lowering the cost of...
Passive Design: This log periodic outdoor adopts passive design, does not need external power supply, easy to install and use. Adopting handheld design, this is small and convenient for users to carry and use.
Multifunctional: This directional is multifunctional, it can realize the measurement of directionality and angle information, it can be used to determine the direction of the source of the , with strong directionality, it can focus on receiving and...
High Gain: This log periodic directional has high gain, which can enhance the reception sensitivity and power of the , improve the communication quality, which is very practical.
Wide Application: This direction finding has a wide range of applications in the field of communicating, , radio reconnaissance, etc. It is especially suitable for the scenarios that need to measure the direction of in multiple frequency bands in a wide...
Passive Design: This log periodic outdoor antenna adopts passive design, does not need external power supply, easy to install and use. Adopting handheld design, this antenna is small and convenient for users to carry and use.
Multiple Band Supported: The log periodic antenna can cover a wide bandwidth of 0.1‑12GHz, making it adaptable to the signal measurement needs of different frequency bands, as well as reducing the number of components and complexity in the system...
Multifunctional: This directional antenna is multifunctional, it can realize the measurement of signal directionality and angle information, it can be used to determine the direction of the source of the signal, with strong directionality, it can on...
High Gain: This log periodic directional antenna has high gain, which can enhance the reception sensitivity and transmission power of the signal, improve the communication quality, which is very practical.
Wide Application: This direction finding antenna has a wide range of applications in the field of communicating, , radio reconnaissance, etc. It is especially suitable for the scenarios that need to measure the direction of signals in multiple frequency...
Last update on 2026-07-18 / 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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