Broadband Log-Periodic Antennas (LO)

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DIRECTIONAL BROADBAND LPDA ANTENNAS

Broadband Log-Periodic Antennas (LO)

The Broadband Log-Periodic Antenna (LO) (also known as LPDA / Log-Periodic Dipole Array) is a wideband directional antenna engineered to deliver combined high gain and constant directivity over an ultra-wide frequency spectrum reaching up to 7 GHz.

While both LPDA and Yagi antennas provide high directional gain, the primary advantage of the LPDA is its ability to support multi-octave continuous bandwidths. Operating with a typical VSWR of 2:1 and consistent radiation characteristics across its range, the LPDA is ideal for EMC/EMI pre-compliance testing, radiated immunity measurements, and wideband spectrum monitoring.

*Custom frequency tuning, phase-matched sets, and ruggedized weatherproof radome options are available upon request.

Broadband Log-Periodic Antennas (LO) Photo

⚡ Next-Gen Engineering Highlights

Wideband Directional Gain

Delivers continuous broadband gain and tight beam directionality over multi-octave frequency spans up to 7 GHz.

Stable VSWR Performance

Maintains a typical VSWR of 2:1 with uniform impedance matching across the entire operating bandwidth.

Precision Dipole Array

Mathematically scaled dipole elements eliminate band gaps and ensure stable radiation pattern symmetry.

EMC Standard Compliance

Engineered to meet stringent commercial and defense EMC/EMI pre-compliance and immunity testing standards.

Key Operational Applications:

EMC / EMI Pre-compliance Testing Radiated Immunity Measurements Wideband Signal Monitoring High Gain Directional Transmission Spectrum Surveillance & Sensing Anechoic Chamber Range Testing

Key Technical Parameter	Specification Overview
Frequency Coverage	Up to 7 GHz (Continuous Wideband Spectrum)
Voltage Standing Wave Ratio (VSWR)	2 : 1 Typical Across Operating Bandwidth
Antenna Architecture	Directional Log-Periodic Dipole Array (LPDA)
Compliance & Standards	EMC / EMI Standard Compliant for Immunity & Emissions
Polarization & Impedance	Linear Polarization / 50 Ω Nominal Interface

Up to 7 GHz Wideband Range VSWR 2:1 (Typical) EMC Standard Compliant

🛠️ Customization & Engineering Services

We provide custom designs and tailored dipole array production to suit your specific testing requirements:

Custom Frequency Tuning: Extended low-frequency elements or tuning up to 7 GHz+.
Calibration Reports: Individual Gain & Radiation Pattern Traceable Calibration.
Weatherproof Coatings: Anti-corrosion coatings for outdoor field monitoring.
Chamber Mounting Brackets: Custom low-reflection mounting fixtures and adapters.

Direct Technical Support: info-tw@ft168.com.tw