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Directional Antennas
Transmit a focused narrow width radio wave.
See Also: Antennas, Broadband Antennas, Log Periodic Antennas, HF Antennas, Biconical Antennas, Horn Antennas, Isotropic Antennas, Loop Antennas, Antenna Software, Antenna Analyzers, Dipole Antennas
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Noise Location Package
Type HFDF
National RF’s Type HFDF high frequency location system is a proven noise hunting and location directional antenna system that allows you, in many cases, to walk right up to the source of High Frequency (HF) noise! Used by several power companies around the United States, professional noise hunters, and other communications specialists, the HFDF has located noise sources that emanated from pole power transformers, arcing electric fences, CATV in-line amplifiers, plasma TV screens, and even Marijuana grower’s heating lamps! The system incorporates several plug-in, tunable magnetic loop sensors of a proprietary National RF design, that cover the frequency range between 1.8 MHz and 55 MHz. The unit is packaged in a hand-held, lightweight metallic enclosure, with a pistol grip and a magnetic compass mounted on top. The compass is used to get magnetic bearings to the noise source, which may be plotted on a map to triangulate, and ultimately pin-point, the location of the noise source. In certain cases, our customers tell us that they have been able to walk right up to the interfering noise source and correct the situation on the spot!
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Fixed Directional HF Antennas
Kratos Defense & Security Solutions, Inc.
These antennas are intended for fixed station applications and are based on the single mast, transportable 747CD Log-Periodic Antenna Series. The variable take-off angle array configuration results in a high-performance antenna well suited to applications where communications over varying distance is required.
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Measurement
Site VSWR
The Site VSWR measurement is done according to CISPR 16-1-4 in the frequency range from 1 GHz to 18 GHz using broadband omni directional antennas in horizontal and vertical polarisation. The volumetric test method is applied (test volume needs to be specified), test distance 3 m - any other distance upon request. The ground plane has to be covered with absorbing material.
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Portable Monitoring Receiver
PR200
The R&S®PR200 portable monitoring receiver is engineered to effectively support spectrum monitoring, interference hunting, spectrum clearance and site testing. It reliably detects, analyzes and locates signals from 8 kHz to 8 GHz and can be extended up to 20 GHz with the R&S®HE400DC handheld directional antenna and up to 33 GHz with the R&S®HE800-DC30 handheld directional antenna both with an integrated downconverter. Optimized for field operations, the R&S®PR200 provides a perfect balance between RF performance, speed and operability, while offering a range of measurement functions suitable for complex 5G signals.
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Direction Finding Antenna Positioners
D-1509
CAES is a leading designer and manufacturer of custom direction finding antenna positioners for military airborne, ground, and naval applications.
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Rotatable Directional HF Antennas
Kratos Defense & Security Solutions, Inc.
Kratos’ horizontally polarized rotatable log-periodic antennas are constructed with wire radiators supported by a strong and unusually lightweight support structure.
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VECTOR-GUN HANDHELD DIRECTION FINDING ANTENNA SYSTEM
HFDF
National RF's Type HFDF active directional antenna system consists of a high gain RF amplifier coupled to a tunable Faraday shielded loop antenna. Several loop antenna assemblies are available to provide coverage of frequencies in the HF and low VHF spectrum. Due to the nature of a Faraday shielded loop, the antenna exhibits a sharp null through the diametric center of the loop. This null is used to determine the direction of incoming radio signals or to locate electrical noise being radiated from some source. The internal high gain amplifier is used to compensate for the inherent inefficiency of the actual loop at the operating frequency. Overall, the system dynamic response is about +6 dB as compared to the dynamic response of a dipole. To aid in the direction finding process on strong signals, an internal 30 DB attenuator is provided. As the loop antenna presents a bi-directional response, tri-angulation may be required to eliminate the ambiguous signal direction. The line of site of the incoming signal is determined by listening for a signal null on the receiver or by watching the receiver’s S-meter.
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VHF Radio Direction Finding Antennas
Vector-Finder Series
The Vector-Finder Series of VHF direction finding antennas provide a compact, lightweight, active antenna, suitable for use in the field with handheld transceivers and scanning radios. The mechanical design allows the sense antennas to be folded back to provide a compact unit, easily stowed or transported in any vehicle. The system interfaces with any FM receiver or transceiver via the antenna jack and the earphone jack. Several different models are available to suit your pocketbook or unique field application, all of which operate on the phase shift technique. The VF-142Q models incorporate left-right indicators as well as an audible response from which the user can determine the true direction of the radio signal. The other types utilize the audible response generated by the equipment and heard on the user’s receiver or transceiver. All models operate from a 9-volt battery.
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GPON ONT
ONT-1FE-1GE-RF-W
Hangzhou Softel Optic Co., Ltd.
ONT-1FE-1GE-RF-W is fiber to the home multi service access XPON ONT. It’s based on the mature, stable, high cost performance EPON/GPON technology and has gigabit Ethernet switching, WDM and HFC technology. ONT-1FE-1GE-RF-W has a higher bandwidth, higher reliability, easy management and good quality of service (QoS) guarantee. It supports GPON and EPON two modes adaptive, can quickly and effectively distinguish between GPON and EPON systems, so normal operation under the current system. It adopts single fiber WDM technology with downlink wavelength 1550nm and 1490nm, uplink wavelength 1310nm . It only needs one-core fiber to transmit data and CATV service. ONT-1FE-1GE-RF-W can integration wireless function with meet 802.11 n/b/g technical standards, It has external high gain directional antenna, the wireless transmission rate up to 300Mbps. It has the characteristics of strong penetrating power and wide coverage. It can provide users with more efficient data transmission security.
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Law Enforcement/Public Safety
Vehicular and Handheld antennas are available for communication, surveillance, signal DF, network repeaters and RF Jamming applications. A single omni or high gain directional ARA antenna may cover all cellular and/or Tetra communication bands and are compatible with all network technologies (GSM, CDMA, etc.). These wideband antennas replace the need for several single band antennas and are ideal for vehicular installations as well as handheld radio mounted applications. Permanent installations, quick deploy magnetic mounts or convenient pistol grips for radio location are available.
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WLAN Directional Antenna
The COMM-connect WLAN Directional LPDA Antenna offers superior performance in applications requiring directivity. The antenna comes fully equipped with cable & SMA male connector, which makes it very easy to install in any type of installation. Our Antenna is housed in a very rugged radome, orginally designed for Maritime applications.
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Logarithmic Periodic Broadband Antennas
Directional, active broadband antennas that are the ideal solution for interference tracking, site surveying, and most general RF and EMC analysis applications, due to their unique dipole elements positioned along the antenna axis in a triangular shape.
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DVB-T Omnidirectional Antenna
The COMM-connect DVB-T Omnidirectional Antenna offers superior performance in applications requiring bandwidth in all directions. The antenna comes fully equipped with stainless steel mast brackets & 7/16 female connector, which makes it very easy to install in any type of installation. Our Antenna is housed in a very rugged radome, able to withstand very harsh weather conditions.
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VHF/UHF Handheld Signal Location Antennas
Type NVF-2
The Type NVF-2 series of handheld directional antennas are used to locate interfering signals or noise in either the 420 – 470 MHz (Type NVF-2A) or the 900 MHz ISM band or cellular telephone bands (Type NVF-2B). Both models incorporate a solid reflector positioned behind a resonated half wave driven element, both elements being mounted on a fiberglass rod with an integral pistol grip. The configuration of the reflector and driven element are such that a deep null in the signal being received will occur when the antenna is pointed in the direction of the signal being radiated. A T-pad resistive attenuator is also incorporated in the antenna mounting enclosure to aid in the direction finding process on very strong signals or when excessive reflections present multiple returns.
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Direction Finding
ARA has RF receive solutions for mobile, man portable and fixed site applications for electronic warfare and ISR missions. Our systems include receive only omni RF systems, RF intercept solutions, broadband omni antennas, directional antennas for tactical deployments, and multioctave band horn antennas.
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Lens Antennas
A lens antenna is a directional antenna that uses a shaped piece of microwave-transparent material to bend and focus microwaves by refraction, as an optical lens does for light.[1] Typically it consists of a small feed antenna such as a patch antenna or horn antenna which radiates radio waves, with a piece of dielectric or composite material in front which functions as a converging lens to collimate the radio waves into a beam.[2] Conversely, in a receiving antenna the lens focuses the incoming radio waves onto the feed antenna, which converts them to electric currents which are delivered to a radio receiver. They can also be fed by an array of feed antennas, called a focal plane array (FPA), to create more complicated radiation patterns.
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Sector Antennas
A sector antenna is a type of directional microwave antenna with a sector-shaped radiation pattern. The word "sector" is used in the geometric sense; some portion of the circumference of a circle measured in degrees of arc. 60°, 90° and 120° designs are typical, often with a few degrees 'extra' to ensure overlap and mounted in multiples when wider or full-circle coverage is required (see photos below). The largest use of these antennas is as antennas for cell phone base-station sites. They are also used for other types of mobile communications, for example in Wi-Fi networks. They are used for limited-range distances of around 4 to 5 km.
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Attenuators
The National RF line of attenuators are compact, affordable attenuators which are ideal for insertion between a direction finding antenna and a receiver/transceiver, to aid in the DF process. In addition, they may be used in the laboratory for a low-power, in-line attenuation purposes. The affordable price is achieved by utilizing standard 5% tolerance resistors and commercial hardware. For laboratory purposes, an attenuation versus frequency curve (to 500mMHz) is provided.
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Antenna Kit
EM-6000 | 10 KHz – 18 GHz
Electro-Metrics antenna kit consists of OmniDirectional and Directional antennas covering the frequency range of 10 kHz to 18 GHz. Accessories are included for use with the antennas. All antennas and accessories are placed in two carrying cases, which are provided.
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Antenna, Ultra-Wideband, Directional
EM-6945 | 500 MHz – 25 GHz
The EM-6945 Vector Log Periodic antenna covers the broadest frequency range available in such a small, rugged, deployable package. Offering the uncompromising performance you’ve come to expect from Electro-Metrics, a state-of-the-art design provides the antenna characteristics you need, unmatched by others in the community.
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Antennas
Dual polarized 6 dBi omni-directional antenna. Included with each antenna is a unique mounting bracket that allows the Ubiquiti® RocketM2 radio to be attached directly to the antenna. Also included are a pair of 195-series low-loss cable assemblies to connect the RocketM2 to the antenna. Customers can enjoy the cost saving of these kits compared to purchasing an Ubiquiti® antenna to use with the RocketM2 radio.
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Antennas
Aaronia AG specializes in the development and construction of quality antennas of all types. With the antennas developed and manufactured in Germany, almost all measurement scenarios can thus be served. This includes, for example, measurements in the field, EMC measurements in the laboratory, but also very special and unique solutions such as IsoLOG® 3D tracking antennas, which are also used for the AARTOS drone detection system developed by Aaronia. Here, Aaronia AG guarantees the highest quality at reasonable conditions.
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Antennas
Below are a selection of compatible antennas available for the NAV6 Series of NAVTEX products as well additional accessories for mounting and a fitting to your boat. Please browse the tiles below to find out more.
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Directional Couplers
Directional Couplers designed by BroadWave provide an accurate method for sampling microwave energy. Available in single and dual configurations. We can offer couplers for most applications including power measurements, signal leveling, and frequency measurements.
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Antenna
RF Lambda’s standard horn antennas come in a variety of frequency ranges. Various beam widths and gain can be used to configure any system. Radomes and waterproof connector options available upon request.
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Antenna Products
NSI-MI Technologies has an extensive history in the development of innovative antennas for precision antenna test and measurement applications, as well as other wireless applications. NSI-MI antennas are designed, developed and manufactured in our factory by our talented staff of antenna design engineers with decades of experience. Our antenna products and services fulfill the needs of numerous markets, including the military and defense, aerospace, automotive, satellite communications, and wireless industries.
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Horn Antenna
TDK HRN-0118
The TDK HRN-0118 broadband horn antenna (1 GHz to 18 GHz) is designed specifically for radiated emissions and immunity measurements in EMC test environments. The HRN-0118 horn antenna provides optimal performance over the frequency range of 1 GHz to 18 GHz.
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Antenna, Loop
EM-6874 | 20 Hz – 30 MHz
The EM-6874 Loop antenna is nominally used 20 Hz to 30 MHz and is designed for uncalibrated substitution measurements of shielding effectiveness as described by MILSTD-285, IEEE STD 299, and NSA-65-6.
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Antenna Masts
Antenna Masts are an integral part of EMC and RF measurement systems. Innco system masts are renowned worldwide as the standard benchmark. Available in manual or automatic, using either pneumatic and or electric driven, the antenna mast design has the capacity to carry antennas of 6kg (MM) and 10kgs (MA) as standard. Higher loads are available upon request.
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Antenna Adapter
Antenna adapters for all standard antennas are available. Nonstandard are also available upon request. The adapter materials are designed to provide stability, with the lowest possible weight.
