Dipoles
1) electric dipole - is the separation of a negative charge from a positive. 2) magnetic dipole - the closed circuit of an electric current system.
See Also: Dipole Antennas, Dipole Reference Antennas, Precision Dipole Antennas
-
Product
Dipoles
-
Tuned half-wave dipoles have been among the most important antennas from the beginning of rf-technique. The characteristics of half-wave dipoles have been calculable very early using the Maxwell and Hertz equations. Therefore the half wave dipole became a reference antenna.
-
Product
Dipole Antenna
AD-100
-
The Tuned Dipole Antenna model AD-100 is a reference antenna set specified in many EMC standards. It is used in the frequency range of 30 MHz to 1 GHz. This set consists of four baluns and was designed according to American National Standard C63.4. This reference antenna set is used for EMC test site calibrations and for calibrating other antennas, because it is considered a standard antenna according to ANSI C63.5 standard.
-
-
Product
Array Solutions OCF
Series Dipoles
-
Thank you and congratulations on your purchase of the Array Solutions, OffCenter Fed HF Dipole Antenna System. This antenna was built with the same quality workmanship and attention to detail as our military, government and commercial wire antenna products. It is ideal for ARES/RACES, MARS/CAP, USCG Aux., Red Cross, Salvation Army and other disaster and relief organization use. It is built especially for high duty cycle, harsh environmental applications. The use of the finest quality components available and our “overbuilt” quality construction means your new antenna will last for years under the most difficult conditions, while requiring little or no maintenance.
-
Product
Dipole Antennas
-
Provides reliable, repeatable measurements. Suitable of FCC, MIL-STD, VDE, Tempest and Immunity stesting.
-
Product
Biconic Logarithmic Periodic Antennas
Stacked LPDA
-
The stacked Logarithmic Periodic Dipole Antenna consists of two ordinary Log.-Per. structures. The excellent characteristics (flat gain over a large bandwidth, low SWR) of the ordinary Log.-Per. designs could be maintained using the stacked LP design. The stacked design helps to focus the directional pattern of the H-plane somewhat, resulting in a typical gain improvement of ca. 2-3 dB compared to an ordinary LPDA. This is especially important for immunity testing, where a maximum fieldstrength and a good field uniformity is required. The beamwidth in the E-plane and the H-plane are nearly identical, providing an optimised illumination of the EuT with minimised ground reflection influence. Further the STLP 9128 C has an excellent cross-polar rejection.
-
Product
Biconical Antennas
-
Biconical Antennas have dipole like characteristics (e.g. circular directional pattern in the H-plane,"8"-shaped in the E-plane, fixed phase center, comparable gain), with an enormous wide bandwidth achieved by the double cone elements.
-
Product
Log Periodic Dipole Array
ALP500
-
Standard remote antenna ideal for fixed applications. The ALP Series antennas are a Log Periodic Dipole Array (LPDA) design that provides a useful directional pattern over a broad frequency bandwidth.
-
Product
Electrical Tomography Software
Res2dinv
-
This very popular software, developped by M.H.Loke, uses the method involving the Sasaki minimum squares inversion (1992) to produce a 2D sub-soil model starting from the data of apparent resistivity (up to 2000 electrodes). It is completely automatic and does not require that the user formulates a starting model. When using a state-of-art computer, the inversion of a single pseudosection will require only a few minutes.RES2DINV supports spreading types like Wenner, Schlumberger, Pole-Pole, Pole-Dipole, line Dipole, equatorial Dipole and other non-conventional spreading types.
-
Product
Log Periodic Antennas
-
TDK Log Periodic Antennas - v-log array, log periodic dipole antenna, precision log periodic antenna, etc
-
Product
Log Periodic Dipole Array
ALP650
-
Skeletal design remote antenna with onboard amplifier ideal for long cable runs, phantom powered from Venue, UMC16 or Bias T. The ALP Series antennas are a Log Periodic Dipole Array (LPDA) design that provides a useful directional pattern over a broad frequency bandwidth.
-
Product
Public Safety Antennas
-
Antenna, IoT / LoRaWAN / Wi-Fi, RP-SMA Male, External, Dipole / Stubby
-
Product
Field Strength Meter
FIM-71 VHF
-
The Model FIM-71 is a portable, laboratory quality Field Strength Meter designed for rigorous field applications. Combining a calibrated half-wave dipole antenna and a highly accurate tuned voltmeter with a range of 140 dB, the FIM-71 is suitable for practically all types of RF emission measurements in the 45 MHz to 225 MHz spectrum. The operator can switch select wide or narrow bandwidth, peak or average value of TV or pulse modulated signals, AM or FM demodulation, and a meter dynamic range of either 20 dB or 60 dB. A dc analog output voltage, proportional to the meter indication, is provided for driving a chart recorder. A leveled output from the calibrating oscillator is available for measuring cable insertion loss, filter response, amplifier gain, and other signal ratio measurements. The 4-1/2 inch, taut band, mirrored scale meter is calibrated in volts and dB for precise measurements in field or laboratory environments.
-
Product
Biconical Antennas
-
For many years most standards called for the use of a half-wave dipole antenna set for frequencies above 80 MHz. However, to reduce test time, broadband antennas such as the biconical antenna and log periodic antennas began to be accepted. Broadband antennas, compared to half wave dipoles, reduce test time because the technician did not have to stop the test to adjust the dipole antenna for each frequency. A.H. Systems'' 7 models of Biconical Antennas operate efficiently over the frequency range of 20 MHz to 18 GHz. Suitable for FCC, MIL-STD, VDE, TEMPEST, and immunity testing, each Biconical antenna will provide reliable, repeatable measurements.
-
Product
Field Strength Meter
FIM-72A UHF
-
The Model FIM-72A is a portable, laboratory quality Field Strength Meter designed for rigorous field applications. Combining a calibrated half-wave dipole antenna and a highly accurate tuned voltmeter with a range of 140 dB, the FIM-72A is suitable for practically all types of RF emission measurements in the 450 MHz to 960 MHz spectrum. The operator can switch select wide or narrow bandwidth, peak or average value of TV or pulse modulated signals, AM or FM demodulation, and meter dynamic range of either 20 dB or 60 dB. A dc analog voltage, proportional to meter indication, is provided for driving a chart recorder or similar device. A leveled output from the calibrating generator is available for measuring cable insertion loss, filter response, amplifier gain, VSWR, and other signal ratio measurements. The 4-1/2 inch, taut band, mirrored scale meter is calibrated in volts and dB for precise measurements in field or laboratory environments.
-
Product
Turned Multiple Dipole Antenna
MODP2080
-
Antenna for Radiation Immunity Test on Car Max. Input Power : 12kW & High Erectric Field at = 4 : 100V/m Contolable the Height/Deviation by own unique Stand Patent Information.
-
Product
Precision Conical Dipole
PCD 8250
-
Exposure evaluation next to mobile communication facilities e.g. GSM and UMTS base stations. Accurate RF radiation safety measurements e.g. nearby broadcast stations or in buildings. All kinds of field strength measurements where high precision, a wide frequency range and small antenna dimensions are required. Measurements according to our Field Nose method. Frequency range: 80 MHz 3 GHz
-
Product
Log Periodic Dipole Array
ALP620
-
Skeletal remote antenna for decreased wind loading. The ALP Series antennas are a Log Periodic Dipole Array (LPDA) design that provides a useful directional pattern over a broad frequency bandwidth.
-
Product
Monitoring & Drive Test Antennas
-
Linear polarized half-wave dipole with 1:1 balun and fixed element length for fieldstrength measurements at TETRA (terrestrical trunked radio) networks.
-
Product
Horn Antennas
-
Broadband antennas, compared to half wave dipoles, reduce test time because the technician did not have to stop the test to adjust the dipole antenna for each frequency. Most compliance standards now require the use of such antennas. The latest version of Mil-Std 461E states the used of broadband double ridge guide horn antenna as the antenna of choice for frequencies above 200 MHz.
-
Product
Precision Conical Dipole
PCD 3100
-
Site validation measurements according to prEN 50147-3 in fully anechoic rooms. Accurate RF radiation safety measurements (e.g. broadcast stations). All purposes of broadband precision field-strength measurements. Frequency range: 30 MHz - 1 GHz
-
Product
Omnidirectional HF Antennas
-
Kratos Defense & Security Solutions, Inc.
Broadband dipole products include the horizontally polarized 1765 antenna for short-to-medium range communications, the 3065 antenna that reduces ground-area requirements, and the 5065 series designed for locations where space is at a premium, including rooftops.
-
Product
Adjustable Dipole Antenna
SNA600a
-
The SNA600 antenna is a versatile tool for use with wireless microphone receivers or IFB transmitters. The center frequency of its 100 MHz bandwidth is tunable from 550 to 800 MHz. The frequency is set by adjusting the dipole elements using the scale printed on the body of the antenna. The elements fold for storage.
-
Product
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.
-
Product
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.
-
Product
Antenna
-
The multifunctional antennas are designed to meet the harsh environmental conditions and limited space availability found on submarines. This is achieved by utilizing a unique stack array enclosed within a protecting fibre glass dome.The antenna characteristics has been developed in such a way so that aircrafts can also operate in the airspace for data and voice communications next to ship-to-ship or ship-to-shore communications. In this way aircrafts e.g. AWACS act as relay stations to transfer radio signals. Although the dipole of the lizard has a primarily plane oriented radiation characteristic – up until an elevation angle of 60 degrees-, submarines can still track aircrafts up to an elevation angle of 90 degree. This guarantees complete coverage of the surrounding airspace in 360 degree horizontal level as well as in 180 degree vertical level.With this outstanding multifunction antenna capability Aeromaritime significantly extends the military communications for submarines by offering this unique capability.
-
Product
Dipole Antennas
A6434
-
CAES manufactures dipole antennas for a variety of terrestrial applications including fixed-site, man-portable, and vehicular.
-
Product
Electromagnetic Conductivity Meter
CMD-DUO
-
CMD-DUO electromagnetic conductivity meter completes our family of advanced digital conductivity meters with the instrument for deep surveys. Easy operated set with variable dipole distance allows multidepth field survey with results suitable both for apparent conductivity and model sections (inversion by IX1D). geological survey, water management (searching for potable water sources, groundwater protection, ground contamination monitoring), raw material prospecting, investigation of underground objects.
-
Product
Reference Antennas
Type NRD
-
Reference antennas are precision dipole antennas that offer a fixed 2.15 dB of gain over an isotropic antenna along the major lobe axis at specified frequencies (2.15 dBi). They are intended to be used for antenna field pattern and gain measurements, or general RF sensing in the laboratory.
-
Product
High-performance LPDA
ALP690
-
The ALP690 is a high-performance LPDA (log periodic dipole array) antenna with a bypassable, built-in RF amplifier for use with wireless microphone receivers in location or studio production. The design delivers +4 dBd of passive gain in a directional pattern to extend operating range, and, when DC power is applied, the amplifier applies gain to overcome loss in long coaxial cable runs. By offering both active and passive operation modes, the ALP690 can be used as a receiver antenna (active or passive) and as a transmitter antenna (passive only).
