Showing product results. 1 - 15 of 90 products found.
-
ERAVANT
In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.[1][2] When graphed in three dimensions (see graph) this radiation pattern is often described as doughnut-shaped. Note that this is different from an isotropic antenna, which radiates equal power in all directions, having a spherical radiation pattern. Omnidirectional antennas oriented vertically are widely used for nondirectional antennas on the surface of the Earth because they radiate equally in all horizontal directions, while the power radiated drops off with elevation angle so little radio energy is aimed into the sky or down toward the earth and wasted. Omnidirectional antennas are widely used for radio broadcasting antennas, and in mobile devices that use radio such as cell phones, FM radios, walkie-talkies, wireless computer networks, cordless phones, GPS, as well as for base stations that communicate with mobile radios, such as police and taxi dispatchers and aircraft communications.
-
ERAVANT
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.
-
ERAVANT
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.
-
ERAVANT
Dual polarized horn antennas are offered as both standard and custom models with rectangular waveguide interfaces for both horizontal and vertical ports. These dual polarized horn antennas support both linear and elliptical polarized waveforms. When the antenna receives a circular polarized waveform, equal amplitude linear polarized waveforms are output at both horizontal and vertical ports. When two equal amplitude linear polarized waveforms are input into the vertical and horizontal ports, the antenna will transmit a circular polarized waveform. The listed models offer 15 dB nominal gain and 33/28 degrees typical half power beamwidth at the center frequency of the band. They also exhibit 40 dB typical port isolation and 35 dB nominal cross polarization. These antennas cover full waveguide bandwidths within the frequency range of 8.2 to 110 GHz. In addition to the models listed below, models with 10, 20, 23 and 25 dB gain and other frequency bands are also available.
-
ERAVANT
A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam.
-
ERAVANT
Coaxial attenuators are constructed with passivated stainless steel for durable use in both engineering labs and production line environments. These coaxial attenuators are designed and manufactured for low VSWR, low insertion loss and high attenuation value accuracy. The standard offering covers the frequency range of DC to 110 GHz and includes various interface options from 2.4 mm to 1 mm connector types as well as both male and female interfaces. The power handling of standard models is 0.5 to 1 watt continuous wave (CW). Higher power handling levels and different attenuation values and connector types from those listed below can also be requested.
-
ERAVANT
Probe antennas are offered as both standard and custom models with a rectangular waveguide interface. Probe antennas can only support linear polarization. These antennas are often used to measure the gain of other antennas by comparing the signal levels of the probe antenna and antenna under testing. The standard models operate across the full waveguide band and offer 6.5 dB nominal gain and 115 and 60 degrees half power beamwidth at center frequency. The below standard offering covers the frequency range of 8.2 to 170 GHz.
-
ERAVANT
Designed to provide accurate calibration of vector network analyzers (VNAs) that are used for measurements in standard rectangular waveguide from 2.6 to 50 GHz (WR284–WR22).
-
ERAVANT
An electronic device that can handle high-frequency signals.
-
ERAVANT
A weather resistant, quad ridged, dual polarized antenna feed designed for outdoor application that operates from 0.7 GHz to 4 GHz. The antenna offers 8.0 dBi nominal gain and a typical half power beamwidth of 68 degrees on the E-plane and 98 degrees on the H-plane. The typical side lobe level is -10 dB and the port isolation is 20 dB at center frequency, respectively. The antenna supports linear polarized waveforms and can form the circular polarized waveform if the two ports are fed with 90 degree phase differenced and equal amplituded signals. The antenna has four 0.20” holes for mounting. The RF ports of the antenna are equipped with two female SMA (F) coaxial connectors.
-
ERAVANT
In telecommunications and radar, a Cassegrain antenna is a parabolic antenna in which the feed antenna is mounted at or behind the surface of the concave main parabolic reflector dish and is aimed at a smaller convex secondary reflector suspended in front of the primary reflector. The beam of radio waves from the feed illuminates the secondary reflector, which reflects it back to the main reflector dish, which reflects it forward again to form the desired beam. The Cassegrain design is widely used in parabolic antennas, particularly in large antennas such as those in satellite ground stations, radio telescopes, and communication satellites.
-
ERAVANT
An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. The individual antennas (called elements) are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase relationship. The radio waves radiated by each individual antenna combine and superpose, adding together (interfering constructively) to enhance the power radiated in desired directions, and cancelling (interfering destructively) to reduce the power radiated in other directions. Similarly, when used for receiving, the separate radio frequency currents from the individual antennas combine in the receiver with the correct phase relationship to enhance signals received from the desired directions and cancel signals from undesired directions. More sophisticated array antennas may have multiple transmitter or receiver modules, each connected to a separate antenna element or group of elements.
-
ERAVANT
Low noise amplifiers, or LNAs, are designed and manufactured by utilizing the most advanced PHEMT or MMIC devices, thin film technologies, and an improved DC power supply to deliver a low noise performance with broad operating bandwidths and good gain flatness. While standard models focus on general purpose applications, additional models with differing frequency ranges, gains and noise figures are listed on the website. Custom designs are also offered to meet any user’s specific needs.
-
ERAVANT
Power amplifiers are designed and manufactured by utilizing the most advanced PHEMT or MMIC devices, thin film technologies, and an improved DC power supply to deliver a high output power with superior power added efficiency (PAE) and high linearity. While standard models focus on general purpose applications, additional models with differing frequency ranges, gains and power levels are listed on the website. Custom designs are also offered to meet any user’s specific needs.
-
ERAVANT
A universal heatsink, which is designed and fabricated for Eravant's active device applications with up to 15-watt power dissipation. The heatsink consists of the main heatsink body, a DC fan and a heat spreader. The heat spreader is also known as adapter, which is used to bridge the mounting gap between the heat sink main body and the to-be-heat-sunk devices, such as power amplifier, frequency active multiplier, oscillator, transmitter and transceiver due to various mounting hole locations. The heat spreader offers various mounting patterns to accommodate more than 15 product models. This heatsink is not only designed for Eravant's standard products and Uni-Guide™ featured products, but also for many industrial standard microwave and millimeter wave products offered by other manufacturers. Other heatsinks with different power dissipation capacities are offered under different model numbers.
