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Lens Antennas
a microwave antenna used to focus or concentrate waves.
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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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Spot-Focusing Lens Antennas
The antenna employs a low loss lens to offer excellent aperture efficiency at 105.96 GHz. The lens antenna is equipped with a standard WR-10 waveguide and UG-387/U-M flange as its input port. It supports linear polarized waveforms.
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Lens Corrected Antennas
Lens corrected antennas are offered with either a circular or rectangular waveguide interface. While lens corrected antennas with a rectangular waveguide interface can only support linear polarization, models with a circular waveguide interface can support various polarization types including horizontal, vertical, left-handed circular, and right-handed circular polarization for broader applications. These antennas are designed and constructed to offer high efficiency, low side lobes and a rugged mechanical configuration. In general, lens corrected antennas are ideal for achieving gain levels of up to 30 dB with moderate side lobe rejections. Additionally, its dielectric lens provides phase error corrections and serves as a radome to protect from environmental conditions.
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Gaussian Optics Lens Antennas
SAG-1441544002-06-S1
Gaussian optics lens antennas are offered with either a circular or rectangular waveguide interface. While Gaussian optics lens antennas with a rectangular waveguide interface can only support linear polarization, models with a circular waveguide interface can support various polarization types including horizontal, vertical, left-handed circular, and right-handed circular polarization for broader applications. Gaussian optics lens antennas are designed and constructed to offer high efficiency, low side lobes and a rugged mechanical configuration. A corrugated feed horn and dielectric lens allow these antennas to form well-defined Gaussian beams. Additionally, the dielectric lens provides phase error corrections and serves as a radome to protect from environmental conditions.
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Standard Gain Horn Conical Lens antennas
Elva’s SLHA series of standard gain horn lens antennas cover the frequency range of 18 to 220 GHz in ten waveguide bands. They can be issued with rectangular or circular waveguide. Lens technology significantly allows decreasing mechanical sizes of horns and correcting beam for the best performance. These horns are ideal solution for measurement gain of other antennas, short range radars and radiometers.
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Antennas
Flann offers a wide range of antenna designs including Standard Gain Horns, Sectoral Horns and Lens Horn Antennas. Additionally Flann has a comprehensive custom design capability for bespoke antennas
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FLAT Antennas
CTG recently developed a new paradigm in linearly-polarized antennas called the Flat Lens Antenna Technology or ‘FLAT’. These antennas have directivities similar to conventional dual-ridge antennas, but in a much lighter and “flatter” package. They can be used as a direct replacement for conventional horns for a wide variety of applications. They are made using composites technology so are also rugged and are ideal for both indoor and out-door applications.
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Millimeter Wave Antennas
Ducommun millimeter wave products include ACH, ARH and ALC series circular, rectangular gain horn antennas and lens corrected horn antennas for system applications. Low side lobes, ridged configuration and low cost are the main features of these antennas. The standard gain value and half power beamwidth at mid-frequency point of each waveguide band are 23 dBi and 9 degrees, respectively. Other gain values are available as customer order. These antennas cover the frequency range of 18 to 110 GHz.
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Standard Gain Horn Pyramidal Horn Antenna
Elva’s SGPH series of standard gain horn antennas cover the frequency range of 18 to 220 GHz in ten waveguide bands. They can be issued with rectangular or circular waveguide. Lens technology significantly allows decreasing mechanical sizes of horns and correcting beam for the best performance. These horns are ideal solution for measurement gain of other antennas, short range radars and radiometers.
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Radar Level Transmitter
DR3500
The DR3500, FMCW 80 GHz radar level transmitter offers State-of-the-Art performance for liquids in hygienic applications. The DR3500 has an extensive choice of hygienic process connections including flush mounted PEEK Lens antennas. These are CIP/SIP suitable and this model offers small dead zone and beam angles for small and narrow tanks.
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Ocean Signal RescueME PLB1 (Personal Locator Beacon)
RescueME PLB1
The RescueME PLB1 is the world's smallest 406mhz & GPS enabled PLBOperation of the rescueME PLB could not be simpler. To activate the PLB: Pull the retractable antenna out by its end tab, flip open the spring loaded cover over the activation button, hold the button for 1 second until the lights blink. Visual instructions are clearly printed on the case. When activated, the rescueME PLB1 will transmit accurate position data from its 66 channel GPS for a minimum of 24 hours while the integrated strobe light ensures maximum visibility.Ocean Signal has ensured that rescueME, like all of its other safety products, exceeds statutory requirements. RescueME PLB provides an incredible 7 year battery life, and is covered by a 7 year warranty. Even after more than 24 hours of continuous operation, and when the battery power is insufficient to transmit the satellite signal, the PLB1's homing beacon and strobe light will continue to operate. This high intensity strobe light features a molded lens to enhance the visibility of its efficient LED and it gives a powerful 1 candela light emission.Self-test of the PLB can be carried out with a simple button press with the start of test and results clearly indicated by a green flashing light. The antenna is easily extended like a normal tape measure and can be retracted using the winding mechanism on the top of the unit. This unique feature greatly facilitates user training and familiarization as it is not a one time deployable antenna similar to existing PLBs.rescueME comes with a snap-in mounting bracket and universal rubber mounting strap which can be fitted permanently or with each use. It is also supplied with a detachable flotation lanyard to accommodate all scenarios out of the box.
