|Antenna and Quasioptical Products|
|Millitech's full range
of MMW antenna products and technologies includes Cassegrain reflector,
feed horn, standard gain horn, and Gaussian optic lens
antennas, as well as, custom designed antenna arrays.
Our comprehensive range of antenna product offerings
also includes polarizers, orthomode transducers,
reflectors, comparators, and waveguide adapters to allow
us to provide the most complete technical solutions for applications
up to 300 GHz.
|Move cursor over the links to see product images|
|Click the links for more information|
The series SFH is a conical horn antenna with corrugation on the inside walls. This feature provides symmetrical radiation patterns in E- and H-planes. This antenna also provides lower sidelobes as compared to the series CHA, conical horn antenna. The standard design has a 3 dB beamwidth of 25° (typical) from 18 to 220 GHz. The series SFH is offered with circular or rectangular waveguide output. The circular waveguide output version can support multiple polarization and be used in conjunction with other Millitech products such as the POL, SPL and WAC series
The series CRA Cassegrain reflector antenna is available from 18 to 220 GHz with reflector diameters from 6 to 48 inches. The 3 dB beamwidth and gain of the antenna are dependent on the diameter of the main reflector and the frequency. The sidelobes are slightly higher than those of the GOA series. The series CRA design offers compactness, versatility and high gain. It can support multiple polarization by incorporating the series OMT orthomode transducer.
Millitech’s series DPA antennas provide simultaneous dual polarization and frequency coverage from 18-40 GHz. No RF blockage of the aperture ensures excellent performance. The mechanical design of these antennas allows for simple assembly/disassembly without affecting performance.
Millitech series DPR dual polarization ridged horn antennas are manufactured from aluminum alloy and offer high performance over a wide bandwidth from 18 to 40 GHz. These antennas can support simultaneous vertical and horizontal polarizations with a typical isolation of 25 dB. These horns come equipped with two Type K (2.9 mm) connectors. The half power (-3 dB) beamwidth for these horns is typically 40° over the entire 22 GHz bandwidth.
These 18 - 40 GHz Gaussian Optic Antennas provide superior efficiency due to low blockage and low-loss optics. The dual-polarization versions have excellent cross-polarization isolation using a grid polarizer and two linear polarized feeds.
FEATURES AND APPLICATIONS:
The series GOA is a Gaussian optics lens antenna that provides high efficiency and low sidelobes. It offers symmetric antenna patterns in E- and H-planes. The antenna is available in frequencies ranging from 18 to 220 GHz. The gain and 3 dB beamwidth depend on the aperture size of the lens and the frequency. The antenna can be configured in a number of ways to offer polarization diversity.
The series POL linear-circular polarizer converts a polarized signal from linear to circular, or the reverse. The frequency range is 10% maximum of center frequency, with a low axial ratio of 1 dB. The series POL linear-circular polarizer offers low insertion loss with broadband operation.
The series GFS freestanding wire grid polarizer consists of an array of parallel wires stretched tightly into a planar surface and affixed to a mounting frame. The closely spaced wires reflect essentially 100% of the electric field components parallel to the direction of the wires and transmit the component of the field perpendicular to the wires.
Theoretical Grid Performance (max grid size 10”)
The series OMT orthomode transducer is used to combine or separate two orthogonal linearly polarized signals simultaneously. Typically, the output (or input) port is in the circular waveguide, which can support linear polarization. Isolation is greater than 25 dB between the two linear polarizations, and nar¬rower band versions with greater isolation are also available. This transducer can be used in conjunction with the series POL polarizer to handle circular polarized signals.
The series SGH standard gain horns, offered as conical and pyramidal, are used to measure gain of other antennas. These horns are offered from 18 to 325 GHz in twelve waveguide bands. The SGH horns are ideally suited for reference sources in dual channel antenna test receivers, and can be used as pickup horns for radiation monitoring.
|A low cost alternative to the SFH series, this antenna provides a 3 dB beamwidth ranging from 10° to 60°. It is offered with either a circular or rectangular waveguide output, but the circular output product can support multiple polarization, and can be used with other Millitech products such as the POL, SPL, and WAC series.|
|Click Here to download the CHA product datasheet|
The series WAC circular-to-rectangular waveguide adapter provides transition from standard rectangular to circular waveguide. The adapter can be used with conical and scalar feed horns, and provides wide bandwidths with low loss and low VSWR. The series WAC adapter is available in a complete range of flange patterns.
The series MPC monopulse comparator features unrivaled insertion loss performance far superior to typical industry counterparts. The comparator is a 5-port device that can be used in target acquisition and tracking systems.
The series TCC trihedral corner reflectors provide a very high radar cross section (RCS) target for radar testing and characterization. With suitable alignment, the effect of clutter on measurements such as that caused by vehicles, terrain and structures can be greatly reduced. Select from the variety of sizes available to attainthe desired RCS for the frequency of your application.
The Waveguide Rotary Joint allows the transmission of RF signals from stationary to 360˚ rotating rectangular waveguide. Common applications include scanning antennas of any kind used in radar and radiometer systems.
Millitech will engineer custom variations of our standard MMW components, as well as, multi-component assemblies and solutions, with minimal non-recurring engineering (NRE) costs, to meet your specific requirements. Typically these modification are to meet one or more of the following requirements:
Click Here for more information on Millitech's custom capabilities, components, assemblies and solutions.
Please contact your local sales representative or Millitech's sales team for information and quoting.