phased-array antenna


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phased-array antenna

phased-array antennaclick for a larger image
Phased array may be very simple, consisting of only two elements. Two examples of simple pairs of phased dipoles are shown in the illustration. On the left, two dipoles are spaced quarter wavelength apart in free space, and they are fed 90 degrees out of phase. This results in addition of phase in one direction and cancellation in the other. In this case, radiation pattern is unidirectional. However, phased array may have directional patterns with two, three, or even four different optimum directions. A bi-directional pattern can be obtained by spacing the dipoles at one wavelength and feeding them in phase as is shown in the illustration on the right.
An antenna that consists of a number of elements and in which the direction of the beam can be changed by varying the relative phase of the signal applied to each of these elements. The phased-array antenna scans electronically.
References in periodicals archive ?
To do so, KVH developed a new hybrid phased-array antenna solution designed to meet the performance, cost, and aesthetic goals necessary to succeed in the automotive market.
The TracVision A5, which began shipping to consumers in September 2003, has opened the automotive video market to mobile DIRECTV(R) service with KVH's hybrid phased-array antenna technology (patents pending).
The ultra low-profile TracVision A5 has opened the entire automotive video market to mobile DIRECTV service through the development of hybrid phased-array antenna technology that is both practical for use aboard an SUV, minivan, or other passenger vehicle and affordable to consumers.
Hundreds of Rows of Beer and Wine Pose No Signal Transmission Problems for Vivato's Patented Signal Steering Technology and Phased-Array Antenna Architecture
The 5-inch high TracVision A5 offers a rugged, sleek design that houses our innovative hybrid phased-array antenna technology," commented Jim Dodez, KVH's vice president of marketing.
Available at retailers nationwide, the ultra low-profile TracVision A5 satellite TV antenna uses KVH's hybrid phased-array antenna technology (patents pending) and is designed specifically for use in passenger vehicles.
The objective of this program with the DARPA is to validate and develop an approach to wafer-scale integration of phased-array antenna electronics, focusing on wafer-scale interconnects for radio frequency (RF) and control signals.
The satellite television system is based on phased-array antenna technology developed by Boeing.
Hill in Virginia, Cubic's TCDL linked with ITT's MLAS phased-array antenna to stream high-speed video across a Ku band data link.
Unlike conventional, mechanically steered antennas that are bulky and slow to switch between satellites, the Boeing phased-array antenna steers beams electronically, permitting instantaneous connections between satellites and mobile platforms.
This is a natural evolution for our satellite TV antenna technology and allows us to take a step toward our goal of applying our hybrid phased-array antenna across all of our satellite markets.