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A leaky-wave antenna is basically a waveguiding structure that possesses a mechanism that permits it to leak power all along its length. The earliest example of such an antenna is a rectangular waveguide with a continuous slit cut along its side,1,2 as shown in Figure 11-1.
8 Jun 2015
Since the radiation mechanisms of uniform and periodic leaky-wave antennas result from different physical processes, these antennas differ in their achievable scan ranges. Consider the dielectric waveguide in Fig. 2.5.
Leaky-Wave Antenna (LWA) belong to the more general class of Traveling wave antenna, that use a traveling wave on a guiding structure as the main radiating mechanism. Traveling-wave antenna fall into two general categories, slow-wave antennas and fast-wave antennas, which are usually referred to as leaky-wave antennas.
12 Jul 2016 Generally, there two types of leaky-wave antennas: uniform and periodic. The uniform leaky-wave antennas such as slot waveguides can only scan in forward quadrant, which cannot approach broadside too closely. The periodic leaky-wave antennas such as periodically-loaded dielectric waveguides can
The antenna proposed is a leaky-wave slot array antenna fed by a dual offset Gregorian re- flector system realized by pins in a parallel plate waveguide. This antenna can scan in both the azimuth and the elevation plane. In particular a frequency reuse scheme and a multi feed focal plane render possible, respectively, the.
A Thin Wall Leaky Waveguide Antenna. RAhlESH GARG, K. C. GWTA, AND R. S€€AR-%N. Absfruct-A thin wall leaky waveguide- antenna (TLA) obtained by replacing one of the narrow walls of a rectangular waveguide by a film of metal with thickness less than the skin depth is discussed. The radiation pattern for TLA has
8 Jun 2015 The presentation highlights design, testing, fabrication, and lessons learned of leaky waveguide antennas. Take a glimpse into the engineering design process w
16 Apr 2017 Full-text (PDF) | A leaky-wave antenna operating at the frequency of 94 GHz and showing flexible radiation properties, is presented in this paper. The proposed structure is based on a microstrip line loaded with metallic posts. By means of the width W of the line, the control over the phase consta

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March 2018