Waveguide-fed plastic horn antennas have been demonstrated for W-band applications using a versatile and cost-effective micro hot embossing process. The three-dimensional (3D) polymer structure with internally coated conductor is composed of a pyramidal horn, an E-plane waveguide bend, two resonant cavities for impedance matching and a connecting rectangular waveguide. Measurement results show ...

Different satellite systems have been defined to provide broadband communications and internet access in remote geographical areas in Ka band (20-30 GHz) [1-2], being the up-link at 30 GHz and the down-link at 20 GHz. Costeffective antennas are required for fixed and portable terminals in Ka-band. Conventional reflectors are a preferred option to maintain reduced costs. However, the different r...

We propose a W-band circularly polarized reflectarray antenna in this article, which contains single-layer and linearly horn feed. To realize the proposed antenna, we designed novel multi-resonant element containing Rogers RT5880 substrate with copper patches printed on its both surfaces. Then, circular 12.25 λ0 (39.1 mm) aperture diameter was based element, whose center frequency is 94 GHz. fu...

Various wideband antennas have been interesting subjects in antenna designs and have found important applications in military and civilian systems. For examples, the super-wideband (SWB) antenna is a key component of electronic counterwork equipment in the information warfare; while the ultra-wideband (UWB) antenna is widely used in impulse radar and communication systems. With the development ...

Over-the-air (OTA) measurement techniques have, and will continue to a key role in evaluating the performance of modern antennas wireless devices. The new random line-of-sight (random-LOS) setup offers evaluation OTA different types devices, for example, car small devices random-LOS environment. A plane wave is synthesized test zone setup, where far-field radio base station can be emulated. We ...

This paper describes numerical analyses of the distancedependent gain variation that exists in gain measurements based on the Friis transmission formula for typical broadband antennas, including doubleridged guide horn and log-periodic dipole array antennas. The analyses are performed by simulating gain measurements using the method of moments with higher-order basis functions and the finite in...