Feed horn

About: Feed horn is a research topic. Over the lifetime, 2395 publications have been published within this topic receiving 26548 citations. The topic is also known as: feedhorn.

Microwave holographic metrology of large reflector antennas

Abstract: A microwave holographic technique for the determination of amplitude and phase of the principal and cross-polarized aperture fields of large reflector antennas is described. The hologram formation process utilizes the elevation over azimuth scanning system normally associated with these antennas, and, in this respect, appears to be unique among other proposed methods of field probing. The present work describes the means used to obtain vital information on the antenna structure such as E - and H -plane phase centers of the feed, and rms values of the reflector surface profile errors. Accurate prediction of E - and H -plane radiation patterns in the near- and far-field is also demonstrated.

Out-of-band radio link protocol and network architecture for a wireless network composed of wireless terminals with millimetre wave frequency range radio units

Abstract: The present invention relates to a wireless transmitter comprising a transmitter radio unit working a wireless transmitter comprising a transmitter radio unit working in the millimeter wave frequency band using a directional antenna and a bidirectional radio unit working in a frequency range different from said transmitter radio unit and using an omnidirectional antenna. The invention further relates to a wireless receiver and a wireless relay.

Horn antenna device and step-shaped signal feed-in apparatus thereof

Abstract: The present invention relates to a horn antenna device. The horn antenna device has a step-shaped signal feed-in apparatus and a conical horn antenna. The step-shaped signal feed-in apparatus has a stepped body having multiple stairs and a connecting pin. The stepped body is adapted to radiate electromagnetic waves and receive a reflection of the electromagnetic waves. According to the structure of the step-shaped signal feed-in apparatus of the invention, the resonating modes are easy to be determined. The directivity and the signal-to-noise rate are improved. In addition, the connecting pin is directly connected to the stairs for improving the signal stability of the horn antenna device.

Antenna device and method for attaching the same

Abstract: An antenna device includes: a radio device for radio wave transmission; a primary radiator that has a function to radiates radio waves generated by the radio device; a parabolic reflector that reflects the radio waves radiated from the primary radiator; a shroud that shields against unnecessary radiation radio waves among the radio waves radiated from the primary radiator and reflected by the parabolic reflector; and an antenna mounting mechanism that fits the parabolic reflector to an antenna attachment pole. The shroud is arranged so as to cover at least a right and left of the parabolic reflector, the radio device and the primary radiator are arranged inside the shroud, and the antenna mounting mechanism fits the parabolic reflector to the antenna attachment pole so that the antenna attachment pole is located at a lateral center position of the parabolic reflector.

Quad ridged feed horn including a dielectric spear

Abstract: A microwave feed horn including: a central resonant elongated cavity open at a distal end and including a series of electromagnetic emission or reception sources at a proximal end and having a series of ridges along a wall thereof; and an axial elongated dielectric spear element extending from the distal to proximal end, the spear element acting to increase the beam width of any transmitted or received electromagnetic energy at high frequencies.