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| Company type | Private company |
|---|---|
| Industry | Satellite communications |
| Founded | August 12, 2012 |
| Founder | Nathan Kundtz |
| Headquarters | Redmond, Washington U.S |
Key people |
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| Products |
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Number of employees | 275 (2022) |
| Website | www |
Kymeta Corporation is a satellite communications company based in the United States.
Kymeta was founded in August 2012 after spinning out from Intellectual Ventures and manufactures software-enabled, meta-materials based electronic beamforming antennas and terminals for satellite communications. [2] Founder Nathan Kundtz served as the CEO until 2018. [3]
In March 2017, Kymeta announced commercial availability of its first products, the mTennaU7 antenna subsystem module (ASM) and KyWay terminal, which are the first metamaterials-based products to be successfully commercialized. [4] Kymeta partnered with Intelsat to offer KĀLO satellite services, which can be bundled with all Kymeta products. As of October 2018, the company has raised nearly $200 million in funding from various investors including Bill Gates and Lux Capital. [3]
Metamaterial Surface Antenna Technology (MSAT) is an innovative approach in satellite communications, developed by Kymeta Corporation. MSAT aims to overcome challenges in broadband satellite communications, especially in scenarios involving mobile platforms and non-geostationary satellites.
An important innovation in MSAT is the incorporation of high-birefringence liquid crystals (LC) as a tunable dielectric at microwave frequencies. This enables large-angle beam scanning of over 60 degrees while consuming minimal power, less than 10 Watts. Significantly, this scanning capability is achieved without mechanical components. The antenna's slim profile, with a thickness of about 5.0 cm, further contributes to its efficiency.
In terms of antenna design, MSAT introduces an innovative perspective by using metasurfaces and holographic beamforming principles. Unlike traditional three-dimensional metamaterials, which rely on bulky structures and resonant phenomena, MSAT employs metasurfaces characterized by small periodic scatterers and surface thickness relative to the wavelength of interest. This approach enhances efficiency and minimizes losses.
Metamaterial Surface Antenna Technology (MSAT) by Kymeta offers a unique perspective on addressing challenges in satellite communications. By incorporating high-birefringence liquid crystals, metasurfaces, and holographic beamforming, MSAT enables the development of electronically-scanned antennas that effectively address bandwidth, efficiency, and manufacturing tolerance issues. These antennas demonstrate exceptional performance in both Ku and Ka satellite bands, making them a potential solution for various mobile satellite applications. [5]
Polarization is a property of transverse waves which specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. A simple example of a polarized transverse wave is vibrations traveling along a taut string (see image), for example, in a musical instrument like a guitar string. Depending on how the string is plucked, the vibrations can be in a vertical direction, horizontal direction, or at any angle perpendicular to the string. In contrast, in longitudinal waves, such as sound waves in a liquid or gas, the displacement of the particles in the oscillation is always in the direction of propagation, so these waves do not exhibit polarization. Transverse waves that exhibit polarization include electromagnetic waves such as light and radio waves, gravitational waves, and transverse sound waves in solids.
A metamaterial is a type of material engineered to have a property, typically rarely observed in naturally occurring materials, that is derived not from the properties of the base materials but from their newly designed structures. Metamaterials are usually fashioned from multiple materials, such as metals and plastics, and are usually arranged in repeating patterns, at scales that are smaller than the wavelengths of the phenomena they influence. Their precise shape, geometry, size, orientation, and arrangement give them their "smart" properties of manipulating electromagnetic, acoustic, or even seismic waves: by blocking, absorbing, enhancing, or bending waves, to achieve benefits that go beyond what is possible with conventional materials.
Zinc telluride is a binary chemical compound with the formula ZnTe. This solid is a semiconductor material with a direct band gap of 2.26 eV. It is usually a p-type semiconductor. Its crystal structure is cubic, like that for sphalerite and diamond.
A thin-film bulk acoustic resonator is a device consisting of a piezoelectric material manufactured by thin film methods between two conductive – typically metallic – electrodes and acoustically isolated from the surrounding medium. The operation is based on the piezoelectricity of the piezolayer between the electrodes.
Constantine A. Balanis is a Greek-born American scientist, educator, author, and Regents Professor at Arizona State University. Born in Trikala, Greece on October 29, 1938. He is best known for his books in the fields of engineering electromagnetics and antenna theory. He emigrated to the United States in 1955, where he studied electrical engineering. He received United States citizenship in 1960.
Metamaterial antennas are a class of antennas which use metamaterials to increase performance of miniaturized antenna systems. Their purpose, as with any electromagnetic antenna, is to launch energy into free space. However, this class of antenna incorporates metamaterials, which are materials engineered with novel, often microscopic, structures to produce unusual physical properties. Antenna designs incorporating metamaterials can step-up the antenna's radiated power.
A tunable metamaterial is a metamaterial with a variable response to an incident electromagnetic wave. This includes remotely controlling how an incident electromagnetic wave interacts with a metamaterial. This translates into the capability to determine whether the EM wave is transmitted, reflected, or absorbed. In general, the lattice structure of the tunable metamaterial is adjustable in real time, making it possible to reconfigure a metamaterial device during operation. It encompasses developments beyond the bandwidth limitations in left-handed materials by constructing various types of metamaterials. The ongoing research in this domain includes electromagnetic band gap metamaterials (EBG), also known as photonic band gap (PBG), and negative refractive index material (NIM).
The term chiral describes an object, especially a molecule, which has or produces a non-superposable mirror image of itself. In chemistry, such a molecule is called an enantiomer or is said to exhibit chirality or enantiomerism. The term "chiral" comes from the Greek word for the human hand, which itself exhibits such non-superimposeability of the left hand precisely over the right. Due to the opposition of the fingers and thumbs, no matter how the two hands are oriented, it is impossible for both hands to exactly coincide. Helices, chiral characteristics (properties), chiral media, order, and symmetry all relate to the concept of left- and right-handedness.
The history of metamaterials begins with artificial dielectrics in microwave engineering as it developed just after World War II. Yet, there are seminal explorations of artificial materials for manipulating electromagnetic waves at the end of the 19th century. Hence, the history of metamaterials is essentially a history of developing certain types of manufactured materials, which interact at radio frequency, microwave, and later optical frequencies.
A flat lens is a lens whose flat shape allows it to provide distortion-free imaging, potentially with arbitrarily-large apertures. The term is also used to refer to other lenses that provide a negative index of refraction. Flat lenses require a refractive index close to −1 over a broad angular range. In recent years, flat lenses based on metasurfaces were also demonstrated.
A plasmonic metamaterial is a metamaterial that uses surface plasmons to achieve optical properties not seen in nature. Plasmons are produced from the interaction of light with metal-dielectric materials. Under specific conditions, the incident light couples with the surface plasmons to create self-sustaining, propagating electromagnetic waves known as surface plasmon polaritons (SPPs). Once launched, the SPPs ripple along the metal-dielectric interface. Compared with the incident light, the SPPs can be much shorter in wavelength.
The first smart antennas were developed for military communications and intelligence gathering. The growth of cellular telephone in the 1980s attracted interest in commercial applications. The upgrade to digital radio technology in the mobile phone, indoor wireless network, and satellite broadcasting industries created new opportunities for smart antennas in the 1990s, culminating in the development of the MIMO technology used in 4G wireless networks.
Microwave imaging is a science which has been evolved from older detecting/locating techniques in order to evaluate hidden or embedded objects in a structure using electromagnetic (EM) waves in microwave regime. Engineering and application oriented microwave imaging for non-destructive testing is called microwave testing, see below.
A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism that enable the intentional redistribution of the RF currents over the antenna surface and produce reversible modifications of its properties. Reconfigurable antennas differ from smart antennas because the reconfiguration mechanism lies inside the antenna, rather than in an external beamforming network. The reconfiguration capability of reconfigurable antennas is used to maximize the antenna performance in a changing scenario or to satisfy changing operating requirements.
An electromagnetic metasurface refers to a kind of artificial sheet material with sub-wavelength features. Metasurfaces can be either structured or unstructured with subwavelength-scaled patterns.
ALCAN Systems GmbH is a telecommunications company based in Darmstadt, Germany. The company is develops antenna systems for fixed, mobile, cellular and satellite-communication.
A transmitarray antenna is a phase-shifting surface (PSS), a structure capable of focusing electromagnetic radiation from a source antenna to produce a high-gain beam. Transmitarrays consist of an array of unit cells placed above a source (feeding) antenna. Phase shifts are applied to the unit cells, between elements on the receive and transmit surfaces, to focus the incident wavefronts from the feeding antenna. These thin surfaces can be used instead of a dielectric lens. Unlike phased arrays, transmitarrays do not require a feed network, so losses can be greatly reduced. Similarly, they have an advantage over reflectarrays in that feed blockage is avoided.
A reflectarray antenna consists of an array of unit cells, illuminated by a feeding antenna. The feeding antenna is usually a horn. The unit cells are usually backed by a ground plane, and the incident wave reflects off them towards the direction of the beam, but each cell adds a different phase delay to the reflected signal. A phase distribution of concentric rings is applied to focus the wavefronts from the feeding antenna into a plane wave . A progressive phase shift can be applied to the unit cells to steer the beam direction. It is common to offset the feeding antenna to prevent blockage of the beam. In this case, the phase distribution on the reflectarray surface needs to be altered. A reflectarray focuses a beam in a similar way to a parabolic reflector (dish), but with a much thinner form factor.
Yang Hao is a British electrical engineer, academic, and author most known for his research in wireless connectivity and metamaterials. He is the holder of the QinetiQ/Royal Academy of Engineering (RAE) Research Chair, and serves as the Director of both the EPSRC Research Centre on Future Wireless Connectivity and the EPSRC Centre for Transformation Optics and Metamaterials. He is also a Professor of Antennas and Electromagnetics, and Deputy Vice Principal for Strategic Research at Queen Mary University of London (QMUL). He is a Co-Founder and Director of AOTOMAT, and co-founded a satellite communication company called Isotropic Systems.
Antoine Georges Roederer is a French engineer and scientist known for his significant contributions to antenna systems and satellite communications design. He is notably associated with the European Space Agency and Delft University of Technology.
