The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We propose high gain antennas with a broad bandwidth for the 120 GHz band. The proposed antennas are fabricated by diffusion bonding of laminated thin copper plates which has the advantages of high precision and low loss even in a high frequency region such as 120 GHz. For the stable fabrication using the diffusion bonding technique, we propose a new feeding structure with a double layer. A 32×32-element...
An 120GHz-band 16×16-slot array antenna fed with a corporate circuit has realized about 70% antenna efficiency including losses from 117GHz to 129GHz. 10Gbps data transmission with BER<10−12 is achieved with an effective transmission power of −14dBm at a distance of 1.4m. The antennas could be extended for sub-millimeter wave and THz bands.
We propose a double-layer slotted waveguide array antenna having a wide bandwidth and a high efficiency for 120 GHz band. The diffusion bonding of laminated thin metal plates provides high precision even in very high millimeter bands such as 120 GHz. We design a 16×16-element array antenna having 90% peak aperture efficiency with 33.4 dBi at 126.5 GHz.
The fabrication technique called “pressure bonding” by applying a pressing at ambient temperature which has very high mass-productivity is supposed to realize a 20×20 elements double-layer waveguide slot array. Since the electric contact can not be realized at all locations, an alternating-phase fed array is adopted in this study. A partially-corporate feeding circuit installed in the bottom layer...
We design and fabricate a double-layer slotted waveguide array antenna having a wide bandwidth and a high efficiency for 120 GHz band and 350 GHz band using diffusion bonding of laminated thin metal plates. The fabricated 120GHz-band antennas are measured in two types of systems to examine the performance. The firstly fabricated antenna shows about 65% efficiency with 31.5 dBi gain around the design...
A partially corporate feeding waveguide located below the radiating waveguide is introduced to a waveguide slot array to enhance the bandwidth of gain. A PMC termination associated with the symmetry of the feeding waveguide as well as uniform excitation is newly proposed for realizing dense and uniform slot arrangement free of high sidelobes. To exploit the bandwidth of the feeding circuit, the 4...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.