Bernd Ruemmeli

Bio: Bernd Ruemmeli is an academic researcher. The author has contributed to research in topics: Cassegrain antenna & Reflector (antenna). The author has an hindex of 2, co-authored 3 publications receiving 188 citations.

Reflector antenna and method of producing a sub-reflector

Abstract: A reflector antenna is disclosed with a main reflector and a rotatable sub-reflector that significantly reduces vibrations in the sub-reflector. The sub-reflector includes a reflecting surface located in front of the main reflector between the main reflector and a radiation source as well as a cylindrical shaft that extends in a direction parallel to a main axis of the main reflector. The sub-reflector is made of two connected parts, wherein one part includes the reflecting surface, and the other part is made of a non-reflecting material and formfittingly engages with the reflecting surface. The sub-reflector is rotatably supported on the cylindrical shaft and has a rotation speed of between approximately 1500 to 3500 rpm.

Control system for aligning a pivotable reflector antenna

Abstract: the system has a rotatable subreflector in front of the reflector which reflects the radiation from an electromagnetic source to a receiver element which generates trigger signals for a signal measurement of the reflected radiation. The flat subreflector is inclined wrt. the reflector, which forms a section of a parabolic surface, by an offset angle

Reflector antenna and method of fabricating a subreflector

Abstract: Reflektorantenne mit einem Hauptreflektor, vor dem in Richtung einfallender Strahlen ein mit einer reflektierenden Flache versehener Subreflektor drehbar angeordnet ist. Reflector antenna with a main reflector, a reflective surface provided with a sub-reflector is rotatably disposed in front of the incident beam direction. Der Subreflektor weist eine in Richtung einer Hauptachse des Hauptreflektors verlaufende Zylinderachse auf, auf der der Subreflektor mit einer hohen Drehzahl von etwa 1500 bis etwa 3500 U/min. The subreflector has a extending in the direction of a main axis of the main reflector cylinder axis on which the sub-reflector with a high speed of about 1500 to about 3500 r / min. drehbar gelagert ist. is rotatably supported. In dem Verfahren zum Herstellen des Reflektors werden zwei im Wesentlichen zylindrische Teilstucke aus einer nicht reflektierenden Masse hergestellt. In the method of manufacturing the reflector two substantially cylindrical sections of a non-reflective material are produced.

Wireless power transmission with selective range

Abstract: The present disclosure describes a methodology for wireless power transmission based on pocket-forming. This methodology may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. The transmitter may identify and locate the device to which the receiver is connected and thereafter aim pockets of energy to the device in order to power it. Pockets of energy may be generated through constructive and destructive interferences, which may create null-spaces and spots of pockets of energy ranged into one or more radii from transmitter. Such feature may enable wireless power transmission through a selective range, which may limit operation area of electronic devices and/or may avoid formation of pockets of energy near and/or over certain areas, objects and people.

System and method for controlling communication between wireless power transmitter managers

Abstract: A method for controlling communication between wireless power transmitter managers is disclosed. According to some aspects of this embodiment, wireless power transmission system may include one or more wireless power transmitter managers and one or more wireless power receivers for powering various customer devices. A WiFi connection may be established between wireless power transmitter managers to share information between system devices. Wireless power transmitter manager may need to fulfill two conditions to control power transfer over a customer device; customer device's signal strength threshold has to be significantly greater than 50%, such as 55% or more of the signal strength measured by all other wireless power transmitter managers and has to remain significantly greater than 50% for a minimum amount of time.

Receivers for Wireless Power Transmission

Abstract: The present invention may provide various electric receiver arrangements which may be used to provide wireless power transmission using suitable power transmission techniques such as pocket-forming. In some embodiments, receivers may include at least one antenna connected to at least one rectifier and one power converter. In other embodiments, receivers including a plurality of antennas, a plurality of rectifiers or a plurality of power converters may be provided. In addition, receivers may include communications components which may allow for communication to various electronic equipment including transmitters, phones, computers and others. Lastly, various implementation arrangements may be provided for including receivers in electronic devices.

Portable wireless charging pad

Abstract: The present disclosure provides a method and apparatus for improved wireless charging pads for charging and/or powering electronic devices. Such pads may not require a power chord for connecting to a main power supply, for example a wall outlet. In contrast, power may be delivered wireless to the foregoing pads through pocket-forming. A transmitter connected to a power source may deliver pockets of energy to the pads which through at least one embedded receiver may convert such pockets of energy to power. Lastly, the pads may power and/or charge electronic devices through suitable wireless power transmission techniques such as magnetic induction, electrodynamics induction or pocket-forming.