Abstract: The present disclosure is related to nacelle cover panels and nacelle cover assemblies. The nacelle cover panel is configured to be mounted in a nacelle of a wind turbine. Further, the nacelle cover panel comprises a composite panel including at least an outer roof surface and an inner surface, and a structural frame coupled to the composite panel. Methods of providing a nacelle assembly are also disclosed.

Abstract: The present disclosure is related to nacelle cover panels and nacelle cover assemblies. The nacelle cover panel is configured to be mounted in a nacelle of a wind turbine. Further, the nacelle cover panel comprises a composite panel including at least an outer roof surface and an inner surface, and a structural frame coupled to the composite panel. Methods of providing a nacelle assembly are also disclosed.

Abstract: The present invention discloses a helicopter hoisting platform for a wind turbine nacelle cover, the helicopter hoisting platform comprising a composite layer and a plurality of metal plates arranged on the outer surface of the composite layer, wherein the plurality of metal plates forms a conductive network electrically connected to a ground connection.

Abstract: An electronic device includes a first antenna, a second antenna, and a device cover. The first antenna may be configured to transmit or receive signals at a first frequency, and the second antenna may be configured to transmit or receive signals at a second frequency. The device cover may be configured to enclose at least a portion of the device, the and may have a first thickness in a first area and a second thickness in a second area. The first area may be substantially aligned with a boresight of the first antenna, and the second area may be substantially aligned with a boresight of the second antenna. The first thickness may be different than the second thickness.

Abstract: A frequency-tunable capacitively-loaded magnetic dipole antenna includes a transformer loop having a balanced feed interface, and a capacitively-loaded magnetic dipole radiator with a tunable effective electrical length. In one embodiment, the capacitively-loaded magnetic dipole radiator includes a tunable electric field bridge. For example, the capacitively-loaded magnetic dipole radiator may comprise a quasi loop with a tunable electric field bridge interposed between the quasi loop first and second ends. The electric field bridge may be an element such as a ferroelectric (FE) tunable capacitor or a microelectromechanical system (MEMS) capacitor, to name a couple of examples. In certain embodiments, the capacitively-loaded magnetic dipole radiator includes a quasi loop with a loop perimeter. The effective electrical length of the radiator is changed by adjusting the perimeter using an element such as a MEMS switch, or a semiconductor switch.

Abstract: An inverted-F ferroelectric antenna is provided. The antenna comprises a counterpoise, or groundplane, and an inverted-F structure radiator having a first end connected to the counterpoise. A fixed dielectric material, typically a ceramic or air separates the radiator and the counterpoise. A capacitor, formed from a ferroelectric dielectric is connected between the second end of the radiator and the counterpoise. The capacitor has a variable dielectric constant, and the antenna is resonant at a frequency responsive to the dielectric constant of the capacitor ferroelectric material. Typically, the capacitor includes a dielectric formed from a fixed constant dielectric, together with a ferroelectric dielectric with a variable dielectric constant. A bias voltage feed is used to apply a voltage to the capacitor ferroelectric dielectric. The ferroelectric dielectric has a dielectric constant that varies in response to the applied voltage.

Abstract: An inverted-F ferroelectric antenna is provided. The antenna comprises a counterpoise, or groundplane, and an inverted-F structure radiator having a first end connected to the counterpoise. A fixed dielectric material, typically a ceramic or air separates the radiator and the counterpoise. A capacitor, formed from a ferroelectric dielectric is connected between the second end of the radiator and the counterpoise. The capacitor has a variable dielectric constant, and the antenna is resonant at a frequency responsive to the dielectric constant of the capacitor ferroelectric material. Typically, the capacitor includes a dielectric formed from a fixed constant dielectric, together with a ferroelectric dielectric with a variable dielectric constant. A bias voltage feed is used to apply a voltage to the capacitor ferroelectric dielectric. The ferroelectric dielectric has a dielectric constant that varies in response to the applied voltage.