Qorvo Us, Inc.

Other

Subrahmanyam V Pilla

Michael Roberg

Yongjie Cui

Yu Cao

John Hitt

Tso-Min Chou

Srinivas Kadiyala

A method for manufacturing a self-biased circulator includes cooling a nanocomposite material to a magnetization temperature below 200 K, applying an external magnetic field to the nanocomposite material to form a magnetic nanocomposite material, providing the magnetic nanocomposite material in a semiconductor substrate, and providing one or more metal layers over the magnetic nanocomposite material to form a circulator. By cooling and then magnetizing the nanocomposite material, a performance of the circulator may be significantly improved.

Method for manufacturing circulators with improved performance

Enhanced air core transmission lines and transformers are disclosed. A transmission line or transformer is disposed on a dielectric substrate, with a first planar conductor on the dielectric substrate and a second planar conductor suspended above the first planar conductor. A set of support posts suspends the second planar conductor above the first planar conductor. Thermal performance of the transmission line or transformer is improved by having each of the set of support posts include a width which exceeds any gap between support posts. In some examples, openings are formed in the second planar conductor and may facilitate etching or other processes of forming the transmission line or transformer.

Enhanced air core transmission lines and transformers

The present disclosure relates to a vertical gallium-nitride (GaN) power field-effect transistor (FET) with a field plate structure. The vertical GaN power FET includes a conductive substrate, a drift region, a field plate structure, a channel region with tapered side walls, a gate dielectric region, a gate contact, a drain contact and source contacts. The field plate structure includes a lower layer formed of pi p-type graded AlGaN and a upper layer formed of p-type GaN. The field plate structure utilizes the charge separation at the interface between the lower layer and the upper layer to achieve high breakdown voltage.

Vertical gallium nitride power field-effect transistor with a field plate structure

A viewing system configured to combine multiple spectral images of a scene, the system includes a spectral beam separator configured to split an incoming beam of radiation into a first and a second beam of radiation, the first beam of radiation including radiations substantially in a first spectral band and the second beam of radiation including radiations substantially in a second spectral band; an image intensifier configured to intensify the second beam of radiation, the image intensifier including a photocathode configured to produce a flux of photoelectrons with substantially increased efficiency when exposed to the second beam of radiation, the photocathode constructed and arranged to substantially absorb all the radiations in the second beam of radiation; a current amplifier configured to amplify the flux of photoelectrons; and a display system configured to display an image of the scene in the second spectral band based on the amplified flux of electrons simultaneously with an image of the scene in the first spectral band.

Growing community of inventors

Plano, TX, United States of America

Subrahmanyam V Pilla