摘要:
A low cost highly integrated method of fabricating a heat sink on the backside of a power semiconductor device maintains device performance, improves thermal transfer, and enables reliable planar connections without having to dice the wafer or package the discrete device-heat sink assembly. An etch stop layer is formed between the wafer and the frontside power devices to protect them during backside processing and to reduce the contact resistance between the device and its heat sink. The heat sinks are formed by thinning, patterning and then plating the wafer in such a manner that the devices can be released without dicing. The heat sinks are preferably oversized so that a vacuum tool can grasp the heat sink from above without damaging the device and then compression bond the heat sink onto a planar microstrip circuit assembly, which is designed and packaged to facilitate easy replacement of failed devices.
摘要:
A low cost highly integrated method of fabricating a heat sink on the backside of a power semiconductor device maintains device performance, improves thermal transfer, and enables reliable planar connections without having to dice the wafer or package the discrete device-heat sink assembly. An etch stop layer is formed between the wafer and the frontside power devices to protect them during backside processing and to reduce the contact resistance between the device and its heat sink. The heat sinks are formed by thinning, patterning and then plating the wafer in such a manner that the devices can be released without dicing. The heat sinks are preferably oversized so that a vacuum tool can grasp the heat sink from above without damaging the device and then compression bond the heat sink onto a planar microstrip circuit assembly, which is designed and packaged to facilitate easy replacement of failed devices.
摘要:
Embodiments of wireless antenna array systems to achieve three-dimensional beam coverage are described herein. Other embodiments may be described and claimed.
摘要:
A device and a method for manufacturing it are disclosed. The device contains a plurality of transistors, a plurality of transmission mediums connected to the transistors; and a substrate having a first portion supporting the transistors and the transmission mediums thereon, and further having a plurality of discrete second portions extending from the first portion. The method disclosed teaches how to manufacture the device.
摘要:
A wireless device using natural higher order harmonics on multi-band reconfigurable antenna designs where the antenna higher order resonance is used to build a multi-band to multi-band frequency reconfigurable antenna.
摘要:
Embodiments of wireless antenna array systems to achieve three-dimensional beam coverage are described herein. Other embodiments may be described and claimed.
摘要:
Low cost millimeter wave imagers using two-dimensional focal plane arrays based on backward tunneling diode (BTD) detectors. Two-dimensional focal arrays of BTD detectors are used as focal plane arrays in imagers. High responsivity of BTD detectors near zero bias results in low noise detectors that alleviate the need for expensive and heat generating low noise amplifiers or Dicke switches in the imager. BTD detectors are installed on a printed circuit board using flip chip packaging technology and horn antennas direct the waves toward the flip chip including the BTD detectors. The assembly of the horn antennas, flip chips, printed circuit board substrate, and interconnects together work as an imaging sensor. Corrugated surfaces of the components prevent re-radiation of the incident waves.
摘要:
Disclosed are integration approaches for mm-wave planar phased array type architectures using multilayer substrate technologies. For instance, an apparatus may include a plurality of substrate layers, an integrated circuit, and a connector module. The plurality of substrate layers includes a first substrate layer having one or more phased array elements. The integrated circuit exchange one or more radio frequency (RF) signals (e.g., mm-wave signals) with the one or more phased array elements. The connector module exchange further signals with the integrated circuit that correspond to the one or more RF signals. For example, these further signals may be baseband or intermediate frequency (IF) signals.
摘要:
A housing for an integrated circuit, comprising a base for securing a substrate with an integrated circuit thereon, a top cover, and a body with a cavity for receiving the substrate and at least a portion of the top cover therein to form an enclosed housing therewith, the body including at least one connector extending from within the cavity to outside of the body and configured to contact the integrated circuit when the substrate is in the cavity.
摘要:
Systems and methods of interconnecting devices may include a connector assembly having a substrate, a set of input/output (IO) contacts, an antenna structure and transceiver logic. In one example, the transceiver logic may process one or more IO signals associated with the antenna structure and process one or more IO signals associated with the set of IO contacts.