AVX Corp. has expanded its thin-film Accu-P
Series capacitors to provide ultra-tight capacitance tolerance versions suitable for antenna matching in cellular handsets.
The new Accu-P Series capacitors are designed with high purity electrodes
and a low-K dielectric to provide low and repeatable ESR values, as well as
high breakdown voltage, high insulation resistance, and low losses at
frequencies up to 40GHz. The design also features tight dimensional control for uniform,
stable and repeatable frequency characteristics.
Antenna efficiency quantifies the resistive loss of the antenna in terms of the
proportion of power that is actually radiated, versus the power that is first
delivered to it. In order to increase efficiency, it is necessary to match the
antenna to the source resistance. AVX provides tight tolerance capacitors
and inductors with any requested standard and non-standard value specifically
for implementing the matching circuit. Using the closest standard parts instead
of the non-standard values will significantly change the matching quality.
Special ultra-tight tolerance antenna matching engineering kits are available
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.