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