Comparison of the designed filter tuning circuit
to works of other authors 1 lentele.
Its integrated antenna tuning circuit
allows the module to be used with a range of implantable antennas (nominal antenna impedance is 100+j150 ohms).
Before the development and adoption of RFFE, the standard control was SPI (Serial Peripheral Interface), which required customers to modify their drivers to support the antenna tuning circuit
The solid-state devices can be used in series or shunt configurations to support a variety of tuning circuit
The resonator is mounted directly above the tuning circuit
and is supported by a low loss spacer.
Knowledge of the high frequency model of the investigated diode allowed a tuning circuit
configuration to be devised.
An isolator was not required at the output of the 46 to 64 GHz VCO that was downconverted since the tuning circuit
was isolated from the load by the high pass filter, waveguide section cutoff to fundamental, and by the intrinsic isolation provided by the second harmonic frequency generating mechanism in the Gunn diode.