DEVICES AND METHODS RELATED TO LOW LOSS IMPEDANCE TRANSFORMERS FOR RADIO-FREQUENCY APPLICATIONS

摘要

Disclosed are devices and methods related to low loss impedance transformers for radio-frequency (RF) applications. In some embodiments, an impedance matching device can include a primary metal trace and a secondary metal trace. Such metal traces can be interconnected to form an autotransformer with the primary metal trace and the secondary metal trace being in respective planes separated by a selected distance. Such an autotransformer can be utilized to facilitate impedance matching of an amplified RF signal from a power amplifier (PA). In some embodiments, the impedance matching device can be implemented as an integrated passive device (IPD). Such an IPD can be configured to allow stacking of another component on the IPD to yield a number of desirable features such as reduction in module size.