English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This paper presents a wide-band multi-level switched mode class-E/F<sub>23</sub> Power Amplifier (PA) with a reconfigurable power stage core transistor and a load with reconfigurable reactance compensation part. An Automatic Calibration Scheme (ACS) is proposed to perform the core and load reconfiguration based on a proposed algorithm. The PA is formed by a class-D driver amplifier, the switched mode cascaded reconfigurable power stage, the reconfigurable class-E/F23 load, the ACS and its algorithm, and the matching network at the end of the load before the antenna. The proposed PA is implemented using a 130 nm CMOS technology. The wideband PA operates in the frequency range from 470 MHz to 690 MHz for a TV White Space (TVWS) application with 220 MHz bandwidth. Even though reaching a high maximum Power Added Efficiency (PAEmax) for the design with low output powers is challenging a PAEmax of 32&#x0025; for a 10 dBm output power level from a low supply voltage of 2.2 V. The proposed ACS provides an output power with a flatness around 0.6 dB which shows 57&#x0025; improvement in compare with the structure without the ACS. The PA achieved a selectable multi-level output power from 10 dBm to 14 dBm over the 220 MHz bandwidth.

ieee access

A Wideband Multilevel Reconfigurable Class E/F<sub>23</sub> Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm

A Wideband Multilevel Reconfigurable Class E/F23 Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm

A Wideband Multilevel Reconfigurable Class E/F₂₃ Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm