A Package Integratable Six Port Reflectometer for RF Power Devices

Semiconductor power devices have a growing popularity in industrial, scientific and medical (ISM) band applications, such as microwave-heating, drying and plasma generation. A distinguishable property of these applications is the relentless pursuit of reliability, ruggedness, or the ability to withstand a mismatched loading condition without...

A Package-Integratable Six-Port Reflectometer for RF Power Devices

Semiconductor power devices have a growing popularity in industrial, scientific and medical (ISM) band applications, such as microwave-heating, drying and plasma generation. A distinguishable property of these applications is the relentless pursuit of reliability, ruggedness, or the ability to withstand a mismatched loading condition without...

Wideband High Power Amplifier Design

This thesis aims for high power wideband amplifiers suitable for base station instrumentation purposes. A power combing topology is introduced, not only to achieve high power but also good input and output matching. Two kinds of broadband 3-dB quadrature couplers, which are important components in the power combing topology, are designed and...

Wideband Class B Power Amplifier Topologies

Wireless communication has encountered a tremendous growth over the past few decades. The increased plurality in communication standards, characterized by the use of different operating frequencies and data rates, has translated into very tough specifications for the broadcasting base station power amplifier, in terms of efficiency, bandwidth...

A 60W Compact Highly Efficient Wideband Class-E Power Amplifier

With the rapid growth of wireless communication systems, there is more and more demand for radio frequency power amplifiers (RFPAs) in base stations to be power-efficient so as to reduce the cooling and electrical power cost. Besides the efficient requirement, wide-band working frequency and compact PCB size are also attractive for cutting more...

A high-efficiency switch-mode amplitude modulator for class E power amplifiers in nano-satellites

This thesis describes the design, simulation and implementation of a supply modulator to be used in a VHF power amplifier on the Delfi-n3Xt nano-satellite. First, a set of specifications is defined that describe the required functionality. These are derived from earlier work on related systems and confirmed through discussions within the project...

Chireix's / LINC Power Amplifier for Base Station Applications Using GaN Devices with Load Compensation

New generations wireless communication systems require linear efficient RF power amplifiers for higher data transmission rates. However, conventional RF power amplifiers are normally designed for peak efficiency under maximum output power condition. Consequently, when the power is backed-off from its maximum point, the amplifier efficiency drops...