Sökning: "subharmonic"
Visar resultat 1 - 5 av 23 avhandlingar innehållade ordet subharmonic.
1. Tunable superconducting resonators, subharmonic oscillations and manipulation of microwaves
Sammanfattning : In this thesis I present different types of manipulations of microwave fields using tunable superconducting resonators. A resonator is made tunable by adding one or more superconducting quantum interference devices, SQUIDs. The SQUID consists of a superconducting loop with two Josephson junctions and acts as a tunable nonlinear inductor. LÄS MER
2. Heterostructure Field Effect Transistors and Millimeter Wave Integrated Circuits
Sammanfattning : This thesis deals with the research and development of HFETs and HFET based circuits. One of the main aims of the work presented in this thesis has been to develop processes to fabricate state of the art devices and circuits. LÄS MER
3. Fabrication, Characterisation and Modelling of Subharmonic Graphene FET Mixers
Sammanfattning : Graphene has exceptional carrier transport properties which makes it a promising material for future nanoelectronics. The high carrier mobility along with the ability to switch between n- and p-channel in a graphene field effect transistor (G-FET) truly distinguishes it from other types of FET technologies and enables completely new high frequency devices. LÄS MER
4. Advanced Schottky Diode Receiver Front-Ends for Terahertz Applications
Sammanfattning : This thesis treats the development of high frequency circuits for increased functionality of terahertz receiver front-ends based on room temperature Schottky diode technology. This includes the study of novel circuit integration schemes, packaging concepts as well as new measurement and characterisation techniques. LÄS MER
5. Subharmonic Sideband Separating Schottky Diode Mixer for Submillimetre Wave Applications
Sammanfattning : .... LÄS MER