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Investigation of Antenna Edge Treatments and Ground Plane Coupling Behavior
(2016-12-16)
Guided wave structures can perform as broadband antenna elements through the use of a gradual impedance transformation. The impedance match is typically created through gradual structural changes to match the impedance of ...
Investigation of Low-Power Antenna Reconfiguration Through Biasing of Magnetic Loads
(2017-05-12)
In modern RF systems, tunable devices are increasingly necessary to provide agility in crowded spectral environments. The antenna, as an integral part of any wireless system, must be capable of operating well at multiple ...
Ruggedized Feeding Techniques for Placement Insensitive Antennas
(2018-08-02)
Today's warfighter relies on extensive wireless technology to stay connected to allied forces and the battle theater. Communication equipment, IFF (identification friend-or-foe) identifiers, global positioning systems, ...
Structure-Independent Conformal Quasi-Isotropic Antennas for Small Unmanned Aircraft System Applications
(2017-12-15)
Communication systems for aircraft are often implemented through antennas that protrude from the airframe and contain radiation nulls - which have detrimental effects on the aerodynamics of the craft and its ability to ...
Antenna Synthesis Through Characteristic Modal Analysis for Small Unmanned Aerial System Applications
(2019-05-10)
Historically, antennas for airborne applications have been a separate class unto themselves. They have unique requirements for conformality, structural integrity, and long-range communication. Furthermore, the must ...
Limitations and evaluation of the linear assumption on antenna design
(2022-05-13)
A common assumption made by antenna engineers is to consider a system to be linear and time-invariant (LTI). This assumption is incredibly powerful and has enabled a century of advancements, but consequently has perhaps ...
Examination of Additively Manufactured Chokes for Size Reduction and Performance Improvement in RF and Microwave Applications
(2018-08-02)
For many RF and microwave applications, a balun is imperative to ensure the
proper performance of a balanced structure that is connected to an unbalanced
structure. Sleeve baluns are a common type of balun that are ...