Analysis of Pressurized Radome Enclosures

By Myron D. Fanton, PE

Enclosures are discussed for the protection of antenna equipment in extreme environments.

Antenna Contributions to Amplitude and Phase Variation Across a Broadcast Channel

By Myron D. Fanton, PE

Antenna amplitude and phase patterns, differential amplitude, differential phase, and group-delay are compared for end-fed and center-fed array configurations.

Array Antenna Pattern Measurement Techniques

By Myron D. Fanton, PE

Antenna patterns are measured using two independent methods and compared. Excellent agreement between far-field measurement and measurements from anechoic chamber and nearfield techniques.

Analysis of Antenna Beam-tilt and Broadcast Coverage

By Myron D. Fanton, PE

Antenna beam tilt affects areas covered by strong signals. Improvements greater than 10dB are realized using greater beamtilts offered in end-fed arrays.

Waveguide for TV Broadcast

By Myron D. Fanton, PE

Properties of circular waveguide are discussed with application to UHF TV broadcast systems. Mode filtering pins are introduced to eliminate cross-polar and higher order modes.

Slotted Coaxial Arrays Provide Lightweight, Economical Antenna Alternatives to Panel Arrays

By Myron D. Fanton, PE

Antenna patterns and reliability of UHF slot array and panel array antennas are compared.

Analysis and Measurement of RF System Reflections and DTV Transmission

By Myron D. Fanton, PE

Terrestrial digital television (DTV) broadcast employs complex transmission facilities composed of filters, diplexers, transmission line components, and antennas. The reflections introduced by these components are minimized by broadband design methods, and the nature of the total reflection as these components are combined into a system is developed. The radio frequency (RF) transmission line, immitance, and network parameters used to characterize these systems (i.e., voltage standing wave ratio or VSWR) are related to key DTV performance parameters.

Transmission Line for Broadcast Applications

By Myron D. Fanton, PE

The major design criteria for standard broadcast transmission lines and their correlation to published specifications are detailed. Technical performance and applications for DTV are outlined.

Analysis of Antenna Climbing Equipment

By Myron D. Fanton, PE

Antenna climbing systems are compared. Dedicated, separate climbing ladders are found to have superior safety and reliability characteristics.

Antenna Pattern and Coverage Optimization

By Myron D. Fanton, PE

Antenna patterns of end-fed and center-fed antenna arrays are compared. Coverage improvements are produced by end-fed array elevation patterns.

Analysis of Dual-Channel Broadcast Antennas

By Myron D. Fanton, PE

The design concept is discussed for slotted UHF antennas that allows the combining of a high power NTSC channel with an adjacent DTV channel assignment using a single transmission line and antenna.

Analysis of Antenna Null-fill and Broadcast Coverage

By Myron D. Fanton, PE

Antenna pattern characteristics of end-fed and center-fed arrays are discussed. End-fed arrays are found to have improved null-fill and coverage.

Analysis of Smooth Patterns and Broadcast Coverag

By Myron D. Fanton, PE

Antenna pattern characteristics of side-lobe level and null-fill are compared. The application of smooth, null free patterns is discussed.