Radio Antenna Engineering-Fig3-77

Autor:

Edmund A. Laport

Credit:

Retrieved from Edmund A. Laport, Radio Antenna Engineering, McGraw-Hill Publishing Co., New York, 1952 on David Platt's webpage for this book

Krótki link:

https://plwiki.pl/b/e7e92

źródło:

Wikimedia Commons

Wymiary:

3198 x 2346 Pixel (64445 Bytes)

Opis:

Figure 3.77: Horizontal rhombic antenna (common three-wire form). This is a directional wire antenna used on the MF and HF bands. It consists of one to three wires in a rhombus (diamond) shape, suspended high above the ground from poles or towers at the corners of the rhombus, with insulators. The antenna is fed through a balanced transmission line at one end of the rhombus, and terminated in a resistance at the other end. In the above rhombic the termination is not a resistor but a dissipative transmission line. The main lobes of the radiation pattern are off the sharp ends of the rhombus.

Licencja:

Public domain

Komentarz do licencji:

The copyright for this book Radio Antenna Engineering should have been renewed in 1980. A search of the US Copyright Office online database covering 1978 to the present shows no copyright renewal for that author name or title. Therefore the copyright was not renewed and the book is in the public domain. See David Platt's webpage for further copyright researches which confirm this.