PDF4PRO ⚡AMP

Modern search engine that looking for books and documents around the web

Example: stock market

4-Square Antenna in theory and practice - RemoteQTH.com

1 4-Square Antenna in theory and practice Observations and experiences of DF6QV June 2014 2 Preface A couple of years ago I became interested in 4-Square -antennas. It is an Antenna system which, as the name suggests, consists of 4 radiators, a coupler, phasing-lines, as well as a radial or ground system. The coupler is the core of the system. It distributes the output power to the radiators with proper amplitudes and phases. This article will firstly discuss the components of this Antenna system. Afterwards the influence of ground conditions and distance between the elements is shown. Different couplers will be analyzed using the simulation program LTSpice by Linear Technologies. The results, referring to the splitting of power, phasing and bandwidth are displayed in diagrams. Finally some photos hint at the practical construction of 4-Square . I d like to express my thanks to DJ2YA for his competent support. My further thanks go to the many Oms who have enabled me to gain these experiences.

generated by coaxial cables of appropriate length, impedance matching is done by λ/4-transformers. The principle is presented in Fig. 1.10. Fig. 1.11 shows the "harness" that is required for the proper phases and impedances in the array. The figures are taken from QST, March 1965.

Tags:

  Practices, Square, Theory, Cable, Antenna, Coaxial, Coaxial cable, 4 square antenna in theory and practice

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Spam in document Broken preview Other abuse

Transcription of 4-Square Antenna in theory and practice - RemoteQTH.com

Related search queries