Absolute Gain Measurements for Horn Antennas
Abstract
A detailed discussion is presented of absolute gain measurements by the insertion-loss method (also known as the 'two-antenna' or 'three-antenna' method). The discussion emphasizes error analysis, electrical mismatch, near-zone corrections, swept-frequency gain measurements, and techniques for experimentally reducing the effects of multipath interference. Some simple terms, concepts, and formulas are presented that are useful for the design and evaluation of antenna or field strength measurements when multipath interference is involved. It is concluded that swept-frequency horn-gain measurement with uncertainty limits of less than plus or minus .1 dB can be made on small indoor ranges. Examples of horn-gain measurements are included.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1968
- Accession Number
- AD0846204
Entities
People
- Ronald R. Bowman
Organizations
- National Institute of Standards and Technology