# Accession Number:

## AD0262087

# Title:

## A STUDY OF THE BICONICAL ANTENNA

# Descriptive Note:

# Corporate Author:

## MICHIGAN UNIV ANN ARBOR COLL OF ENGINEERING

# Personal Author(s):

# Report Date:

## 1961-05-01

# Pagination or Media Count:

## 1.0

# Abstract:

The problem of finding the input impedance to a biconical antenna presented considerable difficulty. The theory of the biconical antenna, particularly the process of mode matching, is examined and several interesting observations are made which lead to two methods, one for thin cones and one for thick cones, for obtaining the exterior mode coefficients. A further investigation reveals that for arbitrary cones a finite set of preferred modes exists which behave similarly to the modes of infinitesimally thin cones. From this a method is developed which approximates each interior mode coefficient by a finite number of exterior modes, called the subset. The terms in this finite subset are then shown to depend on the solution of a finite matrix which is of the same order as the number of terms in the subset. Finally, any exterior mode coefficient is determined from an expression which relates this coefficient to all interior modes. Author