EXPERIMENTAL STUDY OF INVERTED L-, T-, AND RELATED TRANSMISSION-LINE ANTENNAS

Technical Report · Tue Mar 01 04:00:00 EST 1960

OSTI ID:4142144

Prasad, S; King, R W.P.

An experimental study of invented L-, T-, and related transmission-line antennas is described. The impedances were measured for L-antennas of total electrical length BETA (h + l) equal to pi and pi /2 and for T-antennas of electrical length pi /2 (height plus one element of the top load). Other structures studied were antennas of two-, three-, and fourelement top loads. The apparent measured impedance was corrected for the coaxial line driving the antenna over a ground plane. For small heights, the antennas behaved like transmission lines over a ground plane. The capacitive end correction was used to correct end effects at the open end of the transmission-line antenna and approximate theoretical impedances were calculated for small heights which could not be measured experimentally. The transmissionline antennas studied were of three types: (1) the shuntdriven transmission line with open and closed ends, (2) the shunt-driven transmission line with two closed ends, and (3) the end-driven section of transmission line with a closed end. The capacitive and inductive end corrections were made. The impedance of the hairpin antenna was obtained experimentally. (auth)

• Research Organization: Sandia Corp., Albuquerque, N. Mex.
• NSA Number: NSA-14-013851
• OSTI ID: 4142144
• Report Number(s): SCTM-82-60(14)
• Country of Publication: United States
• Language: English

Related Subjects

ANTENNAS
CABLES
CAPACITORS
COMMUNICATIONS
EARTH
EFFICIENCY
ELECTRONIC EQUIPMENT
ENGINEERING AND EQUIPMENT
IMPEDANCE
INDUCTION
INTERACTIONS
MACHINE PARTS
MATHEMATICS
MEASURED VALUES
SURFACES
TRANSDUCERS