Characterization of balanced transmission line by microwave techniques

Author

Teal, Paul D. ; Scott, Neil L. ; Vaughan, Rodney G.

Author_Institution

Ind. Res. Ltd., Lower Hutt, New Zealand

Volume

46

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

2148

Lastpage

2151

Abstract

This paper presents a method of experimentally characterizing a balanced transmission line using microwave techniques. An unbalanced measurement instrument and the transmission line under test must he connected by a balun, and the effect of the balun must be removed from the measured data. Deembedding techniques are discussed briefly, and several baluns are evaluated. Two methods of performing the measurement are presented. The first uses a one-port measurement where known loads are measured from the end of various lengths of transmission line. The second uses two-port measurements with different transmission-line lengths, and is more effective for measurement of line loss. Experimental results are presented for 2 mm toughened plastic sheath (TPS) “twin and earth” power cable for the range of 0.3-300 MHz

Keywords

UHF measurement; baluns; electric impedance measurement; loss measurement; microwave measurement; power cable testing; power transmission lines; 0.3 to 300 MHz; balanced transmission line; balun connection; characterization; deembedding techniques; line loss measurement; microwave techniques; one-port measurement; two-port measurements; unbalanced measurement instrument; Impedance matching; Instruments; Length measurement; Loss measurement; Microwave theory and techniques; Performance evaluation; Power transmission lines; Testing; Transmission line measurements; Transmission lines;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.739297

Filename

739297