Transcription of The Broadband Double-Bazooka Antenna — How Broad Is It?
{{id}} {{{paragraph}}}
Example: dental hygienist
The Broadband Double-Bazooka Antenna — How Broad Is It?
The Broadband Double-Bazooka Antenna How Broad Is It? 18-1(Adapted from Technical Correspon-dence, QST, September 1976)Sec IntroductionThe increasing interest in usingthe coaxial dipole (sometimescalled the Double-Bazooka an-tenna) for its questionable in-creased bandwidth is disturbing, espe-cially in view of the results of an analysisand some experiments I performed andpublished several years ago. The Antenna ,with its inner section of coax and its endsections of open-wire transmission line(ladder line), was popularized for amateuruse by Charles Whysall, W8TV, with anarticle in July 1968 QST (Ref 29). It ap-pears in several editions of The ARRLH andbook, although it has never ap-peared in The ARRL Antenna Book. Theresults of my analysis and experimentsindicate that the coaxial stubs in the co-axial-dipole configuration in general useby amateurs cannot provide the degree ofbandwidth that users of the coaxial dipoleappear to be measuring.
The Broadband Double-Bazooka Antenna — How Broad Is It? 18-3 Unfortunately, the reactance pro-vided by the stubs in the coaxial dipole is in parallel with the dipole terminal im- pedance, not in series. And what a differ-
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: