A study on conical spiral antennas for UHF SATCOM terminals

Zaghloul, Amir I.; Anthony, Theodore K.; Coburn, William O.

doi:10.1109/aps.2012.6349035

Cited by 3 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The figure also shows the relaized gain level for RHCP in the back lobe direction (in red). The good front-toback ratio results from choosing the appropriate angle for the conical shape of the antenna surface [7]. To prove the concept, a planar spiral antenna was fabricated and tested with direct coaxial connection to the spiral input.…”

Section: Theoretical Explanationmentioning

confidence: 99%

“…A broad frequency band is required for pulse radiation systems [6], hence the need for a broadband spiral antenna. Conical spiral antennas have been studied for satellite terminals at UHF with optimum conical angle for the highest gain and highest front to back ratio in the radiation pattern [7]. Conventional designs of spiral antennas use baluns that connect the input of the spiral to the feeding coaxial cable.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Matching two-arm spiral impedance without balun

Anthony

Zaghloul

2014

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)

Self Cite

View full text Add to dashboard Cite

Spiral antennas can be designed to cover decades of bandwidth (e.g. 350-8350 MHz). Connecting the antenna directly to the coaxial cable without a balun would reduce fabrication costs without sacrificing realized gain. This paper shows how two-arm spiral antennas can be designed to have a broadband impedance close to 50 Ohms, rather than the traditional 180 Ohms, without the need to make and attach a balun.

show abstract

Section: Theoretical Explanationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%