1994
DOI: 10.1109/8.318663
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Input impedance, radiation pattern, and radar cross section of spiral antennas using FDTD

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Cited by 39 publications
(16 citation statements)
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“…When the two wires are fed at the inner spiral-wire ends, the antenna radiates circularly polarized (CP) beams on both sides of the antenna plane. To radiate the CP beam only on one side, the antenna is backed by a cavity [4][5][6] or a plane reflector [7][8][9]. In each antenna configuration, a balun circuit is required to achieve antiphase excitation for the CP radiation in the direction normal to the antenna plane (axial direction) [2,3].…”
Section: Introductionmentioning
confidence: 99%
“…When the two wires are fed at the inner spiral-wire ends, the antenna radiates circularly polarized (CP) beams on both sides of the antenna plane. To radiate the CP beam only on one side, the antenna is backed by a cavity [4][5][6] or a plane reflector [7][8][9]. In each antenna configuration, a balun circuit is required to achieve antiphase excitation for the CP radiation in the direction normal to the antenna plane (axial direction) [2,3].…”
Section: Introductionmentioning
confidence: 99%
“…Since the introduction of the (Archimedean) spiral antenna by E. M. Turner [11] and its identification by V. H. Rumsey [12] as a structure capable of frequency-independent operation, a number of authors [13][14][15][16][17][18][19] have analyzed the spiral antenna. These theoretical analyses were complimented by numerical modeling based on the Method of Moments [20][21][22][23][24][25] and the FD-TD methods [26].…”
Section: Introductionmentioning
confidence: 99%
“…It is also has some disadvantages such as bidirectional radiation, larger size, and input impedance is not equal to 50 Ω [8]. Many researchers have done many experiments to enhance the spiral antenna's radiation performances and very little was found on the input impedance [9][10][11]. This paper proposed a method to enhance the ASA's radiation performance of input impedance reduction.…”
Section: Introductionmentioning
confidence: 99%