Ultra-wideband circular polarized microstrip Archimedean spiral antenna loaded with chip-resistor

Kinezos, C.; Ungvichian, V.

doi:10.1109/aps.2003.1219922

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…An ultra-wideband (UWB) right hand circularly polarised microstrip Archimedean spiral antenna operating with a chipresistor load has been presented by Kinezos et al [11]. Kramer et al have miniaturised an UWB spiral antenna using a combination of dielectric and inductive loading [12].…”

Section: Introductionmentioning

confidence: 98%

Design of a compact wearable single-arm spiral antenna for satellite communications

Ur-Rehman

Abbasi

Kamran

et al. 2013

2013 IEEE International RF and Microwave Conference (RFM)

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Spiral antennas are a popular choice for satellite communication systems due to their small size, broadband, circular polarisation and high gain. This paper presents a novel design of an Archimedean single-arm spiral antenna fed through a coaxial feed for operation in X and Ku frequency bands covering 8 GHz to 18 GHz frequencies. The antenna has very good impedance matching (better than -10 dB) throughout the frequency range, good right hand circular polarisation (≤3 dB) and offers a maximum peak gain of 9.1 dBi. The radiation characteristics, efficiency, gain and compact size make this antenna suitable for rigid, mobile and airborne terminals. The compact size also makes the proposed antenna good candidate for wearable/poartable wireless communication devices.

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Section: Introductionmentioning

confidence: 98%

Design of a compact wearable single-arm spiral antenna for satellite communications

Ur-Rehman

Abbasi

Kamran

et al. 2013

2013 IEEE International RF and Microwave Conference (RFM)

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show abstract

“…When the frequency is too low to allow a half-wavelength of phase shift on the spiral, the input impedance becomes very small and the antenna is no longer matched. To extend the bandwidth to lower frequencies, some techniques involving resistive elements have been used to attenuate the waves, which would otherwise be reflected at the end of the spiral [2][3]. However, resistive loading can lower the radiation efficiency due to the power dissipated from the lossy elements and introduce unwanted noise into the system.…”

Section: Introductionmentioning

confidence: 98%

Two-Arm Archimedean Spiral with Filter-Based Reactive Loading

Zhang

Bernhard

2006

2006 IEEE Antennas and Propagation Society International Symposium

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A new technique to increase the operating bandwidth of a two-arm Archimedean spiral antenna is presented in this paper. Unlike other conventional solutions, including absorbent cavity backing and resistive loading, this method incorporates the concept of low-pass filtering with the two-wire transmission line behavior of the spiral antenna. The reactive loading from the integrated low-pass filter design improves the impedance match at lower frequencies providing a greater bandwidth than the basic spiral design.

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“…Absorbing materials, such as wave absorbers or magnetic materials with magnetic loss tangents have effectively worked for restoring wideband radiation characteristics [2] [3] [4]. A spiral antenna loaded with a chip-resistor also improves wideband radiation characteristics [5]. A modified spiral arm, such as a zigzag, a meander line, or inductive loading, achieves good radiation characteristics [6] [7] [8].…”

Section: Introductionmentioning

confidence: 99%

A two-arm Archimedean spiral antenna with bent ends

Tanabe

Maeda

Masuda

2012

2012 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)

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A two-arm Archimedean spiral antenna with bent ends is analyzed. The arms are bent at the end and connected to the neighboring arm. The outer circumference of the spiral antenna is chosen to be one-wavelength at the lower operating frequency. The analysis is performed using the method of moment. First, we analyze current distribution on the spiral antenna. It is shown that the current smoothly flows from the arm end to the neighboring arm through the bent end. Therefore, the reflected current on the end of the spiral arms reduces at lower operating frequencies. Subsequently, radiation characteristics are analyzed. Good axial ratio is obtained at lower frequency bands. The antenna gain also improves at lower frequency bands. It is concluded that simply bending and connecting the ends of the arms greatly contributes to the size reduction of the spiral antenna.

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Ultra-wideband circular polarized microstrip Archimedean spiral antenna loaded with chip-resistor

Cited by 6 publications

References 3 publications

Design of a compact wearable single-arm spiral antenna for satellite communications

Design of a compact wearable single-arm spiral antenna for satellite communications

Two-Arm Archimedean Spiral with Filter-Based Reactive Loading

A two-arm Archimedean spiral antenna with bent ends

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