A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles

Bang, Jaehoon; Choi, Soon-Woo; Noh, Jaewoo; Lim, Joo-Young; Kim, Dong-Hyun; Kim, Dae-Oh; Ahn, Bierng-Chearl

doi:10.1155/2016/7570316

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…Hence, it is difficult or even impractical to align the feed antennas between the transmitter and the receiver. Although the aligning problem can be overcome by the dual circularly polarized feed technique [13], it is very costly and complicated to design. Whereas, the next order mode 𝑇 𝑀 01 has the circular symmetric field pattern as Figure 5.…”

Section: Single Mode Selection For Data Transmission In Cpt Applicationsmentioning

confidence: 99%

In-Pipe Wireless Communication for Underground Sampling and Testing

Nguyen¹,

Meratnia

et al. 2017

GLOBECOM 2017 - 2017 IEEE Global Communications Conference

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In this paper, we present an effective and low-cost wireless communication system for extremely long and narrow pipes that can replace the extant wire system in underground sensor network applications such as soil sampling and testing with the Cone Penetration Test (CPT), the most widely used underground sensor device. Different from existing in-pipe wireless techniques, we consider real-world pipelines that are very narrow and long. In particular, in our design data are first modulated at a commercial frequency and then converted to high frequency, between 14 − 15 GHz, to be transmitted along of the pipelines under the circular waveguide mode TM01. Especially, we design a cone-shaped antenna to overcome the aligning problem of feeds between the transmitter and receiver. To evaluate the applicability and efficiency of our design, we conduct realistic simulations as well as experiments with real prototypes. The results of experiments are consistent with our theoretical design and simulations and show that our proposed wireless system can transfer sensory data up to 20 m in narrow CPT pipes with a diameter of 17 mm when using the LoRa modulation with a transmitting power of 1 W, whereas existing underground radio techniques can transfer data from a depth of 2 m at maximum in the same condition. In our approach, it is also possible to add repeaters to extend the communication range when needed.

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Section: Single Mode Selection For Data Transmission In Cpt Applicationsmentioning

confidence: 99%

In-Pipe Wireless Communication for Underground Sampling and Testing

Nguyen¹,

Meratnia

et al. 2017

GLOBECOM 2017 - 2017 IEEE Global Communications Conference

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Design of a Crossed Dipole for Telemetry Tracking Feeds

Park¹,

Noh²,

Ahn³

2018

jkiit

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Substrate Integrated Waveguide Based Cavity-Backed Circularly-Polarized Antenna for Satellite Communication

Choubey

Zhang

et al. 2023

Electronics

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This article presents the methodology to design a single-fed circularly-polarized antenna with low front-to-back ratio (FBR). A circular-patch (CPatch) antenna has been incorporated within the rectangular-cavity, made of, substrate integrated waveguide (SIW). The size of the CPatch and the SIW cavity has been chosen appropriately, in a manner, that the both resonators dominant mode coincide. This arrangement has been adopted to realize the basic radiating unit with no surface-wave and the significantly lower FBR. The circularly polarization has been excited through shorting the periphery of CPatch radiator to the “one of the two metallic grounds” of this SIW cavity. The patch periphery has been shorted from two distinct points, separated by the quarter wavelength—Over center frequency of working band. The antenna has been designed and manufactured over Rogers RT/Duroid 5880 substrate with dielectric constant (εr) of 2.2, loss-tangent (tan δ, at 10 GHz) of 0.0009, and substrate height of 0.508 mm. Southwest® end launcher (SEL) along with SIW-to-GCPW (Grounded Co-Planar Waveguide) transition has been used here to facilitate the measurement of antenna’s electrical and the radiation performance. The designed antenna’s impedance bandwidth and the 3 dB axial-ratio (AR) bandwidth is 9.5% and the 2.3%, respectively. It’s simulated and the measured peak gain, within working frequency band, is higher than 8.5dBic. The proposed antenna’s FBR is antenna is significantly lower than the conventional circularly-polarized antennas. Through comparative study, with work in open literature, it has been demonstrated that the designed antenna, based on proposed method, can a potential candidate for applicable in satellite and in the other spaceborne communication system’s module—At ground and in the space station.

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A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles

Cited by 3 publications

References 20 publications

In-Pipe Wireless Communication for Underground Sampling and Testing

In-Pipe Wireless Communication for Underground Sampling and Testing

Design of a Crossed Dipole for Telemetry Tracking Feeds

Substrate Integrated Waveguide Based Cavity-Backed Circularly-Polarized Antenna for Satellite Communication

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