Compact UHF/VHF Monopole Antennas for CubeSats Applications

Zhang, Xiang; Sun, Fu; Zhang, Guoxuan; Hou, Liming

doi:10.1109/access.2020.3008540

Cited by 21 publications

(8 citation statements)

References 12 publications

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“…There are various types of them such as switched type and reflection-type ones. Base station antennas often include dual polarized/crossed dipole linear or planar arrays, and to change the down tilt angle of the array antenna beam, a phase shifter is applied [21][22][23][24]. In high power, a high power phase shifter has to be used.…”

Section: High Power Feeding Network Designmentioning

confidence: 99%

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

Dastkhosh¹,

Naseh²,

Dardari³

et al. 2022

PIER C

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Cellular UHF (Ultra High Frequency) transceiver networks and base transceiver station antenna systems comprise high power phase shifters for changing and adjusting the phases or delays of high-power transmitting signals delivered to antenna elements. In this work, theoretical and practical adjustment methods of amplitudes and phases for electronic steering of a high power phased array antenna pattern are illustrated. In addition, a high power phase shifter with an asymmetric power divider is designed. The phases are changed and adjusted progressively, and thus the beam direction changes from −60 • to 60 • . The UHF phase shifter has been simulated with Advanced Design System (ADS) and CST STUDIO SUITE SPARK3D and measured. The simulations show that the designed and manufactured UHF phase shifter can also handle more than 20 kW and can be redesigned to reach up to more than 100 kW RF (Radio Frequency) power (microstrip/stripline structures) and can control/change phases of transmitting /receiving antennas. The phase shifter can be designed on any low loss substrate. By using this method in planar high power phased array antenna systems, 360 • planar beam tilting is also achievable.

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Section: High Power Feeding Network Designmentioning

confidence: 99%

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

Dastkhosh¹,

Naseh²,

Dardari³

et al. 2022

PIER C

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“…Whereas the earlier design was made on a single‐sided PCB of FR4 substrate having

ϵ_{r}

= 4.4, tan

δ

= 0.02, and thickness 1.54 mm with copper deposition of 20 microns, the bendable tag was made on a single‐sided polyimide substrate having

ϵ_{r}

= 3.5, tan

δ

= 0.008, and thickness 0.05 mm with copper deposition of 10 microns. As with Reference 34, a meander‐line technique 38 is used to increase the electrical length of the antenna and using nonuniform lines (track width and length) with smooth corners. The tag antenna was matched with an EPC global Class 1 second generation Higgs‐4 chip 37 having input impedance 21.55‐j191.45

Ω

at 866 MHz and capable for operation in the frequency range 830–960 MHz.…”

Section: Proposed Designmentioning

confidence: 99%

Bendable ultra‐high frequency radio‐frequency identification tag antenna for retail garments using nonuniform meandered lines

Kumar

Sharma

Zuazola

2021

Engineering Reports

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A bendable ultra‐high frequency (UHF) radio‐frequency identification (RFID) tag antenna using nonuniform meandered lines for retail garments in the textile industry is presented. Based on an earlier UHF RFID tag antenna using nonuniform meandered lines, the proposed tag is fully bendable and aimed to be embedded in retail garments for long‐life cycles. As a result, a relatively low cost, wideband, compactness, and good conjugate matching with good dipole‐like read range is presented. Results showed an antenna with a wide bandwidth of 900 MHz and a long read range of 10.1 m making the UHF RFID tag antenna using nonuniform meandered lines a potential candidate for retail garments in bendable applications of the textile industry. Simulations are corroborated by measurements and are in fairly agreement.

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“…At the VHF band and lower band of UHF, the monopole antenna or dipole antenna is often utilized to achieve omnidirectional radiation on the horizontal plane with linear polarization. In [1], two compact monopole antennas working at 149 MHz and 398 MHz are proposed by using meander-line and foldable structures. Das and Iyer [2] proposed a highly miniaturized 3-D spherical folded dipole antenna working at 515 MHz, which employs a spherical helix structure and hence has a very compact structure with a vertical size of only 1/175 of wavelength.…”

Section: Introductionmentioning

confidence: 99%

Integrated Design of Multimode and Multifrequency Miniaturized Handset Antenna at VHF/UHF Bands

Zhang

et al. 2023

International Journal of Antennas and Propagation

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This paper presents an integrated design of a multimode and multifrequency miniaturized handset antenna working at the lower band (0.24–0.7 GHz) with linear polarization and higher band (1.98–2.01 GHz and 2.17–2.20 GHz) with circular polarization simultaneously. At the higher band, the quadrifilar helix antenna (QHA) is utilized with each arm developed into two arms of different lengths and linearly tapered widths to realize double resonance and increase the bandwidth. Moreover, a helical stub behaving as a director is introduced to improve the antenna gain. At the lower band, the outer conductor of the QHA feedline and four QHA arms are designed to constitute a monopole antenna through proper feeding and introducing four quarter-wavelength short-circuit stubs. With this radiator-sharing technique, the QHA not only works at the higher band with a circular polarization pattern but can act as a monopole antenna working at the lower band with a linear polarization pattern simultaneously. As a result, the size of the antenna can be reduced remarkably. Finally, the proposed antenna is fabricated with a total length of 228 mm and a diameter of 15 mm. At the lower band, the measured S11 is below −8 dB, and the gain is larger than 0.5 dBi. At the higher band, the measured S11 and AR are better than −13 dB and 3 dB, respectively, and the gain within the zenith angle range of 0°−35° is greater than 2.5 dBi, which demonstrates better performance.

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Compact UHF/VHF Monopole Antennas for CubeSats Applications

Cited by 21 publications

References 12 publications

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

Bendable ultra‐high frequency radio‐frequency identification tag antenna for retail garments using nonuniform meandered lines

Integrated Design of Multimode and Multifrequency Miniaturized Handset Antenna at VHF/UHF Bands

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