Dual Circularly Polarized Slot Antenna with Novel Isolator

Chaudhuri, Sumantra; Kshetrimayum, Rakhesh Singh; Sonkar, Ramesh Kumar; Mishra, Darpan

doi:10.1109/piers-spring46901.2019.9017590

Cited by 1 publication

(2 citation statements)

References 5 publications

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“…Microstrip antennas are quick and cheap to manufacture and design because of this simple 2D geometry. They are beneficial at high frequencies because the short wavelengths mean that the size of the antenna is usually compact [15].…”

Section: Patch Antennasmentioning

confidence: 99%

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Adaptable Electrically Steerable Antenna Array with Diverse Switchable Polarization

Labossiere¹

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Adaptability is essential for antenna systems, especially those operating in harsh or unpredictable environments. Adaptable electrically steerable antennas (AESA) provide this flexibility. AESA use in radar systems is expanding due to new technologies that enable higher power and more miniaturized implementations. Polarization diversity is another way of adding adaptability to radar systems.System-level analysis of a typical radar system was performed to determine the specifications for a series of 4x4 switchable polarization AESA arrays meant to operate from 9.4 to 9.5 GHz. These arrays were designed on a multilayer Rogers Duroid PCB.Sub-components such as a microstrip feeding network, patch antennas, switches and hybrid couplers were integrated on the same PCB utilizing both sides of the board.Simple 4x4 linear and 4x4 circular polarized arrays were designed and fabricated on this chosen package. These single-polarization arrays were compacted into a single lowprofile PCB that measures 2.5x2.5 inches. The measurements of both single-polarization arrays closely matched the simulated results, which helped correct issues with the design process before adding more polarization states. Measurements show that these modularly scalable 2.5x2.5-inch PCBs can achieve a gain of between 12 and 21 dB depending on how many boards are tiled together.A technique for increasing the bandwidth of a single patch antenna through resistive loading was also explored. Using commercially packaged resistors to load a single patch resulted in a bandwidth increase of 400 MHz.Once simple single-polarization arrays were verified, two switchable polarization arrays, one linear and one circular, were designed and simulated. These switchable

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Section: Patch Antennasmentioning

confidence: 99%

“…Lower values of εr will increase the radiated power via the fringing fields at the patch edges. Therefore, it is recommended to select a substrate that has a low εr and tanδ with the thickness adjusted to get the desired bandwidth [15].…”

Section: Patch Antennasmentioning

confidence: 99%

Adaptable Electrically Steerable Antenna Array with Diverse Switchable Polarization

Labossiere¹

View full text Add to dashboard Cite

show abstract

Dual Circularly Polarized Slot Antenna with Novel Isolator

Cited by 1 publication

References 5 publications

Adaptable Electrically Steerable Antenna Array with Diverse Switchable Polarization

Adaptable Electrically Steerable Antenna Array with Diverse Switchable Polarization

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