Compact microstrip-T coupled patch antenna for dual polarisation and active antenna applications

Kurup, Dhanesh G.; Rydberg, Anders; Himdi, Mohamed

doi:10.1049/el:20020866

Cited by 31 publications

(13 citation statements)

References 7 publications

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“…The T junctions transform the high radiation resistance of the patch to lower impedance [5]. The microstrip Ts have DC isolation between them; there is no need for capacitors in the RF path in dual polarized active antenna applications [6,7].…”

Section: Design Of the Antenna Structurementioning

confidence: 99%

Circularly Polarized T-Stub Coupled Microstrip Antenna Structure for WLAN

Themalil¹

2017

Trends in Research on Microstrip Antennas

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In this chapter, a novel feeding mechanism for single layer microstrip patch antenna to generate circular polarization using electromagnetically coupled microstrip T junction is presented. The antenna structure eliminates the need for capacitors in the RF path for active antenna applications in wireless local area network (WLAN). The simulated results were veriied by measurement using the vector network analyzer.

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Section: Design Of the Antenna Structurementioning

confidence: 99%

Circularly Polarized T-Stub Coupled Microstrip Antenna Structure for WLAN

Themalil¹

2017

Trends in Research on Microstrip Antennas

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“…MC reduction has important applications in MIMO wireless communication systems where antenna coupling degrades antenna efficiency, diversity gain, and channel capacity [10], [21]. Previous approaches to reduce MC have exploited orthogonal-feed methods [22], field canceling parasitic scatter branches [14], [16], [23]- [25], EBG [26], decoupling networks [27]- [29] and DGSs [6], [10], [30]. However, most of the previous work focuses on conventional 2-element decoupling such as [10] and [30] and the proposed structures cannot be effectively extended to more ports.…”

Section: Introductionmentioning

confidence: 99%

Configurable Defected Ground Structures for Low Profile Antenna Performance Enhancement

Zhang¹,

Han²,

Shen³

et al. 2020

Preprint

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<div>Versatile configurable defected ground structures</div><div>(CDGSs) for enhancing the performance of low profile antennas are introduced. It is shown that CDGS can significantly reduce mutual coupling (MC) between multiple antennas and suppress cross-polarization (XP) and enhance circular polarization (CP) excitation in single port low profile antennas for example. The key idea of CDGS is to construct defected ground structures (DGSs) from a grid of slots, which can be either opened or shorted with hardwires, so that they can be configured and optimized to enhance desired antenna performance characteristics. The</div><div>importance and versatility of the CDGS approach is that it</div><div>overcomes the issue of having to design bespoke DGS for each individual antenna design. Three design examples are provided to demonstrate the versatility of CDGSs for MC reduction, XP suppression and CP excitation. Experimental results demonstrate that MC can be reduced by up to 43 dB, XP can be suppressed by 15 dB and CP can be excited with 78 MHz (2.2%) 3-dB axial ratio (AR) bandwidth. The compactness and ease of fabrication also make the CDGS well suited to compact low profile internet of things (IoT) and wireless communication applications.</div>

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“…Apart from its basic role which is radiation, the antenna component in an AIA circuit can offer additional performances such as filtering, resonating, duplexing and etc.. Various active integrated antennas based on different configuration of the antenna or different combination of the radiator element with amplifiers, mixers, and oscillators have been presented in the literature [6][7][8][9][10][11][12][13][14][15][16]. Moreover, some of them have been proposed as transmitter-receiver (transceiver) units [17].…”

Section: Introductionmentioning

confidence: 99%

A New Design of Dual-Port Active Integrated Antenna for 2.4/5.2 GHZ Wlan Applications

Valizade¹,

Rezaei²,

Orouji³

2014

PIER B

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Abstract-A new design of dual-port monopole-slot-like microstrip active integrated antenna (AIA) is presented and discussed in this paper. The primary designed passive antenna is capable of supporting two different WLAN bands at 2.4-2.84 GHz and 5.15-5.35 GHz due to its dual-port structure. In order to reduce the transmission coefficient between the two ports of antenna a coupling sleeve-arm and an inverted T-shaped slot are utilized on the ground plane of antenna each beneath one of the corresponding feed-lines which act as filtering structures at desirable frequencies. The proposed passive dual-port antenna is integrated with a power amplifier (PA) and a low noise amplifier forming a dualport microstrip AIA which can be used as a full-duplex transceiver at its operating WLAN frequency bands. The measured results for both passive and active antennas show that the designed antennas have proper radiation characteristics at their desired operation frequencies. The fabricated passive antenna exhibits dual-band performance at 2-3.42 GHz and 4.5-5.6 GHz while the fabricated AIA covers 2.31-2.82 GHz (at PA port) and 4.45-5.5 GHz (at LNA Port) with 13 dB and 9 dB gain level improvement respectively.

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Compact microstrip-T coupled patch antenna for dual polarisation and active antenna applications

Cited by 31 publications

References 7 publications

Circularly Polarized T-Stub Coupled Microstrip Antenna Structure for WLAN

Circularly Polarized T-Stub Coupled Microstrip Antenna Structure for WLAN

Configurable Defected Ground Structures for Low Profile Antenna Performance Enhancement

A New Design of Dual-Port Active Integrated Antenna for 2.4/5.2 GHZ Wlan Applications

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