Microstrip antennas for SAR applications

Pokuls, R.; Uher, J.; Pozar, D.M.

doi:10.1109/8.719972

Cited by 108 publications

(16 citation statements)

References 8 publications

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“…Element spacing is kept less than the wavelength () [29] of the operating frequency band to avoid grating lobes. Usually element spacing is kept 0.7 [30] for optimizing mutual coupling among the antenna elements. Now, the total radiation pattern of the antenna array is related to the array factor (AF) according to (2) Array pattern = Single element pattern × Array factor (AF) (2) All the single elements of the developed DP ACMPA array are excited with equal amplitude in the same phase, and array element spacing is kept the same in both x and y directions.…”

Section: A Array Theorymentioning

confidence: 99%

A <inline-formula><tex-math notation="LaTeX">$4 \times 4$</tex-math></inline-formula> Dual Polarized mm-Wave ACMPA Array for a Universal mm-Wave Chipless RFID Tag Reader

Islam

Karmakar

2015

IEEE Trans. Antennas Propagat.

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A 4×4 dual polarized (DP) aperture coupled microstrip patch antenna (ACMPA) array for a universal millimeter (mm) wave chipless RFID tag reader is presented. The mm-wave DP ACMPA array is capable of reading all types of frequency domain based chipless RFID tags (linearly polarized, orientation insensitive, cross-polarized and dual polarized) within its operating frequency bandwidth. The developed antenna is operating over the 22-26.5 GHz frequency band with 16 dBi realized gain and over 35 dB isolation. A systematic approach is followed for designing the mm-wave antenna array, where, firstly a single antenna element is designed. Then, a 1-32 way corporate feed network for the dual offset feeding of cross slots is designed using multistage power dividers. After that, the 4×4 mm-wave DP ACMPA array is designed, optimized, fabricated, assembled, and tested. Simulation and measurement results for different development stages of the array are described in detail. Finally, the assembled antenna is used for measuring ten orientation insensitive (OI) thermal printed mm-wave chipless RFID tags on a paper substrate to validate its functional accuracy. The developed mm-wave DP ACMPA array with high port-to-port isolation can be used in a universal commercial mm-wave chipless RFID tag reader due to its low cost, high gain and low profile structure.Index Terms-Antenna arrays, aperture coupled antennas, millimeter wave measurements, radio frequency identification (RFID), RFID tags.0018-926X (c) . He possesses approximately 20 years of teaching, design, and development experience in antennas, microwave active and passive circuits, and RFIDs in Canada, Australia, and Singapore. He has authored or coauthored over 300 referred journal and conference papers, 40 book chapters and 8 books. He has 8 international patent applications on chipless RFID.

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Section: A Array Theorymentioning

confidence: 99%

A <inline-formula><tex-math notation="LaTeX">$4 \times 4$</tex-math></inline-formula> Dual Polarized mm-Wave ACMPA Array for a Universal mm-Wave Chipless RFID Tag Reader

Islam

Karmakar

2015

IEEE Trans. Antennas Propagat.

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“…One of the main goals of the antenna design is to obtain a radiation pattern that exhibits a horizontal beamwidth that leads to an azimuthal spatial resolution appropriate for the purposes of the radar [1][2][3][4][5][6][7]. Other important figures of merit for the antenna are return loss, polarization purity, power, and gain.…”

Section: Introductionmentioning

confidence: 99%

Design of an antenna array for a LFM-CW synthetic aperture radar prototype

Zozaya

Pino

2020

DYNA

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This paper deals with the design of two identical 1 × 4 patch antenna arrays for a linear frequency modulated (LFM) continuous wave (CW) synthetic aperture radar (SAR) prototype. The theoretical design is carried out by using the empirical equations available in the literature, while the design optimization is performed by numerical methods using two commercial full wave simulators. Once the antennas are built they are experimentally characterized and incorporated into a radar prototype implemented at the Ecuadorian Space Institute. The radar is tested in a probing polygon and the horizontal resolution is estimated. A measured azimuthal resolution value very close to the theoretical one is achieved

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“…Microstrip patch antennas have found many applications in wireless communication systems, because of their light weight, low profile, low cost, high performance, and compact size, besides an easy design, fabrication, and integration into frontend circuits [1][2][3][4]. As a matter of fact, planar antennas are a very common choice for Universal Mobile Telephone Systems (UMTS), Synthetic Aperture Radars (SAR), and Radio-Frequency Identification (RFID) systems [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A Multiband Proximity-Coupled-Fed Flexible Microstrip Antenna for Wireless Systems

Casula

Maxia

Montisci

et al. 2016

International Journal of Antennas and Propagation

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A multiband printed microstrip antenna for wireless communications is presented. The antenna is fed by a proximity-coupled microstrip line, and it is printed on a flexible substrate. The antenna has been designed using a general-purpose 3D computer-aided design software (CAD), CST Microwave Studio, and then realized. The comparison between simulated and measured results shows that the proposed antenna can be used for wireless communications for WLAN systems, covering both the WLAN S-band (2.45 GHz) and C-band (5.2 GHz), and the Wi-Max 3.5 GHz band, with satisfactory input matching and broadside radiation pattern. Moreover, it has a compact size, is very easy to realize, and presents a discrete out-of-band rejection, without requiring the use of stop-band filters. The proposed structure can be used also as a conformal antenna, and its frequency response and radiated field are satisfactory for curvatures up to 65°.

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Microstrip antennas for SAR applications

Cited by 108 publications

References 8 publications

A <inline-formula><tex-math notation="LaTeX">$4 \times 4$</tex-math></inline-formula> Dual Polarized mm-Wave ACMPA Array for a Universal mm-Wave Chipless RFID Tag Reader

A <inline-formula><tex-math notation="LaTeX">$4 \times 4$</tex-math></inline-formula> Dual Polarized mm-Wave ACMPA Array for a Universal mm-Wave Chipless RFID Tag Reader

Design of an antenna array for a LFM-CW synthetic aperture radar prototype

A Multiband Proximity-Coupled-Fed Flexible Microstrip Antenna for Wireless Systems

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