Frequency offset retrodirective antenna array

Karode, S.L.; Fusco, Vincent

doi:10.1049/el:19970930

Cited by 22 publications

(10 citation statements)

References 3 publications

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“…vertical polarisation for the emitting array and horizontal polarisation for the receiving array V. COMPARISON WITH PREVIOUS WORKS Van Atta array is the simplest form of retrodirective array. Authors from article [7] conducted experimental work on proving the capability, at 1GHz, of this type of array on retransmitting the signal towards the interrogator. Despite the work presented in [7] is related with retrodirective arrays, the concept and the technique used to obtain retrodirectivity differs from PCA.…”

Section: B Isolation Between the Transmitter And The Receivermentioning

confidence: 99%

“…Authors from article [7] conducted experimental work on proving the capability, at 1GHz, of this type of array on retransmitting the signal towards the interrogator. Despite the work presented in [7] is related with retrodirective arrays, the concept and the technique used to obtain retrodirectivity differs from PCA. In [7], the array consists on pairs of antenna elements, each one acting as transmitter or receiver, connected by transmission lines causing the phase conjugation effect.…”

Section: B Isolation Between the Transmitter And The Receivermentioning

confidence: 99%

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Passive phase conjugating array using FR4

Gomes¹,

Paraiso²,

Fernandes³

et al. 2014

2014 Loughborough Antennas and Propagation Conference (LAPC)

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This paper presents the development and construction of a low-cost passive phase conjugating array (PCA) antenna aiming the mitigation of multipath phenomena at 6 GHz. The implementation of the proposed array was performed on woven fiber glass substrate using both discrete and integrated circuits. Measurement results, obtained inside an anechoic chamber, from a 16-element PCA antenna under multipath conditions are used to validate its feasibility for vehicular applications where beam steering is required. Tests performed in the chamber yield to an average gain of 9 dB across a 120 0 angular range and peak gains of 32 dB. The relative good performance of the proposed PCA topology clearly demonstrates its benefit in mitigating multipath fading and, consequently, fade margin reduction.

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Section: B Isolation Between the Transmitter And The Receivermentioning

confidence: 99%

Section: B Isolation Between the Transmitter And The Receivermentioning

confidence: 99%

Passive phase conjugating array using FR4

Gomes¹,

Paraiso²,

Fernandes³

et al. 2014

2014 Loughborough Antennas and Propagation Conference (LAPC)

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“…In [7], a little frequency offset which is achieved by mixer is introduced in the Van Atta array. This array has better isolation and wider application than the conventional Van Atta array.…”

Section: Array Designmentioning

confidence: 99%

“…Several new techniques have been introduced to Van Atta array in recent years, which lead to higher performances [5,6]. The frequency offset can achieve good isolation and compensate for the beam pointing error introduced by antenna element directivity [7]. The usual frequency offset retrodirective array often operates in a single point or narrow band.…”

Section: Introductionmentioning

confidence: 99%

Design of a Broadband Frequency Offset Van Atta Array

Chen¹,

Wang²,

Shi³

et al. 2010

PIER Letters

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Abstract-A novel broadband Van Atta array operating in a broadband with frequency offset characteristic is proposed. A single sideband mixer is introduced to achieve sideband choice without utilizing filters which make this array have excellent performance and wider applications than the conventional Van Atta array. The simulated results of the amplitude and phase of the array show that this antenna array can achieve retrodirectivity with frequency offset and good isolation in a broadband. The experimental performance of the array is observed within the frequency range from 2.8 GHz to 3.4 GHz.

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“…The stringent specification on receiver sensitivity rules out the majority of known retrodirective antenna array architectures, which fall into two broad classes, either the frequency offset Van Atta type [3] or the Phase Conjugating Pon type [4]. In addition to lack of receive sensitivity these basic architectures are unable to deal with complex modulation scenarios where transmit and receive phase modulated signals are required to operate in full duplex mode, e.g.…”

Section: Introductionmentioning

confidence: 99%

SATCOM Retrodirective Array

Buchanan

Fusco

Vorst

2016

IEEE Trans. Microwave Theory Techn.

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Abstract-We present an in depth look at the challenges involved in using analogue retrodirective arrays for satellite communications. The main technical issues surrounding the development of a retrodirective (self-steering) Satellite Communications (SATCOM) system are given and techniques for mitigating these issues provided. Detailed results are given for a prototype high performance circularly polarized retrodirective array architecture suitable for mounting on an un-stabilized mobile platform. The paper concludes with practical retrodirective L-band array results with the array used to acquire actual broadband satellite data signals from a commercial L-band satellite system. Received satellite signals as low as -130dBm at the antenna elements are tracked. Accurate self-tracking occurs over the azimuth range of up to ± ± ± ±40°°°°.

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Frequency offset retrodirective antenna array

Cited by 22 publications

References 3 publications

Passive phase conjugating array using FR4

Passive phase conjugating array using FR4

Design of a Broadband Frequency Offset Van Atta Array

SATCOM Retrodirective Array

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