A novel scheme for reception using an active microstrip antenna

Biswas, Biplab; Bhattacharya, Anup; Lahiri, Partha; Mondal, Debasish

doi:10.1109/22.873908

Cited by 10 publications

(11 citation statements)

References 5 publications

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“…An Active microstrip slot-ring antenna integrated with a Gunn diode can be used as an injection locked Gunn oscillator (ILGO). Injection locking technique is efficient to demodulate the signal [3,21]. The Slot-Ring antenna is modeled as a resonant circuit with Y (s) as the admittance function across which a Gunn diode is connected across the tank circuit as shown in Fig.…”

Section: Theoretical Approachmentioning

confidence: 99%

“…Antennas, as an integral part of the system, being the port through which communication is made, follow this growth pattern and their electrical and structural characteristics are improved to fit each particular application. At higher band of frequencies microstrip antennas present some well known advantages such as low profile, small size, and low cost [1][2][3][4][5]. Another important feature is the possibility of integrating wide variety of active elements like diodes, transistors, MMIC circuits or passive lumped miniature elements such as resistors, capacitors, or inductors [6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Active Slot-Ring Antennas as a Receivers

Chatterjee¹,

Biswas²,

Bose³

2012

PIER Letters

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A Gunn mounted active microstrip slot-ring antenna (ASRA) has been investigated for the reception of FM microwave signal. Current well/valley phenomenon has been successfully utilized to demodulate the modulation information. The monolithic behaviour of an active slot-ring antenna as a lock-in amplifier, FM (Frequency Modulation) to AM (Amplitude Modulation) converter and square law detector has been demonstrated in this paper. Theoretical analysis coupled with experimental results has been presented. The proposed receiving scheme is unique in the sense that it does not require IF electronics for the purpose of demodulation. It also works well in a multi-channel environment due to the excellent noise-squelching property of an Injection Locked Gunn Oscillator.

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Section: Theoretical Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Slot-Ring Antennas as a Receivers

Chatterjee¹,

Biswas²,

Bose³

2012

PIER Letters

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“…The demodulation technique is based on the detection of the voltage or current variations of the bias-network when the injection signal is frequency modulated. The described circuits have been successfully used for the implementation of frequency-shift keying (FSK) demodulators for bluetooth systems [1] and short-range communications [2]. These initial prototypes were designed with analytical expressions, of great interest for the understanding of the system behavior.…”

Section: Introductionmentioning

confidence: 99%

“…T HE use of oscillator-injection locking has recently been proposed for the design of frequency demodulators [1], [2] with significant reduction in circuit complexity and size, in comparison with traditional schemes. This reduction also allows less power consumption and higher efficiency.…”

Section: Introductionmentioning

confidence: 99%

Frequency Demodulator Using an Injection-Locked Oscillator: Analysis and Design

Ramírez

Arana

Suárez

2008

IEEE Microw. Wireless Compon. Lett.

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This letter introduces a systematic procedure for the design of direct frequency demodulators based on injection locking. An oscillator is synchronized to the modulated carrier and the modulation signal is extracted from the time-variation of the current or voltage of the bias-network. The synchronized oscillator is optimized with harmonic-balance techniques specifically developed for this demodulation function. The circuit performance under modulated conditions is evaluated with envelope transient and using a modified Poincaré map. The new techniques are illustrated by means of their application to a direct frequency demodulator at 1.2 GHz. The letter shows that provided accurate nonlinear analysis and design techniques are used, injection-locked oscillators constitute a good option for the implementation of direct frequency demodulators.

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“…Recently self mixing Gunn mounted active antennas have been reported [3,4] at L-band for a half duplex communication system and at X-band for transceiver and spatial power combining applications. An active antenna is basically an oscillator and then a radiator, its device characteristic under injection locked condition shows an interesting modification [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In this paper, a detailed comparative study in case of reception of a FM signal between active microstrip patch antenna (AMPA) and active microstrip slotted ring antenna (ASRA) has been discussed.…”

Section: Introductionmentioning

confidence: 99%

Comparison on the Reception Property of Gunn Mounted ASRA and AMPA

Chatterjee¹,

Biswas²

2013

Advanced Computational Techniques in Electromagnetics

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A Gunn mounted active microstrip patch antenna (AMPA) and active microstrip slot antenna (ASRA) has been investigated for the reception of FM microwave signal. Current well/valley phenomenon has been successfully utilized to demodulate the modulation information. Reception poperty of the both antennas are studied in multi-channel environment. Because of its simple circuit configuration and similarity in transmitter and receiver architecture, active patch antenna as demonstrated is well suited for commercial and military application as a two-way microwave communication system. A comparative study on the role of AMPA and ASRA as a receiver shows that ASRA do better performances than AMPA. In case of ASRA the modulating signal are demodulated without any distortion. ASRA also has large locking range (29 MHz) compare to AMPA (5 MHz). So the ASRA has broad band tuning capabilities than AMPA. With ASRA configuration demodulation bandwidth in excess of 14 MHz is realizable which can successfully accommodate a large number of voice or data channels.

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A novel scheme for reception using an active microstrip antenna

Cited by 10 publications

References 5 publications

Active Slot-Ring Antennas as a Receivers

Active Slot-Ring Antennas as a Receivers

Frequency Demodulator Using an Injection-Locked Oscillator: Analysis and Design

Comparison on the Reception Property of Gunn Mounted ASRA and AMPA

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