Multifrequency Oscillator-Type Active Printed Antenna Using Chaotic Colpitts Oscillator

This paper presents a new concept to realize a multifrequency Oscillator-type active printed monopole antenna. The concept of period doubling route to chaos is exploited to generate the multiple frequencies. The chaotic Colpitts oscillator is integrated with the printed monopole antenna (PMA) on the...

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Bibliographic Details
Published in:International journal of microwave science and technology 2014, Vol.2014, p.1-10
Main Authors: Kumari, Bibha, Gupta, Nisha
Format: Article
Language:English
Subjects:
Antennas
Bias
Chaos theory
Design
Electric potential
Microwaves
Monopole antennas
Oscillators
Receivers & amplifiers
Spread spectrum
Voltage
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Summary:This paper presents a new concept to realize a multifrequency Oscillator-type active printed monopole antenna. The concept of period doubling route to chaos is exploited to generate the multiple frequencies. The chaotic Colpitts oscillator is integrated with the printed monopole antenna (PMA) on the same side of the substrate to realize an Oscillator-type active antenna where the PMA acts as a load and radiator to the chaotic oscillator. By changing the bias voltage of the oscillator, the antenna can be made to operate at single or multiple frequencies. To test the characteristics of the antenna at single and multiple frequencies of operation, two similar prototype models of printed monopole broadband antennas are developed. One of these antennas used at transmit side is fed by the chaotic Colpitts oscillator while the other is used as the receive antenna. It is observed that the antenna receives single or multiple frequencies simultaneously for particular values of the bias voltage of the oscillator at the transmit end.
ISSN:1687-5826
1687-5834
DOI:10.1155/2014/675891