"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 4, 2017

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Active antennas integrated with substrate integrated waveguide for power combining

 

V. E. Lyubchenko, E. O. Yunevich, V. I. Kalinin, V. D. Kotov, D. E. Radchenko, S. A. Telegin

Kotel'nikov Institute of Radio Engineering and Electronics RAS, Fryazino Brunch, Vvedensky Sq. 1, Fryazino Moscow region, 141120, Russia

The paper is received on March 8, 2017

 

Abstract. Microwave oscillator, based on the one-dimentional microstrip log-periodic antenna array, integrated with field-effect transistors and substrate integrated waveguide (SIW), is proposed and studied. The waveguide consists of the dielectric substrate bounded with two parallel metal plates and two rows of interlayer metalized cylindrical holes. Substrate integrated waveguide technology has some advantages, such as low loss, high Q-factor of cavities, good shielding properties, and the ability to integrate all components on the same substrate. The oscillator is based on the rectangular substrate integrated cavity. The cavity was excited by four active antenna-oscillators. Field effect transistor NE350184C with Ga = 13.5 dB at 20 GHz was used as an active device. The substrate integrated waveguide with sizes corresponding to the estimated frequency was used to transmit the energy from the cavity. The end of the waveguide had a wedge form and was inserted into the hollow metal waveguide. The fundamental frequency of generation was ~ 12 GHz. Mutual synchronization of all four antenna-oscillators was obtained despite the difference of the fundamental frequencies. Measured total output power was 1.5 mW, that exceeded the summarized power of the single antenna-oscillators.

Key words: microwaves, oscillator, substrate integrated waveguide, log-periodic antenna, field-effect transistor.

References

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For citation:

V. E. Lyubchenko, E. O. Yunevich, V. I. Kalinin, V. D. Kotov, D. E. Radchenko, S. A. Telegin. Active antennas integrated with substrate integrated waveguide for power combining. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 4. Available at http://jre.cplire.ru/jre/apr17/4/text.pdf. (In Russian)