Document Type : Review Article

Authors

1 Islamic Azad University, Arak Branch, Young Researchers Club, Arak, Iran

2 young researchers club of islamic azd aligodarz university

Abstract

Here, a self-oscillating mixer is experimentally demonstrated employing both the fundamental and harmonic signals generated by the oscillator sub-circuit in the mixing process. The resulting circuit is a dual-band down-converting mixer that can operate in the C-band, or in the X-band. The oscillator uses the active super harmonic coupling to enforce the quadrature relationship of the fundamental outputs. Either the fundamental outputs of the oscillator or the second harmonic oscillator output signals present at the common mode nodes are connected to the mixer via a set of complementary switches. The mixer achieves a conversion gain between 9–11.5 dB in both frequency bands. The third-order output intercept-point for the C-band and the X–band operations are 10.42 and 8.33 dBm, respectively. The circuit was designed and simulated in 0.18- CMOS technology by ADS2008.

Keywords

[1] G. C. Wang et al., “A low cost DBS low noise block downconverter with a DR stabilized MESFET self-oscillating mixer,” in IEEE MTT-S International Digest, May 1994, vol. 3, pp. 1447–1450.
[2] M.-R. Tofighi and A. S. Daryoush, “A 2.5-GHz InGaP/GaAs differential cross-coupled Self-Oscillating Mixer (SOM) IC,” IEEE Microwave.Wireless Components Letters, vol. 15, no. 4, pp. 211–213, Apr. 2005.
[3] S. A. Winkler, K. Wu, and A. Stelzer, “Integrated receiver based on a high-order subharmonic self-oscillating mixer” IEEE Trans. Microwave Theory Techniques, vol. 55, no. 6, pp. 1398–1404, Jun. 2007.
[4] F. Plessas, A. Papalambrou, and G. Kalivas, “A subharmonic injectionlocked self-oscillating mixer” in Proc. IEEE International Symposium Circuits and Systems, New Orleans, LA, May 2007, pp. 2626–2629.
[5] S. Ver Hoeye, L. Zurdo, and A. Suarez, “New nonlinear design tools for self-oscillating mixers” IEEE Microwave.Wireless Components Letters, vol. 11, no. 8, pp. 337–339, Aug. 2001.
[6] L. F. Herran, S. Ver Hoeye, and F. Las Heras, “Nonlinear optimization tools for the design of microwave high-conversion gain harmonic selfoscillating mixers” IEEE Microwave.Wireless Components Letters, vol. 16, no. 1, pp. 16–18, Jan. 2006.
[7] J. Zhang, Y.Wang, and Z. Chen, “Integration of a self-oscillating mixer and an active antenna” IEEE Microwave.Wireless Components Letters, vol. 9, no. 3, pp. 117–119, Mar. 1999.
[8] J. Xu and K.Wu, “A subharmonic self-oscillating mixer using substrate integrated waveguide cavity for millimeter-wave application” in IEEE MTT-S International Microwave Symposium Digest, Jun. 2005, pp. 2019–2022.
[9] Y. Chen and Z. Chen, “A dual-gate FET subharmonic injection-locked self-oscillating active integrated antenna for RF transmission” IEEE Microwave.Wireless Components Letters, vol. 13, no. 6, pp. 199–201, Jun. 2003.
[10] S. A. Winkler, K. Wu, and A. Stelzer, “A novel balanced third and fourth harmonic self-oscillating mixer with high conversion gain” in Proc. 36th European Microwave Conference, Manchester, U.K., Sep. 2006, pp. 1663–1666.
[11] M. Sironen, Y. Qian, and T. Itoh, “A subharmonic self-oscillating mixer with integrated antenna for 60-GHz wireless applications” IEEE Trans. Microwave Theory Techniques, vol. 49, no. 3, pp. 442–450, Mar. 2001.
[12] N. Siripon, K. S. Ang, M. Chongcheawchamnan, and I. D. Robertson, “Design and performance of a novel balanced self-oscillating mixer” in Proc. 30th European Microwave Conference, Paris, France, Oct. 2000, pp. 16–19.
[13] N. Bourhill, S. Iezekiel, and D. P. Steenson, “A balanced self-oscillating mixer” IEEE Microwave Guided Wave Lett., vol. 10, no. 11, pp. 481–483, Nov. 2000.
[14] T.-C. Huang and S.-J. Chung, “A new balanced self-oscillating mixer (SOM) with integrated antenna” in IEEE Int. AP-S Symposium, Columbus, OH, USA, Jun. 2003, pp. 89–92.
[15] D. H. Evans, “A millimetre-wave self-oscillating mixer using a GaAs FET harmonic-mode oscillator” in IEEE MTT-S Int. Microwave Symposium Digest, Jun. 1986, pp. 601–604.
[16] K. Nimmagadda and G. Rebeiz, “A 1.9 GHz double-balanced subharmonic ixer for direct conversion receivers” in IEEE Radio Freqency Integrated Circuits Symposium, Digest, 2001, pp. 253–256.
[17] B. R. Jackson and C. E. Saavedra, “A CMOS subharmonic mixer with nput and output active baluns” Microwave Optical Technology Letters, vol. 48, p. 2472–2478, Dec. 2006.