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Cavity control of active integrated antenna oscillators

Cavity control of active integrated antenna oscillators

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IEE Proceedings - Microwaves, Antennas and Propagation — Recommend this title to your library

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The use of a cavity coupled to an active integrated antenna oscillator is described. The cavity increases the loaded Q factor of the oscillator, thus improving stability and reducing the phase noise. Cavity stabilisation of a microstrip patch and slot ring oscillators is described. In both cases, phase noise at a frequency offset of 10 kHz is reduced by the order of 20 dB. A first-order analysis based on measured and simulated cavity Q factors is shown to give similar results. A Van der Pol analysis of a two-element array of patch oscillators, with a single extended coupled cavity, indicates that the likelihood of mutual locking in an array which has oscillators with slightly different free running frequencies is enhanced albeit at the expense of increased start-up time.

References

    1. 1)
      • J.A. Navarro , K. Chang , K.F. Lee , W. Chen . (1997) Active microstrip antennas, Advances in microstrip and printed antennas.
    2. 2)
      • H.-C. Chang , X. Cao , U. Mishra , R.A. York . Phase noise in coupled oscillators: theory and experiment. IEEE Trans. , 604 - 615
    3. 3)
      • K. Chang , K. A. Hummer , J. Klein . Experiments on injection locking of active antenna elements for activephased arrays and spatial power combiners. IEEE Trans. , 7 , 1078 - 1084
    4. 4)
      • H.-C. Chang , X. Cao , M.J. Vaughan , U. Mishra , R.A. York . Phase noise in externally injection locked oscillator arrays. IEEE Trans. , 2035 - 2042
    5. 5)
      • J.W. Andrews , P.S. Hall . Oscillator stability and phase noise reduction inphase lock active microstrip patch antenna. Electron. Lett. , 9 , 833 - 835
    6. 6)
      • J.J. Lynch , R.A. York . Mode locked arrays of coupled phase locked loops. IEEE Microw. Guid. Wave Lett. , 7 , 213 - 215
    7. 7)
      • J.E. Aitken . Swept frequency microwave Q factor measurement. IEE Proc. , 9 , 855 - 862
    8. 8)
      • Wu, Y., Chen, Q., Fusco, V.F., Zheng, M., Hall, P.S.: `Radiation leakage from an undermetallised silicon cavity', IEEE MTT-S symposium, 1999, p. 1331–1334.
    9. 9)
      • M. Zheng , Q. Chen , P.S. Hall , V.F. Fusco . Oscillator noise reduction ina cavity-backed active microstrip patch antenna. Electron. Lett. , 15 , 1276 - 1277
    10. 10)
      • M.J. Cryan , P.S. Hall . Integrated active antenna with simultaneouslytransmit-receive operation. Electron. Lett. , 4 , 286 - 287
    11. 11)
      • Hewlett Packard, : `User's guide', 1994, HP85671A Phase Noise Utility, Part No. 85671–90010.
    12. 12)
      • D.B. Leeson . A simple model of feedback oscillator noise spectrum. Proc. IEEE , 329 - 330
    13. 13)
      • K. Kurokawa . (1969) An introduction to the theory of microwave circuits.
    14. 14)
      • A.A. Sweet . (1943) MIC and MMIC amplifier and oscillator circuit design.
    15. 15)
      • K.D. Stephan , W.A. Morgan . Analysis of inter-injection-lockedoscillators for integrated phased arrays. IEEE Trans. , 771 - 781
    16. 16)
      • C. Kykkotis , P.S. Hall , H. Ghafouri-Shiraz . Performance of activeantenna oscillator arrays under modulation for communication systems. IEE Proc., Microw. Antennas Propag. , 4 , 313 - 320
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