High Order Harmonic Oscillators in Microwave and Millimeter-wave ...

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3 8th Harmonic Oscillator f0 2f0 4f0 8f0 1 2 3 4 5 (a) Resonant harmonic voltage on λ g /2 line resonator. λg/2 line resonator@f0 1 2 3 4 5 N.R. N.R. 2f0 1 2 3 4 5 N.R. N.R. 4f0 1 2 3 4 5 N.R. N.R. 8f0 (b) Output circuit configuration for selecting the harmonic signals on λ g /2 resonator. Fig. 3.2: Basic concept of the push-push oscillator using λ g /2 microstrip line resonator based on the SEHO. 31
3 8th Harmonic Oscillator λg/2@f0 3 4 2 λg/4@f0 N.R. 1 Output (2f0) 5 N.R. 8 6 7 Fig. 3.3: The 2nd harmonic push-push oscillator using λ g ring resonator. inside the microstrip ring resonator. The output circuit is connected with the microstrip ring resonator at the eight points (point 1 ∼ 8). At these coupling points, voltage of the 8th harmonic signal is maximum. In the output circuit, the resonant 8th harmonic signals are in-phase. Therefore, the desired 8th harmonic signal is selectively obtained as the output signal. On the other hand, the undesired fundamental signal (f 0 ) and the odd harmonics (3f 0 , 5f 0 , 7f 0 ) are suppressed due to the push-push principle and the other even harmonics (2f 0 , 4f 0 , 6f 0 ) are also suppressed at the output port in principle. 3.1.2 Circuit Design and Simulation The practical circuit configuration of the proposed oscillator is shown in Fig. 3.5. Two negative resistance circuits are connected to the microstrip ring resonator at the opposite points to each other. The negative resistance circuits are designed so that the impedance looking into the negative resistance circuit from the coupling point of the resonator shows negative resistance. The microstrip ring resonator is also designed at the fundamental frequency. The output circuit is formed inside area of the microstrip ring resonator. The 32
Page 1 and 2: High Order Harmonic Oscillators in
Page 3 and 4: Acknowledgement I would especially
Page 5 and 6: Chapter 3 describes the 8th harmoni
Page 7 and 8: Contents Preface ii 1 Introduction
Page 9 and 10: 6.1.5 Summary . . . . . . . . . . .
Page 11 and 12: 1 Introduction 1.2 Concept and Tech
Page 13 and 14: 1 Introduction The proposed oscilla
Page 15 and 16: 1 Introduction push-push oscillator
Page 17 and 18: 2 Oscillators In this chapter, the
Page 19 and 20: 2 Oscillators V1 Base/ gate Collect
Page 21 and 22: 2 Oscillators leads to two of the m
Page 23 and 24: 2 Oscillators 2.3 Negative Resistan
Page 25 and 26: 2 Oscillators or ∂R t ∂I ∂X T
Page 27 and 28: 2 Oscillators 2.4 Oscillator Phase
Page 29 and 30: 2 Oscillators signal at ω 0 . When
Page 31 and 32: 2 Oscillators Noise power (dB) 1/f
Page 33 and 34: 2 Oscillators Sθ(ω) 1 f 3 1 f 2 k
Page 35 and 36: 2 Oscillators 2.5 Push-push Oscilla
Page 37 and 38: 3 8th Harmonic Oscillator 3.1 8th H
Page 39: 3 8th Harmonic Oscillator 3.1.1 The
Page 43 and 44: 3 8th Harmonic Oscillator C λg/2@f
Page 45 and 46: 3 8th Harmonic Oscillator 3.1.3 Fab
Page 47 and 48: 3 8th Harmonic Oscillator Fig. 3.11
Page 49 and 50: 3 8th Harmonic Oscillator 3.2 Octa-
Page 51 and 52: 3 8th Harmonic Oscillator Figure 3.
Page 61 and 62: 3 8th Harmonic Oscillator 3.3 Compa
Page 63 and 64: 4 Gunn Diode Harmonic Oscillator Th
Page 65 and 66: 4 Gunn Diode Harmonic Oscillator Ou
Page 67 and 68: 4 Gunn Diode Harmonic Oscillator #N
Page 69 and 70: 4 Gunn Diode Harmonic Oscillator 2f
Page 71 and 72: 4 Gunn Diode Harmonic Oscillator a
Page 73 and 74: 4 Gunn Diode Harmonic Oscillator ve
Page 75 and 76: 4 Gunn Diode Harmonic Oscillator Fi
Page 77 and 78: 4 Gunn Diode Harmonic Oscillator Fi
Page 79 and 80: 5 Ku-Band Push-push VCO Using Branc
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offset 1MHz offset 100kHz 5 Ku-Band
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6 Coupled Push-push Oscillator Arra
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7 Conclusion This dissertation pres
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References [1] http://www.ntt.co.jp
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[21] K. Kawahata, T. Tanaka and M.
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[40] H. Eisele and G. I. Haddad,
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[58] J. Birkeland, and T. Itoh, “
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[77] T. Ohira “Extended Adler’s
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[3] Kengo Kawasaki, Takayuki Tanaka
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