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Microwave Engineering, 3rd Edition by David M. PozarCopyright © 2004 John Wiley & Sons

Figure 6.1 (p. 267)A series RLC resonator and its response. (a) The series RLC circuit. (b) The input impedance magnitude versus frequency.


Figure 6.2 (p. 269)A parallel RLC resonator and its response. (a) The parallel RLC circuit. (b) The input impedance magnitude versus frequency.


Figure 6.3 (p. 271)A resonant circuit connected to an external load, RL.


Figure 6.4 (p. 273)A short-circuited length of lossy transmission line, and the voltage distributions for n = 1 resonators.)2( n and 2


Figure 6.5 (p. 276)An open-circuited length of lossy transmission line, and the voltage distributions for n = 1 resonators.)2( n and 2


Figure 6.6 (p. 278)A rectangular resonant cavity, and the electric field distributions for the TE101 and TE102 resonant modes.


Figure 6.7 (p. 283)Photograph of a W-band waveguide frequency meter. The knob rotates to change the length of the circuit-cavity resonator; the scale gives a readout of the frequency. Photograph courtesy of Millitech Corporation, Northampton, Mass.


Figure 6.8 (p. 283)A cylindrical resonant cavity, and the electric field distribution for resonant modes with 21 or


Figure 6.9 (p. 284)Resonant mode chart for a cylindrical cavity. Adapted from data from R.E. Collin, Foundations for Microwave Engineering (McGraw-Hill, 1965)


Figure 6.10 (p. 286)Normalized Q for various cylindrical cavity modes (air-filled). Adapted from data from R.E. Collin, Foundations for Microwave Engineering (McGraw-Hill, 1965)


Figure 6.11 (p. 288)Geometry of a cylindrical dielectric resonator.


Figure 6.12 (p. 288)Magnetic wall boundary condition approximation and distribution of Hz versus I for p = 0 of the first mode of the cylindrical dielectric resonator.


Figure 6.13 (p. 291)Coupling to microwave resonators. (a) A microstrip transmission line resonator gap coupled to a microstrip feedline. (b) A rectangular cavity resonator fed by a coaxial probe. (c) A circular cavity resonator aperture coupled to a rectangular waveguide. (d) A dielectric resonator coupled to a microstrip feedline.


Figure 6.14 (p. 292)A series resonant circuit coupled to a feedline.


Figure 6.15 (p. 293)Smith chart illustrating coupling to a series RLC circuit.


Figure 6.16 (p. 293)Equivalent chart of the gap-coupled microstrip resonator of Figure 6.13a.


Figure 6.17 (p. 294)Solutions to (6.78) for the resonant frequencies of the gap-coupled microstrip resonator.


Figure 6.18 (p. 296)Smith chart plot of input impedance of the gap-coupled microstrip resonator of Example 6.6 versus frequency for various values of the coupling capacitor.


Figure 6.19 (p. 296)A rectangular waveguide aperture coupled to a rectangular cavity.


Figure 6.20 (p. 297)Equivalent circuit of the aperture-coupled cavity.


Figure 6.21 (p. 298)A resonant cavity perturbed by a change in the permittivity of permeability of the material in the cavity. (a) Original cavity. (b) Perturbed cavity.


Figure 6.22 (p. 300)A rectangular cavity perturbed by a thin dielectric slab.


Figure 6.23 (p. 301)A resonant cavity perturbed by a change in shape. (a) Original cavity. (b) Perturbed cavity.


Figure 6.24 (p. 302)A rectangular cavity perturbed by a tuning post in the center of the top wall.

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