Microwave Ring Circuits and Related Structures phần 1 ppsx

... 0.0794 -0. 412 9 -1. 0773 5.99 31 4. 516 8 2 1. 52 71 1.42E - 4 0.4729 6.3852 5.62 21 -1. 913 9 3.80 91 3 2 .10 05 4.42E - 6 0.8995 10 .6240 9. 619 5 -8.3029 1. 8957 BACKGROUND AND APPLICATIONS 3 TABLE 1. 1 Comparison ... 295 11 Ring Antennas and Frequency-Selective Surfaces 297 11 .1 Introduction 297 11 .2 Ring Antenna Circuit Model 298 11 .2 .1 Approximations and Fie...

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... GHz l 1 = 12 .69 mm, l 2 = 16 .16 mm f 1 = 1. 8 GHz, f 1 = 1. 79 GHz, f 2 = 2.25 GHz f 2 = 2.27 GHz l 1 = 11 .24 mm, l 2 = 17 . 61 mm f 1 = 1. 68 GHz, f 1 = 1. 64 GHz, f 2 = 2.48 GHz f 2 = 2.57 GHz ring ... eff 1 1 2 2 44 == ee and n = 1, 3, 5 . . . RING BANDPASS FILTERS WITH TWO TRANSMISSION ZEROS 18 1 1. 0 1. 5 2.0 2.5 3.0 Frequency (GHz) -80 -60 -40 -20 0 M...

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... Figure 3 .11 [8]. As shown in Figure 3 .11 , the double-tuned characteristics are always found, except when q = p or q = p/2 [8]. S gb gb bg 21 2 2 11 2 11 2 11 2 11 22 2 11 2 11 2 4 14 1 = + + () ... () () + () 22 11 22 12 21 2 1 tanh tan tanh tan ab ab RING EQUIVALENT CIRCUIT IN TERMS OF G, L, C 37 Port 1 i 1 v 1 Port 2 i 2 v 2 w l 1 l 2 l=l 1 +l 2 Z ic = v...

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... g = 0.2mm and 1 mm. [40] G. Dubost, “Large bandwidth circular slot at resonance with directional radia- tion,” Electron. Lett., Vol. 24, No. 23, pp. 14 10 14 11, November 10 , 19 88. [ 41] R. N. Simons, ... 313 – 314 , April 15 , 19 82. [37] J. A. Navarro and K. Chang,“Varactor-tunable uniplanar ring resonators,” in 19 92 IEEE MTT-S Int. Microwave Symp. Dig., pp. 9 51 954, Jun...

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... resonant frequency of the ring resonator. The ring resonator, shown in Figure 6 .1 is 13 9 Microwave Ring Circuits and Related Structures, Second Edition, by Kai Chang and Lung-Hwa Hsieh ISBN 0-4 71- 44474-X Copyright ... S. Barker and G. M. Rebeiz, “Distributed MEMS true-time delay phase shifters and wideband switches,” IEEE Trans. Microwave Theory Tech., Vol. 46, No...

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... 2.69 dB 0.97 dB 3-dB Bandwidth 70 MHz 15 0 MHz Loaded Q 25 11 .7 External Q 61. 16 25.58 RING SLOW-WAVE BANDPASS FILTERS 17 7 S 21 S 11 1. 5 2.0 2.5 3.0 Frequency (GHz) -40 -30 -20 -10 0 Magnitude (dB) Measurement Calculation FIGURE ... 4 .17 GHz with -34.9 dB to 4.49 GHz with -2.98 dB) and 10 1.56 dB/GHz COMPACT, LOW INSERTION LOSS, SHARP REJECTION, AND BANDPASS FILTERS 16 9...

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... 6GHz. The amplitude and phase imbalance 18 0° REVERSE-PHASE HYBRID -RING COUPLERS 225 0 -5 -10 -15 -20 10 -40 -10 -30 -20 0 -50 12 3456 S 31 S 21 S 41 S 11 Frequency (GHz) Return Loss and Isolation (dB) Coupling ... Vol. 16 , p. 3 61, June 19 68. [40] L.W. Chua,“New broad-band matched hybrids for microwave integrated circuits, ” in 19 71 Proc. European Microwave...

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... 2 15 .14 6 15 .098 0.320 19 8.200 1, 190.9 n = 3 16 .564 16 .530 0. 210 222 .10 0 2,038 n = 4 18 .348 18 .333 0.080 19 4.600 3,570.6 n = 5 20.386 20.395 0.040 18 3.300 3,823.4 n = 6 22.593 22. 615 0.090 16 3.600 ... 1, 483 .13 n = 2 17 .502 17 .482 0 .11 0 684.900 1, 559.69 n = 3 20.449 20. 412 0 .18 0 775.900 2,505 .17 n = 4 23.945 23.889 0.230 604 .10 0 2 ,18 7.48 TABLE 10...

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... coefficients and evaluating at f = 0: (11 .15 ) and The self-conductance at a or b can be found by substituting a = b in Equa- tion (11 .15 ) and extracting only the real part: (11 .16 ) (11 .17 ) where rb b = ... measurement, and microwave identifica- tion systems [11 , 12 ]. SLOTLINE RING ANTENNAS 311 FIGURE 11 .10 Slot ring feed method showing electric field [20]. (Permiss...

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... OSCILLATORS, AND OTHER APPLICATIONS 10 20 0 30 -10 -20 -30 -40 -50 -60 -70 11 .7 511 .68 11 . 61 11. 5 411 .47 12 .1 12.03 11 .9 611 .8 911 .82 11 .4 Output Power (dBm) Frequency (GHz) +0 V +90 V FIGURE 12 .18 Measured ... frequency modulation. Fur- 342 RING MIXERS, OSCILLATORS, AND OTHER APPLICATIONS 10 20 0 30 -10 -20 -30 -40 -50 -60 -70 12 .0 912 .07 12 .05 12 .0 3...

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