Design of Antennas for Handheld DVB-H ... - Lunds tekniska högskola

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Figure 5.14. Radiation pattern for Loop antenna, frequency=640 MHz, Theta=0°- 350°, Phi=90°, A=Phi polarization, B=Theta polarization. Power gain / dB 2 0 -2 -4 -6 -8 -10 -12 Switched monopole 1 vs specification 470 510 550 590 630 670 710 Frequency / MHz 64 Specification Circuit 1 Circuit 2 Circuit 3 Circuit 4 Figure 5.15. Gain for the four different matching networks of switched monopole 1 versus specification.
Table 5.4. Switched monopole 1, gain and efficiency results. Switched monopole 1 Frequency / MHz Gain / dB Efficiency / % 470 -5.12 10.0 490 -4.86 11.7 510 -4.22 18.8 530 -4.57 14.7 550 -4.14 19.7 570 -2.74 24.9 590 -0.54 25.0 610 0.58 30.1 630 0.00 34.3 650 0.10 43.1 670 -1.18 57.5 690 -1.59 54.8 710 -1.97 50.2 Figure 5.16. Radiation pattern for Switched monopole 1, frequency=510 MHz, Theta=90°, Phi=0°-350°, A=Phi polarization, B= Theta polarization. 65
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Design of Antennas for Handheld DVB
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Acknowledgements This master thesis
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4 DESIGN AND TESTING OF ANTENNA SOL
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Figure 5.2. Reference dipole antenn
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1 Introduction The passed decade th
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2 Background This chapter provides
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is simultaneously modulated into 10
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2.1.3 Reed-Solomon Codes 2.1.4 DVB-
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2.1.5 DVB-H DVB-H is the latest dev
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2.1.5.2 Time slicing A large proble
Page 21 and 22: figure 2.5). All three elements tog
Page 23 and 24: symbols or four 2K OFDM symbols. Th
Page 25 and 26: 2.2 Competing standards The DVB-H s
Page 27 and 28: 2.3 Antenna theory This section des
Page 29 and 30: Figure 2.9. Impedance bandwidth def
Page 31 and 32: unloaded quality factor (Q0) and th
Page 33 and 34: losses should be avoided in handhel
Page 35 and 36: 3.3 Loop Figure 3.1. Yagi-Uda anten
Page 37 and 38: PIFA Figure 3.2. Four different con
Page 39 and 40: The size of the antenna is another
Page 41 and 42: 4.4 PIFA To verify the balun a resi
Page 43 and 44: 4.5 Folded-Patch With the PIFA-ante
Page 45 and 46: Figure 4.9a. Folded-patch 2, front
Page 47 and 48: Figure 4.11. Loop antenna schematic
Page 49 and 50: Figure 4.15. Wire loop antenna retu
Page 51 and 52: using an H-field antenna together w
Page 53 and 54: antenna. The dimension of the anten
Page 55 and 56: The result of the return loss measu
Page 57 and 58: Figure 4.24. Return loss graph for
Page 59 and 60: The result of the measurement of th
Page 61 and 62: Figure 4.31. Return loss graph for
Page 63 and 64: frequency band, the first from 470
Page 65 and 66: Figure 5.6. Radiation pattern for R
Page 67 and 68: 5.1.3 Measurement result In this ch
Page 69 and 70: Figure 5.10. Radiation pattern for
Page 71: Figure 5.12. Radiation pattern for
Page 75 and 76: Power gain / dB 2 0 -2 -4 -6 -8 -10
Page 77 and 78: Figure 5.22. Radiation pattern for
Page 79 and 80: was received in all five channels.
Page 81 and 82: 6.3 Control signal 6.4 Cost The swi
Page 83 and 84: not be possible, there will always
Page 85 and 86: There are many advantages with tuna
Page 87 and 88: 8 References [1] Schiller, Jochen -
Page 89: [29] Gardiol, Fred - Microstrip cir
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