Master Thesis

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Figure 5.2 Side view of the antenna The radius of the circular patch is 13.5 mm and of the two probes is 0.5 mm. The ground is 33mm x 33mm and the air spacing between the ground and the patch is set 3mm in both MWO and HFSS. 5.3 Results Both Simulated and measured results will be shown here. 5.3.1 Simulated Results Simulation results are shown in the following section. Return Loss The return loss from MWO is shown in the figure 5.3. A S11 of -‐12 dB is achieved at 5.8 GHz Figure 5.3 Return Loss in Microwave Office 38
Similarly return loss in HFSS is shown in the figure 5.4 which shows an S11 of -‐10 dB at 5.8 GHz. Radiation Pattern Figure 5.4 Return Loss in HFSS The radiation pattern for φ=0 o and φ=90 o gives a good measure of the radiation pattern. Figure 5.5 shows the radiation pattern from MWO both for φ=0 o and φ=90 o . Figure 5.5 Radiation Pattern for φ=0 o and φ=90 o in Microwave Office Similarly the radiation pattern from HFSS is also shown in the figure 5.6 for for φ=0 o and φ=90 o 39
Page 1 and 2: Master Thesis Design of Microstrip
Page 3 and 4: Chapter 4 3.1 Introduction………
Page 5 and 6: Acknowledgement I would like to exp
Page 7 and 8: 1.1 Kapsch TrafficCom Chapter 1 Ove
Page 9 and 10: The On-‐Board Units above provi
Page 11 and 12: 2.1 Introduction Chapter 2 Introduc
Page 13 and 14: Since this notation frequently caus
Page 15 and 16: 2.5 Antenna Parameters Figure 2.5 A
Page 17 and 18: 2.5.3 Return Loss Return loss is an
Page 19 and 20: 2.5.7 Conversion Gain The conversio
Page 21 and 22: However when the design was optimiz
Page 23 and 24: It can be seen that radiation patte
Page 25 and 26: Similarly, the axial ratio from HFS
Page 27 and 28: Cross Polarization The cross polari
Page 29 and 30: Figure 4.1 (b) Side view of the ant
Page 31 and 32: Gain Figure 4.5 Radiation Pattern f
Page 33 and 34: Similarly axial ratio from HFSS is
Page 35 and 36: Cross polarization Cross polarizati
Page 37: 5.1 Introduction Chapter 5 Patch An
Page 41 and 42: Axial Ratio Figure 5.7 Gain (RHCP a
Page 43 and 44: 5.3.2 Measured Results Different me
Page 45 and 46: 6.1 Introduction Chapter 6 Truncate
Page 47 and 48: Cross polarization (a) (b) Figure 6
Page 49 and 50: esults and was centered at 5.8 GHz
Page 51 and 52: Return Loss The return loss for thi
Page 53 and 54: Axial Ratio Axial ratio gives an id
Page 55 and 56: 6.3.5 Simulated Results for Antenna
Page 57 and 58: Axial Ratio Axial ratio is another
Page 59 and 60: The results are very identical to t
Page 61 and 62: Results The simulation results of t
Page 63 and 64: 7.3 Spiral Antenna A spiral antenna
Page 65 and 66: Axial Ratio The axial ratio plot is
Page 67 and 68: 7.5 Conclusion All three antennas d
Page 69 and 70: 0 -‐2 -‐4 -‐6 -‐8 -
Page 71 and 72: Similarly the return loss measured
Page 73 and 74: Chapter 9 Conclusion Different Ante
Page 75 and 76: X Antenna (with 1.6 mm Substrate) A
Page 77 and 78: References [1] Per-‐Simon Kilda

Master Thesis

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