Antenna Information 1

FCC ID: RRK-P0603038

Parts List/Tune Up Info

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FCCID_415715

M803 Assembly Bluetooth Antenna 2.39 – 2.5GHz Rowland B. Jones Jr. February 20, 2004 CONFIDENTIAL

Confidential INDEX 1 Summary................................................................................................................................ 3 2 Definition of Radiation Pattern Plane................................................................................. 4 3 M803 Efficiency Measurements .......................................................................................... 5 3.1 Efficiency WLAN Band 2.4 – 2.495GHz .....................................................................................................5 3.2 M803 Radiation Patterns..............................................................................................................................6 3.3 Return Loss M803 .........................................................................................................................................7 Ethertronics Inc. 2 9605 Scranton Road, Suite 850 Confidential San Diego, CA 92121 (858) 550-3820 Office (858) 550-3821 FAX

Confidential 1 Summary To insure the increase in cable length does not affect the performance of the M803 antenna. Figure 1: M803 Assembly Return Loss at M803 - 8dB Bandwidth (MHz) 170 Efficiency M803 2.4 – 2.485 MHz Overall (%) 40.49 Maximum (peak) (%) 45.35 Low Freq. (%) 34.69 High Freq. (%) 42.94 Ethertronics Inc. 3 9605 Scranton Road, Suite 850 Confidential San Diego, CA 92121 (858) 550-3820 Office (858) 550-3821 FAX

Confidential 2 Definition of Radiation Pattern Plane Z Y X Figure 2: Reference axis. Azimuth = XY Elevation = XZ Ethertronics Inc. 4 9605 Scranton Road, Suite 850 Confidential San Diego, CA 92121 (858) 550-3820 Office (858) 550-3821 FAX

Confidential 3 M803 Efficiency Measurements 3.1 Efficiency WLAN Band 2.4 – 2.495GHz Overall Eff. (Az.+El.) : 40.49 % (-3.93 dBi) between [2.4 2.495] GHz Best Eff. (Az.+El.) : 45.35 % (-3.43 dBi) @ 2.45 GHz between [2.4 2.495] GHz Low Edge Eff. (Az.+El.) : 34.69 % (-4.6 dBi) @ 2.4 GHz High Edge Eff. (Az.+El.) : 42.94 % (-3.67 dBi) @ 2.495 GHz Total efficiency (dBi). 0 -1 -2 -3 -4 -5 dBi -6 -7 -8 -9 -10 2.3 2.35 2.4 2.45 2.5 2.55 2.6 Frequency (GHz) Figure 3: Efficiency (%). Ethertronics Inc. 5 9605 Scranton Road, Suite 850 Confidential San Diego, CA 92121 (858) 550-3820 Office (858) 550-3821 FAX

Confidential 3.2 M803 Radiation Patterns Freq = 2.44 GHz Gmax. = -0.59465 dBi Gainavg. = -2.1159 dBi 0 dB -1 0 d B -2 0 d B Y -3 0 d B Red. Max: -1.3557 dBi, -134 deg. X Blue. Max: -2.8139 dBi, 145 deg. Green. Max: -0.59465 dBi, 180 deg. Figure 4: Azimuth Red: Azimuth Main Blue: Azimuth Cross Green: Main + Cross Freq = 2.44 GHz Gmax. = -1.3204 dBi Gainavg. = -3.5112 dBi 0 dB -1 0 d B -2 0 d B -3 0 d B Z Red. Max: -1.4795 dBi, -179 deg. XBlue. Max: -5.2185 dBi, -154 deg. Green. Max: -1.3204 dBi, -179 deg. Figure 5: Elevation Ethertronics Inc. 6 9605 Scranton Road, Suite 850 Confidential San Diego, CA 92121 (858) 550-3820 Office (858) 550-3821 FAX

Confidential 3.3 Return Loss M803 M803 0 -2 -4 -6 -8 -10 dB -12 -14 -16 -18 -20 2.3 2.35 2.4 2.45 2.5 2.55 2.6 Frequency, (GHz) Figure 6: Return Loss Ethertronics Inc. 7 9605 Scranton Road, Suite 850 Confidential San Diego, CA 92121 (858) 550-3820 Office (858) 550-3821 FAX


Document Created: 2004-02-26 16:18:24
Document Modified: 2004-02-26 16:18:24
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