Confidential Antenna Design Guide AH 104F2450S1 Ver. 1.2 Confidential 2.4GHz: AH 104F2450S1 PCB (GND) Keep out area （No GND Area） Recommended Size Keep Out Area 6 x 12.5 mm (75m㎡) or more （No GND Area) Antenna Layout Corner of PCB Radiation Pattern Normal (Omni) 2.4GHz Multilayer Inverted-F Antenna ( for Bluetooth® , W-LAN ) Confidential AH 104F2450S1 ■Shapes ■Feature L= 10.0 ± 0.3 mm W= 4.0 ± 0.3 mm T= 1.0 ± 0.3 mm Actual data Efficiency : -1.3dB ( 75%) @2450MHz Peak Gain : 1.7dBi Average Gain : 0.4dBi (ZX plane-Vertical polarization) * Wide Band * Stable Performance ■Electrical Characteristics 11 *on Taiyo Yuden’s Evaluation Board Peak gain [dBi] ( 53 x 15 mm ) Average XY-plane *Element-GND Distance : 1.0 mm gain [dBi] YZ-plane ZX-plane TX-H TX-V TX-H TX-V TX-H TX-V ( 74%) ( 75%) ( 73%) 1.9 1.7 1.8 -2.5 -21.3 -2.5 -15.4 -17.2 0.3 -2.6 -21.0 -2.6 -15.6 -17.0 0.4 -2.8 -20.8 -2.5 -15.4 -16.9 0.3 XY-plane +Y +X (-Y) (+X) 7 6 5 4 3 2 YZ-plane +Z +Y +X (+Y) (-Y) (+Z) 5 -5 -15 -25 -35 -45 2450 MHz ZX-plane +Z +Y +X (+Y) (+X) (+Z) 5 -5 -15 -25 -35 -45 TX-H TX-V TX-H TX-V unit: dBi 8 1 1950 ■Radiation Pattern (-X) 5 -5 -15 -25 -35 -45 Bandwidth: 300MHz (VSWR<2) 2400MHz 2450MHz 2500MHz 10 9 -1.3 -1.3 -1.3 Efficiency [dB] +Z ■VSWR (-Z) 2950 @2450MHz (-X) TX-H TX-V (-Z) AH 104F2450S1 1. External Dimensions Confidential R (for Bluetooth & 802.11b/g & WiMAX) Direction marking : 0.6mmφ 1. External Dimensions 2. Recommended Land Pattern An intestinal pattern code: 1.6mm height 3-digit alpha numeric 2. Recommended Land Pattern 1 Feed marking : Input terminal is prescribed 0.5mm□ 1 1 1 1 1 3 1 0.5 0.5 Confidential Recommended Design 3. Recommended 3-1. Recommended Pattern Pattern Layout Layout Design Design Ant Ant GND 0.5 Ant GND 0.5 2mm or more 1 Antenna Ant Ant Ant Ant GND Ant 50ΩInput No Ground Area GND Ant There should be no ground whatsoever within the antenna mounting area (within the red dotted line) including inner layer. ◎ Please design the right side of antenna should be open. Matching circuit (1005 chip : (HK1005 , EVK105) Ant Confidential Recommended Design 3-2. Precautions Ⅰ. Surface GND layer around the antenna area should be connected with inner GND layer via through hole. Ⅱ. Matching circuit line should be designed as 50Ω. Ⅲ. Thickness of PCB can be flexible. Ⅳ. Matching circuit should be placed as close as possible to the antenna. Ⅴ. Use of Taiyo Yuden HK1005 and EVK105 series as matching components are highly recommended for the optimized result. Ⅵ. Matching values may be required to get readjusted contingent upon the condition such as proximity to the metal and/or chassis, board size, etc. Recommended land pattern Example of through hole ＊2 Land for matching circuit (1005 chip) ＊１ Land for input terminal Land for GND terminal Land for NC terminal ※1 A solder area is set at solder resist. ※2 Do not arrange the surface and inside of layer pattern near the antenna mounting area. （Refer to our company evaluation circuit board） GND Confidential Metal approach 3-3. Metal avoidance area Please do not set close to a metal housing, paint including the metal, board GND, the metal chassis,etc. Antenna Front or Back Side