Confidential Antenna Design Guide AH 104N2450D1 Ver. 2.1 Confidential 2.4GHz／5GHz: AH 104N2450D1 PCB (GND) Keep out area （No GND Area） Recommended Size Keep Out Area 6.5 x 21 mm (136.5m㎡) or more （No GND Area) Antenna Layout Corner of PCB Radiation Pattern Normal (Omni) 2.4 / 5GHz Multilayer Monopole Antenna Confidential ( for W-LAN ) AH 104N2450D1 (2.4GHz band) ■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 ( 73%) @2450MHz Peak Gain : 2.1dBi Average Gain : 0.3dBi (ZX plane-Vertical polarization) * Wide Band * High Performance ■Electrical Characteristics Peak gain [dBi] Average XY-plane gain [dBi] YZ-plane ZX-plane TX-H TX-V TX-H TX-V TX-H TX-V ( 72%) ( 73%) ( 76%) 1.7 2.1 1.4 -2.6 -29.5 -2.4 -15.1 -17.1 0.3 -2.5 -29.0 -2.5 -15.1 -17.0 0.3 -2.5 -29.1 -2.5 -15.3 -16.8 0.5 XY-plane +Y +X (-Y) (-X) 5 -5 -15 -25 -35 -45 (+X) 8 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 Bandwidth: 500MHz (VSWR<2) 1 1950 ■Radiation Pattern +Z ■VSWR 2400MHz 2450MHz 2500MHz 10 9 -1.4 -1.3 -1.2 Efficiency [dB] *on Taiyo Yuden’s Evaluation Board ( 54 x 12 mm ) *Element-GND Distance : 1.5 mm 11 (-Z) 2950 @2450MHz (-X) TX-H TX-V (-Z) 2.4 / 5GHz Multilayer Monopole Antenna ( for W-LAN ) Confidential AH 104N2450D1 (5GHz band) ■Shapes ■Feature L= 10.0 ± 0.3 mm W= 4.0 ± 0.3 mm T= 1.0 ± 0.3 mm Actual data Efficiency : -1.6dB ( 69%) Peak Gain : 2.4dBi * Wide Band * High Performance ■Electrical Characteristics Peak gain [dBi] Average XY-plane gain [dBi] YZ-plane ZX-plane TX-H TX-V TX-H TX-V TX-H TX-V ( 64%) ( 69%) ( 64%) 2.2 2.4 2.4 -3.2 -25.4 -3.0 -7.7 -10.9 -12.0 -3.1 -24.6 -2.6 -8.2 -10.8 -10.6 -3.2 -22.7 -3.0 -8.8 -12.3 -6.3 XY-plane +Y +X (-Y) (-X) 5 -5 -15 -25 -35 -45 (+X) 8 7 6 5 4 3 2 YZ-plane +Z +Y +X (+Y) (-Y) (+Z) 5 -5 -15 -25 -35 -45 5400 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 Bandwidth: 1200MHz (VSWR<2) 1 4900 ■Radiation Pattern +Z ■VSWR 4900MHz 5250MHz 5900MHz 10 9 -2.0 -1.6 -2.0 Efficiency [dB] *on Taiyo Yuden’s Evaluation Board ( 54 x 12 mm ) *Element-GND Distance : 1.5 mm 11 (-Z) @5250MHz 5900 @5250MHz (-X) TX-H TX-V (-Z) AH 104N2450D1 1. External Dimensions Confidential (for 2.4GHz & 5GHz) Direction marking : 0.6mmφ 2. Recommended Land Pattern An intestinal pattern code: 1.6mm height 4-digit alpha numeric 2. Recommended Land Pattern 0.9 Feed marking : Input terminal is prescribed 0.5mm□ 1 3 1 2.1 0.9 2.1 0.9 Confidential Recommended Design 3. Recommended 3-1. Recommended Pattern Pattern Layout Layout Design Design More than 21 A C C B 6.5 B 1 Antenna 1.5 Antenna 6 D GND GND 50ΩInput No Ground Area A : More than 30mm B : Less than 5mm C : More than 10mm D : More than 50mm There should be no ground whatsoever within the antenna mounting area (within the red dotted line) including inner layer. 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. Since our recommended board design including ground and keep-out area is preoptimized which requires no matching circuit, it is recommended to follow the provided reference design. Recommended land pattern Example of through hole GND ※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） 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 E E E : More than 10mm Front or Back Side