Confidential Antenna Design Guide AH 316M157501 Ver. 1.1 Confidential 3.2x1.6x0.5mm 1.5GHz: AH 316M157501 PCB (GND) PCB (GND) Keep out area （No GND Area） Keep Out Area Only 5 x 6mm(30m㎡) Taiyo Yuden Original Technology （No GND Area) (This minimal area provides the best performance) Antenna Layout Middle of PCB Edge Radiation Pattern Directivity 1.5GHz Multilayer RadiEdge Antenna AH 316M157501 ■Shapes L= W= T= Actual data ■Feature 3.2 ± 0.15 mm 1.6 ± 0.15 mm 0.5 ± 0.1 mm Efficiency : -0.8dB ( 83%) Peak Gain : 2.4dBi * Ultra Small * Low Profile * High Performance * Small Keep-out Area * Linear Polarization Average Gain : 0.7dBi (ZX plane-Vertical polarization) -2.3dBic (ZX plane-RHCP) ■VSWR 11 ( 83%) *on Taiyo Yuden’s Evaluation Board Peak gain ( 80 x 20 mm ) Average XY-plane *antenna keep out area : 6 x 5 mm gain YZ-plane ZX-plane (-Y) unit: dBi (+X) TX-H TX-V TX-H TX-V TX-H TX-V TX-H=Horizontal polarization TX-V=Vertical polarization 2.4 [dBi] -2.5 -12.5 -1.7 -31.0 -33.7 0.7 LC RC LC RC LC RC -0.6 [dBic] -5.1 -5.1 -4.7 -4.7 -2.3 -2.3 LC=Left-handed circular polarization RC=Right-handed circular polarization 8 7 6 5 4 3 2 1 1325 1575 Frequency [MHz] XY-plane YZ-plane ZX-plane +Z +Z +Z linear polarization (TX-H,TX-V) 5 (-X) -5 -15 -25 -35 -45 Bandwidth: 90MHz (VSWR<2) linear polarization circular polarization 10 -0.8 9 @1575MHz Efficiency [dB] circular polarization linear polarization (LC,RC) (TX-H,TX-V) circular polarization linear polarization (LC,RC) (TX-H,TX-V) +Y +X 5 -5 -15 -25 -35 -45 (+Y) (-Y) unit: dBic unit: dBi 5 (+Z) -5 -15 -25 -35 -45 (-Z) @1575MHz -0.6dBic (circular polarization) ■Electrical Characteristics ■Radiation Pattern ( for GPS ) Confidential 5 -5 -15 -25 -35 -45 (+Y) (+X) unit: dBic unit: dBi 5 (+Z) -5 -15 -25 -35 -45 (-Z) @1575MHz circular polarization (LC,RC) +Y +X 1825 +Y +X 5 -5 -15 -25 -35 -45 (-X) unit: dBic AH 316M157501 (for GPS) 1. External Dimensions 1.1.External 外観寸法 Dimensions Confidential 2. Recommended Land 2. Recommended 推奨ランドパターン Land Pattern Pattern Direction mark (1) (2) Unit : mm (1) (2) Unit : mm Terminal No. (1) (2) Terminal Name FEED GND Confidential Recommended Design 3-1. Recommended Pattern Layout Design Example of Land Pattern Design 1 0.5 5 No Ground Area There should be no ground whatsoever within the antenna mounting area (within the red dotted line) including inner layer. Matching circuit (1005 chip : (HK1005 , EVK105) GND 3.3 Ex. 6 x 5mm 0.5 0.5 1 1.2 0.5 1.2 1 Ex. 6 x 5mm 5 3.3 Example of Land Pattern Design 2 GND 50ΩInput 6 Unit : mm 6 Unit : mm Recommended Design Confidential 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 GND ◎ Do not arrange the surface and inside of layer pattern near the antenna mounting area. 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. No metal area Front or Back No metal area Side