ASGP.1575.10B.4.A.01

SPECIFICATION Part No. : ASGP.1575.10B.4.A.01 Product Name : 10mm SMT 28dB Active GPS Patch Antenna Features : Unique patent pending SMT GPS active patch High performance 28dB LNA Ultra low power consumption RoHS compliant Photo SPE-11-8-104/A : Page 1 of 11 1.0 Introduction The patent pending revolutionary tiny but powerful active SMD GPS patch antenna allows for optimal performing GPS by combining the ceramic patch, SAW, LNA, and feed pad in one integral package. Horizontally mounted on a board as any other components, GPS device designers no longer need to compromise in performance. This antenna takes up less footprint and volume than even the smallest poorly performing metal, ceramic and pcb linear antennas, which have an automatic drop of 3dB gain (half the GPS signal strength) compared to this antenna. Nothing works better at this size. The right hand circular polarized patch is ideally matched to the GPS signal, tuned for maximum gain, minmal axial ratio. The SAW is placed in front of the LNA, helping prevent saturation due to nearby radio transmitters, and the possibility of radiated spurious emissions through other radio systems. The LNA placed directly underneath the patch feed ensures the signal is boosted before ambient noise can enter the transmission lines between the antenna and the GPS receiver module on the board, a unique advantage over all other on-board antenna technology. It has a wide-band input voltage between 1.8V to 5.5V to cater for all electrical systems. The unique SMD structure enables pick and place and reflow soldering onto boards in high volumes, with highest reliablity, compared to traditional cabled solutions. All that is needed is to run a 50 Ohm co-planar waveguide to the SMD GPS receiver module. The patch antenna can be tuned for each device environment if necessary. Patented 10mm Vertically mounted SMD active GPS AP.10 series antennas are also available from Taoglas. SPE-11-8-104/A Page 2 of 11 2.0 Performance Measurement 2.1 Block Diagram This antenna system consists of two functional blocks, the LNA portion and the patch antenna. ANTENNA SAW Filter LNA LNA RF OUT/DC IN 3.0 Specification 3.1 Rated Environmental Conditions No Parameter Specification 3.1.1 Operation Temperature -40°C to + 85°C 3.1.2 Storage Temperature -40°C to + 85°C 3.1.3 Relative Humidity 40% to 95% 3.2 Electrical Specifications No Parameter Specification 3.2.1 Input Voltage Min:1.8V Typ.: 3.0V Max: 5.5V SPE-11-8-104/A Page 3 of 11 3.3 Electrical Specifications- Antenna No Parameter Specification 3.3.1 Frequency Range 1575.42MHz +/- 1.023 MHz 3.3.2 Gain Typ. -7dBic @ Zenith 3.3.3 Polarization RHCP 3.3.4 Axial ratio Max 4.0dB@zenith 3.4 Electrical Specifications- LNA No Parameter 3.4.1 Frequency Range 3.4.2 Output Impedance Specification 1575.42 ± 1.023 MHz 50Ω F0=1575.42MHz 3.4.3 Outer Band Attenuation F0±30MHz 5dB min F0±50MHz 20dB min F0±100MHz 28dB min 3.4.4 Pout at 1dB Gain Compression point 3.4.5 Output VSWR -6 dBm Typ. 2.0 Max LNA Gain, Power Consumption and Noise Figure Noise 3.4.6 Voltage LNA Gain(Typ) Power Consumption(mA) Typ Figure(Typ) Min 1.8V 20dB 4.5mA 2.8dB Typ 3.0V 28dB 9mA 2.8dB Max 5.5V 30dB 18mA 3.0dB SPE-11-8-104/A Page 4 of 11 3.5 LNA Gain and Out Band Rejection @3.0V SPE-11-8-104/A Page 5 of 11 3.6 LNA Noise Figure @3.0V 3.7 Connection No Parameter Specification 3.5.1 Connection SMT via solder pads 3.8 Electrical Specifications- Overall No Parameter Specification 3.6.1 Frequency Range 1575.42MHz +/- 1.023 MHz 3.6.2 Gain At 90° at 3.0V 21±4dBic 3.6.3 Output Impedance 50Ω 3.6.4 VSWR 2.0 Max. SPE-11-8-104/A Page 6 of 11 4.0 Technical drawing SPE-11-8-104/A Page 7 of 11 4.1 Suggested Layout SPE-11-8-104/A Page 8 of 11 5.0 Radiation Patterns XZ Plane SPE-11-8-104/A Page 9 of 11 YZ-Plane SPE-11-8-104/A Page 10 of 11 XY-Plane SPE-11-8-104/A Page 11 of 11