Product Specification (Preliminary) MARUWA Antenna Products MWSL1203C

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2 Page 1/4 1. Scope This specification applies to the MARUWA GPS L1 antenna. 2. Specifications Part Number Type Connector Type Centre Frequency Polarisation Gain Efficiency Efficiency Beamwidth Bandwidth (3dB) Axial Ratio VSWR Impedance Operating Temperature Overall Dimensions Weight 3. Dimensions Minimum Typical Maximum (MARUWA dwg No: MEFP1203C ) Dielectric-loaded Quadrifilar Helix SMA (Male) Right-hand Circular Polarised % 50% > <1.5 <2.0:1 2.3: Refer to mechanical drawings 14 Unit MHz dbic at zenith Total spherical Upper hemisphere Degrees MHz at zenith C mm grams Side View Bottom View Notes: 1. MARUWA Europe assembly drawing MEFP1203C applies. 2. Units in mm. 3. Dimensional tolerances not stated on drawing: ± 0.5mm. 4. The has an integrated water-seal o-ring feature on the baseplane. Base Detail Feb Issue of the first edition K.Inagaki F.Frimpong O.Leisten

3 Page 2/4 4. Product Description The rugged GPS L1 antenna is a durable plastic over-moulded dielectric-loaded product using MARUWA s unique materials technology to provide high efficiency in a small size. It provides good performance in demanding environments and is particularly suitable for applications where: * The device is hand-held, body-worn, or otherwise surrounded by materials of high relative dielectricconstant which would de-tune other antennas. * The antenna is externally mounted in close proximity to other antennas: for example on top of a tactical radio close to a transmitting antenna. * The device is used in a harsh environment, is subjected to force, dust and moisture. * The orientation of the device is random. The antenna is balanced, which isolates it from the device ground enabling it to reject common-mode noise present on the device ground-plane. The construction and materials of the antenna constrain its near-field region to occupy a very small volume so that materials near the antenna cause negligible de-tuning effects. Therefore the antenna maintains its pattern and efficiency in the presence of dielectric loading. As a dielectric-loaded antenna the has a stable filtering effect; attenuating signals from common cellular and ISM frequency bands by as much as 30dB without external filtering. The has a built-in DC block to enable direct connection to receivers with a DC voltage on their antenna signal input pin. Typical Elevation Gain Pattern Typical Return Loss A major advantage of this MARUWA dielectric-loaded antenna technology is its immunity to de-tuning in close-proximity to human tissues and other in-use causes of dielectric-loading. The antenna retains efficiency and polarization near the human body. Conventional antennas may lose 5-10dB of gain in similar circumstances. Though it is electrically isolated from the device ground plane, through the action of an integrated balun, the rugged antenna can be expected to increase efficiency by up to 100% when mounted over a ground plane due to constructive near-field signal reflections. Configuration and orientation of the ground plane with respect to the antenna can affect results, but efficiency will not decrease. The dielectric-loaded structure of the antenna also causes the match-performance not to change significantly when is close proximity to the human body. Typical match responses are shown on a 50 normalised Smith chart for free-space and conditions where a phantom hand is placed within 10mm from the antenna. The red circle showns the VSWR 2.3:1 specification limit Nov Inclusion of connection details K.Inagaki G.Krystallis O.Leisten Feb Issue of the first edition K.Inagaki F.Frimpong O.Leisten

4 Page 3/4 Immunity from bio-loading impairments can be demonstrated through return-loss measurements. The S 11 response is remarkably unchanged as the phantom hand is brought closer to the antenna. The antenna also has a sharp close-in frequency response and useful attenuation of the major interference bands. Return Loss For Various hand Loading Conditions Wide-Band Frequency Response 5. Connection Details The GPS L1 antenna is designed to form a water-seal at two points when it is fitted to an SMA bulkhead female SMA connector as shown in the cut-away diagram. This method of connection requires careful attention to the dimensional details of the connector and the surface texture of the panel water-seal flange on the device housing. The cut-away diagram shows how the antenna is attached to the correctly dimensioned panel connector using a connection torque of 7 lb inch (0.8 Nm), such that a water-tight seal is made between the antenna skirt and the device panel. The arrangement also provides the conventional seal within the SMA connector interface Feb Issue of the first edition K.Inagaki F.Frimpong O.Leisten

5 Page 4/4 The correct dimensions of the SMA female connector interface are present in the reference connector: Duplex CSA part number S ROHS which has been designed to place a water-sealed mechincal reference against the device panel. A simplified diagram of this particular connector, with critical dimensions, is shown below. Please contact the supplier for full details of this part or other part options which have the correct external interface dimensions. Duplex CSA can supply a variety Duplex CSA part number S ROHS (and other options with identical external features) can be supplied by Duplex CSA Ltd: sales@duplexcsa.com. This company can be contacted during U.K. working hours using telephone number +44(0) Notes 1. The contents of this document assure the characteristics and quality of the antenna components themselves. 2. Please ensure that they work correctly in the installed configuration and method of use of your equipment. 3. Maruwa is pleased to accept orders subject to a minimum order quantity (MOQ) of 200 units Feb Issue of the first edition K.Inagaki F.Frimpong O.Leisten