|
 |
|
| |
| |
| |
Introduce
Built on patented PowerHelix® filtering
antenna technology, the SL1200 GPS antenna
provides high performance in difficult GPS applications
using a quadrafilar helix design.The SL1200 antenna is balanced, which isolates it from the device and enables the
antenna to reject common mode noise resident on the device ground plane. The construction
and materials of the antenna constrain its near-field to a very small volume, therefore materials
near the antenna have negligible de-tuning effects and the antenna maintains its pattern and
efficiency in the presence of dielectric loading. As a dielectrically-loaded antenna, the SL1200
acts as its own filter, attenuating signals from common GSM and ISM frequencies by as much as 30dB
without external filtering.The SL1200 antenna builds on the industry-leading performance of the SL1100 (GeoHelix-SMP)external
GPS antenna, reducing its size by 30%, making it even simpler to embed in a product. The antenna is
deployed with a plastic tuning sleeve to ensure on-frequency performance.
．GPS Passive Antenna
．GPS L1-band quadrifilar helix antenna
．Integral balun
．Requires no ground plane
．High isolation from platform-rejects common-mode noise Negligible proximity de-tuning
．Up to 28dB filtering of common cellular frequencies
．Constrained near-field-doesn't interact with nearby components or the user
．Strong circular polarization
．Broad beam width-excellent near-horizon reception
．Stable impedance
．Predictable performance in all modes of use
．the device is handheld, body-worn, or otherwise surrounded byhigh-dielectric materials that would
de-tune conventional antennas
．the antenna is tightly integrated with other antennas, e.g., Bluetooth®/GPS receivers or
GPS/GSM mobile phones
．there are tight constraints on the size of the device or the amount of space allocated to ground planes
．the orientation of the device is random
．the antenna will be embedded in the device.
Specifications
．Frequency: 1575.42MHz ± 2MHz
．Polarization: RHCP
．Gain: -2.8dBic@zenith
．Efficiency:27%(Total spherical)
．Efficiency:50%(Upper hemishpere)
．Beam width: > 120°(typical)
．Beam width(3dB): 20MHz
．Axial Ratio: < 1.5@zenith
．VSWR: < 2:1 (typical)
．Impedance: 50
．Op. Temp.: -40℃ to +85℃
．Element Dim.: 10.1mm(dia) x 17.8mm(length)
．Overall Dim. (w/sleeve): 12mm(dia) x 14mm(width) x 22mm(length)
．Weight:7g
Order Info.
| Item |
Model |
Description |
Part No. |
| 1 |
SL1201CS |
|
04053-0200 |
| 2 |
SL1202CS |
|
04053-0210 |
|
*For more detailed information, please click here. |
| |
| |
|
|
|
