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GPS Antenna

                         

  1. GPS Antenna and Glonass
    Antennas are an essential part of all wireless systems. Laipac manufactures a variety of high quality antennas for GPS, GLONASS, cellular and Wireless-Link. The antennas include a Low Noise Amplifier to offer finely tuned operation in the harshest environments. We recommend our customers to use these antennas with our modules. These antennas are specially designed to complement our electronics equipment and guarantee best possible performance. The cost effective & robust design of Laipac antennas provides a time-to-market best choices for AVL and timing applications.
                          
  2. GPS Antenna Calibration
    The precise point whose position is being measured when a GPS baseline is determined is generally assumed to be the phase center of the GPS antenna. However, the phase center of a GPS antenna is neither a physical point nor a stable point. Differential GPS solutions are used routinely to provide geodetic positions with precisions that are often as good as a few millimeters. These positions are typically obtained from a baseline vector that extends from a station whose position is known and constrained to a station whose position is being determined.
                      
  3. A Comparison of Amplifier GPS Antenna
    The GPS-700 antenna series incorporates NovAtel’s patented Pinwheel™ technology and is designed to enhance the performance of the OEM4G2 and OEM4-G2L GPS engines. The GPS-700 series, including the single frequency GPS-701 and the dual frequency GPS-702, takes advantage of Pinwheel™ technology to provide exceptional multipath rejection. With a gain roll off to the horizon of 13 dB for the L1 signal and 11 dB for L2, the GPS-700 provides performance comparable to that offered by a typical choke ring and antenna combination. Signals arriving from low elevation angles are attenuated, virtually eliminating position errors due to troublesome signal reflections.
                         
  4. The GPS Antenna with converter Unit 
    The GPS antenna combines a planar antenna and a frequency converter, which translates the high-frequency phase-modulated spread spectrum signal of the GPS system to an intermediate frequency. This way a standard coaxial cable (e.g. RG58) can be used for the connection with the GPS clock and a distance of up to 300 meters (with RG58) or even 600 meters with a low-loss cable type like RG213 between receiver and antenna is possible without requiring an additional amplifier.
                      
  5. The GPS Antenna Mobile
    The upgraded version of SM-18, MK-18 is the most compact GPS antenna available with low power consumption on the current market. Its state-of-the-art technology allows for miniature without. With good coverage almost all the way to the horizon, it performs excellently in foliage or urban canyon environment -- even in the presence of electromagnetic interference! Featuring diminutive and rugged enclosure and unparalleled performance, MK-18 is compatible with almost every GPS receiver model, especially the GPS PDA on the markets and provides an excellent alternative for a vast range of GPS applications including AVL, Vehicle Navigation, Aviation, and Military.
                      
  6. A GPS Helix Antenna Construction 
    The GPS Patch antenna design published in the Oct, 1995 issue of QST magazine, and also placed on the Internet, has the advantages of being cheap, compact, and easy to build. Its main limitation is that it does not track satellites very well at low angles near the horizon. The GPS SPS (Standard Positioning Service) specification calls for tracking down to 5 degrees above the horizon, which cannot be met with a patch antenna design. After building and testing several patch antennas, I decided to try to design something better.
              

                         

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