The application shall apply for antenna unit which shall be used for marine AIS systems & radio car AVL and fleet management systems. The combination of high gain GPS antenna and a low profile covert VHF antenna is highly ideal for these applications that require durability, small in size, covert installation and rugged construction.
1. Physical condition: (1) Dimension: 71.5mm (L) x 49.5mm (W) x 27mm (H). (2) Weight: 50 grams (excluding cable & connector). 2. Environmental conditions: (1) Operation temperature: -40°C to +85°C. (2) Storage temperature: -40°C to +100°C. (3) Relative humidity: 95% non-condensing. 3. Cable & connector: (1) Cable: 5 meter RG174/U (standard) cable, other length ailable. (2) Connector available: BNC,TNC,FME (to be adapted), GT5, CX(OSX), SMA, SMB or SMC in straight or right angle. (3) Optional adapters: universal connector adapter (FME to TNC/BNC/SMA/SMB/MCX). 4. Antenna element: (1) Eenter frequency: 1575.42 MHz +/-1.023MHz. (2) Polarization: R.H.C.P.(right handed circular polarization). (3) Absolute gain @ zenith: 3 dBic Typ. (4) Gain: 90 o-2.0dBi min. 20o - 5.0dBi min. (5) Mounted on the 60mm x 60mm square ground plane. (6) Axial ratio: 90o-3.0dB max. (7) Mounted on the 60mm x 60mm square ground plane. 5. Low noise amplifier: (1) Center frequency: 1575.42 MHz +/- 1.023 MHz. (2) Gain: 28+/-4.5dB. (3) Bandwidth: 10 MHz min. @S11£-10 dB. (4) Noise figure: 1.5dB Typ. (5) Filter: 25dB @ fo± 50MHz; 35dB @ fo± 100MHz. (fo=1575.42MHz). (6) Supply voltages: 2.5 ~5.5V DC. (7) Output impedance: 50 ohm. (8) Output VSWR: 2.0 max. (9) Overall performance (antenna element, LNA & cable). (10) Frequency range: 1575.42 +/-1.023 MHz. (11) Gain: at 90o 30 ± 4.5dBi (cable loss). (12) Mounted on the 60mm x 60mm square ground plane. (13) Output impedance: 50ohm. (14) VSWR: 2.0 max. (15) Current consumption: 2.5V: 6.6mA/ 3V: 8.6mA/ 4V: 12.6mA/ 5V: 16.6mA.