Specifications: The report mainly provides the test status of various electrical performance parameters of DIV&GPS&WIFI antenna of Android version with large keys. E.g.
As shown in Figure 1 below)
2.1 Specifications
Android version of DIV&GPS&WIFI antenna operating frequency band 824-960, 1710-2690mhz & 2400-2500, 1575.42mhz.
2.2 Antenna matching circuit
Big button Android version DIV&GPS&WIFI antenna matching motherboard comes with matching.
2.3 VSWR (Standing wave Ratio) test
A. Test Settings
The VSWR test device is connected successively: 8714ET network analyzer →50 ohm coaxial Cable→120mm long copper tube →
Test fixture.
Treatment of test fixture: From the 50 ohm test point of the antenna, a cable leads to the SMA connector, which is connected to the copper tube with a choke.
Then connect the other devices in turn.
