1 SCOPE
This specification shall cover the characteristics of the dielectric antenna element with the type VTCA915R7865-5
2 OUTLINE DRAWING AND DIMENSIONS
2.1 Appearance: No visible damage and dirt.
2.2 Dimensions
3.ELECTRICAL SPECIFICATIONS
3.1 Performance Characteristics
Items
Content
Center frequency MHz
(with tape on 95*95 mm ground plane)
915±2
-10dB Bandwidth MHz
≥12
V.S.W.R.@ Center Frequency
≤1.5
Axial ratio
≤5.0
Gain(Zenith) (dBic)
5.5 Typical
Polarization Model
R.H.C.P.
Impedance(Ohm)
50
Frequency Temperature Coefficient
≤20ppm/deg.℃
3.2 Impedance Characteristic
4TEST
4.1 Test Conditions
Parts shall be measured under a condition (Temp.:20℃±15℃, Humidity : 65%±20% R.H.).
4.2 Test Jig
5. ENVIRONMENTAL TEST
No.
Item
Test Condition
Remark
5.1
Humidity Test
The device is subjected to 90%~95% relative humidity 60℃±3℃ for 96h~98h,then dry out at 25℃±5℃ and less than 65% relative humidity for 2h~4h. After dry out the device shall satisfy
the specification in table 1.
It shall fulfill the specifications
in Table 1.
5.2
High Temperature Exposure
The device shall satisfy the specification in table 1 after leaving at 105℃ for 96h~98h,provided it would be measured after 2h~4h leaving in
25℃±5 ℃ and less than 65% relative humidity.
It shall fulfill the specifications
in Table 1.
5.3
Low Temperature
The device shall satisfy the specification in table 1 after leaving at -40℃ for 96h~98h,provided it would be measured after 2h~4h leaving in
25℃±5 ℃ and less than 65% relative humidity.
It shall fulfill the specifications
in Table 1.
5.4
Temperature Cycle
Subject the device to -40℃ for 30 min. followed by a high temperature of 105℃ for 30 min cycling shall be repeated 5 times. At the
room temperature for 1h prior to the measurement.
It shall fulfill the specifications
in Table 1.
5.5
Vibration
Subject the device to vibration for 2h each in x、y and z axis with the amplitude of 1.5mm, the frequency shall be varied uniformly between the
limits of 10Hz~55Hz.
It shall fulfill the specifications
in Table 1.
5.6
Soldering Test
Lead terminals are heated up to 350℃±10℃ for 5s±0.5 s with brand iron and then element shall be measured after being placed in natural conditions for 1 h. No visible damage and it
shall fulfill the specifications in Table 1
It shall fulfill the specifications
in Table 1.
5.7
Solder ability
Lead terminals are immersed in soldering bath of 260℃~290℃ for 3s±0.5s . More than 95% of the terminal surface of the device shall be
covered with fresh solder.
The terminals shall be at least 95% covered by
solder.
5.8
Terminal Pressure Strength
Force of 2kg is applied to each lead in axial direction for 10s±1 s (see drawing). No visible damage and it shall fulfill the specifications in
Fig 1
Mechanical damage such as breaks shall not
occur.
TABLE 1
Item
Specification After Test (MHz)
Center Frequencychange
±2.0
-10dB Bandwidth Change
±3.0
6. OTHER
6.1 Caution of use
6.1.1 Please don’t apply excess mechanical stress to the component and terminals at soldering.
6.1.2 The component may be damaged when an excess stress will be applied.
6.1.3 This specification mentions the quality of the component as a single unit. Please insure the component is thoroughly evaluated in your application circuit.
6.2 Notice
6.2.1 Please return one of this specification after your signature of acceptance.
6.2.2 When something gets doubtful with this specification, we shall jointly work to get an agreement.
