PA-25

PA-25

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Ceramic Patch Antenna
Model: PA Antenna

This microwave dielectric antenna elements and its series are designed to be used for GPS device. The patch antenna with compact size incorporates a rectangular micro-strip design for GPS C/A right-hand circular polarization wave reception, featuring low RL, low Axial Ratio but high gain, etc.

Pin length and outer diameter

Length: 1.6mm (Can depend on the customer demand change, the suggestion length1.9mm & 3.0mm)
Outer diameter: 0.8mm

Structure and Material

NO. Description Structure and Material
1 Antenna Substrate Dielectric Ceramics
2 Pin Copper, Tin Plated
3 Electrode Ag Plated
4 Ground Base Ag Plated
5 Adhesive type 3M

Environment Performance

Item Requirement Time
Humidity +40±2°C,90~95%R.H. 96 Hours
Temperature Life +80±3°C -40±1°C 24 Hours
Thermal Shock Cycle:-40°C 30min, +85°C 30min 5 Cycles

Mechanical Performance

Item Requirement
Drop Shock The device dropped into the hard wooden board from the height of 30cm for 3 times each facet of the 3 dimensions of the device.
Vibration The device applied to the vibration of 10 to 55Hz with amplitude of 1.5mm for 2 hours each in X,Y and Z directions.

Electric Specification

Satellite frequency 1575.42MHz
Polarization Right-hand Circular
V.S.W.R. 1.5 MAX.
Return Loss -15dB MAX.
Axial Ratio 5dB MAX.
Impedance 50Ω

 

Model Center Frequency
(MHz)
Band width
(MHz)
VSWR Gain
(dBi)
Dimension
(mm)
Ground Plane
(mm)
PA25254 1585 ≥10 ≤1.5 4.5 25×25×4 70×70
1575 ≥10 ≤1.5 2.5 25×25×4 30×30
PA25252 1575 ≥8 ≤1.5 2.0 25×25×2 30×30
PA18184 1578 ≥6 ≤1.5 1.5 18×18×4 20×20
PA18182 1580 ≥5 ≤1.5 1.0 18×18×2 20×20
PA15154 1575 ≥5 ≤1.5 0.5 15×15×4 18×18
PA12124 1575 ≥5 ≤1.5 -1.0 12×12×4 15×15
PA10104 1582 ≥5 ≤1.5 -2 10×10×4 12×12

Number: PA-25252-1575
Antenna size: 25*25*2
Tolerance ±0.2mm

Electrical Characteristics:

Item Specification Tolerance
Range of Receiving Frequency 1575 ±2.5
Center Frequency @ 30*30mm Ground Plane 1575 ±3.0
Band Width @ Return Loss ≦ -10dB ≥ 8 ±0.5
V.S.W.R. @ Center Frequency ≤1.5 ±0.5
Peak Gain @ 70*70mm Ground Plane 4.0 Typical --
Axial ratio ≦3 --
Polarization Right-Handed Circular --
Impedance 50 --
Frequency Temperature Coefficient 0±10 --

Return Loss and Smith-chart:

Number: PA-25254-1580
Antenna size: 25*25*4
Tolerance ±0.2mm

Electrical Characteristics:

Item Specification Tolerance
Range of Receiving Frequency 1575 ±2.5
Center Frequency @ 70*70mm Ground Plane 1580 ±2.0
Band Width @ Return Loss ≦ -10dB ≥ 10 ±0.5
V.S.W.R. @ Center Frequency ≤1.5 ±0.5
Peak Gain @ 70*70mm Ground Plane 4.5 Typical --
Axial ratio ≦3 --
Polarization Right-Handed Circular --
Impedance 50 --
Frequency Temperature Coefficient 0±10 --

Return Loss and Smith-chart:

Number: PA-25254-1616
Antenna size: 25*25*4

Electrical Characteristics:

Item Specification Tolerance
Center Frequency @ 70*70mm Ground Plane 1616 ±3.0
Band Width @ Return Loss ≦ -10dB ≥ 10 ±0.5
V.S.W.R. @ Center Frequency ≤1.5 ±0.5
Peak Gain @ 70*70mm Ground Plane 4.5 Typical --
Axial ratio ≦3 --
Polarization Right-Handed Circular --
Impedance 50 --
Frequency Temperature Coefficient 0±10 --

Return Loss and Smith-chart: