How To Match Antennas to Your Design

Suntsu Electronics- How To Match Antennas to Your Design

The International Data Corporation (IDC) predicts that there will be over 40 billion connected devices by 2025: up from the 31 billion today. Most connected things will do so over wireless. The key feature of wireless systems are antennas and the interfacing RF interconnects. If chosen correctly, antennas lead to high performance wireless devices. However, when overlooked, it can lead to system bottlenecks and instability. When considering your antenna choice, there are four factors that should be considered and are addressed below.

1. What is the intended use?

2. Wireless standard or custom build?

3. Impedance matching

4. VSWR

1. What is the intended use?

When choosing antennas, the questions that needs to be answered are where and how the antenna will be used. If an application requires maximum range and signal strength, then an external antenna would be ideal. For all other applications, an internal antenna can be used and tuned accordingly to section 2.

2. Wireless standard or custom build?

The table below shows the wide array of wireless standards provided by Suntsu. 

For custom build inquiries please contact our Sales & Engineering team.  

Suntsu Electronics- How To Match Antennas to Your Design - Chip Antenna

Suntsu Chip Antennas

Suntsu Electronics- How To Match Antennas to Your Design - PCB Antenna

Suntsu PCB Antennas

Suntsu Electronics- How To Match Antennas to Your Design - Indoor Antenna

Suntsu Indoor Antennas

Suntsu Electronics- How To Match Antennas to Your Design - Outdoor Antenna

Suntsu Outdoor Antennas

Suntsu Electronics- How To Match Antennas to Your Design - Patch Antennas

Suntsu Patch Antennas

Suntsu Electronics- How To Match Antennas to Your Design - NFC

Suntsu NFC Antennas

Frequency Ranges (MHz)Antenna TypeApplications
ChipPCBIndoorOutdoorPatchNFC
13.56 X



NFC
13.4X
14.17 X
14.2 X
14.23 X
433X




ISM
433-434.79 X
433.05-434.79, 450-470 X
433.05-434.79, 863-870, 902-928 X
863-870 XX
863-870, 902-928 X
902-928 XX
689-960, 1710-2690MHz X








Cellular
698-960, 1710-2170, 2300-2400, 2490-2690 X
698-798, 824-960, 1710-2170, 2300-2400, 2490-2690 X
824-960, 1710-2170 XX
824-960, 1710-2170, 2400-2500 X
824-960, 1710-2170, 2400-2500, 2490-2690 X
746-960, 1710-2170MHz X
704-960, 1427.9-1575.42, 1710-2170, 2400-2690 X
698-960, 1427.9-1510.9, 1559-1610, 1695-2200, 2300-2700 & 3400-3600MHz XX-
1560-1606 X


GPS / Glonass
1575.42 X
1575.42, 2400-2500 X
1575.42, 2400-2500,5150-5850 X
1575.42MHz & 1598~1606MHz, X
2400-2500 XXXX



WiFi
2400-2500, 4900-5900 X
2400-2500, 5150-5850 XX
5150-5850
5150-5900 XX
2400-2500, ground plane 80*40
1880-1930XDECT
GPS + GSM + WiFi (1575.42MHz, 2.4GHz, 824~960, 1710~2170) X




GPS + LTE + WiFi
GPS + LTE + WiFi (1575.42MHz, 698~960MHz, 1710~2690MHz, 2.4GHz, 5.0GHz) X
Dual band WIFI (2400~2483.5, 4900~5825MHz)
GPS + LTE + WiFi (698-960MHz, 1710-2700MHz, 2400-2484MHz, 5150-5850MHz) X
GPS + LTE (1572-1610MHz, 698-960MHz, 1710-2690MHz X

3. Impedance matching

Successful impedance matching allows for maximum power transfer and minimal signal reflection from the load. Therefore, if the cable, connectors, and antenna all have matching impedance levels, they will be able to deliver the maximum power, resulting in greater efficiency throughout the system. 

External antenna = Antenna + RF Cable + Connector 

PCB antenna = Antenna + Connector 

Chip antenna = N/A (soldered directly on the board) 

4. VSWR

VSWR (Voltage Standing Wave Ratio) is a measurement of efficiency. It looks at how efficiently power is sent from a power source to the load. It can be measured with the calculation VMAX/VMIN where VMAX is Maximum Voltage and VMIN is Minimum Voltage. The lower the VSWR the more efficient the power distribution across the system. Although it is important for an antenna to have a low VSWR value, this becomes irrelevant if it is not matched to the rest of the system. A system operates at the speed and efficiency of its weakest link. Therefore, if the cable and connector do not have matching or lower VSWR ratings as the antenna, then the system will not operate at the antenna’s rated VSWR. 

A combination of these factors translates to a better performing and more balanced system. 

Contact us if you would like to learn more.

Menu