Johanson Technology's 7-band, single Antenna Solution for:Cellular LTE NB IoT/CAT M1, Sub GHz, GPS/GNSS, and 2.4GHz

As the demand for a compact, all-encompassing solution for IoT connectivity continues to grow, we've developed a multi-band flexible solution using one antenna (p/n 0830AT54A2200). This antenna can resonate at multiple frequencies. For it to achieve high efficiency and bandwidth, it requires antenna matching networks to cover Cellular/SubGHz/GPS-GNSS/2.4GHz bands.
All characterizations and gains we measured on a small, 51x51mm PCB (including the antenna clearance)
Below is a representation of the total antenna effective area and 2 switches required for this solution:
IoT Multi band Antenna Solution

In an effort to create a small-footprint antenna solution for cellular LTE, NB-IoT, geo location GPS/GNSS, and 2.4GHz frequency spectrums, Johanson Technology has created a single antenna matching solution to cover all relative frequency bands. In addition to simplifying device bill-of-materials, costs can be reduced by re-using the same flexible solution in various applications.
By combining Johanson's 0830AT54A2200 antenna with 2 channel switches, the designer has the ability to cycle through all usable channels mentioned above.
Based on the number of channels required, we recommend the use of 2 (two), SP6T switches to cover the entire cellular spectrum as well as GPS/GLONASS and 2.4GHz Bluetooth or WiFi. In our example, the Qorvo RFSW6062 switch is used. The Hexawave HWS556 is a substitute performance-wise, but it is not interchangeable. You can find a link to more information on the final page.
Antenna Datasheet: https://www.johansontechnology.com/datasheets/0830AT54A2200/0830AT54A2200.pdf
Qorvo RFSW6062 Switch: https://www.qorvo.com/products/p/RFSW6062
Hexawave HWS556 Switch: http://www.hw.com.tw/PDF/Switch/HWS556_V2.pdf

PCB size and Recommended Antenna Keep-out Area

PCB size and Recommended Antenna Keep-out Area closeup

Would you like the layout file for this?
Contact our RF Applications Engineers to review your layout at: https://www.johansontechnology.com/ask-a-question

Matching Network Topologies with Switches

Channel Frequency (MHz) L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 C1
1 700 - 750 11nH 30nH
2 750 - 800 10nH 27nH
3 791 - 894 8.2nH 22nH
4 880 - 960 6.9nH 18nH
5 1574 - 1577* 3.0nH 0.9pF
6 1710 - 2200 2400 - 2480 24nH
*Channel 5 may be tuned for GLONASS operation (1598-1609MHz)

Would you like us to review your layout?
Contact our RF Applications Engineers to review your layout at: https://www.johansontechnology.com/ask-a-question

Measured Return Loss by channel 700mhz-750mhz

Measured Return Loss by channel 750mhz-800mhz

Measured Return Loss by channel 791mhz-894mhz

Measured Return Loss by channel 880mhz-960mhz

Measured Return Loss by channel 1.574ghz-1.577ghz

Measured Return Loss by channel 1.710ghz-2.200ghz

0830AT54A2200 Radiated Efficiency on 51x51mm boardPerformance based on example PCB with dimensions 51mm x 51mm