WiFi-FES (Frequency Shifter)

The WiFi-FES is a unique radio front-end subsystem that provides bi-directional frequency shifting of Wi-Fi signals. It leverages the Doodle Labs Prism® technology to enable the use of state-of-the-art, spectrum efficient Wi-Fi technology in the proprietary bands. Due to it’s flexible architecture, the WiFi-FES can be used like Lego building blocks to develop a wide variety of new wireless modems. The WiFi-FES is developed to be used with the newer CPU boards that have built-in Wi-Fi radios. The WiFi-FES helps to improve the RF characteristics of these integrated radios.
Prism-FES Block Diagram

The WiFi-FES provides bi-directional frequency shifting of complex, multi-carrier OFDM/MIMO signals (up to 256QAM for 802.11ac). It integrates state-of-the-art super-heterodyne bi-directional frequency converter, power amp, harmonic/OOBE suppression circuit, receiver LNA, high Q filters and auto Rx/Tx switching functions in the industry’s smallest, lightweight form factor. The WiFi-FES provides complete transmit and receive paths from radio to the antenna with 50 Ohms input/output matched RF ports.

System Integration

As shown in the block diagram, the modular nature of the WiFi-FES makes it a very simple system integration with CPU boards. Only the RF signal is required from the radio and WiFi-FES works as an in-line module to the antenna. The WiFi-FES can work from a wide input voltage range of 6-42V. They are compact in size and provide mounting flexibility inside the modem for better system thermal management.

Available Models

We usually configure the WiFi-FES to meet the specific project requirements and sell them in wholesale quantities. They are not available off-the-shelf and in small quantities. Below table lists few of the completed projects. Please take a look at the General Specifications to better understand the design block capabilities.  Please contact us for samples request and provide your project information. We will be happy to work with you.

ANT Freq (MHz) Wi-Fi Radio Freq (MHz) Description Model No.
 902-928 2412-2437 ISM 900 MHz band, Americas, Australia, New Zealand, Korea, Israel
1 stream, 27 dBm, LongRange and Extended temp Rugged models
    2×2 MIMO, 30 dBm, LongRange and Extended temp Rugged models F*-915-2425-2
 2500-2700  5200-5400 BRS/EBS Communication Band, Broadband Wireless Access Band, USA, Europe
2×2 MIMO, 30 dBm, LongRange and Extended temp Rugged models
3400-3800 5450-5850 Broadband Wireless Access Band – Europe
1 stream, 25 dBm, LongRange model and Extended temp Rugged models
    2×2 MIMO, 28 dBm, LongRange and Extended temp Rugged models F*-3600-5650-2