Technical Education Webinar Series
Title: An Innovative Differential Delay Shifter Design with Applications for Beam Steering Antennas
Date: October 22, 2020
Time: 8am PT / 11am ET
Sponsored by: Menlo Micro
Presented by: Marten Seth, Senior Systems Applications Engineer
Phase Shifters have traditionally enabled cellular base stations to steer their signals in the right direction. This delivers critical performance requirements of increased capacity, coverage, and signal strength.
The growing momentum in C-Band spectrum rollout for 4G and 5G networks will demand advanced multi-array antennas utilizing beam steering techniques to deliver the expected quality of service and high data rates for cellular, enterprise, and industrial IoT applications. A beam steering antenna for the 3.5 GHz CBRS band has been developed by Menlo Micro utilizing their breakthrough “Ideal Switch” that is incorporated into a patent-pending differential delay shifter. By incorporating SP4T switches and delay lines with standard SMT packaging, the result is a highly compact and integrated form factor for the delay shifter. This novel approach is an all-electronic design that replaces large and bulky mechanical phase shifter components and motors often used for remote tilt in traditional base station antennas. This differential delay shifter configuration allows for both horizontal and vertical antenna beam steering.
The Ideal Switch driving the differential delay shifter and antenna array achieves a very high linearity IP3 of greater than 85 dBm, low insertion loss, and an ultra-low supply current of less than 100 µA. Another key advantage of using this switch technology is a 1000x switching speed enhancement over traditional mechanical designs. There are no complex mechanical actuators or motors and thus very high reliability and system lifetime. This differential topology has additional advantages over conventional switched phase shifters which includes true differential time delay and compatibility with existing antenna array designs.
This webinar describes the design and performance of the differential delay shifter driving a beam steering antenna array, and the contribution of the Menlo Micro Ideal Switches to the measured test results.
As part of Menlo’s Application Engineering Team, Marten has played an integral role during his three years in leading customer applications designs. Marten has extensive start-up experience in the international RF and wireless semiconductor markets, including significant worldwide sales and joint project experience in both mobile device and infrastructure markets and interface standards (mobile devices, antenna, air interface/PHY, stack and MIPI chip to chip). Marten has a Master’s degree in Electrophysics from KTH Royal Institute of Technology.
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