Siretta Blogs Archives

IoT frequency bands below 6 GHz: range, power and antenna trade-offs

IoT devices use a wide range of frequency bands below 6 GHz, from Sub-GHz LPWAN sensors to 5G and Wi-Fi systems. Lower frequencies such as 433 MHz, 868 MHz, 915…

Danny SzeMay 21, 2026

Siretta Blogs

Active vs passive GPS antennas: what’s the real difference

When comparing active vs passive GPS antennas, the key difference is where signal gain is introduced in the RF signal chain. A passive GPS antenna consists only of the antenna…

Zorik DanelianApril 29, 2026

Siretta Blogs

Why is my GPS accuracy bad near buildings and how to improve it

GPS accuracy is typically poor near buildings because the receiver is no longer receiving a clean, direct signal from the satellites. Instead, signals are either partially blocked or reflected off…

Zorik DanelianApril 22, 2026

Siretta Blogs

Distributed Antenna Systems: Powering Next-Gen Indoor Wireless with Advanced Antenna Solutions

The way we use wireless connectivity is evolving rapidly, placing unprecedented demands on network infrastructure. With 5G data traffic expected to exceed 900 exabytes by 2027, increasing at around 62%…

Harry FinchApril 9, 2026

Siretta Blogs

RF Cable Assembly Design Guide: Getting a PCB RF Module to an External Antenna (Without Field Failures)

In most wireless products like IoT sensors, routers, gateways, trackers, the RF module and PCB is protected by the device enclosure, but the externally mounted antenna has to live on…

Danny SzeFebruary 25, 2026

Siretta Blogs

When IoT Modems Go End of Life: How to Avoid Forced Redesigns

End-of-life (EOL) announcements are becoming more common across the cellular IoT market. As manufacturers rationalise portfolios, merge product lines or exit legacy technologies, many widely deployed modems are being discontinued…

Andrew ManFebruary 11, 2026

Testing and Validation: Driving Reliability in Non-Terrestrial Networks (NTNs)

As global connectivity demands continue to grow, non-terrestrial networks (NTNs) are emerging as a transformative force in telecommunications. By extending coverage to remote and underserved areas, supporting IoT applications, and…

Andrew ManOctober 24, 2025

How Do Antennas Actually Radiate? The Physics Behind Efficient RF Design

Introduction Most engineers understand how to impedance match an antenna to 50 ohms. But what actually makes an antenna radiate? And why do some antennas radiate efficiently while others barely…

Laura SimmondsAugust 1, 2025

Siretta Blogs

Optimise Your RF Performance with the Right Connector Solution

RF (Radio Frequency) signals operate at very high frequencies, typically in the MHz to GHz range. At these frequencies, signal integrity is highly sensitive to impedance mismatches, losses, and electromagnetic…

Harry FinchJuly 23, 2025

Siretta Blogs

Why Custom Cellular Modems Are Powering the Future of Utility Monitoring

Smart metering, leak detection, and energy monitoring all depend on one thing: reliable communication. For utilities rolling out thousands of devices across remote and harsh environments, cellular connectivity offers a…

Andrew ManJuly 8, 2025

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Siretta Blogs

IoT frequency bands below 6 GHz: range, power and antenna trade-offs

Active vs passive GPS antennas: what’s the real difference

Why is my GPS accuracy bad near buildings and how to improve it

Distributed Antenna Systems: Powering Next-Gen Indoor Wireless with Advanced Antenna Solutions

RF Cable Assembly Design Guide: Getting a PCB RF Module to an External Antenna (Without Field Failures)

When IoT Modems Go End of Life: How to Avoid Forced Redesigns

Testing and Validation: Driving Reliability in Non-Terrestrial Networks (NTNs)

How Do Antennas Actually Radiate? The Physics Behind Efficient RF Design

Optimise Your RF Performance with the Right Connector Solution

Why Custom Cellular Modems Are Powering the Future of Utility Monitoring

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