RF & Microwave Community

Questions & Answers on Bluetooth

Bluetooth Low Energy 5.1 - Angle of Arrival and Angle of Departure Test Considerations

Bluetooth IoT 

Eve Danel

Litepoint

Embedded in most mobile phones and countless consumer electronics devices, Bluetooth is primarily used for audio streaming and data transfer. The wireless technology is also widely deployed for proximity sensing, which uses distance estimation derived from the receive signal strength indicator (RSSI) measurement.The RSSI method, however, provides only a crude estimation of distance, as the accurac...read more

The Key Things You Need to Know About Bluetooth 5.1 and 5.2: Faster, More Flexible, and Enhanced for Audio

Bluetooth 

Jennifer Gibbs, Field Applications Engineer

Laird Connectivity

Even though the specification for Bluetooth 5.0 hit the market not that long ago, there are two recent updates to the specification that have notable features that will impact the future of wireless design: Bluetooth 5.1 and 5.2. This article will guide you through key aspects of these updates, so your engineering team can anticipate what functionality will be available for upcoming design project...read more

Bluetooth Receiver Sensitivity

Bluetooth 

Editorial Team

Mar 16, 2021
Bluetooth Receiver sensitivity is the measure of the minimum signal strength a Bluetooth receiver can interpret i.e. the lowest power level at which the receiver can detect a radio signal, maintain a connection, and still demodulate the data.Receiver sensitivity is expressed in dBm. Because receiver sensitivity indicates how faint an input signal can be to be successfully received by the receiver,...read more

What is Dual-Mode Bluetooth?

Bluetooth 

Editorial Team

Nov 21, 2020
Dual-Mode Bluetooth devices are those that support both Bluetooth Classic and Bluetooth Low Energy (BLE). Bluetooth Classic provides a high throughput two-way communication link (up to 2.1 Mbps). It is commonly used for streaming audio / video and for applications that require a continuous broadband link.BLE (Bluetooth Low Energy) has been developed for low data rate applications with a throu...read more

What is Bluetooth Mesh Technology?

Bluetooth 

Editorial Team

Jul 9, 2020
Bluetooth Mesh is a Wireless Mesh Networking technology based on the Bluetooth standard. The technology allows Bluetooth enabled devices (above v4.2) to connect with each other to create a network that can consist of 10s, 100s or 1000s of wirelessly connected devices. The Bluetooth Mesh standard was conceived by the Bluetooth SIG (Special Interest Group) in 2014 and then adopted/published in July ...read more

Going the Distance: Four Approaches for Expanding the Range of Bluetooth

Bluetooth 

Jonathan Kaye, Senior Director of Product Management at Laird Connectivity

Laird Connectivity

Design engineers face a conundrum when it comes to Bluetooth Low Energy. BLE is chosen for a design project with full knowledge of its limited range in order to take advantage of the technology’s other strengths. But the implementation, once completed, often requires greater range than BLE can deliver. It’s a Catch-22 that many design engineers face when they work on a BLE-enabled proj...read more

Evolution to Bluetooth 5.1

Bluetooth 

Mahendra Tailor, Technology Leader

Laird Connectivity

Bluetooth is widely used on wireless devices, such as smartphones and tablets, to provide connectivity to Internet of Things (IoT) devices through a wireless personal area network. Enhancements in V5.0 increase the data rate, range and payload of the Bluetooth Low Energy connections resulting in higher speed and better coverage. Recently, V5.1 was launched with significant upgrades to positioning ...read more

How to Build a Perfect Bluetooth Enabled Printed Circuit Board

Bluetooth 

San Francisco Circuits

San Francisco Circuits

Printed circuit boards (PCBs) with Bluetooth technology can be problematic with interference, lost data and poor signal integrity if certain precautions aren't taken. Leading PCB manufacturing and PCB assembly provider, San Francisco Circuits has now come up with a list of rules & guidelines to consider when choosing Bluetooth technology for a given application and, more specifically, desi...read more

What is Electromagnetic Compatibility (EMC) Testing?

RF Basics Test & Measurement 

Rich Markley

Apr 3, 2019
In a nutshell, electromagnetic compatibility (EMC) testing is testing we perform to ensure that the electronic devices that have come to play such a big role in our lives 1) have sufficient immunity to electromagnetic interference and 2) they do not create excessive electromagnetic radiation.These are both very important issues. Insufficient immunity can lead to malfunctioning of electrical and el...read more

What is Bluetooth Low Energy (BLE)?

Bluetooth 

Editorial Team

Oct 5, 2017
Bluetooth Low Energy (BLE) or Bluetooth Smart, is the low power- version of Bluetooth that was developed for the Internet of Things (IoT) and was introduced as part of the Bluetooth 4.0 core specification. BLE was originally developed by Nokia as an in-house project called 'Wibree' and soon after was adopted by the Bluetooth SIG. Bluetooth LE uses a 2.4 GHz unlicensed radio band to interconnect ne...read more

What is the difference between Bluetooth 5, Bluetooth 4.2 and Bluetooth 2.0?

Bluetooth 

Editorial Team

Feb 23, 2017
The Bluetooth 5.0 standard was announced in December 2016 by the Bluetooth Special interest group (SIG). Key updates to Bluetooth 5 include longer range, faster speed, and larger broadcast message capacity, as well as improved interoperability and coexistence with other wireless technologies. Bluetooth 5 will continue to advance the Internet of Things (IoT) experience by enabling simple and effort...read more