editor's blog
Subscribe Now

Two Ways to Tune an Antenna

We’ve looked at a couple of companies focusing on improving the performance of cell phone antennas in real time as conditions change. WiSpry (MEMS) and Peregrine (SOS CMOS) were two such examples. But Cavendish Kinetics came into the picture as well, and it turns out that there’s another layer of nuance as to what these companies do.

According to Cavendish, there are two ways to improve antenna performance: tune the impedance and tune the frequency. In the former case, you have an antenna that has to work with multiple frequencies, but is not specifically optimized for all of those frequencies. But as conditions or utilized bands change, the impedance matching may not be optimal. So companies like WiSpry and Peregrine provide capacitor networks that allow real-time tweaking of the impedance to reduce signal loss.

But Cavendish Kinetics claims to be doing something different: the capacitor arrays they create aren’t for adjusting the impedance; they’re for re-centering the frequency of the antenna. While they say that impedance tuning can improve the signal by 20% or so, they claim that they can get a 2X improvement in signal strength simply by tuning the antenna to whichever frequency is in use at a particular time.

We’ll look more at the specifics of how they create their capacitor arrays in a future story, but that’s secondary to the fact that they’re actually trying to solve a different problem than folks that, on the surface, would appear to be doing the same thing.

Leave a Reply

featured blogs
Jan 22, 2021
Amidst an ongoing worldwide pandemic, Samtec continues to connect with our communities. As a digital technology company, we understand the challenges and how uncertain times have been for everyone. In early 2020, Samtec Cares suspended its normal grant cycle and concentrated ...
Jan 22, 2021
I was recently introduced to the concept of a tray that quickly and easily attaches to your car'€™s steering wheel (not while you are driving, of course). What a good idea!...
Jan 22, 2021
This is my second post about this year's CES. The first was Consumer Electronics Show 2021: GM, Intel . AMD The second day of CES opened with Lisa Su, AMD's CEO, presenting. AMD announced new... [[ Click on the title to access the full blog on the Cadence Community...
Jan 20, 2021
Explore how EDA tools & proven IP accelerate the automotive design process and ensure compliance with Automotive Safety Integrity Levels & ISO requirements. The post How EDA Tools and IP Support Automotive Functional Safety Compliance appeared first on From Silicon...

featured paper

Overcoming Signal Integrity Challenges of 112G Connections on PCB

Sponsored by Cadence Design Systems

One big challenge with 112G SerDes is handling signal integrity (SI) issues. By the time the signal winds its way from the transmitter on one chip to packages, across traces on PCBs, through connectors or cables, and arrives at the receiver, the signal is very distorted, making it a challenge to recover the clock and data-bits of the information being transferred. Learn how to handle SI issues and ensure that data is faithfully transmitted with a very low bit error rate (BER).

Click here to download the whitepaper

featured chalk talk

UWB: Because Location Matters

Sponsored by Mouser Electronics and Qorvo

While technologies like GPS, WiFi, and Bluetooth all offer various types of location services, none of them are well-suited to providing accurate, indoor/outdoor, low-power, real-time, 3D location data for edge and endpoint devices. In this episode of Chalk Talk, Amelia Dalton chats with Mickael Viot from Qorvo about ultra-wideband (UWB) technology, and how it can revolutionize a wide range of applications.

Click here for more information about Qorvo Ultra-Wideband (UWB) Technology