Sennheiser Sets New Standards for High-End Audio Receivers Using AWR Software
AWR's solution is unique because the company's tool development is driven by customer demand. It offers all the features that are absolutely necessary for an effective product design. The AWR design flow, along with excellent customer support, is a winning combination.
Mathias Kleinsorge
RF Engineer, Project Leader

Sennheiser Sets New Standards for High-End Audio Receivers Using AWR Software

The Design Challenge

The RF spectrum in music halls and concert venues is becoming more and more crowded with multiple, simultaneous frequencies and channels. Sennheiser audio equipment is used by many famous recording artists worldwide, and they rely on Sennheiser to help them deliver high quality performances. Therefore, our concert audio receivers must be able to function in this environment and produce excellent sound with no interference.

The Solution

In order to ensure that our EM 3732 audio receiver would function without interference and deliver the quality of sound required, we designed a varactor-tuned bandpass filter thats contained within the preselector of the receiver. The intermodulation behavior of this filter plays a key role in the receiver design, and with Microwave Office® software we were able to achieve +20dBm IP3, thus meeting the strict system requirements necessary for the desired performance.

We were able to use the AWR design flow exclusively for the entire design cycle, from the system design, through the circuit design (DC, time-domain, audio, RF noise, and layout), all tasks during the design cycle (verification by measurement, controlling measurement equipment, extracting measurement-based sub circuits, centering of circuits), and, finally, production aspects such as yield optimization. For all the simulations we used the Microwave Office APLAC® RF simulator. No other simulator on the market provides such a comprehensive and flexible set of features as APLAC.

To continue to read the full story, click to download the PDF document below...

Related customer stories

For Creowave it is extremely important to succeed on the first round. We don't do many design-rounds because the filters have to be on the market fast. We believe that this is not possible with any other tools besides AWR.
Jyrki Koski
Managing Director
Read story
For us, Microwave Office means accurate models, fast filter development cycles, time savings and cost efficiency.
Kimmo Koskiniemi
RF Chief Engineer
Pulse Electronics
Read story
After a very successful evaluation, we decided to use AWR’s high-frequency design tools for our curriculum. The speed, accuracy, and ease-of-use as well as the excellent support we received from AWR’s local application engineer throughout the evaluation process made it very easy for us to select AWR and AWR software as our new partner for RF/microwave studies.
YongJiu Zhao
Nanjing University of Aeronautics and Astronautics
Read story