![Photonics | Free Full-Text | Photonic-Assisted Receivers for Instantaneous Microwave Frequency Measurement Based on Discriminators of Resonance Type Photonics | Free Full-Text | Photonic-Assisted Receivers for Instantaneous Microwave Frequency Measurement Based on Discriminators of Resonance Type](https://www.mdpi.com/photonics/photonics-09-00754/article_deploy/html/images/photonics-09-00754-g001.png)
Photonics | Free Full-Text | Photonic-Assisted Receivers for Instantaneous Microwave Frequency Measurement Based on Discriminators of Resonance Type
![Thin ceramic PZT dual- and multi-frequency pMUT arrays for photoacoustic imaging | Microsystems & Nanoengineering Thin ceramic PZT dual- and multi-frequency pMUT arrays for photoacoustic imaging | Microsystems & Nanoengineering](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41378-022-00449-0/MediaObjects/41378_2022_449_Figa_HTML.png)
Thin ceramic PZT dual- and multi-frequency pMUT arrays for photoacoustic imaging | Microsystems & Nanoengineering
![Sensors | Free Full-Text | Testing the Performance of Multi-Frequency Low-Cost GNSS Receivers and Antennas Sensors | Free Full-Text | Testing the Performance of Multi-Frequency Low-Cost GNSS Receivers and Antennas](https://www.mdpi.com/sensors/sensors-21-02029/article_deploy/html/images/sensors-21-02029-g001.png)