By closing a feedback loop around the demodulator, the FMFB architecture narrows the noise bandwidth and lowers the FM threshold, without improving SNR at high CNR.
By closing a feedback loop around the demodulator, the FMFB architecture narrows the noise bandwidth and lowers the FM threshold, without improving SNR at high CNR.
Working through examples shows how the threshold effect reshapes FM design choices. See how ignoring it can undershoot…
Working through examples shows how the threshold effect reshapes FM design choices. See how ignoring it can undershoot the required carrier power by over 5x for the same target SNR.
New chip weds advanced technology from Nuvoton and Klippel to create a high-performance audio solution for smart audio devices
New chip weds advanced technology from Nuvoton and Klippel to create a high-performance audio solution for smart audio devices
The ATS296X series from Actions Technology combines Ceva's High Data Throughput radio IP with Actions' own dual-RF…
The ATS296X series from Actions Technology combines Ceva's High Data Throughput radio IP with Actions' own dual-RF design, targeting links of roughly 7.5 Mbps.
The standard FM SNR equation breaks down once the carrier-to-noise ratio drops below a critical threshold, revealing a…
The standard FM SNR equation breaks down once the carrier-to-noise ratio drops below a critical threshold, revealing a hard limit on trading bandwidth for noise performance.
Texas Instruments combined JFET inputs with a bipolar output stage in 1977—and it slowly took over guitar pedals,…
Texas Instruments combined JFET inputs with a bipolar output stage in 1977—and it slowly took over guitar pedals, synthesizers, and mixing desks.
Learn how to construct a robust DMOS-based board featuring mute and standby controls. It easily drives 4 or 8 Ω loads…
Learn how to construct a robust DMOS-based board featuring mute and standby controls. It easily drives 4 or 8 Ω loads for your next custom stereo or speaker project.
Deriving a general signal-to-noise expression for frequency modulation with any message signal reveals a core trade-off:…
Deriving a general signal-to-noise expression for frequency modulation with any message signal reveals a core trade-off: more deviation buys better noise performance, but only by using more bandwidth.
The compact system footprint and streamlined integration may help automakers adapt to shifting radio policies.
The compact system footprint and streamlined integration may help automakers adapt to shifting radio policies.
Safely drive up to ±500 mA into reactive loads. This compact module employs the LT1970A and offers independent 1%…
Safely drive up to ±500 mA into reactive loads. This compact module employs the LT1970A and offers independent 1% source/sink thresholds and onboard fault diagnostics.
This article explores how combining signal and noise power reveals how the FM system’s output SNR scales with carrier…
This article explores how combining signal and noise power reveals how the FM system’s output SNR scales with carrier amplitude and modulation index.
Bob Yannes built a three-voice analog synthesizer onto one die in 1982, and its imperfect filter became the signature…
Bob Yannes built a three-voice analog synthesizer onto one die in 1982, and its imperfect filter became the signature sound of an era.
This project brief describes how to build a compact dual-channel power amplifier module that delivers 38 W per channel…
This project brief describes how to build a compact dual-channel power amplifier module that delivers 38 W per channel into 4-ohm speakers using STMicroelectronics' STA540 audio amplifier IC.
Explore how frequency-modulated waves resist interference. We break down the demodulator architecture and derive the…
Explore how frequency-modulated waves resist interference. We break down the demodulator architecture and derive the exact output signal power for a sinusoidal message.
The new SECORA ID Key S USB security solution supports FIDO2 and PKI through hardware and near field interfaces.
The new SECORA ID Key S USB security solution supports FIDO2 and PKI through hardware and near field interfaces.
Envelope detection is simple, but that simplicity has a noise-performance cost. Here’s how much SNR conventional AM…
Envelope detection is simple, but that simplicity has a noise-performance cost. Here’s how much SNR conventional AM gives up compared to its coherent counterparts.
Signetics packed a VCO and phase detector into one 14-pin part, turning a daunting feedback technique into something an…
Signetics packed a VCO and phase detector into one 14-pin part, turning a daunting feedback technique into something an ordinary engineer could build.
5G, AI, and quantum computing are pushing RF interconnects to their limits. Learn how engineers are evolving connector…
5G, AI, and quantum computing are pushing RF interconnects to their limits. Learn how engineers are evolving connector designs to ensure signal integrity in compact, high-speed systems.
Build an ultra-low-noise preamplifier with a JFE150 JFET and OPA202 op-amp, perfect for high-impedance sensors,…
Build an ultra-low-noise preamplifier with a JFE150 JFET and OPA202 op-amp, perfect for high-impedance sensors, hydrophones, guitar pickups, microphones, and turntables.
Using a graphical approach, we show that coherent SSB demodulation leaves the input and output SNR unchanged, then…
Using a graphical approach, we show that coherent SSB demodulation leaves the input and output SNR unchanged, then compare its noise performance to DSB-SC and baseband systems.
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