Abstract: A membrane for an electro-acoustic transducer comprised of at least one elastomer layer made using spray coating of a liquid elastomer solution is provided. The at least one layer of elastomer is made by spraying a liquid elastomer solution, which may comprise a silicone, onto a mold having the desired membrane geometry, allowing the solution to cure and remove the membrane from the mold. The mold can be configured to hold other components of an electro-acoustic transducer that will be attached to the membrane after the curing step.

Abstract: A method of manufacturing a membrane for an electro-acoustic transducer through spray coating of a liquid elastomer solution is provided. The method includes spraying the liquid elastomer solution, which may comprise a silicone, onto a mold having the desired membrane geometry, allowing the solution to cure and remove the membrane from the mold. The mold can be configured to hold other components of an electro-acoustic transducer that will be attached to the membrane after the curing step. Also provided is a membrane for an electro-acoustic transducer comprised of an elastomer and made using spray coating of a liquid elastomer solution.

Abstract: A phase-locked loop (PLL) includes a detector configured to generate an error signal based on a difference between a reference signal and an output signal, a charge pump configured to generate current pulses based on the error signal, a loop filter configured to generate a control voltage based on the current pulses, and a voltage-controlled oscillator (VCO) configured to generate the output signal at a frequency which is a function of the control voltage. The loop filter includes a capacitive voltage divider configured to reduce the control voltage from a range that falls within a voltage domain of the charge pump to a range that falls within a voltage domain of the VCO, the voltage domain of the charge pump being greater than the voltage domain of the VCO.

Abstract: According to an embodiment, a radio frequency device includes a phase locked loop circuit, and an automatic gain control circuit, where an output of an automatic gain control circuit is coupled to a reference signal input of the phase locked loop circuit.

Abstract: Representative implementations of devices and techniques provide non-linearity detection and mitigation for a phase interpolator of a controlled oscillator circuit, such as a PLL. A bit stream output of a phase detector of the oscillator circuit is segmented according to multiple phase positions of the phase interpolator, forming a bit stream for each of the multiple phase positions. Each bit stream of each phase position is analyzed, and phase position errors may be detected and mitigated based on the contents of the bit streams.

Abstract: Representative implementations of devices and techniques provide non-linearity detection and mitigation for a phase interpolator of a controlled oscillator circuit, such as a PLL. A bit stream output of a phase detector of the oscillator circuit is segmented according to multiple phase positions of the phase interpolator, forming a bit stream for each of the multiple phase positions. Each bit stream of each phase position is analyzed, and phase position errors may be detected and mitigated based on the contents of the bit streams.

Abstract: A method of manufacturing a membrane for an electro-acoustic transducer through spray coating of a liquid elastomer solution is provided. The method includes spraying the liquid elastomer solution, which may comprise a silicone, onto a mold having the desired membrane geometry, allowing the solution to cure and remove the membrane from the mold. The mold can be configured to hold other components of an electro-acoustic transducer that will be attached to the membrane after the curing step. Also provided is a membrane for an electro-acoustic transducer comprised of an elastomer and made using spray coating of a liquid elastomer solution.

Abstract: A filter dispenser for the storage and dispensation of individual flat filter sections. The filter dispenser includes a storage compartment with a slot shaped exit for a tube-like band, composed of two parts, and guides in proximity to the slot for the running through of the band parts. The two parts of the band are joined by continuous and releasable edges and cross connections which form pockets which seat filter sections. Upon simultaneous drawing of the parts of the band through the guides, the connections of the band between the guides and the storage compartment are broken and the encapsulated filter sections are released for removal.