Frederick J Martin

Title: Innovations of Frederick J Martin

Introduction

Frederick J Martin is a notable inventor based in Plantation, FL (US). He has made significant contributions to the field of electronics, particularly in the development of advanced circuit designs. With a total of 2 patents, his work has had a considerable impact on technology.

Latest Patents

One of his latest patents is the "Cascaded Delay Locked Loop Circuit." This invention involves a delay locked loop frequency synthesizer that utilizes a primary delay line element and one or more secondary delay elements. In this design, a main delay line is employed to coarsely select a frequency output, while a secondary delay element, either passive or active, enhances the resolution of the primary delay line. The passive embodiment allows for both coarse and fine frequency selection by choosing components from the output taps of the main delay line to drive the passive secondary delay element for coarse adjustment, and selecting an output from the secondary delay element for fine selection.

Another significant patent is the "Receiver with Improved Digital Intermediate to Base Band Demodulator." This invention features a digital IF to base band demodulator that includes delta sigma samplers for sampling two channels of an IF signal at a rate substantially higher than the Nyquist rate. The design incorporates a first pair of decimation filters that decimate and filter the output of the delta sigma samplers while maintaining a sufficient sample rate for digital mixing, cross-adding, and pulse shape match filtering. A set of mixers combines the output of the first pair of decimation filters with two phases of a digital representation of a local IF signal. The outputs of the mixers are then processed by a pair of summers to cancel undesired harmonics, followed by a second set of decimation filters that apply a filter function matched to the pulse shape of a base band signal present in the IF signal.

Career Highlights

Frederick J Martin has had a distinguished career at Motorola Corporation, where he has been instrumental in various innovative projects. His expertise in circuit design and signal processing has contributed to the advancement of communication technologies.

Collaborations

Throughout his career, Martin has collaborated with talented individuals such as Jui-Kuo Juan and David E Bockelman. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Frederick J Martin's contributions to