Company Filing History:
Years Active: 1992-2000
Title: The Innovations of Andrew E McGirr
Introduction
Andrew E McGirr is a notable inventor based in Calgary, Canada. He has made significant contributions to the field of telecommunications, particularly in the development of antennas for portable radio transceivers. With a total of three patents to his name, McGirr's work has had a lasting impact on the design and functionality of handheld communication devices.
Latest Patents
One of McGirr's latest patents is the Duplexing Antenna for Portable Radio Transceiver. This innovative antenna is designed for use with portable duplex radio transceivers, such as those found in hand-held cellular telephones. It features a pair of co-planar radiating patch elements elevated above a conductive surface by a conductive bar. This configuration defines a reference ground plane that inherently isolates the patches. The patches are shaped to operate within a desired frequency band and function as band-pass filters. One patch is tuned to the transmit band, serving as a transmit structure, while the other is tuned to the receive band, acting as a receive structure. The design incorporates switching devices, such as positive-intrinsic negative (PIN) diodes, to allow tuning of each structure. This efficient antenna design eases the front-end filtering functions traditionally performed by a duplexer and can be completely enclosed within the chassis of a hand-held telephone.
Career Highlights
Throughout his career, McGirr has worked with several companies, including Novatel Communications Ltd. and Novatel Communication Ltd. His experience in these organizations has contributed to his expertise in telecommunications and antenna design.
Collaborations
McGirr has collaborated with notable individuals in his field, including John Godfrey McRory and Barry J Cassidy. These collaborations have likely enriched his work and led to further innovations in antenna technology.
Conclusion
Andrew E McGirr is a distinguished inventor whose contributions to the field of telecommunications have advanced the functionality of portable communication devices. His innovative designs, particularly in antenna technology, continue to influence the industry today.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.