Motorola Corporation

Motorola, Imc.

Robert A Marinelli

Richard J Toth

Robert Kurcbart

Tuan K Nguyen

Pha C Nguyen

Annette D Horn

Donna A Clark

Selective call receiver

A low profile antenna system comprises a frame having front and side surfaces for enclosing a printed circuit board supporting a receiver, the front surface of the frame including a first conductive plate, an isolated portion thereof, which couples to the printed circuit board and forms a first portion of a loop antenna. A conductor is coupled to the printed circuit board and forms a second portion of the loop antenna. A second conductive plate is coupled to the frame and forms a rear surface of the frame to completely enclose the printed circuit board. The second conductive plate is capacitively coupled to the conductor thereby enhancing the sensitivity of the loop antenna.

Low profile antenna system for a cardlike communication receiver

A wristworn receiving device suitable for being worn about a wrist comprises a receiver (404) for receiving radio frequency signals on a particular operating frequency, a housing (142) for enclosing the receiver (404), a first wristband section (102) including a first wristband loop antenna portion (118) and a movable clasp member (122), and a second wristband section (104) including a second wristband loop antenna portion (134) terminated in a fixed clasp member (140). The first (118) and second (134) wristband loop antenna portions are partially resonated at the operating frequency. The second wristband loop antenna portion (134) is coupled to the first wristband loop antenna portion (118) and is positioned by the movable clasp member (122) at first (204) and second (202 or 206) positions along the first wristband loop antenna portion (118) so as to form a resonant loop antenna which remains substantially tuned to the operating frequency at the first (204) and second (202 or 206 ) positions.

Adjustable wristband loop antenna

A selective call receiver (100) includes a receiver for receiving a message and a housing (104) for enclosing a receiver (102). A substantially semicircular arcuate recess (106) shaped in a portion of the housing receives a first substantially semicircular arcuate contact (108) that has a substantially arcuate outer surface which provides a non-movable mechanical coupling with the substantially semicircular arcuate recess (106). The first substantially semicircular arcuate contact (108) has a substantially arcuate inner surface, and a second substantially arcuate contact (114) terminates an end of a wrist band antenna (112') which has an outer contact surface for coupling with the substantially arcuate inner surface of the first substantially semicircular arcuate contact (108) thereby forming a movable electrical coupling therebetween.

Removable antenna coupling on a wrist watch pager

Growing community of inventors

Boynton Beach, FL, United States of America

Robert A Marinelli