US 5,495,260 AGranted

Printed circuit dipole antenna

AssigneeMotorola, Inc.

InventorTammy E. Couture

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Abstract

A paging receiver (100) comprises a printed circuit board (200) on which receiving circuitry (110) is mounted. The printed circuit board (200) comprises a plurality of conductive runners (205, 210, 305, 310) which form a dipole antenna (105) for providing radio frequency signals to the receiving circuitry (110). First and second elongated runners (205, 210) are plated on a first surface (215) of the printed circuit board (200) along a single axis. Third and fourth elongated runners (305, 310) are plated on a second surface (300) of the printed circuit board (200) parallel to and beneath the first and second elongated runners (205, 210), respectively. The first and third runners (205, 305) are electrically coupled via a first plated hole (230) to form a first monopole element of the dipole antenna (105) for providing the signals to the receiving circuitry (110), and the second and fourth runners (210, 310) are electrically coupled via a second plated hole (240) to form a second monopole clement of the dipole antenna (105).

Claims15

Dependent claims

A radio receiver for receiving radio frequency (RF) signals, the radio receiver comprising:

an insulative substrate on which receiving circuitry for recovering information included in the RF signals is mounted;
and
a dipole antenna for receiving the RF signals, comprising:
a first elongated member plated on a first surface of the insulative substrate along a single axis and coupled to the receiving circuitry for providing the RF signals thereto;
a second elongated member plated on a second surface of the insulative substrate opposite the first and surface, the second elongated member formed approximately parallel to and beneath the first elongated member and coupled thereto by a plated hole formed through the insulative substrate at outer regions of the first and second elongated members, thereby forming a first monopole element;
a third elongated member plated on the first surface of the insulative substrate along the single axis and coupled to a ground terminal on the first surface of the substrate for receiving a ground voltage;
and
a fourth elongated member plated on the second surface of the insulative substrate and formed approximately parallel to and beneath the third elongated member and coupled to the third elongated member, thereby forming a second monopole element.

5 more elements

A radio receiver for receiving radio frequency (RF) signals, the radio receiver comprising:

a printed circuit board on which receiving circuitry for recovering information included in the RF signals is mounted;
and
a dipole antenna for receiving the RF signals, comprising:
first and second elongated runners, each having inner and outer regions, plated on a first surface of the printed circuit board along a single axis;
third and fourth elongated runners, each having inner and outer regions, plated on a second surface of the printed circuit board opposite the first surface, the third and fourth elongated runners formed approximately parallel to and beneath the first and second elongated runners, respectively;
wherein the inner region of the first elongated runner is electrically coupled to the receiving circuitry for providing the RF signals thereto, and wherein the outer region of the first elongated runner is further electrically coupled to the outer region of the third elongated runner by a first plated hole formed through the printed circuit board, thereby forming a first monopole element of the dipole antenna;
and
wherein the inner region of the second elongated runner is coupled to a ground terminal for receiving a ground voltage, and wherein the outer region of the second elongated runner is further electrically coupled to the outer region of the fourth elongated runner by a second plated hole formed through the printed circuit board, thereby forming a second monopole element of the dipole antenna.

5 more elements

Dependencies are inferred from the claim text.