PATCH ANTENNA AND METHOD OF MAKING PATCH ANTENNA
First Claim
1. A patch antenna comprising:
- a dielectric base plate having a top surface and a bottom surface facing each other, and having a base plate through-hole penetrating from the top surface to the bottom surface at a predetermined location;
an antenna radiation electrode formed on the top surface of the dielectric base plate;
a ground electrode formed on the bottom surface of the dielectric base plate and having a ground opening, said ground opening being substantially concentric with the base plate through-hole and having a diameter greater than that of the base plate through-hole; and
a feed pin having a head provided on an upper end thereof and a bar-shaped body extending from the upper end to a lower end thereof, said head being connected to the antenna radiation electrode with solder at the predetermined location, said lower end being derived toward the bottom surface of the dielectric base plate via the base plate through-hole and the ground opening,wherein the dielectric base plate has a recess provided in a periphery of the base plate through-hole on a side of the top surface for accommodating the head and the solder, said recess having a depth greater than a height of the head;
the antenna radiation electrode is formed on an inner wall surface of the recess; and
the solder is placed below a main surface of the antenna radiation electrode in a state that the head is accommodated in the recess.
1 Assignment
0 Petitions
Accused Products
Abstract
A patch antenna can prevent a feed point (solder) from rising upward beyond the main surface of an antenna radiation electrode, and a method of making that patch antenna. A dielectric base plate (12A) has, on its top surface (12u) side, a recess (12c) that is provided in the periphery of a base plate through-hole (12a). This recess (12c) is able to accommodate a head (181) of a feed pin (18) and solder (15A), and also has a depth that is greater than the height of the head (181) of the feed pin (18). The antenna radiation electrode (14A) is formed on inner wall surfaces (12c-1) defining the recess (12c). In a state in which the head (181) of the feed pin (18) is accommodated in the recess (12c), solder (15A) is placed not to project upward beyond the main surface of the antenna radiation electrode (14A).
-
Citations
17 Claims
-
1. A patch antenna comprising:
-
a dielectric base plate having a top surface and a bottom surface facing each other, and having a base plate through-hole penetrating from the top surface to the bottom surface at a predetermined location; an antenna radiation electrode formed on the top surface of the dielectric base plate; a ground electrode formed on the bottom surface of the dielectric base plate and having a ground opening, said ground opening being substantially concentric with the base plate through-hole and having a diameter greater than that of the base plate through-hole; and a feed pin having a head provided on an upper end thereof and a bar-shaped body extending from the upper end to a lower end thereof, said head being connected to the antenna radiation electrode with solder at the predetermined location, said lower end being derived toward the bottom surface of the dielectric base plate via the base plate through-hole and the ground opening, wherein the dielectric base plate has a recess provided in a periphery of the base plate through-hole on a side of the top surface for accommodating the head and the solder, said recess having a depth greater than a height of the head; the antenna radiation electrode is formed on an inner wall surface of the recess; and the solder is placed below a main surface of the antenna radiation electrode in a state that the head is accommodated in the recess. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of producing a patch antenna through soldering a feed pin to a dielectric base plate, said feed pin having a head that provided on an upper end thereof and a bar-shaped body extending from the upper end to a lower end thereof, the method comprising the steps of:
-
preparing the dielectric base plate having a top surface and a bottom surface facing each other, and having a base plate through-hole penetrating from the top surface to the bottom surface at a predetermined location, said dielectric base plate further including a recess in a periphery of the base plate through-hole on a side of the top surface for accommodating a head of the feed pin, said recess having a depth greater than a height of the head; forming a ground electrode on the bottom surface of the dielectric base plate, said ground electrode having a ground opening substantially concentric with the base plate through-hole and having a diameter greater than that of the base plate through-hole; forming an antenna radiation electrode on the top surface of the dielectric base plate and an inner wall surface of the recess; placing a solder paste on the antenna radiation electrode at a location where the head is placed; pushing the body in the base plate through-hole from the top surface of the dielectric base plate so that the lower end is derived toward the bottom surface of the dielectric base plate and the head is placed on the solder paste; and melting the solder paste through reflow to solder the feed pin. - View Dependent Claims (13, 14, 15, 16, 17)
-
Specification