Electric/magnetic microstrip antenna

• US 5,781,158 A
• Filed: 07/30/1996
• Issued: 07/14/1998
• Est. Priority Date: 04/25/1995
• Status: Expired due to Fees

• Current Assignee: Sang-Dae Lee
• Original Assignee: Young Hoek Ko
• Inventors: Ko, Young Hoek, Nozmu, Hasebe
• Primary Examiner(s): Hajec, Donald T.
• Assistant Examiner(s): Ho, Tan
• Application Number:
  US08/688,619
• Time in Patent Office: 714 Days
• Field of Search: 343/700 MS, 343/848, 343/815, 343/817, 343/846, 343/833, 343/834
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 9/0414 in a stacked or folded configuration
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/0442 with particular tuning means

Abstract

Disclosed is an electric/magnetic microstrip antenna 17a, 17b, 17c, 17d, 17e, 17f, 17g, and 17h. An electric/magnetic antenna 17a includes a ground plate 11a. A first dielectric substrate 12a, a patch radiator 13a, a second dielectric substrate 14a, parallel plates 15a, 15b are sequentially stacked on the ground plate 11a. The ground plate 11a and the patch radiator 13a have the same width(W1) and the parallel plates 15a and 15b are formed by folding up both ends of the ground plate 11a such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator 13a and the ground plate 11a is not restricted. The outer conductor of a feeder 16a is connected with the ground plate 11a, and the inner conductor of the feeder 16a is connected with the patch radiator 13a through the ground plate 11a.

Claims

1. Electric/magnetic microstrip antenna comprising:

a ground plate having first and second opposite ends;

a first dielectric substrate and a patch radiator sequentially stacked on the ground plate; and

a second dielectric substrate and a pair of parallel plates which are spaced from each other, sequentially stacked on the patch radiator to form a capacitance between the patch radiator and the respective parallel plates;

wherein the ground plate and the patch radiator have the same width, and wherein the pair of parallel plates are respectively connected to the first and second opposite ends of the ground plate such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

2. Electric/magnetic microstrip antenna comprising:

a ground plate;

a first dielectric substrate and a patch radiator sequentially stacked on the ground plate;

a second dielectric substrate and a first parallel plate sequentially stacked on the upper surface of the patch radiator adjacent one end of the antenna, to form a capacitance between the patch radiator and the first parallel plate; and

a third dielectric substrate and a second parallel plate sequentially stacked below the lower surface of the ground plate adjacent the other end of the antenna, to form a capacitance between the ground plate and the second parallel plate;

wherein the ground plate and the patch radiator have the same width, and wherein the first parallel plate is connected to one end of the ground plate and the second parallel plate is connected to one end of the patch radiator such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

3. Electric/magnetic microstrip antenna comprising:

a dielectric substrate;

a patch radiator and a first parallel plate spacedly stacked on the upper surface of the dielectric substrate to form a capacitance therebetween; and

a ground plate and a second parallel plate spacedly stacked below the lower surface of the dielectric substrate to form a capacitance therebetween;

wherein the ground plate and the patch radiator have the same width, and wherein the first parallel plate is connected to one end of the ground plate and the second parallel plate is connected to one end of the patch radiator such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

4. Electric/magnetic microstrip antenna comprising:

a ground plate;

a first dielectric substrate and a pair of patch radiators which are spaced from each other, sequentially stacked on the ground plate;

a pair of second dielectric substrates and a pair of first parallel plates sequentially stacked on the upper surface of the respective patch radiator adjacent one end of the antenna, to form a capacitance between the patch radiators and the first parallel plates; and

a pair of third dielectric substrates and a pair of second parallel plates sequentially stacked below the lower surface of the ground plate adjacent the other end of the antenna, to form a capacitance between the ground plate and the respective second parallel plates,

wherein the first parallel plates are connected to one end of the ground plate and the second parallel plates are connected to one end of the patch radiator such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

5. Electric/magnetic microstrip antenna comprising:

a ground plate;

a first dielectric substrate and a patch radiator sequentially stacked on the ground plate; and

a second dielectric substrate and two pairs of parallel plates which are opposedly spaced from each other, sequentially stacked on the upper surface of the patch radiator to form a capacitance between the patch radiator and the respective parallel plates;

wherein the ground plate and the patch radiator have the same width, and wherein the two pairs of parallel plates are respectively connected to respective ends of the ground plate such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

6. Electric/magnetic microstrip antenna comprising:

a ground plate;

a dielectric substrate stacked on the ground plate;

a pair of parallel plates which are stacked on the dielectric substrate and spaced from each other; and

a patch radiator which is stacked on the dielectric substrate and positioned between the parallel plates to form a capacitance between the parallel plates and the patch radiator;

wherein the ground plate and the patch radiator have the same width, and wherein the parallel plates are respectively connected to respective ends of the ground plate such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

7. Electric/magnetic microstrip antenna comprising:

a ground plate;

a dielectric substrate stacked on the ground plate; and

a patch radiator and a parallel plate spacedly stacked on the upper surface of the dielectric substrate to form a capacitance therebetween;

wherein the ground plate and the patch radiator have the same width, and wherein the parallel plate is connected to one end of the ground plate and the patch radiator is connected to the other end of the ground plate such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.

8. Electric/magnetic microstrip antenna comprising:

a ground plate;

a first dielectric substrate and a patch radiator sequentially stacked on the ground plate, one end of the ground plate being shorted electrically; and

a second dielectric substrate and a pair of parallel plates which are spaced from each other, sequentially stacked on the patch radiator to form a capacitance between the two parallel plates;

wherein the ground plate and the patch radiator have the same width, and wherein the parallel plates are respectively connected to respective ends of the ground plate such that the size of the electric/magnetic microstrip antenna is reduced while the range of electric lines of force between the patch radiator and the ground plate is not restricted.