Parasitic antenna array design for microwave frequencies
First Claim
1. A parasitic antenna array, comprising:
- a substrate, the substrate including a first surface and a second surface, the second surface being disposed generally opposite the first surface;
a monopole element, the monopole element being connected to the substrate, the monopole element configured for radiating electromagnetic energy in an omni-directional radiation pattern;
a ground plane, the ground plane being directly connected to and located on and in proximity to the second surface of the substrate;
a plurality of parasitic elements, the plurality of parasitic elements being connected to the substrate and extending from the second surface of the substrate, through the substrate and out of the first surface of the substrate; and
a plurality of load circuits, the plurality of load circuits being connected to the plurality of parasitic elements, the plurality of load circuits further being directly connected to the ground plane, the plurality of load circuits and the ground plane being in proximity to the second surface of the substrate, each load circuit of the plurality of load circuits including a first diode connected to a parasitic element of the plurality of parasitic elements to the ground plane and a second diode connected to the parasitic element and a capacitor, the capacitor connected to the ground plane.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention is load circuit for a parasitic antenna element of a parasitic antenna array. The load circuit may include a DC bias current source, a resistor connected to the DC bias current source, one or more capacitors connected to the resistor, and multiple (ex. —two) diodes connected to the parasitic antenna element. The first diode may be configured for directly connecting the parasitic element to a ground plane of the parasitic antenna array. The second diode may be configured for connecting the parasitic element to the ground plane via the one or more capacitors. The load circuit may be configured for providing a variable (ex. —adjustable) impedance to the parasitic antenna array.
-
Citations
11 Claims
-
1. A parasitic antenna array, comprising:
-
a substrate, the substrate including a first surface and a second surface, the second surface being disposed generally opposite the first surface; a monopole element, the monopole element being connected to the substrate, the monopole element configured for radiating electromagnetic energy in an omni-directional radiation pattern; a ground plane, the ground plane being directly connected to and located on and in proximity to the second surface of the substrate; a plurality of parasitic elements, the plurality of parasitic elements being connected to the substrate and extending from the second surface of the substrate, through the substrate and out of the first surface of the substrate; and a plurality of load circuits, the plurality of load circuits being connected to the plurality of parasitic elements, the plurality of load circuits further being directly connected to the ground plane, the plurality of load circuits and the ground plane being in proximity to the second surface of the substrate, each load circuit of the plurality of load circuits including a first diode connected to a parasitic element of the plurality of parasitic elements to the ground plane and a second diode connected to the parasitic element and a capacitor, the capacitor connected to the ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A parasitic antenna array, comprising:
-
a substrate, the substrate including a first surface and a second surface, the second surface being disposed generally opposite the first surface; a monopole element, the monopole element being connected to the substrate, the monopole element configured for radiating electromagnetic energy in an omni-directional radiation pattern; a ground plane, the ground plane being directly connected to and in proximity to the second surface of the substrate; a plurality of parasitic elements, the plurality of parasitic elements being connected to the substrate and extending from the second surface of the substrate, through the substrate and out of the first surface of the substrate; and
a plurality of load circuits, the plurality of load circuits being connected to the plurality of parasitic elements, the plurality of load circuits further being directly connected to the ground plane, the plurality of load circuits and the ground plane being in proximity to the second surface of the substrate wherein a load circuit included in the plurality of load circuits is connected to a base of a parasitic element included in the plurality of parasitic elements, the load circuit being connected to the base of the parasitic element in proximity with the second surface of the substrate, each load circuit of the plurality of load circuits including a first diode connected to a parasitic element of the plurality of parasitic elements to the ground plane and a second diode connected to the parasitic element and a capacitor, the capacitor connected to the ground plane.
-
-
10. A parasitic antenna array, comprising:
-
a substrate, the substrate including a first surface and a second surface, the second surface being disposed generally opposite the first surface; a monopole element, the monopole element being connected to the substrate, the monopole element configured for radiating electromagnetic energy in an omni-directional radiation pattern; a ground plane, the ground plane being directly connected to the second surface of the substrate; a plurality of parasitic elements, the plurality of parasitic elements being connected to the substrate and extending from the second surface of the substrate, through the substrate and out of the first surface of the substrate; and a plurality of load circuits, the plurality of load circuits being connected to the plurality of parasitic elements, the plurality of load circuits further being directly connected to the ground plane, the plurality of load circuits and the ground plane being in proximity to the second surface of the substrate, each load circuit of the plurality of load circuits including a first diode connected to a parasitic element of the plurality of parasitic elements to the ground plane and a second diode connected to the parasitic element and a capacitor, the capacitor connected to the ground plane. - View Dependent Claims (11)
-
Specification