Inductor circuit and wireless communication devices

Patent metadata

Field	Value
Publication number	US-10637528-B2
Application number	US-201916285250-A
Country	US
Kind code	B2
Filing date	Feb 26, 2019
Priority date	Jul 23, 2018
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

An inductor circuit includes first inductive circuit, second inductive circuit, and third inductive circuit. First inductive circuit at receiver side has a first end coupled to a first port of an antenna and a second end coupled to an input port of a receiving circuit. Second inductive circuit at transmitter side has a first end and a second end respectively coupled to output ports of a power amplifier. Third inductive circuit at antenna side has a first end coupled to a first port of the antenna and having a second end. Second inductive circuit and the third inductive circuit are disposed on an outer ring to form a ring shape and the third inductive circuit is disposed on an inner ring within the outer ring to form a spiral shape. Third inductive circuit is disposed between the second inductive circuit and the first inductive circuit.

First claim

What is claimed is:

1. An inductor circuit, comprising:
a first inductive circuit, having a first end coupled to a first port of an antenna and a second end coupled to an input port of a receiving circuit;
a second inductive circuit, having a third end and a fourth end respectively coupled to output ports of a power amplifier; and
a third inductive circuit, having a fifth end coupled to the first port of the antenna and having a sixth end;
wherein the second inductive circuit and the third inductive circuit are disposed on an outer ring to form a ring shape and the third inductive circuit is disposed on an inner ring within the outer ring to form a spiral shape; and, the third inductive circuit is disposed between the second inductive circuit and the first inductive circuit.

2. The inductor circuit of claim 1 , wherein the inductor circuit includes at least a top layer and a bottom layer.

3. The inductor circuit of claim 2 , wherein each of the second conductive circuit and the third conductive circuit comprises an inner wire and an outer wire, and wherein the inner wire and the outer wire are disposed on the top layer, and the inner wire is connected, partially and radially interlaced, and then extended to the outer wire through the bottom layer.

4. The inductor circuit of claim 3 , wherein a space distance between an outer wire of the first inductive circuit and the inner wire of the third inductive circuit on the outer ring is larger than a space distance between the inner wire of the second inductive circuit and the outer wire of the third inductive circuit.

5. The inductor circuit of claim 2 , wherein the first end of the first inductive circuit is in an inner end of the spiral shape and is arranged to connect the fifth end of the third inductive circuit through the bottom layer.

6. The inductor circuit of claim 1 , wherein the first inductive circuit, the second inductive circuit, and the third inductive circuit are disposed within a single chip die.

7. The inductor circuit of claim 1 , wherein a current/signal inductive direction of the first inductive circuit is opposite to a current/signal inductive direction of the third inductive circuit during a receiving mode.

8. The inductor circuit of claim 7 , wherein the current/signal inductive direction of the third inductive circuit is a counterclockwise direction, and the current/signal inductive direction of the first inductive circuit is a clockwise direction; and, the current/signal inductive direction of the second inductive circuit is identical to the current/signal inductive direction of the third inductive circuit.

9. The inductor circuit of claim 1 , wherein each of the ring shape and the spiral shape is formed in a shape of an octagon, a polygon, or a circle.

10. The inductor circuit of claim 1 , wherein the sixth end of the third inductive circuit is coupled to a second port of the antenna.

Assignees

• Pixart Imaging Inc
• Audiowise Tech Inc

Inventors

• Liu wen-shun

Classifications

• H03F1/565

  using inductive elements · CPC title

• H01F17/0006

  Printed inductances (printed coils for dynamo-electric machines H02K3/26; printed circuits H05K) · CPC title

• H01F2038/143

  for signals · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H03F3/45475 Primary

  using IC blocks as the active amplifying circuit · CPC title