CN215268261U

CN215268261U - Radio frequency circuit

Info

Publication number: CN215268261U
Application number: CN202120362547.1U
Authority: CN
Inventors: 曾神
Original assignee: Shanghai Ruiwei Electronic Technology Co ltd
Current assignee: Shanghai Ruiwei Electronic Technology Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-12-21
Anticipated expiration: 2031-02-09

Abstract

The utility model discloses a radio frequency circuit, which comprises a first radio frequency chip, wherein the first radio frequency chip comprises a first port (D1), a second port (D2) and a third port (D3); the first port (D1) is a TRX port; the second port (D2) is a TX port; the third port (D3) is an RX port. The utility model discloses a radio frequency circuit can save the interface setting on prior art's basis, and mainboard occupation space is less, can provide more design space and can effectively reduce the hardware manufacturing cost of circuit board for the hardware design.

Description

Radio frequency circuit

Technical Field

The utility model relates to an electronic circuit technical field especially relates to a radio frequency circuit.

Background

Radio Frequency (RF) circuitry refers to circuitry that processes signals at electromagnetic wavelengths on the same order of magnitude as the size of the circuitry or device. Radio frequency circuits are one of the important circuit blocks in wireless communication devices. In the prior art, a radio frequency circuit is provided with more interfaces, occupies more space of a main board on one hand, and has higher manufacturing cost of hardware on the other hand.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a radio frequency circuit.

The utility model provides a radio frequency circuit, including the first radio frequency chip, the first radio frequency chip includes first port (D1), second port (D2) and third port (D3); the first port (D1) is a TRX port; the second port (D2) is a TX port; the third port (D3) is an RX port.

The second RF chip comprises a fourth port (D4) and a fifth port (D5); the first port (D1) is in circuit connection with the fourth port (D4); the third port (D3) and the fifth port (D5) are connected in circuit. The utility model provides a radio frequency circuit still includes first inductance (L1), first inductance (L1) one end with first port (D1) are connected and the other end with fifth port (D5) are connected. The utility model provides a radio frequency circuit still includes second inductance (L2), second inductance (L2) one end with first port (D1) is connected and other end ground connection. The radio frequency circuit provided by the utility model also comprises a first capacitor (C1) and a third inductor (L3); one end of the first capacitor (C1) is connected with the first port (D1) and the other end is connected with the third inductor (L3); the other end of the third inductor (L3) is grounded; the other end of the first capacitor (C1) is a first interface (J1) of the radio frequency circuit. The radio frequency circuit provided by the utility model also comprises a fourth inductor (L4); the fourth inductor (L4) has one end connected to the second port (D2) and the other end connected to ground. The radio frequency circuit provided by the utility model also comprises a fifth inductor (L5); one end of the fifth inductor (L5) is connected with the second port (D2) and the other end is a radio frequency circuit second interface (J2). The radio frequency circuit provided by the utility model also comprises a second capacitor (C2), a sixth inductor (L6) and a seventh inductor (L7), wherein the second capacitor (C2) is provided with a first end and a second end; a first end of the second capacitor (C2) is connected with the third port (D3) and the other end is respectively connected with one end of the sixth inductor (L6) and one end of a seventh inductor (L7); the other end of the sixth inductor (L6) is a third interface (J3) of the radio frequency circuit; the other end of the seventh inductor (L7) is grounded. The utility model provides a radio frequency circuit still includes third electric capacity (C3), the one end of third electric capacity (C3) with third port (D3) are connected and other end ground connection. The first radio frequency chip is a duplexer chip; the second radio frequency chip is a filter chip.

The utility model provides a radio frequency circuit can save the interface setting on prior art's basis, and mainboard occupation space is less, can provide more design space and can effectively reduce the hardware manufacturing cost of circuit board for the hardware design.

Drawings

Fig. 1 is a schematic diagram of a radio frequency circuit according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the rf circuit provided in this embodiment includes a first rf chip, where the first rf chip includes a first port D1, a second port D2, and a third port D3; the first port D1 is a TRX port; the second port D2 is a TX port; the third port D3 is an RX port.

The radio frequency circuit provided by this embodiment further includes a second radio frequency chip, where the second radio frequency chip includes a fourth port D4 and a fifth port D5; the first port D1 is electrically connected with the fourth port D4; the third port D3 is electrically connected with the fifth port D5.

The radio frequency circuit provided in this embodiment further includes a first inductor L1, wherein one end of the first inductor L1 is connected to the first port D1, and the other end of the first inductor L1 is connected to the fifth port D5.

The radio frequency circuit provided by this embodiment further includes a second inductor L2, wherein one end of the second inductor L2 is connected to the first port D1, and the other end is grounded.

The radio frequency circuit provided by the embodiment further includes a first capacitor C1 and a third inductor L3; one end of the first capacitor C1 is connected to the first port D1 and the other end is connected to the third inductor L3; the other end of the third inductor L3 is grounded; the other end of the first capacitor C1 is a first interface J1 of the radio frequency circuit. As will be appreciated by those skilled in the art, the first interface J1 of the rf circuit is used to connect to a switching device.

The radio frequency circuit provided by this embodiment further includes a fourth inductor L4; one end of the fourth inductor L4 is connected to the second port D2, and the other end is grounded.

The radio frequency circuit provided by this embodiment further includes a fifth inductor L5; one end of the fifth inductor L5 is connected to the second port D2, and the other end is a second interface J2 of the rf circuit. The second interface J2 of the rf circuit is used to connect to a power amplifier PA.

The radio frequency circuit provided by this embodiment further includes a second capacitor C2, a sixth inductor L6, and a seventh inductor L7, where the second capacitor C2 is provided with a first end and a second end; a first end of the second capacitor C2 is connected to the third port D3 and the other end is connected to one end of the sixth inductor L6 and one end of a seventh inductor L7, respectively; the other end of the sixth inductor L6 is a third interface J3 of the radio frequency circuit; the other end of the seventh inductor L7 is grounded. The third interface J3 of the rf circuit is used to connect with a Transceiver as will be understood by those skilled in the art.

The radio frequency circuit provided by this embodiment further includes a third capacitor C3, wherein one end of the third capacitor C3 is connected to the third port D3, and the other end is grounded.

The first radio frequency chip is a duplexer chip.

The second radio frequency chip is a filter chip.

Those skilled in the art can understand that the utility model provides a radio frequency circuit not only can save two ports, effectively reduces the space area occupied of circuit board, reduces the manufacturing cost of circuit board, and the requirement of the frivolous design of the electronic equipment of being convenient for still effectively improves the receiving sensitivity of circuit.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A radio frequency circuit, comprising a first radio frequency chip comprising a first port (D1), a second port (D2), and a third port (D3); the first port (D1) is a TRX port; the second port (D2) is a TX port; the third port (D3) is an RX port.

2. The radio frequency circuit of claim 1, further comprising a second radio frequency chip comprising a fourth port (D4) and a fifth port (D5); the first port (D1) is in circuit connection with the fourth port (D4); the third port (D3) and the fifth port (D5) are connected in circuit.

3. The radio frequency circuit according to claim 2, further comprising a first inductor (L1), the first inductor (L1) being connected with the first port (D1) at one end and with the fifth port (D5) at the other end.

4. The radio frequency circuit according to claim 3, further comprising a second inductor (L2), the second inductor (L2) being connected to the first port (D1) at one end and to ground at the other end.

5. The radio frequency circuit of claim 4, further comprising a first capacitance (C1) and a third inductance (L3); one end of the first capacitor (C1) is connected with the first port (D1) and the other end is connected with the third inductor (L3); the other end of the third inductor (L3) is grounded; the other end of the first capacitor (C1) is a first interface (J1) of the radio frequency circuit.

6. The radio frequency circuit of claim 5, further comprising a fourth inductance (L4); the fourth inductor (L4) has one end connected to the second port (D2) and the other end connected to ground.

7. The radio frequency circuit of claim 6, further comprising a fifth inductance (L5); one end of the fifth inductor (L5) is connected with the second port (D2) and the other end is a radio frequency circuit second interface (J2).

8. The radio frequency circuit of claim 7, further comprising a second capacitor (C2), a sixth inductor (L6), and a seventh inductor (L7) having a first terminal and a second terminal; a first end of the second capacitor (C2) is connected with the third port (D3) and the other end is respectively connected with one end of the sixth inductor (L6) and one end of a seventh inductor (L7); the other end of the sixth inductor (L6) is a third interface (J3) of the radio frequency circuit; the other end of the seventh inductor (L7) is grounded.

9. The radio frequency circuit according to claim 8, further comprising a third capacitor (C3), wherein one end of the third capacitor (C3) is connected to the third port (D3) and the other end is connected to ground.

10. The radio frequency circuit according to claim 9, wherein the first radio frequency chip is a duplexer chip; the second radio frequency chip is a filter chip.