Switching circuit capable of realizing left-handed rotation and right-handed rotation of antenna

Abstract

The utility model provides a circuit capable of realizing left-handed and right-handed switching of an antenna, the left-handed and right-handed switching of the antenna is controlled by utilizing TTL high and low levels, two paths of VCC are externally input for power supply, voltages are output through two power supply voltage stabilizing chips respectively, the two paths of voltages are connected to a single-pole double-throw SPST switch respectively, meanwhile, the first path of power supply voltage stabilizing chip is directly connected to a V2 pin of a radio frequency switch, and the second path of power supply voltage stabilizing chip is directly connected to a V2 pin of a radio frequency switch. The output end of the single-pole double-throw SPST switch is connected to the V1 pin of the radio frequency switch, and the output end pins RF1 and RF2 of the radio frequency switch are connected to the antenna. According to the invention, the processing difficulty is reduced, the size is reduced, the cost is reduced, the structure is simple, the reliability is high, and the expandability is strong.

Description

Technical Field

[0001] This invention relates to the field of antenna communication, and more specifically to a circuit that enables left-right rotation switching of an antenna. Background Technology

[0002] With the continuous development of communication technology, there are higher requirements for reducing interference and improving communication quality.

[0003] Antennas capable of left- or right-hand rotation are playing an increasingly important role in communication systems due to their advantages such as reducing multipath interference, suppressing polarization mismatch, and improving space utilization. Especially in applications requiring precise control of signal transmission direction, the switching between left- and right-hand rotation can affect signal transmission distance, stability, and anti-interference capability.

[0004] Currently, communication systems mainly achieve left- or right-hand rotation switching by changing the antenna itself, which often presents problems such as manufacturing difficulties and large size. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a circuit that can switch between left and right rotation of an antenna.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A circuit for switching the left and right rotation of an antenna, which uses TTL high and low levels to control the left and right rotation of the antenna, includes two power supply regulator chips, a single-pole double-throw SPST switch and an RF switch.

[0008] The system receives two external VCC power supplies, which are output through two power regulator chips. The two voltages are connected to a single-pole double-throw (SPST) switch. The first power regulator chip is directly connected to the V2 pin of the RF switch. The output of the SPST switch is connected to the V1 pin of the RF switch. The output pins RF1 and RF2 of the RF switch are connected to the antenna.

[0009] Furthermore, one power supply regulator chip supplies power to the SPST switch and the RF switch, while the other power supply regulator chip is connected to pin B of the SPST switch, keeping pin B at a high level at all times.

[0010] Furthermore, the high and low level states of the output pin A of the SPST switch are controlled by the control pin SE of the SPST switch.

[0011] Furthermore, the high and low level states of the output pin A of the SPST switch control the V1 pin of the RF switch, thereby controlling the RF main port pin RFC of the RF switch to switch between pins RF1 and RF2.

[0012] Furthermore, the left and right rotation of the antenna is controlled by switching the RF main port pin RFC between pins RF1 and RF2.

[0013] This invention can be used for left-right rotation switching of multiple antennas in an array antenna without adding extra circuit structure, and has strong scalability.

[0014] The beneficial effects of this invention are:

[0015] (1) Reduced processing difficulty. The present invention has low requirements for antenna radiating patches, reduces the complexity of antenna design, avoids the design of complex line patterns of antenna, and thus greatly reduces the difficulty of antenna processing.

[0016] (2) Reduced size and lower cost. The antenna feed network has a simple structure, which reduces the network's footprint and achieves performance while reducing size and cost.

[0017] (3) Simple structure and high reliability. This invention uses two power supply regulator chips, one SPST switch, and one RF switch. The number of components is small, the circuit structure is simple, and the reliability is high.

[0018] (4) High scalability. This invention can be used not only to control the left and right rotation switching of a single antenna, but also to control the left and right rotation switching of an array antenna, thus exhibiting high scalability. Attached Figure Description

[0019] Figure 1 This is a link block diagram of the present invention.

[0020] Figure 2 Truth table of control logic for SPST switch

[0021] Figure 3 Truth table for the control logic of the RF switch

[0022] Figure 4 The logical truth table for switching left and right rotations in this invention

[0023] Figure 5 A block diagram of the link for controlling the left and right rotation switching of the antenna array. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] A circuit for switching the left and right rotation of an antenna is disclosed, which utilizes TTL high and low levels to control the left and right rotation of the antenna. The circuit comprises two power supply regulator chips, a single-pole double-throw SPST switch, and an RF switch. It features a small number of components, a simple structure, and high reliability.

[0026] The system receives two external VCC power supplies, which are output through two power regulator chips. The two voltages are connected to a single-pole double-throw (SPST) switch. The first power regulator chip is directly connected to the V2 pin of the RF switch. The output of the SPST switch is connected to the V1 pin of the RF switch. The output pins RF1 and RF2 of the RF switch are connected to the antenna.

[0027] Furthermore, one power supply regulator chip supplies power to the SPST switch and the RF switch, while the other power supply regulator chip is connected to pin B of the SPST switch, keeping pin B at a high level at all times.

[0028] Furthermore, the high and low level states of the output pin A of the SPST switch are controlled by the control pin SE of the SPST switch.

[0029] Furthermore, the high and low level states of the output pin A of the SPST switch control the V1 pin of the RF switch, thereby controlling the RF main port pin RFC of the RF switch to switch between pins RF1 and RF2.

[0030] Furthermore, the left and right rotation of the antenna is controlled by switching the RF main port pin RFC between pins RF1 and RF2.

[0031] like Figure 1 As shown, the power supply signal VCC_1, after passing through the power regulator chip LDO1, is output to the VCC pin of the SPST switch to power the SPST switch, and also powers the RF switch through the V2 pin of the RF switch. The power supply signal VCC_2, after passing through the power regulator chip LDO2, is output to pin B of the SPST switch, keeping pin B at a high level at all times.

[0032] like Figure 1 and Figure 2 As shown, the control logic of the SPST switch is as follows: when pin SE is high (H), the output state of pin A is consistent with that of pin B, i.e., high level. When pin SE is low (L), the output state of pin A is GND, i.e., low level.

[0033] like Figure 1 and Figure 3 As shown, the control logic of the RF switch is as follows: pin V2 is the power supply terminal of the RF switch, which is always VCC. When pin V1 is high (H), the RFC pin is consistent with the RF1 pin. When pin V1 is low (L), the RFC pin is consistent with the RF2 pin.

[0034] like Figure 1 and Figure 4As shown, the control logic of the entire link is as follows: when pin SE is high (H), the RFC pin is consistent with the RF1 pin, that is, the antenna switches to left-hand rotation. When pin SE is low (L), the RFC pin is consistent with the RF2 pin, that is, the antenna switches to right-hand rotation.

[0035] like Figure 5 As shown, this invention can be used for left- or right-hand rotation switching of multiple antennas in an array antenna without adding extra circuit structure, and has strong scalability.

[0036] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art will recognize that, based on the concept of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A circuit capable of switching antenna rotation left and right, comprising two power supply regulator chips and a single-pole double-throw SPST. A switch and a radio frequency switch, characterized in that: The circuit that enables left and right rotation switching of the antenna utilizes TTL high and low levels to control the left and right rotation switching of the antenna; it is powered by two external VCC inputs, which are output voltages through two power supply regulator chips respectively. The two voltages are connected to a single-pole double-throw SPST switch respectively. At the same time, the first power supply regulator chip is directly connected to the V2 pin of the RF switch. The output terminal of the single-pole double-throw SPST switch is connected to the V1 pin of the RF switch. The output pins RF1 and RF2 of the RF switch are connected to the antenna.

2. The antenna left-right rotation switching circuit according to claim 1, characterized in that: One power supply regulator chip powers the SPST switch and the RF switch, while the other power supply regulator chip is connected to pin B of the SPST switch, keeping pin B at a high level at all times.

3. The antenna left-right rotation switching circuit according to claim 1, characterized in that: The high and low level states of the output pin A of the SPST switch are controlled by the control pin SE of the SPST switch.

4. The antenna left-right rotation switching circuit according to claim 1, characterized in that: The high and low level states of the output pin A of the SPST switch control the V1 pin of the RF switch, thereby controlling the switching of the RF main port pin RFC of the RF switch between pins RF1 and RF2.

5. The antenna left-right rotation switching circuit according to claim 1, characterized in that: The left and right rotation of the antenna is controlled by switching the RF main port pin RFC between pins RF1 and RF2 via the RF switch.

6. The antenna left-right rotation switching circuit according to claim 1, characterized in that: The described antenna left-right rotation switching circuit is used for left-right rotation switching of multiple antennas in an array antenna without the need for additional circuit structures, and has strong scalability.

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