Frequency-adjustable router

Abstract

The utility model discloses a frequency modulation router, comprising a router body and a Wi-Fi HaLow antenna arranged on the router body, a frequency switching circuit is also arranged in the router body, and the frequency switching circuit is connected between a signal source and the Wi-Fi HaLow antenna. Comprising a first impedance matching circuit, a second impedance matching circuit and a switch switching circuit, and the first impedance matching circuit and the second impedance matching circuit are connected in parallel between the signal source and the Wi-Fi HaLow antenna through the switch switching circuit. And the first impedance matching circuit / the second impedance matching circuit is selected to be communicated with the signal source and the Wi-Fi HaLow antenna through the switch switching circuit during working.

Description

Technical Field

[0001] The utility model relates to the technical field of network equipment, in particular to a frequency-adjustable router. Background Art

[0002] Routers are devices we use frequently. Most of the time, we use routers to generate WiFi signals, which can bring great convenience to the use of our smart devices. However, we know that the transmission power of routers is limited. When it has a built-in PIFA antenna, the bandwidth of the traditional PIFA antenna that can meet the standing wave ratio of less than 2 can only reach about 50Mhz, which cannot meet the application scenarios of the 850Mhz to 950Mhz frequency band. This has brought great inconvenience to our work and life. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a frequency-adjustable router which can broaden the application frequency of the antenna in the router.

[0004] In order to solve the above technical problems, the utility model provides a frequency-adjustable router, comprising: a router body and a Wi-Fi HaLow antenna arranged on the router body. The router body is also provided with a frequency switching circuit, which is connected between a signal source and the Wi-Fi HaLow antenna and includes a first impedance matching circuit, a second impedance matching circuit and a switch switching circuit. The first impedance matching circuit and the second impedance matching circuit are connected in parallel between the signal source and the Wi-Fi HaLow antenna through the switch switching circuit, so that during operation, the first impedance matching circuit / the second impedance matching circuit is selected by the switch switching circuit to be connected to the signal source and the Wi-Fi HaLow antenna.

[0005] A further technical solution is as follows: the switch switching circuit includes a first switch and a second switch, and the first switch and the second switch are respectively connected between the first impedance matching circuit and the second impedance matching circuit and the signal source.

[0006] A further technical solution is: the switch switching circuit further includes a third switch and a fourth switch, and the third switch and the fourth switch are respectively connected between the first impedance matching circuit and the second impedance matching circuit and the Wi-Fi HaLow antenna.

[0007] Its further technical solution is: the first impedance matching circuit includes a capacitor C307, an inductor L39 and a capacitor C308, one end of the capacitor C307 is connected to one end of the inductor L39 and the first switch, one end of the capacitor C308 is connected to the other end of the inductor L39 and the third switch, and the other ends of the capacitor C307 and the capacitor C308 are both grounded.

[0008] A further technical solution is as follows: the inductance of the inductor L39 is 8.2nH, and the capacitances of the capacitors C307 and C308 are both 1.5pf.

[0009] Its further technical solution is: the second impedance matching circuit includes a capacitor C309, an inductor L40 and a capacitor C310, one end of the capacitor C309 is connected to one end of the inductor L40 and the second switch, one end of the capacitor C310 is connected to the other end of the inductor L40 and the fourth switch, and the other ends of the capacitor C309 and the capacitor C310 are both grounded.

[0010] A further technical solution is that the first switch, the second switch, the third switch and the fourth switch are CMOS radio frequency switches.

[0011] The beneficial technical effect of the present invention is that, compared with the prior art, the frequency-adjustable router of the present invention is provided with a Wi-Fi HaLow antenna, which has a wider available frequency range and can meet application scenarios of higher frequency bands (for example, the 850 MHz to 950 MHz frequency band). The frequency switching circuit is also provided with a frequency switching circuit, which includes a first impedance matching circuit, a second impedance matching circuit, and a switch switching circuit. The first impedance matching circuit and the second impedance matching circuit are connected in parallel between the signal source and the Wi-Fi HaLow antenna via the switch switching circuit, so that during operation, the first impedance matching circuit / the second impedance matching circuit is selected by the switch switching circuit to be connected to the signal source and the Wi-Fi HaLow antenna. During operation, the impedance matching circuit and the switch switching circuit can be combined to select two different frequency bands within the frequency band range of the Wi-Fi HaLow antenna. That is, the application frequency of the antenna can be adjusted by switching different impedance matching circuits, thereby making the application frequency of the antenna wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a circuit diagram of a specific embodiment of the frequency-adjustable router of the utility model. DETAILED DESCRIPTION

[0013] In order to more fully understand the technical content of the present invention, the technical solution of the present invention is further introduced and illustrated below with reference to the schematic diagram, but is not limited thereto.

[0014] Reference Figure 1 , Figure 1 The present invention provides a circuit diagram of a specific embodiment of a frequency switching circuit 10 in a frequency-adjustable router. The frequency-adjustable router includes a router body and a Wi-Fi HaLow antenna ANT1 disposed on the router body. The router body also includes a frequency switching circuit 10, which is connected between a signal source and the Wi-Fi HaLow antenna ANT1. The frequency switching circuit 10 includes a first impedance matching circuit 11, a second impedance matching circuit 12, and a switching circuit. The first impedance matching circuit 11 and the second impedance matching circuit 12 are connected in parallel between the signal source and the Wi-Fi HaLow antenna ANT1 via the switching circuit. During operation, the switching circuit selects either the first impedance matching circuit 11 or the second impedance matching circuit 12 to communicate with the signal source and the Wi-Fi HaLow antenna ANT1. Based on the above design, the frequency-adjustable router of the present invention is provided with a Wi-Fi HaLow antenna ANT1, which has a wider available frequency range and can meet the application scenarios of higher frequency bands (for example, the 850Mhz to 950Mhz frequency band). In addition, a frequency switching circuit 10 is provided. When working, the first impedance matching circuit 11 / the second impedance matching circuit 12 and the switch switching circuit in the frequency switching circuit 10 can be combined to select two different frequency bands within the frequency band range of the Wi-Fi HaLow antenna ANT1, that is, different impedance matching circuits are switched to adjust the application frequency of the antenna, so that the application frequency of the antenna is wider and more diversified.

[0015] In some embodiments, the switch switching circuit includes a first switch FL1, a second switch FL2, a third switch FL3, and a fourth switch FL4. The first switch FL1 and the second switch FL2 are respectively connected between the first impedance matching circuit 11 and the second impedance matching circuit 12 and the signal source, and the third switch FL3 and the fourth switch FL4 are respectively connected between the first impedance matching circuit 11 and the second impedance matching circuit 12 and the Wi-Fi HaLow antenna ANT1. In the present invention, the first switch FL1, the second switch FL2, the third switch FL3, and the fourth switch FL4 are controlled by a controller of the router. Preferably, CMOS RF switches, such as the BGS12A switch, can be used.

[0016] In some embodiments, the first impedance matching circuit 11 includes a capacitor C307, an inductor L39, and a capacitor C308. One end of the capacitor C307 is connected to one end of the inductor L39 and the first switch FL1, and one end of the capacitor C308 is connected to the other end of the inductor L39 and the third switch FL3. The other ends of the capacitors C307 and C308 are both grounded. Specifically, in this embodiment, the inductance of the inductor L39 is 8.2 nH, and the capacitances of the capacitors C307 and C308 can be 1.5 pf.

[0017] Preferably, in this embodiment, the second impedance matching circuit 12 includes a capacitor C309, an inductor L40, and a capacitor C310, one end of the capacitor C309 is connected to one end of the inductor L40 and the second switch FL2, one end of the capacitor C310 is connected to the other end of the inductor L40 and the fourth switch FL4, and the other ends of the capacitor C309 and the capacitor C310 are both grounded.

[0018] Understandably, the signal source sends a HALOW-ANT signal, and the first impedance matching circuit 11 is connected to the Wi-Fi HaLow antenna ANT1 to enable the antenna to operate in the frequency band of 850Mhz-900Mhz, and the second impedance matching circuit 12 is connected to the Wi-Fi HaLow antenna ANT1 to enable the antenna to operate in the frequency band of 900Mhz-950Mhz. When the frequency band of the radio frequency of the frequency-adjustable router needs to be applied in the frequency band of 850Mhz-900Mhz, the controller of the router body sends a signal to the first switch FL1 and the third switch FL3, the first switch FL1 and the third switch FL3 work, and the first impedance matching circuit 11 is connected to the signal source and the Wi-Fi HaLow antenna ANT1; and when the frequency band of the radio frequency of the frequency-adjustable router needs to be applied in the frequency band of 900Mhz-950Mhz, the controller of the router body sends a signal to the second switch FL2 and the fourth switch FL4, the second switch FL2 and the fourth switch FL4, the second impedance matching circuit 12 is connected to the signal source and the Wi-Fi The HaLow antenna ANT1 is connected, so that the antenna operates in the 900 MHz-950 MHz frequency band.

[0019] In summary, the frequency-adjustable router of the present invention is provided with a Wi-Fi HaLow antenna, which has a wider available frequency range and can meet application scenarios of higher frequency bands (for example, the 850Mhz to 950Mhz frequency band). In addition, a frequency switching circuit is provided, and the frequency switching circuit includes a first impedance matching circuit, a second impedance matching circuit and a switching circuit. The first impedance matching circuit and the second impedance matching circuit are connected in parallel between the signal source and the Wi-Fi HaLow antenna through the switching circuit, so that when working, the first impedance matching circuit / the second impedance matching circuit is selected by the switching circuit to be connected to the signal source and the Wi-Fi HaLow antenna. Then, when working, the impedance matching circuit and the switching circuit can be combined to select two different frequency bands within the frequency band range of the Wi-Fi HaLow antenna, that is, by switching different impedance matching circuits to adjust the application frequency of the antenna, the application frequency of the antenna is wider.

[0020] The above preferred embodiments should be regarded as examples of the implementation methods of the present utility model. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present utility model or made based on this embodiment should be regarded as within the scope of protection of this patent.

Claims

1. A frequency-adjustable router, characterized in that: The frequency-adjustable router includes a router body and a Wi-Fi HaLow antenna arranged on the router body. The router body is also provided with a frequency switching circuit. The frequency switching circuit is connected between the signal source and the Wi-Fi HaLow antenna, and includes a first impedance matching circuit, a second impedance matching circuit and a switch switching circuit. The first impedance matching circuit and the second impedance matching circuit are connected in parallel between the signal source and the Wi-Fi HaLow antenna through the switch switching circuit, so that during operation, the first impedance matching circuit / the second impedance matching circuit is selected by the switch switching circuit to be connected to the signal source and the Wi-Fi HaLow antenna.

2. The frequency-adjustable router according to claim 1, wherein: The switch switching circuit includes a first switch and a second switch, wherein the first switch and the second switch are respectively connected between the first impedance matching circuit and the second impedance matching circuit and the signal source.

3. The frequency-adjustable router according to claim 2, wherein: The switch switching circuit further includes a third switch and a fourth switch, and the third switch and the fourth switch are respectively connected between the first impedance matching circuit and the second impedance matching circuit and the Wi-Fi HaLow antenna.

4. The frequency-adjustable router according to claim 3, wherein: The first impedance matching circuit includes a capacitor C307, an inductor L39 and a capacitor C308. One end of the capacitor C307 is connected to one end of the inductor L39 and the first switch, and one end of the capacitor C308 is connected to the other end of the inductor L39 and the third switch. The other ends of the capacitor C307 and the capacitor C308 are both grounded.

5. The frequency-adjustable router according to claim 4, wherein: The inductance of the inductor L39 is 8.2 nH, and the capacitances of the capacitors C307 and C308 are both 1.5 pf.

6. The frequency-adjustable router according to claim 3, wherein: The second impedance matching circuit includes a capacitor C309, an inductor L40, and a capacitor C310. One end of the capacitor C309 is connected to one end of the inductor L40 and the second switch, and one end of the capacitor C310 is connected to the other end of the inductor L40 and the fourth switch. The other ends of the capacitor C309 and the capacitor C310 are both grounded.

7. The frequency-adjustable router according to claim 3, wherein: The first switch, the second switch, the third switch and the fourth switch are CMOS radio frequency switches.

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