TWM509982U - Switchable antenna - Google Patents

Description

Switching antenna

The present invention relates to an antenna, and more particularly to a switched antenna capable of switching strong waves.

In 2012, the government vigorously promoted the digitalization of wireless TVs, which not only turned off analog signals of wireless TVs, but also fully converted them into digital signals. The public only needs to complete the installation of the receiving antenna, and can broadcast 15 to 20 high-definition TV programs without paying the viewing fee through the audio-visual device. Up to now, there are more than 3.5 million viewers who can watch digital TV programs.

However, in some areas, the distance from the digital signal transmitting station is too far, or the transmission path of the signal is blocked, resulting in poor reception quality, which causes problems such as image breakage, pause, and disconnection during playback. At this time, users often use Booster as a means of signal enhancement, which can improve the quality of reception, but often the effect of improvement is limited. This is because the strong wave must be able to effectively enhance the signal when the signal strength is sufficient, and the TV reception quality is improved. If the source signal strength is insufficient, or the Signal Noise Ratio (SNR) is too low. At this time, the signal amplitude gain is performed by the strong wave device, and the amplitude of the noise and the interference is also amplified, so that The received signal and the noise are simultaneously played on the TV, and the quality of the reception still cannot be improved. In addition, the use of a strong wave filter in a region where the signal strength is sufficient will also cause a drop in the quality of the reception. Because the signal amplitude gain is transmitted through the strong wave device, an over-load may occur, and the television may exhibit image distortion. problem.

Therefore, an object of the present invention is to provide a switched antenna that can automatically or manually switch the signal amplitude gain function according to the quality of the received signal to appropriately improve the reception quality.

Thus, the novel switched antenna includes an antenna unit and a gain switching unit.

The antenna unit is configured to receive a wireless signal and output an antenna signal related to the wireless signal.

The gain switching unit is electrically connected to the antenna unit and includes a power amplifying module. The power amplification module receives the antenna signal and outputs a gain signal related to the antenna signal. Wherein, the power amplification module is controlled by a switching signal, and switches between a strong wave mode and a non-strong wave mode. In the strong wave mode, the power amplification module makes the gain of the gain signal amplitude a positive value; in the non-strong wave mode, the power amplification module makes the gain of the gain signal amplitude not a positive value.

The function of the present invention is that the switching signal can be automatically or manually adjusted by the strength of the antenna signal to switch the power amplification module to the amplitude gain of the antenna signal, and the receiving quality is appropriately improved.

1‧‧‧Antenna unit

2,4,5‧‧‧gain switching unit

21‧‧‧Power Amplifier Module

211‧‧Amplifier

212‧‧‧ switch

213‧‧‧Logic gate

22‧‧‧Responsible switching circuit

221‧‧‧Signal Detection Module

23‧‧‧Switch

24‧‧‧Switching circuit

241‧‧‧ Whole wave machine

242‧‧‧Signal Detection Module

3‧‧‧Transmission unit

31‧‧‧Power Module

311‧‧‧Power source

312‧‧‧Power inserter

32‧‧‧Bandpass filter

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a signal flow diagram illustrating a first embodiment of the switched antenna of the present invention; FIG. 2 is a signal A flow chart illustrating a second embodiment of the switched antenna of the present invention; and FIG. 3 is a signal flow diagram illustrating a third embodiment of the switched antenna of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1, a first embodiment of the switched antenna of the present invention includes an antenna unit 1, a gain switching unit 2, and a transmission unit 3.

The antenna unit 1 is configured to receive a wireless signal and output an antenna signal related to the wireless signal.

The gain switching unit 2 is electrically connected to the antenna unit 1 and includes a power amplifying module 21 and a feedback switching circuit 22 having a signal detecting module 221. The power amplifying module 21 has an amplifier 211, a switch 212 between the antenna unit 1 and the amplifier 211, and a logic gate 213. The logic gate 213 outputs a logic level associated with a switching signal to cause the switch 212 to assume a short circuit condition or an open circuit state according to the logic level. In the open state, the switch 212 can guide the antenna signal to the amplifier 211, and the amplifier 211 outputs a gain signal. The gain of the gain signal amplitude is a positive value, so that the power amplification module 21 exhibits a strong wave mode. In addition, in the short-circuit state, the switch 212 causes the antenna signal not to be input to the amplifier 211, but directly outputs the gain signal. Therefore, the gain of the gain signal amplitude is not positive, and the power amplifying module 21 is in a non-strong wave mode.

The transmission unit 3 includes a power module 31 and a Band Pass Filter (BPF) 32. The power module 31 has a power source 311 and a power inserter 312. The power of the power source 311 is transmitted to the amplifier 211 via the power inserter 312 and forms a power supply loop. At the same time, the band pass filter 32 receives the gain signal and intercepts a signal of a specific frequency band, and outputs a filtered signal related to the interception result. Finally, the power inserter 312 receives the filtered signal and outputs a terminal signal associated with the filtered signal.

At the same time, the signal detection module 221 also receives the filtered signal and compares it with a signal standard value to output the switching signal related to the comparison result. It should be noted that the first embodiment is to feedback the filtered signal to the signal detecting module 221 to determine the quality of the antenna signal. If the signal detecting module 221 determines that the amplifier 211 can be used for signal enhancement according to the comparison between the filtered signal and the standard value of the signal, the switching signal that enables the switch 212 to be in the open state is output to the signal. Logic gate 213 to positively gain the amplitude of the antenna signal. However, if the signal detection module 221 determines that the filtered signal has reached the standard intensity or detects too much noise and is not suitable for signal enhancement using the amplifier 211, the output enables the switch 212 to be short. The switching signal of the path state is applied to the logic gate 213 without positive gain of the amplitude of the antenna signal. In this way, the reception quality can be appropriately improved without using the amplifier 211 to perform signal amplitude gain arbitrarily. It is to be noted that the first embodiment can also feedback the gain signal to the signal detection module 221 to perform quality judgment of the antenna signal, but to avoid causing the frequency unrelated to the received channel to affect the The signal detection module 221 determines the feedback signal, so it is preferable to feedback the filtered signal.

Therefore, the first embodiment uses the signal detection module 221 to receive the filtered signal to determine the quality of the antenna signal, and automatically switches the power amplification module 21 to the antenna signal amplitude gain. Features to properly improve the quality of the reception.

In addition, the switching signal can also be adjusted manually. Therefore, as shown in FIG. 2, a second embodiment of the switched antenna of the present invention includes an antenna unit 1, a gain switching unit 4, and a transmission unit 3.

The antenna unit 1 and the transmission unit 3 are the same as the first embodiment. Therefore, the related structure of the antenna unit 1 and the transmission unit 3 will not be described again.

The gain switching unit 4 is electrically connected to the antenna unit 1 and includes a power amplifying module 21 and a switch 23. The power amplifying module 21 has an amplifier 211, a switch 212 between the antenna unit 1 and the amplifier 211, and a logic gate 213. The switch 23 is selectively switchable between a high potential and a low potential and outputs a switching signal associated with the switching result. The logic gate 213 outputs a logic level according to the switching signal, so that the switch 212 is short-circuited according to the logic level. State or a disconnected state. In the open state, the switch 212 can guide the antenna signal to the amplifier 211, and the amplifier 211 outputs a gain signal. The gain of the gain signal amplitude is a positive value, so that the power amplification module 21 exhibits a strong wave mode. In addition, in the short-circuit state, the switch 212 does not input the antenna signal into the amplifier 211, but directly outputs the gain signal. Therefore, the gain of the gain signal amplitude is not positive, and the power amplification module 21 is presented. A non-strong wave mode.

Thereby, when a user wants to use the amplifier 211 to gain the amplitude of the antenna signal, the switch 23 outputs the switching signal having the high potential to the logic gate 213. The logic gate 213 is configured to convert the switching signal into a logic level that enables the switch 212 to assume the open state to perform a positive gain on the amplitude of the antenna signal. However, if the user does not want to gain the amplitude of the antenna signal through the amplifier 211, the switch 23 outputs the switching signal having the low potential to the logic gate 213. The logic gate 213 is configured to convert the switching signal into a logic level that enables the switch 212 to assume the short-circuit state without performing a positive gain on the amplitude of the antenna signal. Therefore, the second embodiment is a function of the user to manually switch the power amplification module 21 to the antenna signal amplitude gain.

In addition, the switching signal can also be directly adjusted by the antenna signal. Therefore, as shown in FIG. 3, a third embodiment of the switched antenna of the present invention includes an antenna unit 1, a gain switching unit 5, and a transmission unit 3.

Wherein the antenna unit 1 and the transmission unit 3, and the first The embodiment is the same, and therefore, the related structure of the antenna unit 1 and the transmission unit 3 will not be described again.

The gain switching unit 5 is electrically connected to the antenna unit 1 and includes a power amplifying module 21 and a switching circuit 24. The power amplifying module 21 has an amplifier 211, a switch 212 between the antenna unit 1 and the amplifier 211, and a logic gate 213. The switching circuit 24 has a whole wave 241 and a signal detecting module 242. The wave modulator 241 receives and adjusts the antenna signal to output a detection signal related to the adjustment result. The signal detection module 242 receives the detection signal and compares it with a signal standard value to output a switching signal related to the comparison result. The logic gate 213 outputs a logic level associated with the switching signal, so that the switch 212 assumes a short circuit state or an open state according to the logic level. In the open state, the switch 212 can guide the antenna signal to the amplifier 211, and the amplifier 211 outputs a gain signal. The gain of the gain signal amplitude is a positive value, so that the power amplification module 21 exhibits a strong wave mode. In addition, in the short-circuit state, the switch 212 causes the antenna signal not to be input to the amplifier 211, but directly outputs the gain signal. Therefore, the gain of the gain signal amplitude is not positive, and the power amplifying module 21 is in a non-strong wave mode.

Thereby, the antenna signal is simultaneously input to the power amplifying module 21 and the switching circuit 24, and the filtering or amplitude adjustment is performed by the whole waver 241 of the switching circuit 24, and the detection signal is output as the signal detecting mode. Group 242 determines if the antenna signal is suitable for use in the amplifier 211 for the basis of amplitude gain. If the signal detection module 242 determines the antenna signal The amplifier 211 can be used for signal enhancement, and the switching signal that enables the switch 212 to assume the open state is output to the logic gate 213 to positively gain the amplitude of the antenna signal. However, if the signal detecting module 242 determines that the antenna signal has reached the standard intensity or detects too much noise and is not suitable for signal enhancement using the amplifier 211, the output enables the switch 212 to be in the short circuit state. The switching signal is applied to the logic gate 213 without a positive gain on the amplitude of the antenna signal. In this way, the quality of the reception can be automatically improved.

It is worth mentioning that the above embodiments are switches that generate the switching signal in different ways to perform signal amplitude gain. Wherein, the method can be judged and integrated by a multiplexer, and a switching signal related to the operation result is output according to a logic operation, so that the timing of using the amplifier 211 can be more accurate. And the function of automatically or manually switching the amplitude gain of the antenna signal can be selected according to the time.

In summary, the novel switched antenna can automatically switch the function of the signal amplitude gain according to the quality of the antenna signal to appropriately improve the receiving quality. In addition, the user can manually switch the function of the signal amplitude gain, and the use is both elastic, so that the object of the present invention can be achieved.

However, the above is only a preferred embodiment of the present invention, and when it is not possible to limit the scope of the present invention, any simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification are It is still within the scope of this new patent.

1‧‧‧Antenna unit

2‧‧‧Gain switching unit

21‧‧‧Power Amplifier Module

211‧‧Amplifier

212‧‧‧ switch

213‧‧‧Logic gate

22‧‧‧Responsible switching circuit

221‧‧‧Signal Detection Module

3‧‧‧Transmission unit

31‧‧‧Power Module

311‧‧‧Power source

312‧‧‧Power inserter

32‧‧‧Bandpass filter

Claims (10)

A switching antenna includes: an antenna unit for receiving a wireless signal and outputting an antenna signal related to the wireless signal; and a gain switching unit electrically connected to the antenna unit, the gain switching unit including a power amplification a module, the power amplification module receives the antenna signal, and outputs a gain signal related to the antenna signal; wherein the power amplification module is controlled by a switching signal, and in a strong wave mode and a non-strong wave mode Switching between, in the strong wave mode, the power amplification module makes the gain of the gain signal amplitude positive, and in the non-strong wave mode, the power amplification module makes the gain of the gain signal amplitude not positive . The switching antenna of claim 1, wherein the power amplifying module has an amplifier, and a switch between the antenna unit and the amplifier, the switch is controlled by the switching signal, and is in a short circuit state or a disconnected state, in which the amplifier receives the antenna signal and outputs the gain signal, so that the power amplifying module is in the strong wave mode, and in the disconnected state, the antenna signal is directly outputted into the gain The signal causes the power amplifying module to assume the non-strong wave mode. The switching antenna of claim 2, wherein the power amplifying module further has a logic gate, and the logic gate outputs a logic level related to the switching signal, and the switch selectively selects according to the logic level. The antenna signal is directed to input or not to the amplifier. The switching antenna according to claim 1, further comprising a transmission unit, The transmission unit includes a power module that forms a power supply loop with the power amplification module. The switching antenna of claim 4, wherein the transmission unit further comprises a Band Pass Filter (BPF), the band pass filter is configured to receive the gain signal, and intercept a signal of a specific frequency band to A filtered signal associated with the interception result is output. The switching antenna of claim 5, wherein the power module has a power source and a power inserter, and the power of the power source is transmitted to the power amplifier module via the power inserter. The power inserter simultaneously receives the filtered signal and outputs a terminal signal associated with the filtered signal. The switching antenna of claim 5, wherein the gain switching unit further includes a feedback switching circuit, the feedback switching circuit has a signal detecting module, and the signal detecting module receives the filtered signal, and Comparing with a signal standard value, and outputting the switching signal related to the comparison result. The switching antenna of claim 1, wherein the gain switching unit further comprises a switch, the switch selectively switching between a high potential and a low potential, and outputting the correlation related to the switching result Switch the signal. The switching antenna according to claim 1, wherein the gain switching unit further comprises a switching circuit, the switching circuit receives the antenna signal, and compares with a signal standard value, and outputs the switching signal related to the comparison result. . The switching antenna of claim 9, wherein the switching circuit has a whole wave device and a signal detecting module, the whole wave device receives and adjusts the antenna signal to output a detection signal related to the adjustment result, and the signal detecting module receives the detection signal and The signal standard value is compared and the switching signal associated with the comparison result is output.