TW595133B - Wireless signal transceiver - Google Patents

Abstract

There is provided a wireless signal transceiver, which includes a crystal oscillator, a phase-locked loop, a power amplifier, a current controller and a demodulator. The carrier signal generated by the crystal oscillator is FSK-modulated by the phase-locked loop to produce an output signal. The power of the output signal is amplified by the power amplifier for being transmitted by an antenna to a remote site. The current controller is connected to the power amplifier, and utilizes digital signal of '1' or '0' to perform on/off switch on the power switch. This modulation is known as OOK modulation, which controls the output current of the power amplifier.

Description

~ ____ Years and Years ^ Shang Wu, Send -------- The technical field to which the invention belongs: 'The present invention is a wireless signal transceiver, especially a form with both frequency shift key (FSK) and binary. Wireless signal transceiver with modulation (〇⑽) function. Prior technology: '' Wireless communication is a method that uses radio waves to transmit signals from the transmitting end to the receiving end. 'Because radio waves have the advantages of fast transmission speed and wide transmission range, the application of wireless communication has become increasingly popular, and related development has become faster. Its main basic structure includes a transmitter located at the transmitting end and a receiver located at the receiving end; the transmitting end uses the transmitter to encode, modulate and amplify the signal, and transmits the signal to the receiver through radio waves, and then The receiver decodes, demodulates and amplifies the signal, and finally the signal is restored and output by the receiving end. Figure 1 is a block diagram of a conventional wireless signal transceiver; the transceiver is a communication device with both signal transmitting and receiving functions, including a crystal oscillator 11 (XTAL oscillator). Cowley

Generate a carrier signal at a resonant frequency; a phase-locked 1 oop 'referred to as PLL)' can receive the carrier signal-number of the crystal oscillator 丨, and is connected to the input line 14a and the input line 14b respectively 'Among which the input line 14a is a channel The selection line can provide phase-locked loop 13 two different frequency channel switching, and the incoming line 1 4 b is a data input line that can input data to the phase-locked loop digitally.

1 3, so that it can adjust the frequency shift key (FSK) of the carrier signal according to the digital data of the data input line and generate an output signal; a power amplifier 15. (power amplifier, referred to as PA), which is related to phase lock Ring 13 gives 595133 to send it to a distance. The receiving and transmitting funnel 10 includes a selective receiving antenna, a low noise amplifier 18 (low noise amp 1 ifier, LNA for short), a mixer 19, a / boge 20 and a demodulator 21 ( demodulati〇n). After receiving the signal sent by the transmitter (or transceiver) of the receiver, the receiving antenna 17 must first pass through the low-noise amplifier 18, the mixer 19, and the filter 20, and then demodulate it. The converter 21 demodulates the signal, converts it into the original signal and outputs it. Generally speaking, in order to improve the distance and efficiency of signal transmission, the transceiver usually does not directly transmit the original signal, but converts the original signal to another waveform suitable for the transmission medium before transmitting. Such waveform conversion is called It is "modulation"; similarly, the transceiver must convert the modulated signal into the original signal after demodulating the received signal. At present, the commonly used signal modulation techniques mainly include binary modulation (on-off keying (referred to as 00K)), amplitude shift keying (referred to as ASK), frequency shift keying (referred to as FSK), phase shifting Phase shift keying (PSK), etc. The modulation and demodulation of the signal must be relative, that is, if the signal is modulated by a certain technology during the transmission process, it must also be the same when demodulated. Technology can restore the signal.

Page 7 595133 Along .4. ^ Correction 丨. Last month B 褊 charge 丨 _; ___ V. Description of the invention (3) CZ__21¾-~ — Because the transceiver of the conventional technology is a frequency shift key (FSK) modulation Technology for signal transmission, so the receiver (or transceiver) at the receiving end must also use the frequency shift key (FSK) technology to demodulate the signal; if the receiver (or transceiver) at the receiving end uses the binary form Modulation technology (00K). 'It will not be possible to demodulate the signals transmitted by the conventional technology and transceiver' because the signals transmitted by the transmitter of the conventional technology are modulated by the frequency shift key (fs κ) . This will cause great confusion for users or transceiver manufacturers. For example, many car anti-theft devices (or iron roll doors) are still designed to set functions by wireless signal transmission. The anti-theft device is equipped with a wireless signal receiver (or transceiver), and a wireless signal transceiver is provided on the vehicle owner's body. Since most of the receivers (or transceivers) of the anti-theft device are still used for signal demodulation, The modulation in the form of carry (00K) is mainly used, so that the transceiver on the vehicle owner must also be modulated with the technology of binary modulation (00K). However, at present, the frequency shift key (FSK) technology is used to modulate and demodulate signals. There has been a trend to gradually replace the binary form of modulation technology (00K). Therefore, the current receiver (transceiver) inside the car alarm has The signal may be demodulated by frequency shift key (FSK), or it may be demodulated by binary modulation technology (00K), and the transceiver on the vehicle owner can communicate with the receiver inside the car alarm ( Transceiver) distribution valley must also be designed for specifications with FSK and 00K signal modulation functions, which will cause considerable confusion for manufacturers and users. Therefore, the relevant industry is committed to the development of wireless communications Can design a kind of

Page 8 595133 V. Description of the invention (4) 92.4 · η Correction —m, a transceiver with 00K and FSK signal modulation functions to solve the inconvenience and trouble caused by it. SUMMARY OF THE INVENTION The main object of the present invention is to provide a wireless signal transceiver, which has the functions of 00K and FSK signal modulation. '' The wireless signal transceiver of the present invention includes at least a crystal oscillator, a phase-locked loop, a power amplifier, a transmitting antenna, and a current controller. The crystal oscillator is connected to a reference circuit, and the positive and negative voltages provided by the reference circuit are applied to the two sides of the crystal to generate a carrier wave number k with a resonant frequency. The phase-locked loop can receive the carrier signal of the crystal oscillator, and Separately with the channel selection line can provide a phase-locked loop for channel switching between two different frequencies, and the data input line can digitally input data to the phase-locked loop == connection, while the phase-locked loop is based on data The digital data of the input line modulates the frequency shift key (FSK) of the carrier and generates an output signal. / The half-powered enemy device is connected to the output of the phase-locked loop, which can amplify the power of the phase-locked ‘´ Hyogo output 彳 § and send it to $ through the transmitting antenna. The current controller is connected to the power amplifier, which can = resistance and change the current of the power amplifier by the resistance: make :: j the amplitude changes at 2 to generate the amplitude shift key (ASK) tone: 5… = Including a receiving antenna, a low-noise amplifier,-the effect of ... to consider the wave ... a demodulator 'receiving antenna can receive remote transmission =

(Or transceiver) for the signal sent by the processor, filter, and finally output 0, and then demodulate the signal by demodulator with low noise amplifier, mixing, and input. The present invention mainly uses the phase-locked output signal can! Health FSK Tuning: Double / Open Carrier No. 1 change for 1 week to make amplification. It also has a -current controller, which has the function of controlling the power of the sheep's crying current, which can change the amplitude of the wheel-out signal. Big 丨 produces a wave with a tunable modulation. Since the two-signal transceiver disclosed in the present invention has both the functions of modulation and FSK modulation, it can be applied to receivers (or transceivers) demodulated by 00K or FSK technology, respectively. Compared with the conventional technology, the present invention The invention has a wider application range and a higher market / competitiveness. In particular, the Qinggui reviewing committee members thoroughly understand and agree with the purpose and effect of the present invention, and they are explained in detail with the drawings as follows: Figure 1 is a block diagram of a conventional wireless communication transceiver; Figure 2 is a wireless communication of the present invention Block diagram of the transceiver. 1 1 Crystal oscillator 1 3 Phase-locked loop 1 5 Power amplifier 1 7 Receiving antenna Description of the drawing number 1 0 Transceiver 12 Reference circuit 1 4 a, 1 4 b Input line 1 6 Transmitting antenna

595133 V. Description of the invention (6) 1 8 Low noise amplifier 2 0 Filter 22 Power controller 31 Crystal oscillator 3 3 Phase-locked loop 35 Voltage controlled oscillator 37 Current controller 3 9 Receiver antenna 41 Mixer 4 3 ~ demodulator implementation: 1 9 mixer 21 demodulator 3 0 transceiver 32 reference circuit, 34a, 3 4b input line /-36 power amplifier 3 8 transmitting antenna 4 0 low noise amplifier 42 ~ filtering 44 send and receive control nodes

Figure 2 is a block diagram of the wireless communication transceiver of the present invention. The transceiver of the present invention is 30 including a crystal oscillator 31, which is connected to a reference circuit 32 and is applied to the crystal using the positive and negative voltages provided by the crystal. On both sides, the solar and solar body used can be a quartz crystal with a piezoelectric effect (piezoelectric effect). After applying an external voltage, a carrier signal with a resonant frequency will be generated; a phase-locked loop 3 3, which is oscillated with the crystal. The output terminals of the converter 3 丨 are connected and can receive the carrier signal input by the crystal oscillator 31 and the signal data input by the input lines 34a and 34b. The input line 34a is a channel selection line and can provide a phase-locked loop 33. Two different frequency channels are selected and switched, and the input line 34b is a data input line, which is used to digitally input the gate material to the phase-locked loop 33 so that it will be matched with the input digital data. '' The frequency shift key (FSK) is adjusted and an output signal is generated / §

Page 11 595133 V. Description of the invention (7) 92 · 4 · Π The year, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month A voltage controlled oscillator 35 (voltage controlled 〇scillatQi ^ abbreviated as VC 0) locks the frequency of the output signal in a voltage-controlled manner; a power amplifier 36 is connected to the output of the phase-locked loop 33 and can output the power of the output signal Zoom in and send to a distance through the launch line 38. ϋ The effect of the electric power of the transmitter 36 produces a flowable output signal of the two controllers 37. The output signal of the controller 37 is due to a bit signal. "Mingzhi special flow" and the effect, because the carry shape is a value, so that the amplitude can also be this, if the output is off, the sign of the amplitude is that by adjusting the output type, the power can be changed to turn on. When the switch is a signal, the waveform will be closed. A current controller 37 is used to control the power to amplify the current of the entire power amplifier 36 to achieve the effect of changing the signal (0 0 KK) when the signal is transmitted. Among them, the current control resistor 'uses the characteristic of adjustable resistance to control the power amplification value of the electric amplifier 36 to change, resulting in the effect of achieving 00K modulation. In addition, the current is off, which is used to control the current on state of the power amplifier 36. After the software control, the digital output can produce a waveform output with an amplitude. Conversely, the output signal will not be able to reach the same 00K modulation because there is no current. In addition, the 'transceiver 30 of the present invention further includes a receiving day, g; 39, a low noise amplifier 40, a mixer 41, a filter 4 2 and a demodulator 4 3' receiving The antenna 39 can receive the signal sent by the remote transmitter (or transceiver), and then pass through the low noise amplifier 40, the mixer 4 1, and the filter 4 2

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Finally, the signal is demodulated and restored by the demodulator 43 before outputting it. The demodulation technology of the demodulator 43 of the present invention must be matched with the modulation mode of the received signal, so that the received signal can be smoothly restored and restored, and the power amplifier 36 is further connected to a transceiver control node 44. When the node 44 is connected, the power amplifier 36 can send data for control signals, so that the power amplifier 36 switches to the transmission mode or the reception mode. The transmitter 30 must be in the transmission mode to transmit signals. Receive signals in connected mode. In summary, the “transceiver of the present invention can modulate the carrier signal by a phase-locked loop” so that the output signal can generate a modulated waveform! In order to change the amplitude of the output signal, the output signal can produce a 〇κκ modulated waveform. Therefore, the wireless signal transceiver disclosed in the present invention will have both OOK and FSK modulation functions, which can be applied to receivers (or transceivers) demodulated with 〇κ or FSK technology, respectively. Known technology, the present invention has a wider range of applications for receiving and sending, which will be more competitive in the market. ^ Of course, the above is just one of the preferred examples of the wireless signal transceiver of the present invention, and it is not limited to the scope of the present invention. Anyone skilled in t who does not depart from the spirit of the present invention All modifications should belong to the scope of the present invention, so the protection scope of the present invention should be based on the scope of patent application described below.

Page 13 92. 4 · U amendment 丨 · Month, Day · Brief description of the diagram Figure 1 is a block diagram of a conventional wireless communication transceiver; 595133

Claims (1)

595133 92. 4 · The month of the reference year 6. The scope of patent application The scope of patent application 1. A wireless signal transceiver includes at least: = a crystal oscillator, which can generate a carrier signal; and a phase-locked loop can receive the The carrier signal generated by the crystal oscillator is adjusted by the j-frequency ^ shift key (FSK) to generate an output signal; the rate is amplified to be 'connected to the output of the phase-locked loop, which can amplify the L number of the wheel. And the current signal is transmitted to a remote place through a transmitting antenna; and a current controller is connected to the power amplifier, which controls the current of the power amplifier to change the amplitude of the output signal, so that the output signal is being transmitted. It can produce a binary modulation (00K) effect when in operation. ^ The wireless signal transceiver according to item 1 of the scope of the patent application, wherein the crystal oscillator is provided with a positive and negative voltage on the two sides of the crystal, so that the crystal oscillator can generate a carrier signal with a resonance frequency. 3 · / The wireless signal transceiver as described in item 1 of the scope of patent application, wherein the phase-locked loop is connected to a channel selection line, and the channel selection line can provide two channels of different frequencies to make the phase-locked loop The output signal can be switched by frequency selection in the two channels it provides. 4 · The wireless signal transceiver according to item 1 of the scope of patent application, wherein the phase-locked loop is connected to a data input line, and the data input line can input digital data to the phase-locked loop, so that The digits are modulated by the frequency shift key. 5. The wireless signal transceiver according to item 1 of the scope of patent application, wherein the phase-locked loop uses a voltage-controlled oscillator (VCO) to control the frequency in a voltage-controlled manner. Page 15 595133 92. 4. Date of 11th November 6. Patent application scope Amendment 丨 Charge | Locking 'so that the output signal will not be caused by phase changes or offsets. 6 · The wireless signal transceiver according to item 1 of the scope of patent application, wherein the 2-rate amplifier is further connected to a transceiver control node, and the node can use the function to send a digital control signal and send the power The amplifier switches to transmit mode or receive mode. 7. The wireless signal transceiver according to item 1 of the scope of patent application, wherein the electric > > ML control is a variable resistor. 8. The wireless signal transceiver according to item 1 of the scope of patent application, wherein the current controller is a switch. 9 · The wireless signal transceiver as described in the first item of the patent claim, wherein the transceiver further includes a receiving antenna, and the receiving antenna can receive a signal sent by a remote transmitter. 1 0 · The wireless signal transceiver as described in item 1 of the patent application scope, wherein the signal must be processed by a low-noise amplifier, a mixer, and a filter, and then the signal is demodulated and output by a demodulator. .