TWI750426B - Frequency shift key modulation and demodulation device of communication transceiver - Google Patents

Frequency shift key modulation and demodulation device of communication transceiver Download PDF

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TWI750426B
TWI750426B TW107140695A TW107140695A TWI750426B TW I750426 B TWI750426 B TW I750426B TW 107140695 A TW107140695 A TW 107140695A TW 107140695 A TW107140695 A TW 107140695A TW I750426 B TWI750426 B TW I750426B
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modulation
circuit
frequency
demodulation
signal
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TW202019137A (en
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謝旺達
詹榮吉
陳奕龍
蕭豐進
陳淑娥
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國家中山科學研究院
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Abstract

一種通訊收發器之頻移按鍵調變與解調裝置，其中包括：一調變與倍頻電路，係用於接收一資料串列，並將該資料串列產生一調變信號；一電轉光介面電路，係用於接收該調變信號，並將該調變信號利用一傳輸裝置傳輸於一光轉電介面電路；一解調電路，該光轉電介面電路將該調變信號傳輸至該解調電路，該解調電路將該調變信號進行解調進而產生一輸出資訊。 A frequency-shift key modulation and demodulation device for a communication transceiver, comprising: a modulation and frequency multiplier circuit for receiving a data series and generating a modulation signal from the data series; an electrical-to-optical conversion circuit an interface circuit for receiving the modulated signal and transmitting the modulated signal to an optical-to-electrical interface circuit using a transmission device; a demodulation circuit, the optical-to-electrical interface circuit transmits the modulated signal to the The demodulation circuit demodulates the modulated signal to generate an output information.

Description

通訊收發器之頻移按鍵調變與解調裝置 Frequency shift key modulation and demodulation device for communication transceiver

本發明係關於一種調變與解調裝置，特別是關於一種通訊收發器之頻移按鍵調變與解調裝置。 The present invention relates to a modulation and demodulation device, in particular to a frequency shift key modulation and demodulation device of a communication transceiver.

頻移按鍵制(Frequency Shift Keying,FSK)調變技術係載波調頻方法之一，其中調制訊號於限定個數之分立值(數位訊號)間發生變化，再經調制的載波中，它的每一頻率代表一個位元或一組位元，一般而言，調變過程中僅於兩處發生頻移，分別代表位元1與0，而此種頻移方式於訊號傳輸開始與截止中使用，數位資料DATA傳輸速率(Data Rate)視需求而定為，通常用於軌道列車語音通訊每秒大約在10K位元左右；在傳統技術中，FSK調變/解調變方式是當DATA輸入為1或0時，其輸出頻率的變化(調變)當DATA為1時其fmax=fc+△f，當DATA為0時其fmin=fc-△f，其中fC是振盪器(CRYSTAL，XTAL)的中心頻率，△f為頻率的偏移量，一般稱呼fmax是Mark Frequency代表位元1，fmin是Space Frequency代表位元0，也就是說DATA經過FSK調變電路作用後，成為頻率f的調變信號，調變信號再依序經過倍頻電路、電轉光/光轉電介面電路後，再使用非同調調頻類型FSK解調變電 路，將調變信號還原成DATA。 Frequency Shift Keying (FSK) modulation technology is one of the carrier frequency modulation methods, in which the modulation signal changes between a limited number of discrete values (digital signals), and then in the modulated carrier, each of its Frequency represents a bit or a group of bits. Generally speaking, there are only two frequency shifts in the modulation process, representing bit 1 and 0 respectively. This frequency shift method is used in the start and end of signal transmission. The DATA transmission rate of digital data depends on the demand, usually about 10K bits per second for rail train voice communication; in traditional technology, the FSK modulation/demodulation method is when the DATA input is 1 or 0, its output frequency change (modulation) When DATA is 1, its f max =f c +△f, when DATA is 0, its f min =f c -△f, where f C is the oscillator ( CRYSTAL, XTAL) center frequency, △f is the frequency offset, generally called f max is Mark Frequency representing bit 1, f min is Space Frequency representing bit 0, that is to say DATA is acted by FSK modulation circuit After that, it becomes a modulation signal of frequency f, and the modulation signal passes through the frequency multiplier circuit, the electrical-to-optical/optical-to-electrical interface circuit in sequence, and then uses the non-coherent frequency modulation type FSK demodulation circuit to restore the modulated signal to DATA.

傳統FSK調變電路通常使用電晶體、振盪器和RC等零件實現，將DATA調變成頻率為f的信號；而倍頻電路也使用電晶體和LC濾波器(可調電容或電感)等零件實現，為配合後級解調方案，將頻率為f的調變信號，倍頻為頻率2xf的信號。因此，FSK調變與倍頻電路均以電晶體和RLC零件實現，此電路連結方式必須逐級檢測以判斷功能是否符合需求，因其輸出頻率f是固定且無法調整與控制，故針對不同的中心頻率必須更換不同的振盪器，以及2xf頻率會產生飄移(Drift)現象，當現象輕微者其上可調零件電容(或電感)容值(或感值)需重新調整，而失真嚴重時零件則必須更換；而電轉光介面電路與光轉電介面電路在傳統利用上分別是與RLC零件組成的小偏壓電路板來連接實現，其中電轉光介面元件與光轉電介面元件是採用豬尾巴(Pigtail)包裝，因此偏壓電路板必須以垂直方式銲接在收發器上，以利電轉光介面電路與光轉電介面電路的Pin腳能安裝在偏壓電路板上，此安裝方式進而會造成零組件銲接、檢測與維修不易且費時；傳統解調變電路通常使用解調裝置、振盪器、陶瓷濾波器和RLC等零件實現非同調調頻解調方案，先將2xf的調變信號與解調裝置內部混頻，混頻信號經過外部陶瓷濾波器濾波作用，取出中心頻率為FM頻段的信號後，再送回解調裝置內部實施解調變，其資料傳輸速率在500K Baud左右、輸入頻率範圍較小、輸入動 態範圍較小、頻率範圍較窄以及輸入功率需要較大。 The traditional FSK modulation circuit is usually implemented with components such as transistors, oscillators, and RC, to modulate DATA into a signal with a frequency of f; and frequency multiplier circuits also use components such as transistors and LC filters (adjustable capacitors or inductors). To achieve, in order to cooperate with the post-stage demodulation scheme, the modulated signal of frequency f is multiplied to the signal of frequency 2xf. Therefore, the FSK modulation and frequency doubling circuits are implemented with transistors and RLC components. The circuit connection method must be tested step by step to determine whether the function meets the requirements. Because the output frequency f is fixed and cannot be adjusted and controlled, it is necessary for different The center frequency must be replaced with a different oscillator, and the 2xf frequency will produce a drift (Drift) phenomenon. When the phenomenon is slight, the capacitance (or inductance) of the adjustable parts on it needs to be re-adjusted, and when the distortion is serious, the parts It must be replaced; and the electric-to-optical interface circuit and the optical-to-electrical interface circuit are traditionally realized by connecting with a small bias circuit board composed of RLC parts, among which the electric-to-optical interface element and the optical-to-electrical interface element are made of pigs. Pigtail packaging, so the bias circuit board must be soldered on the transceiver in a vertical manner, so that the pins of the electrical-to-optical interface circuit and the optical-to-electrical interface circuit can be installed on the bias circuit board. This installation method This will lead to difficult and time-consuming component welding, inspection and maintenance; traditional demodulation circuits usually use demodulation devices, oscillators, ceramic filters, and RLC components to implement non-coherent FM demodulation solutions. First, the modulation of 2xf The signal is internally mixed with the demodulation device. The mixed signal is filtered by an external ceramic filter, and the signal whose center frequency is the FM frequency band is taken out, and then sent back to the demodulation device for demodulation. The data transmission rate is about 500K Baud, The input frequency range is small, the input dynamic The state range is smaller, the frequency range is narrower, and the input power needs to be larger.

鑒於上述習知技術之缺點，本發明提出使用通訊收發器之頻移按鍵調變與解調裝置，可透過電路架構簡化與可程式化架構，進而具有設計彈性與擴充性。 In view of the above-mentioned shortcomings of the prior art, the present invention proposes a frequency-shift key modulation and demodulation device using a communication transceiver, which can simplify and program the circuit structure, thereby having design flexibility and expandability.

為了達到上述目的，根據本發明所提出之一種通訊收發器之頻移按鍵調變與解調裝置，其中包括：一調變與倍頻電路，係用於接收一資料串列，並將該資料串列進行調變並產生一調變信號；一電轉光介面電路，係用於接收該調變信號，並將該調變信號利用一傳輸裝置傳輸於一光轉電介面電路；一解調電路，該光轉電介面電路將該調變信號傳輸至該解調電路，該解調電路將該調變信號進行解調進而產生一輸出資訊。 In order to achieve the above object, a frequency-shift key modulation and demodulation device for a communication transceiver according to the present invention includes: a modulation and frequency multiplier circuit for receiving a data series and converting the data The serial modulates and generates a modulated signal; an electrical-to-optical interface circuit is used for receiving the modulated signal, and transmits the modulated signal to an optical-to-electrical interface circuit using a transmission device; a demodulation circuit , the optical-to-electrical interface circuit transmits the modulated signal to the demodulation circuit, and the demodulation circuit demodulates the modulated signal to generate an output information.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該調變與倍頻電路包括：一調變器、一本地振盪、一微控制器以及一調變波形轉換電路。 The frequency shift key modulation and demodulation device of the communication transceiver of the present invention, wherein the modulation and frequency multiplication circuit comprises: a modulator, a local oscillator, a microcontroller and a modulation waveform conversion circuit.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該調變波形轉換電路又包括：一第一混波器、一第一濾波器、一第一振盪器以及一第一可調電感。 The frequency shift key modulation and demodulation device of the communication transceiver of the present invention, wherein the modulation waveform conversion circuit further comprises: a first mixer, a first filter, a first oscillator and a first Adjustable inductance.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該調變與倍頻電路接收到該資料串列之後，該微控制器利用該調變器內部一暫存器的一字元格式來下達一 數位控制指令，而該調變器根據該數位控制指令與接收到該資料串列產生一FSK調變信號。 In the frequency-shift key modulation and demodulation device of the communication transceiver of the present invention, after the modulation and frequency multiplier circuit receives the data series, the microcontroller utilizes a register of a register inside the modulator. character format to download a A digital control command, and the modulator generates an FSK modulation signal according to the digital control command and the received data sequence.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該解調電路包括：一寬頻接收器、一第二可調電感、一反相器以及一解調波形轉換電路。 The frequency shift key modulation and demodulation device of the communication transceiver of the present invention, wherein the demodulation circuit comprises: a broadband receiver, a second adjustable inductor, an inverter and a demodulation waveform conversion circuit.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該解調波形轉換電路又包括：一第二混波器、一第二濾波器、一第二振盪器以及一第三可調電感。 The frequency shift key modulation and demodulation device of the communication transceiver of the present invention, wherein the demodulation waveform conversion circuit further comprises: a second mixer, a second filter, a second oscillator and a third Adjustable inductance.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該解調電路接收到該調變信號之後，利用該寬頻接收器進行該調變信號之解調變，進而產生一反相資料串列，再透過該反相器還原該原始資料串列。 In the frequency-shift key modulation and demodulation device of the communication transceiver of the present invention, after the demodulation circuit receives the modulation signal, the broadband receiver is used to demodulate the modulation signal, thereby generating an inverse signal. phase data series, and then restore the original data series through the inverter.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該電轉光介面電路為一雷射二極體。 In the frequency-shift key modulation and demodulation device of the communication transceiver of the present invention, the electrical-to-optical interface circuit is a laser diode.

本發明的該通訊收發器之頻移按鍵調變與解調裝置，其中該光轉電介面電路為一檢光二極體。 In the frequency-shift key modulation and demodulation device of the communication transceiver of the present invention, the optical-to-electrical interface circuit is a photodiode.

因此本發明使用通訊收發器之頻移按鍵調變與解調裝置，可透過電路架構簡化與可程式化架構，進而具有設計彈性與擴充性，以及利用FSK解調變電路來達成傳輸速率增加2M Baud(即增加4倍的傳輸量)，具有資料傳輸擴充的功能、輸入頻率範圍比較大與輸入動態範圍比較大之功效。 Therefore, the present invention uses the frequency-shift key modulation and demodulation device of the communication transceiver, which can simplify and program the structure of the circuit, thereby having design flexibility and scalability, and utilizes the FSK demodulation circuit to increase the transmission rate. 2M Baud (that is, increasing the transmission volume by 4 times), has the function of data transmission expansion, relatively large input frequency range and relatively large input dynamic range.

以上之概述與接下來的詳細說明及附圖，皆是為了能進一步說明本創作達到預定目的所採取的方式、手段及功效。而有關本創作的其他目的及優點，將在後續的說明及圖式中加以闡述。 The above overview and the following detailed description and accompanying drawings are all for the purpose of further illustrating the ways, means and effects adopted by the present creation to achieve the predetermined purpose. Other purposes and advantages of the present creation will be explained in the subsequent descriptions and drawings.

1:調變與倍頻電路 1: Modulation and frequency multiplication circuit

2:電轉光介面電路 2: Electric to optical interface circuit

3:傳輸裝置 3: Transmission device

4:光轉電介面電路 4: Optical to electrical interface circuit

5:解調電路 5: demodulation circuit

21:調變器 21: Modulator

22:本地振盪 22: local oscillator

23:微控制器 23: Microcontroller

24:調變波形轉換電路 24: Modulation waveform conversion circuit

241:第一混波器 241: First mixer

242:第一濾波器 242: First filter

243:第一振盪器 243: First oscillator

244:第一可調電感 244: first adjustable inductance

51:寬頻接收器 51: Broadband receiver

52:第二可調電感 52: Second adjustable inductor

53:反相器 53: Inverter

54:解調波形轉換電路 54: Demodulation waveform conversion circuit

541:第二混波器 541: Second mixer

542:第二濾波器 542: Second filter

543:第二振盪器 543: Second oscillator

544:第三可調電感 544: Third adjustable inductor

第一圖係為本發明調變與解調裝置之示意圖；第二圖係為本發明調變與倍頻電路之示意圖；第三圖係為本發明解調電路之示意圖；第四圖係為本發明2倍調變信號之示意圖；第五圖係為本發明振盪器的中心頻率之示意圖；第六圖係為本發明混頻信號之示意圖；第七圖係為本發明濾波器作用後取出差頻調變信號之示意圖；第八圖係為本發明解調變信號之示意圖。 The first diagram is a schematic diagram of the modulation and demodulation device of the present invention; the second diagram is a schematic diagram of the modulation and frequency doubling circuit of the present invention; the third diagram is a schematic diagram of the demodulation circuit of the present invention; The schematic diagram of the double modulation signal of the present invention; the fifth diagram is the schematic diagram of the center frequency of the oscillator of the present invention; the sixth diagram is the schematic diagram of the mixing signal of the present invention; A schematic diagram of a business trip frequency modulated signal; Figure 8 is a schematic diagram of a demodulated signal of the present invention.

以下係藉由特定的具體實例說明本創作之實施方式，熟悉此技藝之人士可由本說明書所揭示之內容輕易地了解本創作之優點及功效。 The following describes the implementation of the present invention with specific examples, and those skilled in the art can easily understand the advantages and effects of the present invention from the contents disclosed in this specification.

請參閱第一圖所示，本發明調變與解調裝置之示意圖，其中調變與解調裝置包含調變與倍頻電路1、電轉光介面電路2、傳輸裝置3、光轉電介面電路4與解調電路5所組成。調變與倍頻電路1係用於接收資料串列(DATA)，而該資料串列為1或0，因此當調變與倍頻電路1接收到資料串列其 輸入為1或0時，其輸出頻率的變化則為當DATA為1時其fmax=fc+△f，而當DATA為0時其fmin=fc-△f，其中fC是振盪器(XTAL)的中心頻率，△f為頻率的偏移量，fmax是Mark Frequency代表位元1，fmin是Space Frequency代表位元0，因此當調變與倍頻電路1接收資料串列(DATA)之後進行調變並產生一調變信號(2xf)；接著電轉光介面電路2用於接收調變信號(2xf)，並將調變信號(2xf)利用傳輸裝置3傳輸於光轉電介面電路4，接著光轉電介面電路4將調變信號(2xf)傳輸至解調電路5，而解調電路5將調變信號(2xf)進行解調後，再利用反相器產生輸出資訊；在一較佳實施例中，該電轉光介面電路2為一雷射二極體，其中雷射二極體是選用DIP(或SMD)取代傳統豬尾巴包裝，可直接銲接在收發器上，如此既可節省零組件所佔用空間，又可縮短銲接、檢測與維修時間；另外，該光轉電介面電路4為一檢光二極體，而檢光二極體也是選用DIP(或SMD)取代豬尾巴包裝，可直接銲接在收發器上，另外，該傳輸裝置3可以為無線通訊裝置或光纖。 Please refer to the first figure, which is a schematic diagram of the modulation and demodulation device of the present invention, wherein the modulation and demodulation device includes a modulation and frequency doubling circuit 1, an electrical-to-optical interface circuit 2, a transmission device 3, and an optical-to-electrical interface circuit 4 and demodulation circuit 5 are composed. The modulation and frequency multiplication circuit 1 is used to receive a data string (DATA), and the data string is 1 or 0, so when the modulation and frequency multiplication circuit 1 receives the data string, its input is 1 or 0, The change of its output frequency is f max =f c +△f when DATA is 1, and f min =f c -△f when DATA is 0, where f C is the center frequency of the oscillator (XTAL) , △f is the frequency offset, f max is the Mark Frequency representing bit 1, f min is the Space Frequency representing bit 0, so when the modulation and frequency multiplying circuit 1 receives the data sequence (DATA), the modulation is performed and generate a modulated signal (2xf); then the electrical-to-optical interface circuit 2 is used to receive the modulated signal (2xf), and transmit the modulated signal (2xf) to the optical-to-electrical interface circuit 4 using the transmission device 3, and then the optical-to-optical interface circuit 4 The electrical interface circuit 4 transmits the modulated signal (2xf) to the demodulation circuit 5, and the demodulation circuit 5 demodulates the modulated signal (2xf), and then uses an inverter to generate output information; a preferred embodiment Among them, the electrical-to-optical interface circuit 2 is a laser diode, in which the laser diode is made of DIP (or SMD) instead of the traditional pigtail packaging, which can be directly welded on the transceiver, which can save the cost of components. Occupying space, it can also shorten the welding, testing and maintenance time; in addition, the optical-to-electrical interface circuit 4 is a photodiode, and the photodiode is also selected by DIP (or SMD) instead of pig tail packaging, which can be directly welded on On the transceiver, in addition, the transmission device 3 may be a wireless communication device or an optical fiber.

請參閱第二圖所示，而第二圖是根據第一圖的調變與解調裝置之示意圖再進一步說明調變與倍頻電路之示意圖。調變與倍頻電路1是由調變器21、本地振盪22、微控制器23以及調變波形轉換電路24所組成，該調變器21分別與本地振盪22、微控制器23與調變波形轉換電路24進行電性連接，其中調變波形轉換電路24又包含第一混波器241、第 一濾波器242、第一振盪器243以及第一可調電感244所組成，調變器21又與第一混波器241電性連接，而第一混波器241分別與第一濾波器242與第一振盪器243電性連接，該第一振盪器243則與第一可調電感244電性連接；在一較佳實施例中，調變器21接收資料串列(DATA)並結合本地振盪22的弦波信號，並且該微控制器23根據調變器21內部暫存器(未顯示於圖式)的字元格式來下達數位控制指令，其中該字元格式為FS0與FS1，而該FS0與FS1則分別可以表示為00、01、10與11，因此透過不同的字元格式則分別擷取不同的頻率，該頻率擷取範圍為幾十MHz至幾百MHz；透過該數位控制指令進而程式化調變器21的功能，產生FSK調變信號，而FSK調變信號再視需要與振盪器的中心頻率利用混波器混頻後，產生和頻率與差頻率等混頻信號，混頻信號經過濾波器濾波作用，取出調變信號(2xf)，其中該調變信號(2xf)為差頻率2xf調變信號，因此本案的調變與倍頻電路1如此有程式化架構以及設計彈性與未來擴充性，又可縮短銲接、檢測與維修時間。 Please refer to the second figure, and the second figure is a schematic diagram of the modulation and frequency doubling circuit according to the schematic diagram of the modulation and demodulation device in the first figure. The modulation and frequency multiplication circuit 1 is composed of a modulator 21, a local oscillator 22, a microcontroller 23 and a modulation waveform conversion circuit 24. The modulator 21 is respectively connected with the local oscillator 22, the microcontroller 23 and the modulation The waveform conversion circuit 24 is electrically connected, wherein the modulation waveform conversion circuit 24 further includes a first mixer 241, a first A filter 242, a first oscillator 243 and a first adjustable inductor 244 are formed. The modulator 21 is electrically connected to the first mixer 241, and the first mixer 241 is connected to the first filter 242 respectively. It is electrically connected to the first oscillator 243, and the first oscillator 243 is electrically connected to the first adjustable inductor 244; in a preferred embodiment, the modulator 21 receives the data serial (DATA) and combines with the local The sine wave signal of oscillating 22 is oscillated, and the microcontroller 23 issues digital control commands according to the character format of the internal register (not shown in the figure) of the modulator 21, wherein the character format is FS0 and FS1, and The FS0 and FS1 can be represented as 00, 01, 10 and 11 respectively, so different frequencies are respectively captured through different character formats, and the frequency capture range is from tens of MHz to hundreds of MHz; through the digital control The instruction further programs the function of the modulator 21 to generate the FSK modulation signal, and the FSK modulation signal is mixed with the center frequency of the oscillator by the mixer as required to generate the sum frequency and the difference frequency and other mixing signals. The mixing signal is filtered by a filter, and the modulated signal (2xf) is taken out, wherein the modulated signal (2xf) is a 2xf modulated signal with a difference frequency, so the modulation and frequency multiplication circuit 1 of this case has a programmed structure and design. Flexibility and future expansion, and shorten welding, inspection and maintenance time.

接著，請參閱第三圖至第八圖所示，而第三圖至第八圖是根據第一圖的調變與解調裝置之示意圖再進一步說明解調電5之示意圖、2倍調變信號之示意圖、中心頻率之示意圖、混頻信號之示意圖、濾波器作用後取出差頻調變信號之示意圖與解調變信號之示意圖。該解調電路5是由寬頻接 收器51、第二可調電感52、反相器53以及解調波形轉換電路54組成，該寬頻接收器51分別與第二可調電感52、反相器53以及解調波形轉換電路54進行電性連接，其中，該解調波形轉換電路54又包含由第二混波器541、第二濾波器542、第二振盪器543以及第三可調電感544所組成，而該第二混波器541分別與第二濾波器542和第二振盪器543電性連接，該第二振盪器543則與第三可調電感544電性連接。 Next, please refer to Figures 3 to 8, and Figures 3 to 8 are schematic diagrams of the modulation and demodulation device according to the first figure, and further illustrate the schematic diagram of the demodulation circuit 5, the 2-fold modulation The schematic diagram of the signal, the schematic diagram of the center frequency, the schematic diagram of the mixing signal, the schematic diagram of the difference frequency modulated signal after the action of the filter, and the schematic diagram of the demodulated signal. The demodulation circuit 5 is connected by a broadband A receiver 51, a second adjustable inductance 52, an inverter 53 and a demodulation waveform conversion circuit 54, the broadband receiver 51 is respectively connected with the second adjustable inductance 52, the inverter 53 and the demodulation waveform conversion circuit 54. Electrically connected, wherein the demodulation waveform conversion circuit 54 further comprises a second mixer 541, a second filter 542, a second oscillator 543 and a third adjustable inductor 544, and the second mixer 541 The filter 541 is electrically connected to the second filter 542 and the second oscillator 543 respectively, and the second oscillator 543 is electrically connected to the third adjustable inductor 544 .

在一較佳實施例中，如圖四所示，首先當調變與倍頻電路1接收資料串列(DATA)之後進行調變並產生一調變信號(2xf)；接著電轉光介面電路2接收調變信號(2xf)後，並將該調變信號(2xf)利用傳輸裝置3傳輸於光轉電介面電路4，接著光轉電介面電路4將調變信號(2xf)傳輸至解調電路5，而解調電路5將調變信號(2xf)與第二振盪器543的中心頻率利用第二混波器541進行混頻，而該第二振盪器543的中心頻率如圖五所示；再接著，如圖六所示，產生和頻率與差頻率等混頻信號；接著，如圖七所示，混頻信號經過第二濾波器542濾波作用，取出差頻率調變信號(即捨棄和頻率信號)；再接著，如圖八所示，傳送至寬頻接收器51內部實施解調變，產生與原數位DATA反相的資料串列，其中Trace1(T1)波為原始資料串列，Trace2(T2)波為與原始波形反相之資料串列，最後，再經反相器53反相該反相資料串列進而還原成原始資料串列，再將該原始資料串列傳送至後級電路。 In a preferred embodiment, as shown in FIG. 4 , the modulation and frequency multiplication circuit 1 firstly modulates and generates a modulation signal (2xf) after receiving the data string (DATA); then the electrical-to-optical interface circuit 2 After receiving the modulated signal (2xf), the modulated signal (2xf) is transmitted to the optical-to-electrical interface circuit 4 by the transmission device 3, and then the optical-to-electrical interface circuit 4 transmits the modulated signal (2xf) to the demodulation circuit 5, and the demodulation circuit 5 mixes the modulated signal (2xf) with the center frequency of the second oscillator 543 using the second mixer 541, and the center frequency of the second oscillator 543 is shown in FIG. 5; Then, as shown in FIG. 6, a mixed frequency signal such as the sum frequency and the difference frequency is generated; then, as shown in FIG. 7, the mixed frequency signal is filtered by the second filter 542, and the difference frequency modulation signal is taken out (that is, the sum frequency is discarded. Then, as shown in Figure 8, it is sent to the broadband receiver 51 for demodulation and conversion to generate a data sequence that is inverse to the original digital DATA, wherein the Trace1 (T1) wave is the original data sequence, and the Trace2 The (T2) wave is a data sequence that is inverted from the original waveform. Finally, the inverted data sequence is inverted by the inverter 53 to restore it to the original data sequence, and then the original data sequence is sent to the subsequent stage. circuit.

因此本案的調變與倍頻電路具有有程式化架構以及設計彈性與未來擴充性，又可縮短銲接、檢測與維修時間；而解調電路具有良好的傳輸速率增，良好的資料傳輸擴充的功能、良好輸入頻率範圍比較大以及輸入動態範圍比較大。 Therefore, the modulation and frequency doubling circuit of this case has a programmable structure, design flexibility and future expansion, and can shorten the welding, testing and maintenance time; and the demodulation circuit has a good transmission rate increase, good data transmission expansion function , a good input frequency range is relatively large and the input dynamic range is relatively large.

需陳明者，以上所述僅為本案之較佳實施例，並非用以限制本創作，若依本創作之構想所作之改變，在不脫離本創作精神範圍內，例如：對於構型或佈置型態加以變換，對於各種變化，修飾與應用，所產生等效作用，均應包含於本案之權利範圍內，合予陳明。 It should be noted that the above descriptions are only the preferred embodiments of this case, and are not intended to limit the creation. If the form is changed, the equivalent effects produced by various changes, modifications and applications should be included in the scope of the rights of this case and are hereby stated.

1:調變與倍頻電路 1: Modulation and frequency multiplication circuit

2:電轉光介面電路 2: Electric to optical interface circuit

3:傳輸裝置 3: Transmission device

4:光轉電介面電路 4: Optical to electrical interface circuit

5:解調電路 5: demodulation circuit

21:調變器 21: Modulator

Claims (4)

一種通訊收發器之頻移按鍵調變與解調裝置，其中包括：一調變與倍頻電路，該調變與倍頻電路是由一調變器、一本地振盪、一微控制器以及一調變波形轉換電路所組成，其中該調變器分別與該本地振盪、該微控制器與該調變波形轉換電路進行電性連接，其中該調變與倍頻電路接收到一資料串列，該微控制器利用該調變器內部一暫存器的一字元格式來下達一數位控制指令，而該調變器根據該數位控制指令與接收到該資料串列產生一FSK調變信號，該FSK調變信號與振盪器的中心頻率利用混波器混頻後，產生和頻率與差頻率等一混頻信號，該混頻信號經過濾波器濾波作用，取出調變信號；一電轉光介面電路，係用於接收該調變信號，並將該調變信號利用一傳輸裝置傳輸於一光轉電介面電路；一解調電路，該光轉電介面電路將該調變信號傳輸至該解調電路，該解調電路將該調變信號進行解調進而產生一輸出資訊。 A frequency shift key modulation and demodulation device of a communication transceiver, which includes: a modulation and frequency multiplication circuit, the modulation and frequency multiplication circuit is composed of a modulator, a local oscillator, a microcontroller and a It is composed of a modulation waveform conversion circuit, wherein the modulator is electrically connected with the local oscillator, the microcontroller and the modulation waveform conversion circuit, wherein the modulation and frequency multiplication circuit receives a data series, The microcontroller uses a character format of a register in the modulator to issue a digital control command, and the modulator generates an FSK modulation signal according to the digital control command and the received data sequence, After the FSK modulation signal and the center frequency of the oscillator are mixed by a mixer, a mixed frequency signal such as the sum frequency and the difference frequency is generated. The mixed signal is filtered by a filter to take out the modulation signal; an electro-optical interface a circuit for receiving the modulated signal and transmitting the modulated signal to an optical-to-electrical interface circuit using a transmission device; a demodulation circuit, the optical-to-electrical interface circuit transmits the modulated signal to the solution and a modulation circuit, the demodulation circuit demodulates the modulation signal to generate an output information. 如申請專利範圍第1項通訊收發器之頻移按鍵調變與解調裝置，其中該解調電路是由一寬頻接收器、一第二可調電感、一反相器以及一解調波形轉換電路組成，其中該寬頻接收器分別與該第二可調電感、該反相器以及該解調波形轉換電路進行電性連接，其中該解調電路接收到該調變信 號之後，利用該寬頻接收器進行該調變信號之解調變，進而產生一反相資料串列，再透過該反相器反相該反相資料串列產生該輸出信號。 According to the first patent application scope, a frequency-shift key modulation and demodulation device for a communication transceiver, wherein the demodulation circuit is composed of a broadband receiver, a second adjustable inductor, an inverter and a demodulation waveform conversion Circuit composition, wherein the broadband receiver is electrically connected with the second adjustable inductance, the inverter and the demodulation waveform conversion circuit, wherein the demodulation circuit receives the modulation signal After the signal, the broadband receiver is used to demodulate the modulated signal, thereby generating an inverted data sequence, and then the inverter is used to invert the inverted data sequence to generate the output signal. 如申請專利範圍第1項通訊收發器之頻移按鍵調變與解調裝置，其中該電轉光介面電路為一雷射二極體。 For example, the frequency-shift key modulation and demodulation device of the communication transceiver of the scope of the patent application, wherein the electrical-to-optical interface circuit is a laser diode. 如申請專利範圍第1項通訊收發器之頻移按鍵調變與解調裝置，其中該光轉電介面電路為一檢光二極體。 For example, the frequency-shift key modulation and demodulation device of the communication transceiver in the first item of the patent application scope, wherein the optical-to-electrical interface circuit is a photodiode.
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