CN2361048Y - Radio telephone switching device - Google Patents

Abstract

The utility model relates to a radio telephone switching device. The utility model comprises a host telephone and an extension telephone, wherein, the host telephone is arranged in earphones; the extension telephone is connected with a handset; the circuit of the host telephone is composed of an earphone receiving circuit, an earphone audio frequency amplifying circuit, a microphone audio frequency amplifying circuit, a microphone encoding circuit, a microphone modulation circuit, a microphone power amplifying circuit, and a microphone transmitting circuit; the circuit of the extension telephone is composed of an extension telephone receiving circuit, an extension telephone audio frequency amplifying circuit, an extension telephone decoding circuit, an extension telephone control circuit, an extension telephone modulation circuit, an extension telephone power amplifying circuit, and an extension telephone transmitting circuit. The utility model can be hung on ears when used, and the utility model does not need to be held by hands, so when a person has a conversation on a telephone, both hands of the person can still do normal operation.

Description

The radio telephone adapter

The utility model relates to Ridio communications device, refers in particular to a kind of radio telephone adapter.

Current society has entered information-intensive society, the production that people are daily, life, work, study more and more be unable to do without the exchange and the transmission of information, therefore, communication device just grows up, at first be that telephone has been popularized town and country rapidly, then be that radio pager also almost is staff one machine, it is found that afterwards, the mobile phone machine, be commonly called as mobile phone, have the advantage of above-mentioned two kinds of communication devices concurrently, the communication that can flow, efficiency of information transfer is higher, so mobile phone is subjected to people's favor day by day, become the favorite a kind of communication tool of people, yet, after mobile phone is widely used, it is found that mobile phone sometimes is not out of this world yet, such as, we are when driving, make a phone call if hold mobile phone on the other hand, another manual operating steering wheel, two hands are done two things simultaneously, bad support is held, have traffic accident easily, and also such as, we were when office work in the past, may get used to a hand and hold the mobile phone electric connection words, the another hand takes pen that the content record of conversation is got off, yet many companies have all realized office automation, when answering the call, be not that dialog context is recorded on the paper, but directly by keyboard input computer, handling keyboard need refer to ten, two hands are all handy, if a hand is taken phone, and another manual operating keyboard is very inconvenient, in a word, we are when answering the call, sometimes two hands are not idle, and therefore, people wish to have a kind of communication device, when making a phone call, do not need to hold telephone set, just can finish and send words and talked about the interchange of realization information with hand.

The purpose of this utility model is to solve the prior art problem, and a kind of radio telephone adapter is provided, and during use is to hang on the ear or be worn on the head, need not hand, can be easily and the mobile phone coupling, make people when making a phone call, both hands still can be operated normally, have improved operating efficiency.

The purpose of this utility model is achieved in that

A kind of radio telephone adapter is made up of main frame and handset two parts, and main frame is loaded in the earphone, and handset is connected with mobile phone; It is characterized in that: host circuit be by in the earphone receiving circuit, earpiece audio amplifying circuit, microphone audio amplifying circuit, microphone coding circuit, microphone modulation circuit, microphone power amplification circuit, the microphone radiating circuit is formed; The handset circuit is by handset receiving circuit, handset audio amplifier circuit, and handset decoding circuit, handset control circuit, handset modulation circuit, handset power amplification circuit, handset radiating circuit are formed;

Described earphone receiving circuit is made of integrated circuit (IC) chip U1 and peripheral resistance, appearance, perceptual components and parts, and wherein the pin 11 of U1 is connected with antenna through capacitor C 11; The pin 12 of U1 is connected with antenna through capacitor C 12; The pin 12 of U1 also is connected with the pin 11 of U1 by inductance L 2, and the pin 1,10,13,15 of U1 is connected with the positive pole of battery B1 by capacitor C 6, C10, C9, C8 respectively; The pin 5 of U1 is connected with the positive pole of battery B1 by variable capacitance V1, capacitor C 4; Inductance L 1 is in parallel with the branch road of above-mentioned V1, C4; The pin 6 of U1 is connected with the pin 8 of U1 through capacitor C 2; The pin 8 of U1 also is connected with the pin 9 of U1 by capacitor C 1; Pin 14,16 earthing potentials of U1; The pin 4 of U1 is connected with the positive pole of battery B1;

Described earpiece audio amplifying circuit hinders, holds components and parts by triode Q and periphery and constitutes; Wherein: the base stage of triode Q is connected with the pin 2 of U1 by capacitor C 24; The base stage of Q also is connected on the contact between resistance R 13 and the R14; One end of resistance R 13 is connected with the positive pole of battery B1; Earthing potential behind the other end series resistance R14 of resistance R 13; The emitter of triode Q is through resistance R 15 earthing potentials; The collector electrode of Q is connected through the positive pole of resistance R 16 with battery B1; The collector electrode of Q also is connected with the positive pole of earphone S by capacitor C 26; The minus earth current potential of earphone S;

Described microphone audio amplifying circuit hinders, holds components and parts by triode N1 and periphery and constitutes; Wherein the base stage of triode N1 is connected with the anode of microphone M1 through capacitor C 22; The minus earth current potential of microphone M1; The collector electrode of triode N1 passes through resistance R 12, switch P 1, is connected with the positive pole of battery B1; The grounded emitter current potential of N1;

Described microphone coding circuit is made of triode Q3, N2, quartz crystal X1 and peripheral resistance, appearance components and parts; Wherein the base stage of triode Q3 is connected with the base stage of triode N2 by resistance R 17; The collector electrode of triode Q3 is connected with the positive pole of battery B1 through resistance R 18, switch P 1; The grounded emitter current potential of triode Q3; The base stage of triode Q3 also is connected with the collector electrode of triode N2 by capacitor C 27, quartz crystal X1; The grounded emitter current potential of triode N2; The collector electrode of N2 is connected with the positive pole of battery B1 through resistance R 19, switch P 1; The base stage of triode N2 also is connected with the collector electrode of Q3; The collector electrode of N2 also is connected with the base stage of triode Q2 by capacitor C 28, resistance R 9;

Described microphone modulation circuit is made up of triode Q2 and peripheral resistance, appearance, perceptual components and parts, and wherein the base stage of triode Q2 is connected with the collector electrode of triode N1 by resistance R 9, capacitor C 23; The collector electrode of Q2 is connected with the positive pole of battery B1 by inductance L 4, switch P 1; The emitter of Q2 is through resistance R 6 earthing potentials; Capacitor C 19 is connected between the collector and emitter of Q2;

Described microphone power amplification circuit is made of triode Q1 and peripheral resistance, appearance, perceptual components and parts; The base stage of Q1 is connected with the emitter of Q2 through capacitor C 17; The collector electrode of Q1 is connected with the positive pole of battery B1 through inductance L 3, switch P 1; The emitter of Q1 is through resistance R 3 earthing potentials;

Described microphone radiating circuit is made of capacitor C 14, C15 and antenna, and wherein capacitor C 14 1 ends are connected with the collector electrode of triode Q1; The other end is through capacitor C 15 earthing potentials, and antenna is connected on the contact between capacitor C 14 and the C15;

Described handset receiving circuit is made of integrated circuit (IC) chip U3 and peripheral resistance, appearance, perceptual components and parts; Wherein the pin 11 of U3 is connected with antenna through capacitor C 11 '; The pin 12 of U3 is connected with antenna through capacitor C 12 '; The pin 12 of U3 also is connected with the pin 11 of U3 by inductance L 2 '; The pin 1,10,13,15 of U3 is connected with the socket 1 of mobile phone base plate S1 by capacitor C 6 ', C10 ', C9 ', C8 ' respectively; The pin 5 of U3 is connected with the socket 1 of mobile phone base plate S1 by variable capacitance V1 ' capacitor C 4 '; Inductance L 1 ' is in parallel with the branch road of above-mentioned V1 ', C4 '; The pin 6 of U3 is connected with the pin 8 of U3 through capacitor C 2 '; The pin 8 of U3 also is connected with the pin 9 of U3 by capacitor C 1 '; The pin 4 of U3 is connected with the socket 1 of mobile phone base plate S1; Pin 14,16 earthing potentials of U3;

Described handset audio amplifier circuit hinders, holds components and parts by triode Q ' and periphery and constitutes; The base stage of triode Q ' is connected with the pin 2 of U3 by capacitor C 24 '; The base stage of Q ' is connected on the contact between resistance R 13 ' and the R14 '; One end of resistance R 13 ' is connected with the socket 1 of mobile phone base plate S1; Other end series resistance R14 ' the back earthing potential of R13 '; The emitter of Q ' is through resistance R 15 ' earthing potential; The collector electrode of Q ' is connected through the socket 1 of resistance R 16 ' with mobile phone base plate S1; The collector electrode of Q ' also passes through capacitor C 26 ' and is connected with the socket 2 of mobile phone base plate S1;

Described handset decoding circuit is made of triode Q3 ', Q4 ', quartz crystal X1 ' and peripheral resistance, appearance components and parts; Wherein the base stage of crystal Q3 ' is connected with the pin 2 of U3 through capacitor C 22 '; The collector electrode of Q3 ' is connected with the socket 1 of S1 through resistance R 11 '; The grounded emitter current potential of Q3 '; The collector electrode of Q3 ' also passes through resistance R 12 ', quartz crystal X1 ' is connected with the base stage of Q4 '; The grounded emitter current potential of Q4 '; The collector electrode of Q4 ' is connected with the socket 1 of S1 through resistance R 17 ', R18 '; The anode of diode D2 is connected on the contact between resistance R 17 ' and the R18 ', and the negative electrode of D2 is also by capacitor C 23 ' earthing potential;

Described handset control circuit is made of integrated circuit (IC) chip U2; The pin 1 of U2 is connected with the socket 1 of mobile phone base plate S1; The pin 2,3 of U2 is connected with the socket 3,4 of mobile phone base plate S1 respectively; The pin 4 of U2 is unsettled; The pin 5 of U2 is connected with the negative electrode of diode D2; Pin 8 earthing potentials of U2;

Described handset modulation circuit is made of triode Q2 ' and peripheral resistance, appearance, perceptual components and parts; Wherein the base stage of triode Q2 ' is connected with the socket 5 of mobile phone base plate S1 by resistance R 9 '; The collector electrode of Q2 ' is connected with the socket 1 of mobile phone base plate S1 by inductance L 4 '; The emitter of Q2 ' is through resistance R 6 ' earthing potential; Capacitor C 19 ' is connected between the collector and emitter of Q2 ';

Described handset power amplification circuit is made of triode Q1 ' and peripheral resistance, appearance, perceptual components and parts; Wherein the base stage of Q1 ' is connected with the emitter of Q2 ' by capacitor C 17 '; The collector electrode of Q1 ' is connected with the socket 1 of mobile phone base plate S1 through inductance L 3 '; The emitter of Q1 ' is through resistance R 3 ' earthing potential;

Described handset radiating circuit is made of capacitor C 14 ', C15 ' and antenna, and wherein an end of capacitor C 14 ' is connected with the collector electrode of triode Q1 '; The other end of capacitor C 14 ' is through capacitor C 15 ' earthing potential; Antenna is connected on the contact between capacitor C 14 ' and the C15 '.

The model of described integrated circuit (IC) chip U1, U3 is TDA7088T, and the model of U2 is 12C509.

The utility model has following actively useful effect;

Radio telephone adapter of the present utility model is to be made of main frame and handset two parts; Main frame is loaded on earphone inside, handset is loaded in the mobile phone, be provided with radiating circuit in the main frame, can be transmitted to handset behind the acoustic coding of speaking with the people, handset inside is provided with decoding circuit, decoded audio signal can be sent to the microphone on the mobile phone, launched by mobile phone, also be provided with radiating circuit in the handset, the other side's that mobile phone can be received the sound of speaking is transmitted to main frame, and also be provided with receiving circuit in the main frame, give earphone after signal that can will receive amplifies, thereby realize the function of making a phone call and answering the call, make people when making a phone call or answer the call by earphone, both hands can be operated normally, have improved operating efficiency.

Now be described in further detail as follows in conjunction with the accompanying drawings with preferred embodiment:

Fig. 1 is a user mode schematic diagram of the present utility model;

Fig. 2 is a schematic block circuit diagram of the present utility model;

Fig. 3 is the schematic diagram of host circuit among Fig. 2;

Fig. 4 is the schematic diagram of Fig. 2 neutron machine circuit;

See also Fig. 1, radio telephone transducer of the present utility model is made up of main frame and handset two parts, and main frame is installed in the earphone cover 1, is connected with microphone 2 on the main frame.Handset is connected with mobile phone; Not shown in the figures.

See also Fig. 2, host circuit is made up of earphone receiving circuit, earpiece audio amplifying circuit, microphone audio amplifying circuit, microphone coding circuit, microphone modulation circuit, microphone power amplification circuit, microphone radiating circuit.The handset circuit is made up of handset receiving circuit, handset audio amplifier circuit, handset decoding circuit, handset control circuit, handset modulation circuit, handset power amplification circuit, handset radiating circuit.

See also Fig. 3, the earphone receiving circuit is by integrated circuit (IC) chip U1 and peripheral resistance, hold, the perception components and parts constitute, U1 model in the present embodiment is TDA7088T, TDA7088T is a kind of modulation receiving integrate circuit that PHILIPS Co. produces, its inside is provided with voltage controlled oscillator, demodulator, frequency mixer, amplitude limiter, frequency locked loop, filtering loop, squelch circuit, tuning circuit, its pin function is: pin 1 is a squelch circuit external capacitor end, pin 2 is the radio signal output, pin 3 is an Audio Loop path filter external capacitor end, pin 4 is the 3V voltage input end, and pin 5 is an oscillating circuit outward element end, and pin 6 is the intermediate-freuqncy signal feedback end, pin 7 is an internal amplifier external capacitor end, pin 8 is the output of intermediate-freuqncy signal, and pin 9 is inner limiting amplifier signal input end of intermediate frequency, pin 10 be the intermediate frequency limiting amplifier the external power supply end, pin 11,12 all is the radio signal input, and pin 13 is the building-out capacitor external connection end of internal limiter; Pin 14 is an earth terminal, and pin 15 is the external capacitor end of inner tuning circuit; Pin 16 is the output of internal electron tuner, and the earpiece audio amplifying circuit is made of triode Q and peripheral resistance, container piece; Wherein resistance R 13, R14 constitute the biasing circuit of Q, and the audio signal after triode Q amplifies directly promotes earphone S pronunciation.

The microphone audio amplifying circuit is made of triode N1, resistance R 11 is the biasing resistor of N1, through the audio signal after the microphone amplification is not the power amplification circuit of directly giving, in the utility model, also be provided with coding circuit, coding circuit is by triode Q3, N2 and quartz crystal X1 and capacitor C 23, C28 constitutes together, Q3, N2 is connected into multivibrator, the frequency of oscillation of this oscillator is controlled by crystal X1, when the natural frequency of the frequency of oscillation of oscillator and X1 is consistent, the impedance minimum of oscillator, it is the strongest to vibrate, resonance had both taken place, therefore, the output frequency of oscillator is exactly the natural frequency of X1, so when having only natural frequency as the natural frequency of the crystal X1 ' in the handset decoding circuit and X1 consistent, handset could receive the signal of main frame emission, both realized coding, improved the anti-interference of circuit, the high-frequency oscillation signal of triode N2 collector electrode output is coupled through capacitor C 28 and sends into the base stage of Q2, also sends into the Q2 base stage from the audio signal of N1 collector electrode output through capacitor C 23 couplings; Audio signal and high-frequency signal are finished modulation in triode Q2, signal after the modulation is sent into the base stage of triode Q1 through capacitor C 17 couplings by the emitter output of Q2, carry out power amplification by triode Q1, the high-frequency modulation signal after the amplification is launched by antenna through capacitor C 14 again.

See also Fig. 4, the handset receiving circuit is made up of integrated circuit (IC) chip U3 and peripheral resistance, appearance, perceptual components and parts; The model of U3 also is TDA7088T, and the connection of U3 is identical with the connection of U1, so the principle with above-mentioned earphone receiving circuit of handset receiving circuit is identical; The handset audio amplifier circuit hinders, holds components and parts by triode Q ' and periphery and constitutes; The handset modulation circuit hinders, holds components and parts by triode Q2 ' and periphery and constitutes, the handset power amplification circuit hinders, holds components and parts by triode Q1 ' and periphery and constitutes, the handset radiating circuit is made of with antenna capacitor C 14 ', C15 ', comparison diagram 3 and Fig. 4 are as can be known, the handset audio amplifier circuit is identical with the principle of above-mentioned earpiece audio amplifying circuit, the handset power amplification circuit is identical with the principle of above-mentioned microphone power amplification circuit, and the handset radiating circuit is identical with the principle of above-mentioned microphone radiating circuit.

The interface that is connected of handset and mobile phone is that socket by mobile phone base plate S1 carries out, the socket 1 of mobile phone base plate S1 is the anodal external tapping of cellular phone power supplies, socket 2 is the external tapping of embedded in mobile phone microphone, socket 3,4 is the audio signal logic switch, socket 3 is that high level is effective, and socket 4 is that low level is effective, when socket 3 is a high level, when socket 4 is low level, can pass through socket 2 input audio signal in mobile phone.Socket 5 is the external tapping of mobile phone internal loudspeaker circuit, and socket 6 is the external tapping of cellular phone power supplies negative pole.

The handset decoding circuit is made of triode Q3 ', Q4 ' and quartz crystal X1 '.Giving triode Q ' from the signal one tunnel of 2 pin of U3 output carries out audio frequency and amplifies, one the tunnel send Q3 ', Q4 ' decodes, X1 ' and the R12 formation series resonant tank that is in series, when the natural frequency of X1 is identical in the microphone coding circuit among the natural frequency of having only X1 ' and Fig. 3, resonant tank could produce resonance, triode Q4 ' ability output signal, promptly finished decoding, the signal of telecommunication of Q4 ' output is after diode D2 filtering, give 5 pin of U2, the signal of the 5 pin input of the corresponding output of 2 pin of U2 U2, the signal of the 4 pin input of the 3 pin output U2 of U2, because of the 4 pin no signals of U2, so the 3 pin output low levels of U2, the signal of telecommunication of the 3 pin output of U2 is given the socket 4 of S1; The signal of the 2 pin output of U2 send the socket 3 with S1, by above narration as can be known, when the natural frequency of crystal X1 in the microphone coding circuit is identical with the natural frequency of crystal X1 ' in the handset decoding circuit, socket 3 is a high level, socket 4 is a low level, at this moment triode Q ' can be in socket 2 input audio signal.The socket 5 of S1 is the external tapping of mobile phone internal loudspeaker circuit, receive the other side's phone when mobile phone after, the speech processing module of mobile phone inside is given triode Q2 ' with the other side's the voice signal and the high-frequency carrier signal of mobile phone internal oscillator generation by socket 5 outputs, after Q2 ' modulation, give Q1 ' and carry out power amplification, send by antenna at last and give the earphone receiving circuit.

As seen from the above description, the radio signal of the technical solution of the utility model by earphone and microphone and mobile phone is connected; Realized the function of making a phone call and answering the call by earphone by microphone, because of earphone hangs on the ear, microphone links to each other with earphone, microphone and earphone need not handed, when therefore making a phone call or answering the call, both hands can be operated normally, have improved operating efficiency.

Claims (2)

1. a radio telephone adapter is made up of main frame and handset two parts, and main frame is loaded in the earphone, and handset is connected with mobile phone; It is characterized in that: host circuit be by in the earphone receiving circuit, earpiece audio amplifying circuit, microphone audio amplifying circuit, microphone coding circuit, microphone modulation circuit, microphone power amplification circuit, the microphone radiating circuit is formed; The handset circuit is by handset receiving circuit, handset audio amplifier circuit, and handset decoding circuit, handset control circuit, handset modulation circuit, handset power amplification circuit, handset radiating circuit are formed;

Described earphone receiving circuit is made of integrated circuit (IC) chip U1 and peripheral resistance, appearance, perceptual components and parts, and wherein the pin 11 of U1 is connected with antenna through capacitor C 11; The pin 12 of U1 is connected with antenna through capacitor C 12; The pin 12 of U1 also is connected with the pin 11 of U1 by inductance L 2, and the pin 1,10,13,15 of U1 is connected with the positive pole of battery B1 by capacitor C 6, C10, C9, C8 respectively; The pin 5 of U1 is connected with the positive pole of battery B1 by variable capacitance V1, capacitor C 4; Inductance L 1 is in parallel with the branch road of above-mentioned V1, C4; The pin 6 of U1 is connected with the pin 8 of U1 through capacitor C 2; The pin 8 of U1 also is connected with the pin 9 of U1 by capacitor C 1; Pin 14,16 earthing potentials of U1; The pin 4 of U1 is connected with the positive pole of battery B1;

Described earpiece audio amplifying circuit hinders, holds components and parts by triode Q and periphery and constitutes; Wherein: the base stage of triode Q is connected with the pin 2 of U1 by capacitor C 24; The base stage of Q also is connected on the contact between resistance R 13 and the R14; One end of resistance R 13 is connected with the positive pole of battery B1; Earthing potential behind the other end series resistance R14 of resistance R 13; The emitter of triode Q is through resistance R 15 earthing potentials; The collector electrode of Q is connected through the positive pole of resistance R 16 with battery B1; The collector electrode of Q also is connected with the positive pole of earphone S by capacitor C 26; The minus earth current potential of earphone S;

Described microphone audio amplifying circuit hinders, holds components and parts by triode N1 and periphery and constitutes; Wherein the base stage of triode N1 is connected with the anode of microphone M1 through capacitor C 22; The minus earth current potential of microphone M1; The collector electrode of triode N1 passes through resistance R 12, switch P 1, is connected with the positive pole of battery B1; The grounded emitter current potential of N1;

Described microphone coding circuit is made of triode Q3, N2, quartz crystal X1 and peripheral resistance, appearance components and parts; Wherein the base stage of triode Q3 is connected with the base stage of triode N2 by resistance R 17; The collector electrode of triode Q3 is connected with the positive pole of battery B1 through resistance R 18, switch P 1; The grounded emitter current potential of triode Q3; The base stage of triode Q3 also is connected with the collector electrode of triode N2 by capacitor C 27, quartz crystal X1; The grounded emitter current potential of triode N2; The collector electrode of N2 is connected with the positive pole of battery B1 through resistance R 19, switch P 1; The base stage of triode N2 also is connected with the collector electrode of Q3; The collector electrode of N2 also is connected with the base stage of triode Q2 by capacitor C 28, resistance R 9;

Described microphone modulation circuit is made up of triode Q2 and peripheral resistance, appearance, perceptual components and parts, and wherein the base stage of triode Q2 is connected with the collector electrode of triode N1 by resistance R 9, capacitor C 23; The collector electrode of Q2 is connected with the positive pole of battery B1 by inductance L 4, switch P 1; The emitter of Q2 is through resistance R 6 earthing potentials; Capacitor C 19 is connected between the collector and emitter of Q2;

Described microphone power amplification circuit is made of triode Q1 and peripheral resistance, appearance, perceptual components and parts; The base stage of Q1 is connected with the emitter of Q2 through capacitor C 17; The collector electrode of Q1 is connected with the positive pole of battery B1 through inductance L 3, switch P 1; The emitter of Q1 is through resistance R 3 earthing potentials;

Described microphone radiating circuit is made of capacitor C 14, C15 and antenna, and wherein capacitor C 14 1 ends are connected with the collector electrode of triode Q1; The other end is through capacitor C 15 earthing potentials, and antenna is connected on the contact between capacitor C 14 and the C15;

Described handset receiving circuit is made of integrated circuit (IC) chip U3 and peripheral resistance, appearance, perceptual components and parts; Wherein the pin 11 of U3 is connected with antenna through capacitor C 11 '; The pin 12 of U3 is connected with antenna through capacitor C 12 '; The pin 12 of U3 also is connected with the pin 11 of U3 by inductance L 2 '; The pin 1,10,13,15 of U3 is connected with the socket 1 of mobile phone base plate S1 by capacitor C 6 ', C10 ', C9 ', C8 ' respectively; The pin 5 of U3 is connected with the socket 1 of mobile phone base plate S1 by variable capacitance V1 ' capacitor C 4 '; Inductance L 1 ' is in parallel with the branch road of above-mentioned V1 ', C4 '; The pin 6 of U3 is connected with the pin 8 of U3 through capacitor C 2 '; The pin 8 of U3 also is connected with the pin 9 of U3 by capacitor C 1 '; The pin 4 of U3 is connected with the socket 1 of mobile phone base plate S1; Pin 14,16 earthing potentials of U3;

Described handset audio amplifier circuit hinders, holds components and parts by triode Q ' and periphery and constitutes; The base stage of triode Q ' is connected with the pin 2 of U3 by capacitor C 24 '; The base stage of Q ' is connected on the contact between resistance R 13 ' and the R14 '; One end of resistance R 13 ' is connected with the socket 1 of mobile phone base plate S1; Other end series resistance R14 ' the back earthing potential of R13 '; The emitter of Q ' is through resistance R 15 ' earthing potential; The collector electrode of Q ' is connected through the socket 1 of resistance R 16 ' with mobile phone base plate S1; The collector electrode of Q ' also passes through capacitor C 26 ' and is connected with the socket 2 of mobile phone base plate S1;

Described handset decoding circuit is made of triode Q3 ', Q4 ', quartz crystal X1 ' and peripheral resistance, appearance components and parts; Wherein the base stage of crystal Q3 ' is connected with the pin 2 of U3 through capacitor C 22 '; The collector electrode of Q3 ' is connected with the socket 1 of S1 through resistance R 11 '; The grounded emitter current potential of Q3 '; The collector electrode of Q3 ' also passes through resistance R 12 ', quartz crystal X1 ' is connected with the base stage of Q4 '; The grounded emitter current potential of Q4 '; The collector electrode of Q4 ' is connected with the socket 1 of S1 through resistance R 17 ', R18 '; The anode of diode D2 is connected on the contact between resistance R 17 ' and the R18 ', and the negative electrode of D2 is also by capacitor C 23 ' earthing potential;

Described handset control circuit is made of integrated circuit (IC) chip U2; The pin 1 of U2 is connected with the socket 1 of mobile phone base plate S1; The pin 2,3 of U2 is connected with the socket 3,4 of mobile phone base plate S1 respectively; The pin 4 of U2 is unsettled; The pin 5 of U2 is connected with the negative electrode of diode D2; Pin 8 earthing potentials of U2;

Described handset modulation circuit is made of triode Q2 ' and peripheral resistance, appearance, perceptual components and parts; Wherein the base stage of triode Q2 ' is connected with the socket 5 of mobile phone base plate S1 by resistance R 9 '; The collector electrode of Q2 ' is connected with the socket 1 of mobile phone base plate S1 by inductance L 4 '; The emitter of Q2 ' is through resistance R 6 ' earthing potential; Capacitor C 19 ' is connected between the collector and emitter of Q2 ';

Described handset power amplification circuit is made of triode Q1 ' and peripheral resistance, appearance, perceptual components and parts; Wherein the base stage of Q1 ' is connected with the emitter of Q2 ' by capacitor C 17 '; The collector electrode of Q1 ' is connected with the socket 1 of mobile phone base plate S1 through inductance L 3 '; The emitter of Q1 ' is through resistance R 3 ' earthing potential;

Described handset radiating circuit is made of capacitor C 14 ', C15 ' and antenna, and wherein an end of capacitor C 14 ' is connected with the collector electrode of triode Q1 '; The other end of capacitor C 14 ' is through capacitor C 15 ' earthing potential; Antenna is connected on the contact between capacitor C 14 ' and the C15 '.

2. radio telephone adapter as claimed in claim 1 is characterized in that: the model of described integrated circuit (IC) chip U1, U3 is TDA7088T, and the model of U2 is 12C509.

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