TW406482B - Wireless transceiver - Google Patents

Abstract

A wireless transceiver is disclosed. The gain of the receiving section and the gain of the power amplifier of the transmitting section are adjusted in accordance with the field strength of the reception signals, so that the dynamic region of the receiving circuit can be expanded, and that the power loss at the strong electric field can be reduced, thereby making it possible to more efficiently utilize the battery power source. In accordance with the field strength of the reception signals, a low noise amplifying section bypasses the reception signals without an amplification at the strong field strength, while the low noise amplifying section amplifies the reception signals at the weak field strength. Further, the transceiver operates with the maximum gain at the weak field strength, and the gain is lowered at the strong field strength. Therefore, the power consumption can be lowered, thereby extending the life expectancy of the dry cell battery.

Description

____________ 40648 ^ b7_ V. Description of the Invention () Guiming Field __: The present invention relates to a wireless transceiver. In detail, the present invention relates to a wireless transceiver in which the gain of the receiving area and the gain of the power amplifier in the transmitting area are adjusted according to the field strength of the received signal, so that the dynamic area of the receiving circuit can be enlarged, and Power loss in a strong electric field can be reduced, thereby enabling more efficient use of battery power. BACKGROUND OF THE INVENTION Generally, a wireless transceiver converts signals or data into wireless signals for transmitting or receiving them, and the wireless transceiver is an essential part of wireless communication equipment, such as a wireless modem. As shown in the first circle, the wireless transceiver includes: a transmitting and receiving band-pass filter 1 connected to an antenna αντί for passing a receiving frequency and a transmitting frequency: a receiving area 10 for transmitting and receiving the transceiver band The output and reception signals of the pass filter 1 are processed into output reception data RX-D; and a transmission area 20 which processes the transmission data TX-D and outputs them as a wireless signal through the transceiver band-pass filter 1 and the antenna ATN1. . The receiving area 10 includes: a radio frequency (RF) band-pass filter 11 for passing RF signals through the transceiver band-pass filter 1; and a low-noise amplification area 12 for passing the band-passed RF The signal is amplified with low noise; a phase-locked loop is used to synchronize the phase of an oscillation frequency; a local oscillation region 14 is used to supply the phase-locked oscillation frequency of the phase-locked loop to a mixer 15; the mixing The amplifier 15 mixes the amplified RF signal with the oscillating signals to output them into an intermediate frequency; a page 4 of the paper, the degree of this W tw valve family standard (CNS) Λ4 specification (21〇7 : 97g t) t --- 111.1T--J ------- ^ (" Read the back of the ;; ± Issue, § then "! 'Qiaodonghu) 40648 ^ A7 B7 ν '• Γ λ Λ ϋ j; /: f η Description of the invention (IF amplifier 17 is used to amplify the intermediate frequency of the pass band; and a wave detector 18 is used to detect the amplified intermediate frequency to become the output receiver Data RX-D. The transmission area 20 includes: a phase-locked loop 21 for synchronizing the phase of a vibrating disk frequency; an oscillation and strip change area 22 for generating the lock The phase frequency of the phase loop 21 and _ are used to tune the oscillating frequency to the transmission data TX-D; and a power amplification area 23 is used to amplify the RF modulation signals of the transmission data TX-D to output them To the transceiver band-pass filter 1. In the conventional wireless transceiver constructed as described above, the receiving area always amplifies the RF signal to a fixed level by means of a low noise amplifier, regardless of the electric field strength of the received signal. Therefore, in the case of a strong electric field strength, the strength of the received signal is too strong to provoke a saturation phenomenon and thus distort the signal. Therefore, a problem that the received signal is damaged is caused. Furthermore, the transmission Regardless of the change in the electric field strength of the received signal, the power amplification zone of the zone has an output transmission signal with a fixed output level. For example, suppose that a maximum output limit of 1W at a 1 OKm destination is output. The low power reachable area (within hundreds of meters) is generated, which is a disadvantage. Furthermore, if the conventional output method always outputs the maximum output level (1W) If this is the case, the dry battery's limit voltage is as high as 1.2V, so the dry battery energy can only be used 50% »Purpose of the invention and sincerity: The present invention is intended to overcome the shortcomings of the traditional technology described above. Page 5 Ten Years of the Prisoner's Family (CNS) Eighty-four Grid (210X297 Gongchu: —Order-^ --— Line ί-: ί Read the back of the matter first, then you can do it with skill)

A7 — 4M4M _ B7 V. Explanation of the invention () Therefore, an object of the present invention is to provide a wireless transceiver in which a received signal with a weak electric field strength is amplified to a set gain according to the electric field strength of the received signal and a strong electric field. The strength of the receiving signal is bypassed without being amplified ', thereby allowing the dynamic area of the receiver to be enlarged. Another object of the present invention is to provide a wireless transceiver in which the transmission area is based on the electric field strength of the received signal. The gain of the power amplification region is adjusted so that unnecessary power loss in a strong electric field strength can be reduced, thereby improving the use efficiency of the dry cell. Still another object of the present invention is to provide a wireless transceiver in which 'based on the electric field strength of the received signal, only the received signal with a weak electric field strength is amplified' and the received signal with a strong electric field strength is bypassed without being amplified. This allows the dynamic area of the receiver to be enlarged, and the gain of the power amplification area of the transmission area is adjusted so that unnecessary power loss in a strong electric field strength can be reduced, thereby improving the efficiency of the use of dry batteries. In order to achieve the above-mentioned object, the wireless transceiver according to the present invention includes: a transmitting-receiving band-pass filter connected to an antenna for band-passing reception and transmission signals; and a transmission area for transmitting data. RF modulation and used to amplify them to a set gain to output them to the transceiver band-pass filter: a receiving area containing a low-noise amplifier for amplifying or bypassing the RF receiving signal, A frequency inverter is used to mix the output signal of the low noise amplifier and the oscillation signal to convert them to the middle page 6 " ^ K " Note on the back again " 3 " lean) H--111 -I--1. I 1 -I--n order > Γ · 1 wooden paper ruler is called national palm (CN'S> Λ4 gauge brand u) .ϊν: · " 中 * 、 m 5 ; / 1 Yuhe M. ^ 406482 A7 -----------------! Z_____ V. Description of the invention () ~~ Frequency signal 'An intermediate frequency amplifier is used to convert the frequency The output signal of the filter is filtered and amplified 'and a wave detector is used to detect the output signal of the intermediate frequency amplifier as an output Receive data; a reference voltage generation area for generating a reference voltage with a set reference level 'for lack of a reception sensitivity; a comparison area' for output of a wave detector in the reception area The received signal is changed. The signal symbol symbol RSSI level is compared with the reference level in the reference voltage generation area to determine the strength of the received signal. If it is weaker than the reference level, the electric field is changed. The strength is judged to be a weak electric field strength 'and if it is stronger than the reference level, the electric field strength is judged to be a strong electric field strength, whereby according to the judgment result of this comparison area, the low noise amplifier will be in a weak electric field The received signal under the strength is amplified, and the received signal under the strong electric field strength is bypassed without being amplified. In another aspect of the present invention, a wireless transceiver according to the present invention includes: a transmitting and receiving band-pass filter connected to an antenna, which is used for band passing the received and transmitted signals; a receiving area It includes a low-noise amplifier to amplify or bypass the RF receiving signal, a frequency converter to mix the output signal of the low-noise amplifier and the oscillating signal to convert them to intermediate frequency signals, a The intermediate frequency amplifier is used to filter and amplify the output signal of the frequency inverter, and a wave detector is used to detect the output signal of the intermediate frequency amplifier to become the output receiving data;-the reference voltage generating area is used to generate a A set reference position on page 7 wood and paper music scale iiU; 屮 Gang Sentence 卒 standard mark ((, NS) Λ4 specifications (210X29, public 犮) " " Read the precautions on the back again!

, 1T A7 ____ 5. Description of the invention () The standard reference voltage is used to distinguish a receiving sensitivity; a comparison area is used to receive the output signal of the wave detector in the receiving area. The received signal strength symbolizes the signal RSSI. The level is compared with the reference level in the reference voltage generation area to determine the electric field strength of the received signal, and if it is weaker than the reference level, the electric field strength is judged to be a weak electric field strength 'and if it is When the reference level is strong, the electric field strength is judged to be a strong electric field strength; a negative voltage generating area is used to generate different negative voltages according to the judgment result of the comparison area; and a transmission area including a power amplifier For receiving the negative voltage output of the negative voltage generating region and amplifying them to a low gain when they encounter a strong electric field strength, and amplifying them to a high gain when they encounter a weak electric field strength, and The transmitted data is converted into RF signals and used to amplify them and output them to the transceiver band-pass filter. In still another aspect of the present invention, a wireless transceiver according to the present invention includes: a transmitting and receiving band-pass filter connected to an antenna, which is used for band passing the received and transmitted signals; a The receiving area contains a low-noise amplifier to amplify or bypass the RF reception signal. A frequency converter is used to mix the output signal of the low-noise amplifier and the vibration signal to convert them to intermediate frequencies. Signal, an intermediate frequency amplifier is used to filter and amplify the output signal of the frequency inverter 'and a wave detector is used to detect the output signal of the intermediate frequency amplifier and become the output receiving data; ____ ___ 8T___ 4 feet ||, but ['NS) A4_At grid (2 丨 〇 public square) -------1----1 1-1-IIII— —-1 1— f 1 I—-- -I-Γ I-. (Reciprocal " read the back of the matter and then M · '·-~ Ί order} A7 _______ B7 five-a 7 ^ ° ^---- ~ a reference voltage generation area, Used to generate a reference voltage with a set reference level to distinguish a receiving sensitivity; a comparison , Used to compare the received signal strength of the wave detector in the receiving area with the received signal strength symbol level of the signal RSSI and the reference level of the reference voltage generation area to determine the electric field strength of the received signal, and if it is more than When the reference level is weak, the electric field strength is judged to be a weak electric field strength 'and if it is stronger than the reference level, the electric field strength is judged to be a strong electric field strength; a negative voltage generating region is used to Different negative voltages are generated according to the judgment results of the comparison area: and a transmission area 'which includes a power amplifier for receiving the negative voltages of the negative voltage generation area in rotation and amplifies them when it encounters a strong electric field strength A low gain, and amplify to a high gain when it encounters a weak electric field strength, and used to convert the transmitted data into RF signals and used to amplify them and output them to the transceiver band-pass filter, by According to the judgment result of the comparison area, the low-noise amplifier will amplify the received signal under the weak electric field strength, and bypass the received signal under the strong electric field strength ' The drawings are not simply enlarged. The above-mentioned objects and other advantages of the present invention will become more apparent after a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings, in which: the first The picture is a block diagram 'which shows the structure of a traditional wireless transceiver; ___--------QS- This paper music scale violation; tl' 丨 'Intranet 孓 丨 i ((' NS) A4i! {. fS · () ^ I, 11 --- ^-1 ^! I {Neighbors " Notes on the back of the reading again " '· ν-ν * νΗ} 406482 A7 --------- ------------ B7 V. Description of the invention () Figure 2 is 10,000 yuan, which shows the structure of the wireless transceiver according to the present invention; Figure 3a is not shown in Figure 2 Fig. 3b shows another embodiment of the low noise amplification area; Fig. 3b shows the details of the general structure of the power amplifier of Fig. 2; Fig. 5a schematically An example of a conventional transmission output control method is shown; Section 5b (a) schematically shows a transmission wheel-out control method according to the present invention; and Circle 6 is a circle table showing the change in dry cell voltage versus duration. Circle number comparison instructions: (Notes on the back of Gong 1 reading again, price · '? This page

" · "; · Minimum fA = ^ T " 卬 V 1 Receiving bandpass filter ΑΝΙ [Antenna 100 Receiving area 200 Transmission area 300 Comparing / judging area 400 Negative voltage generating area 11 Radio frequency (RF) bandpass Filter 32 Low Noise Amplification Area 13 Phase Locked Loop (PLL) 14 Local Oscillation Area 15 Mixer 16 IF Band Pass Filter 17 IF Amplification Area 18 Wave Detector 21 Phase Locked Loop 22 Oscillation and Modulation Area 23 Power Amplifier 30 Reference voltage generation area 31 Comparison area D1 Diode 321 Amplifier circuit area Q30 Amplifier transistor 33 Gate voltage adjustment area 50 Drive amplifier 53 Power amplifier iI—Order page 10 Paper size; CW (CW; Λ4 !! 格 grid (2l0.x_29) Ke Yan Department X · '-^ " ^-^ π 1-; 71' Ruhezhu ^ Seal-, Γ __________________406482 5. Description of the invention () Details of the invention Note: In all the drawings, elements with the same function and structure will be assigned the same reference numerals. The second _ is a square circle showing the structure of the wireless transceiver according to the present invention. Referring to FIG. 2, according to the present invention, The wireless transceiver includes: one connected to one antenna AN The transmitting and receiving band-pass filter 1 of Ti is used for bandpassing receiving and transmitting signals; a receiving area 100 is used to receive the receiving signal from the transmitting-receiving bandpass filter 1 and become the result of filtering, amplification and wave detection. Output the received data RX-D, and according to the result of a comparison / judgment area 300, bypass the received signal without amplifying it when encountering a strong electric field strength; a transmission area 200 is used for radio frequency (RF) modulation and amplification transmission The data TX-D is used to output them to the transceiver band-pass filter 1 and change the gain of the power amplifier according to the electric field strength of the received signal; the comparison / judgment area 300 will be detected to receive the received signal of the 100 And comparing a reference level with a reference level to determine whether it has a strong electric field strength or a weak electric field strength, and output a result; and a negative voltage generation area is used to judge the result of the comparison / judgment area 300 Generate different negative voltages.

The receiving area 100 includes: an RF band-pass filter 11 for passing the RF signal of the transmitting-receiving band-pass filter 1; and a low-noise amplification area 32 for amplifying or bypassing the band-passed RT signal with low noise. A phase-locked loop (PLL) 1 3 is used to phase synchronize an oscillating frequency; a local oscillator area 14 is used to supply the phase-synchronized oscillator frequency of the PLL 13 to a mixer 15 which 15 Mix the amplified rf signal and Zhenfeng signal together and output them as an intermediate frequency; IF Page 11 This paper scale Tongchuan 屮 B1 prisoner's excellent standard (CNS) Λ4 present grid (2U) X2V7 (Public trend) Note on the back of the jujube item (H)), 1T ^ 浐 部 屮 m is eliminated; Μ · t · s-— 406482 B7 _ ________________ · | _ 丨 _ ____ Fatty said > ^ ΓΓ.—) The amplifying region 17 is used to amplify the band-passed meridian frequency; and a wave top detector 18 is used to detect the amplified intermediate frequency to become the output connector RX-D. The transmission area 200 includes: a PLL21 for phase synchronization of the oscillation frequency; an oscillation and modulation area 22 for oscillation of the phase-synchronized frequency of the PLL21 and modulation of the oscillation frequency into transmission data TX-D; and a power amplifier 23 for amplifying the RF-modulated signals of the transmission data TX-D and outputting them to the transceiver band-pass chirper 1. The comparison / judgment area 300 includes: a reference voltage generation area 30 for setting a reference voltage Vref to distinguish the strength of the electric field; and a comparison area 31 for representing the reference voltage Vref of the reference voltage generator 30 to receive signals. The intensity of the electric field corresponding to the received signal of the wave detection area 18 is compared for level, and is used to output a logic signal (high or low level voltage). The negative voltage generating area 400 includes: a reverse INT to reverse the phase of the output signal of the comparison area 31; a diode D1 which is turned on or off according to the output of the inverter INT; and a gate voltage The adjustment region 33 is used to supply the divided negative voltage to the gate of the power amplification region 23 as the gate voltage VG. The negative voltages are determined by the output voltage VD0 of the diode D1 or by a voltage according to the diode. The body D1 is turned on / off and is formed by a set negative power supply voltage Vneg. The output voltage VD1 of the comparison area 31 is supplied to the low noise amplification area 32 of the receiving area to control the amplification operation of the low noise amplification area 32 and the connection / disconnection operation of the bypass path. _________ Article 12Ί " 仏 Inverse Yuanchuan Xuan "Standard (rNS) in the present case (： 丨 (U2W 公 筇) — " --- ^-I hi --------- IT——1 —.1—f (Please read # '& Precautions 4 fill out V * poor) A7 B7 ------------ 406482 ------- 5. Description of the invention ( Figure 3 shows the details of the embodiment of the low-noise amplification region 32 in the second circle β. The low-noise amplification region 32 in Figure 3a includes: an amplifier circuit region 321 including a plurality of passive devices R31 'LI, C3 1 and C33 and an amplifier transistor Q30 are used to receive the output voltage VD1 of the comparison area 31 as a bias voltage to amplify them and supply them to a mixer 15; and a signal passes through the circuit area 3 22 which includes a plurality of Capacitor € 3 2 and 034 and resistor 113 3 and 113 5 and a switching diode D2 'whose cathode receives the output voltage VD1 of the comparison area 31 receives the inverted signal of the output signal of the comparison area 31 through the resistor R32 and its anode / VD1 'is used to form a bypass circuit between the RF band-pass filter 11 and the mixer 15. Another embodiment of the low noise region 32 in Fig. 3b includes: an amplifier circuit region 321 and Includes multiple capacitors And resistors C31, C33, C3 5, R31, R33 and R37 and a large transistor Q30 are used to receive certain levels of bias voltage VCC into its collector through a coil L1 to use the RF bandpass filter An output signal of 11 is supplied to the mixer 15; and a signal passes through the circuit area 3 22 which includes a plurality of capacitors C32 and C34 and resistors R33 and R35 and a switching diode D2, and a cathode thereof is connected to the resistor via a resistor R30 The bias voltage VCC of the amplified transistor Q30 is also connected to an emitter of the amplified transistor Q30 via a resistor R36, and its anode receives the output voltage VD1 of the comparison area 31 via a resistor R3 4 for A bypass circuit is formed between the RF band-pass filter 11 and the mixer 15. Fig. 4 shows a general structure of the power amplification region 23 for receiving a gate voltage VG from a gate voltage adjustment region 33. F1 and F2 _________ page 13_ This paper describes K in this paper; 丨! 孓 榡 prisoner jujube (c, NS) Λ4 present case (210X29 · ^^) II n .I-l · —-I-ti I —. II 丁 艺 1 ο -.— i-t, Cen (翎 first read the precautions on the back and then "3 pages) A7 ----------- 40S4S2 ~~ --- 5 Description of the invention (.) The two-stage amplifier of the field effect transistor's gain will vary with the gate voltage vG. This power amplification area is not different from ordinary amplifiers, so its description will be omitted * As above The operation of the wireless transceiver of the present invention constructed as described will now be explained. Referring to laps 2 and 3, the RF signal inputted through the antenna ATNI is only a signal whose frequency is selected is allowed to pass through the RF band-pass filter 11 and is supplied to the low noise amplification region 32. Then, the signals are either amplified by the low-noise amplification area 32 or are bypassed and directly supplied to the mixer 15 without being amplified. At the same time, when the local oscillating area 14 synchronizes the phase, When the oscillating frequency is supplied from the PLL 13 to the mixer 15, the mixer 15 mixes the oscillating frequency with the RF signal to output an intermediate frequency signal. The intermediate frequency signals pass through the IF band-pass filter 16 and are amplified by the IF area 17 and are measured by the wave detection area 18 before being output as the reception signal RX-D. Furthermore, the wave detection The output signal strength of the measurement area 18 symbolizes the RSSI signal, which indicates the electric field strength of the received signal. The beta signal RSSI is represented by different level voltages according to the electric field strength of the received signal. This is shown in Table 1 below. Table 1

Signal strength. 3 OdBm -40dBm -50dBm -60dBm RSSI 2.5V 2.4V 2.1 1.8V This paper κ 度 崎 (cns') " a4 ^ () (" Read " Notes on the back are filled in again_ 人 • (Page)-Order 406482 ^ V. Description of the invention (-) As shown in Table 1 above, the strength of the received signal symbol 881 is proportional to the electric field strength of the received signal. The comparison area 31 compares the received signal strength symbol signal RSSI with a preset reference voltage Vref of the reference voltage generation area 30 to output a high-level voltage (such as 3V) or a low-level voltage (such as OV). If the reference voltage Vref is set to + 2.3V (which is within the range of the signal RSSI), then the comparison area 31 outputs a low level voltage OV. If the signal RSSI is + 2.IV or + 1.8V (weak electric field strength region), the comparison area 31 outputs a high level signal of 3V. Therefore, the operation of the low noise amplifying area 32 and the power amplifying area 23 will be different according to the judgment result of the comparison / judgment area 300, that is, different as the electric field strength is strong or weak. First, the low-noise amplification region 32 will be described in detail. It will not be amplified when the comparison area 31 outputs 0V (when the electric field strength is strong). Instead, a bypass path is formed between the RF bandpass filter and the mixer 15 'so that the detection signal of the RF bandpass filter 11 can be supplied to the mixer 15 without being amplified. On the other hand, when the comparison area 31 outputs 3V (when the electric field strength is weak), the low noise amplifier 32 is activated before the output signal of the RF bandpass filter 11 is supplied to the mixer 15 To zoom in to a certain gain. The configuration of the low-noise amplification region 32 may vary depending on the bypass path or the control method of the amplifier. Their two categories are shown in sections 3a and 3b (ii), respectively. Refer to Figure 3a, 'When the comparison area is 0V in 31 rounds, the paper size of the magnified paper is 4 (CNS), \ 4 size (210 × + $ 7 male dance) — ~' '" Read the notes on the back first Be clever again ^ page

、 1T-". Neighbor 屮 4-, ipT: r ^ h-Ti7i Yuhezhu _______________406482 __ 5. Description of the invention () The collector value of the body Q3 0 becomes 0v, so the transistor has no effect, The switch diode D2 for receiving a reverse output value of the comparison area 31 is turned on because the anode potential is higher than the cathode potential by a certain value. Therefore, the rf signal from the RF band-pass filter 11 is supplied to the mixer 15 through the capacitor C32 ', the switching diode D2, and the capacitor C34. On the other hand, when the comparison area 31 outputs 3V, the amplifying transistor Q30 receives a certain voltage into its collector and opens the collector, and the switching diode D2 is switched off because the cathode potential is higher than the anode potential. shut down. Therefore, the output signal of the RF band-pass filter 11 is amplified by the amplifying transistor Q30 when it is supplied to the mixer 15. Referring to circle 3b, when the comparison area 31 outputs 0V, its inverted value / VD1 is supplied. To the anode of the diode D2, therefore, the switching diode D2 becomes conductive. Furthermore, via the diode D2 and the resistor D36, the amplifier transistor Q30 becomes an transistor having an emitter potential higher than the base potential, so the amplifier transistor is turned off. Therefore, the output signal of the RF band-pass filter 11 is supplied to the mixer 15 through the capacitor C32, the enemy diode D2, and the capacitor C34. On the other hand, when the comparison area 31 outputs 3V, the The potential of the anode of the switching diode D2 is lower than the potential of the cathode, so the diode D2 is turned off. Because the diode D2 is turned off, the emitter of the amplifying transistor Q30 is grounded via the resistors R36 and R33. Therefore, the transistor Q30 amplifies the output signal of the RF band-pass filter before it is sent to the mixer 15. As shown in Figs. 3a and 3b, the low-noise amplification region 32 bypasses the received signal without amplification in a strong field strength region. In this case ________ The 16th-permanent --- wooden Zhang scales Xiao Xiao 1¾ net family line: cold-(['NS Λ4.ίίί 格 (21 () > 297 enthalpy) {-' 'iN " Read " Notes on the back vet moth .:' ^ " page

-* 1T 406482 «; _ — —II < ^^« —-_ · — · · ^ π ~ M. .. — V. Description of the invention () Under the condition, the received signal was received during the passage of the diode. The attenuation is about 2dBm, but the received signal has a strong field strength, so its action is not attenuated during the operation of the mixer 15 and the wave detector 18. In a rough view, in the low noise amplification area 32 It seems possible that a separate switching device is not used. The power supply VCC of the amplifying transistor Q30 can be disconnected to bypass the received signal without amplification. However, in this case, the amplifying transistor Q3 0 causes attenuation of 40 dBm or more in the cutoff region, and therefore, the performance of the receiver is degraded. Therefore, in the present invention, a switching device with an appropriate attenuation rate is used to bypass signal number 9 at the same time, a strong field strength is higher than the reference level and a weak field strength is lower than the reference In the case of a level, the gain is controlled in a manner different from the low noise amplification region described above. This operation will be described with reference to FIGS. 4 to 6. In Fig. 2, the operation below is performed in the strong field strength where a low level voltage 0V is output from the comparison area 31. That is, the low level signal of the comparison area 31 is changed to a high level during the reverse INT passing through the negative voltage generating area 400. The high-level signal is sent to the gate voltage adjustment region 33 through the diode D1. The negative power supply voltage (Vneg = -5V), which is supplied as the gate voltage of the power amplification region 33 via the resistors R4 and R5, is adjusted by the gate voltage adjustment region via the resistor R3 during the turn-on period of the diode D1. 33 is divided into one VDO. Therefore, a certain level of negative voltage (for example, -IV) is supplied as the value extreme voltage VG of the power green amplification region 23. On the other hand, a high-level voltage of 3V is output in the comparison area 31 -------------- page 17 Specifications (210X29, Public Super League) ~~ '"' " Notes on the back of Mao's reading again " {" " Page order ^ # 部 d'i 、 ir * T ^ Γχ '',] ί- Τίνί # 合 Μ, ^ 406482 A7 ___B7 V. Description of the invention () In the weak field strength, the high-level quasi-signal of the comparison area 31 is inverted and used to supply the bipolar body D1. Therefore, the 'diode D1 is blocked, so the variable resistor R3 is short-circuited in the gate voltage adjustment region 33. Therefore, unlike the case of strong electric field strength, a different level of negative voltage (Vneg = -5V) is supplied through the resistors R4 and R5 as the gate and voltage VG of the power amplification region 23 »as shown in the fourth circle The power amplification region 23 includes a FET device. Therefore, its gain is changed according to the adjusted gate voltage of the gate voltage adjustment region 33. That is, in a weak field strength, if a negative voltage of -5V is supplied as the gate voltage from the gate voltage adjustment region 33, the power amplification region 23 of the fourth lap is operated in the running range Amplify the transmitted signal to a certain gain (30dBm). In this case, the transmission signal is transmitted at a power of about 1W. On the other hand, in a strong field strength 'if a negative voltage (· IV) higher than in a weak electric field strength is supplied', the power region 23 operates in the active range to transmit the signal It is transmitted with a gain (such as 20 dBm) which is lower in weak field strength. In this case, the 'transmission signal is transmitted at a power of about 200 inW. If the transmission signal is transmitted at a power of about 200mW, it can reach 100 meters as described above. In the above-mentioned wireless transceiver of the present invention, the resistance value of the variable resistor R3 of the 'that pole voltage adjustment region 33 is adjusted to adjust the gate voltage Vg. Through the adjustment of the gate voltage, the gains of the power amplification regions 23 are adjusted so that the transmission signals can be appropriately transmitted to their destinations. Therefore, in a region where a weak output can be used, the level of the transmission signal) ----- --- ----------------------------------------------------------------I n II i-I n! (Wood page) 406482 a? B7 V. Description of the invention () is reduced 'so that unnecessary power loss can be reduced, and the power of the dry battery can be saved. The current consumption of a wireless transceiver and its output level are shown in Table 2 below, where the voltage is 4V. Table 2

200mW 300mW 500mW 800mW 1 W Efficiency 68% 64% 60% 54% 52% Current Consumption 73.5mA 117mA 208mA 370mA 480mA As shown in Table 2 above, the current consumption at 200mW transmission output is 73.5mA. In contrast, the current consumption at the time of transmission output of iw is 480mA. Therefore, the difference in current consumption is considerable. In detail, when the output level becomes higher, the efficiency of the power green amplification region 32 is reduced, and as a result, more current is consumed. Therefore, the energy consumption which accounts for most of the total energy consumption by reducing the output level can be significantly saved, and the efficiency can be improved. ίνθ viv-.Ah.Ti / i and 合 合 竹 卬 y (please read the precautions on the back before ^ lf-f) Of course 'traditionally this power amplification area has a gain control, but as shown in Figure 5a Yes, this is a transmission signal that is made as a gain control in the input range of the power amplifier 53 where the power amplifier 53 is preceded by a drive amplifier 50. Therefore, in this conventional device, the power amplifier 53 itself is operated at a fixed gain within the saturation range at any time, with the result that the characteristics are attenuated. However, in the power amplifier of the present invention as shown in Fig. 5b 囷, the page 19 of this paper is printed on the paper, and the standard is 1 邋 ㈤ 4 ^ (210XI197 Gong, 406482 A7 B7 Η γ 1 h). f λ; 卬 5. Description of the invention (The function of the driver is kept unchanged. The gate calendar VG of the power amplifier 53 is adjusted according to the field strength of the received signal to adjust the gain of the power amplifier 53 itself. Therefore, The power amplifier operates according to the gate voltage VG, instead of operating in the saturation range, it is operating in the active range. Therefore, the attenuation of the operating characteristics of the power amplifier 53 can be prevented. Usually, The source is a dry battery, and the dry battery has a high internal resistance. Therefore, as shown in Figure 6, the power supply voltage decreases as an exponential function with continuous use. Furthermore, if the transmission signal is 1W power If it is transmitted, the limit of the use voltage of the dry battery is 1.2V. If the transmission signal is transmitted at 200Mw, the limit of the voltage is used. 1 〇ν β Far more than 1W of conventional transceivers transmit only 50% of the power supply can be used. However, in the present invention, if the transceiver is used in a strong field strength, the use of the power supply The rate can be 90%. According to the present invention as described above, the low-noise amplification area bypasses the received signal in a strong field strength and does not amplify it according to the field strength of the received signal, but the low noise The amplification area will amplify the received signal at a weak field strength. Therefore, the receiving range can be expanded. Furthermore, 'the receiver operates with the maximum gain in weak field strength' and at a strong field strength Zhongyi benefit is reduced. Therefore, the energy consumption can be saved. Furthermore, reducing the energy consumption can extend the life expectancy of dry batteries "page 20 of this paper, A-scale Sugawa River internal idle treatment year ((., NS 1 Λ4 ^ (210: χ. 2 () 7 pairs) Read a pair of precautions on the back before in'iv · "this page" Order A7 406482 B7 V. Description of the invention () Furthermore, the efficiency of the use of dry batteries can be In the above, the present invention is based on a specific figure To explain, but it should be understood by those skilled in the art that different changes and modifications can be achieved without departing from the scope defined by the scope of patent applications below. Page 21 ;!] Inner family (CNS) grid (210X2W) m —1 I-i .----I —--n 1 --- j- ......--1 ^ 1 T «------ ϋ < — · _ ii * '· 1 ·· ii,-幺, (read the precautions on the back of the page again, then" ", heart page)

Claims (1)

V3 6 09 406482 A8 B8 C8 D8 Patent application scope 1. A wireless transceiver, which at least includes: a transmitting and receiving band-pass filter connected to an antenna, which is used to band-pass the received and transmitted signals; a transmission area, It is used for radio frequency modulation of the transmitted data and for amplifying them to a set gain to output them to the transceiver bandpass canceller; a receiving area containing a low noise amplifier for receiving RF The signal is amplified or bypassed. A frequency inverter is used to mix the output signal of the low noise amplifier and the oscillation signal to convert them into an intermediate frequency signal. An intermediate frequency amplifier is used to output the frequency inverter signal. Filter and amplify, and a wave detector is used to detect the output signal of the intermediate frequency amplifier as output receiving data; a reference voltage generation area is used to generate a reference voltage with a set reference level, which is used to Do not receive sensitivity; Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the note on the back before filling in clothing I) The comparison area is used to compare the received signal strength of the wave detector in the reception area with the received signal strength symbol level of the signal RSSI and the reference level of the reference voltage generation area to determine the electric field strength of the received signal, and if When it is weaker than the reference level, the electric field strength is judged to be a weak electric field strength 'and if it is stronger than the reference level, the electric field strength is judged to be a strong electric field strength, so that based on this comparison zone As a result of the judgment, the low-noise amplifier will amplify the received signal under a weak electric field strength, and bypass the received signal under a strong electric field strength without amplifying it. Page 22 This paper size is applicable to China National Standard (CNS M4 specification (210X297 mm) A8 B8 C8 D8 406482 Patent application scope 2. Wireless transceiver as described in the first patent application scope 'Where the low noise The amplifying area includes at least: an amplifying circuit area including a plurality of passive devices and an amplifying transistor to receive the output electric calendar of the comparison area as partial dust to amplify them; and a machine number passing through the circuit area, which uses It is connected to the amplifier circuit area in parallel, and it includes multiple capacitors and resistors and a switching diode. The cathode of the diode receives the output voltage of the comparison area and receives the comparison through the resistor and the anode of the diode. The inverted signal of the output signal of the zone is used to form a bypass circuit between the RF band-pass filter and the mixer. 3. The wireless transceiver according to item 1 of the scope of patent application, wherein the low noise is amplified The area includes at least: an amplifying circuit area, which includes a plurality of capacitors and resistors and an amplifying transistor to receive a specific level of bias voltage into its collector, which is used to put the base receiving signal And a signal passing circuit area, which includes a plurality of capacitors and resistors for signal coupling, a switching diode, a cathode of which is connected to a bias voltage of the amplifying transistor, and an anode of which receives the output voltage of the comparison area Inverted signal, and a resistor used to connect the cathode of the switch diode to an emitter of the amplifier transistor, to turn off the amplifier transistor when the switch diode is turned on. Page 23 Zhang scale is applicable to China National Standard for Standards (CNS) A4 (210X297 mm) Please read the notes on the back first and then print it by the Shell Consumer Cooperative of the Central Ministry of Economic Affairs, printed by the Shell Worker Consumer Cooperative of the Ministry of Economic Affairs. A8 B8 ___ 406482 S VI. Patent Application Scope 4. A wireless transceiver, which includes at least: a transceiver band-pass filter connected to an antenna, which is used to pass-band the received and transmitted signals (band passing); a The receiving area includes a low-noise amplifier to amplify or bypass the RF reception signal, and a frequency inverter to use the low-noise amplifier output signal and vibration The signals are mixed together to convert them into intermediate frequency signals, an intermediate frequency amplifier is used to filter and amplify the output signal of the frequency inverter, and a wave detector is used to detect the output signal of the intermediate frequency amplifier as Output received data;-Reference voltage generation area, used to generate a reference voltage with a set reference level, to distinguish a receiving sensitivity; a comparison area, used to The received signal strength of the output receiving signal symbolizes the level of the RSSI signal and the reference level of the reference voltage generation area to determine the electric field strength of the received signal, and if it is weaker than the reference level, the electric field strength It is judged as a weak electric field strength, and if it is stronger than the reference level, the electric field strength is judged as a strong electric field strength; a negative voltage generating area is used to generate different negative voltages according to the judgment result of the comparison area. ; And a transmission area including a power amplifier for receiving a negative voltage output from the negative voltage generating area and encountering a strong electric field there To amplify them to a low gain, and to a high gain when they encounter a weak electric field strength, and to convert the transmitted data into RF signals and to amplify them and output them to the transceiver Band-pass filter. ________Page 24 · This paper size applies to Chinese national standards (CMS > A4 size (210X297 mm) (please read the precautions on the back before filling out this page) Order A8 B8 C8 D8 406482 Patent application scope 5. The wireless transceiver according to item 4 of the patent application group, wherein the negative sign generation area includes at least: 'inverter for inverting the output signal of the comparison area; a switching diode with an anode Receiving the output signal from the inverter; and a gate voltage adjustment area for adjusting the gate voltage of the power amplification area according to the on / off of the switch diode. The wireless transceiver of item 5, wherein the gate voltage adjustment region of the low noise amplification region includes at least: two resistors connected in series to supply a specific negative voltage to a gate of the power amplification region; and A variable resistor for connecting a contact point of the two resistors to a cathode of the switching diode of the negative voltage generating area. 7. A wireless transceiver including at least: a connection to an antenna Titi A filter for band-passing the received and transmitted signals; a receiving area containing a low-noise amplifier for amplifying or bypassing the RF reception signal, and a frequency converter for low-noise The output signal of the signal amplifier and the oscillating signal are mixed together to convert them into an intermediate frequency signal. An intermediate frequency amplifier is used to suppress and amplify the output signal of the frequency inverter, and a wave detector is used to detect the signal. The output signal of the intermediate frequency amplifier becomes the output receiving data; page 25 This paper size applies the Chinese national standard (CNS> A4 specification (210X297 mm) ir ------. —.It- (Please read the back (Please note this item and fill in this page again.) The central government bureau of the Ministry of Economic Affairs's consumer co-operatives printed the scope of patent application 8888 ABCD The central government bureau of the Ministry of Economic Affairs's sub-consumer cooperatives printed a reference voltage generation area to generate a reference with a set value. The level reference voltage is used to distinguish a receiving sensitivity; a comparison area is used to receive the received signal from the output signal of the wave detector in the receiving area. The level of the strength symbol signal RSSI is compared with the reference level of the reference voltage generation area to determine the electric field strength of the received signal, and if it is weaker than the reference level, the electric field strength is judged to be a weak electric field strength. And if it is stronger than the reference level, the electric field strength is judged as a strong electric field strength; a negative voltage generating area for generating different negative voltages according to the judgment result of the comparison area; and a transmitting area, which Includes a power amplifier to receive the negative voltage output of the negative voltage generating region and amplify them to a low gain when they encounter a strong electric field strength, and a high gain when they encounter a weak electric field strength And used to convert the transmitted data into RF signals and to amplify them and output them to the transceiver band-pass filter, so that according to the judgment result of the comparison area, the low-noise amplifier will be in a weak electric field. The received signal under the strength is amplified, and the received signal under the strong electric field strength is bypassed without being amplified. 8. The wireless transceiver according to item 7 of the patent application, wherein the low-noise amplifier area includes at least: an amplifier circuit area including a plurality of passive devices and an amplifier circuit for receiving the comparison area. The output voltage is used as a bias voltage to amplify them; and the Z paper size on page 26 applies to China-National "(⑽) M specifications (2; mm, please read St. I first.) Consumer cooperatives printed A8 po406482 g | VI. Patent application scope A signal passes through the circuit area, which is connected in parallel with the amplifier circuit area, and it contains multiple sensor containers and resistors, and a switch diode. The cathode of the body receives the output pressure of the wheel from the comparison zone, and receives the reverse signal of the output signal of the wheel from the comparison zone through the resistor and the anode of the dipole, which is used to form between the RF band-pass filter and the mixer. Bypass circuit. 9. The wireless transceiver as described in item 7 of the scope of patent application, wherein the low-noise amplifier area includes at least: an amplifier circuit area, which includes a plurality of capacitors and resistors, and an amplifier transistor for Receive a special The positioning bias voltage enters its collector 'to amplify the base signal; and a signal passes through the circuit area, which contains a plurality of capacitors and resistors for signal coupling, a switching diode, and the cathode is connected to the Amplify a bias voltage of the transistor and its anode receives the inverted signal of the output voltage of the comparison area, and a resistor for connecting the cathode of the switching diode to an emitter of the amplifier transistor for When the switching diode is turned on, the amplifying transistor is turned off. 10. The wireless transceiver as described in item 7 of the scope of patent application, wherein the negative voltage generating area includes at least: an inverter for The output signal is reversed; a switching bipolar skeleton whose anode receives the output signal from the inverter; and __ page 27 This paper is in accordance with China National Standard (CNS) standard (21 () > <; 297 public works) — (Please read “Notes on the back side before filling out this page”) 406432 ABCD patent application scope-Gate voltage adjustment area 'is used to adjust the power amplification according to the on / off of the switch diode The gate voltage of the zone. I. The wireless transceiver as described in claim 10 of the patent claim, wherein the gate voltage adjustment area of the low-noise amplification area includes at least: two resistors connected in series to supply a specific negative voltage to the power amplifier A gate in the region; and a variable resistor for connecting a contact of the two resistors to a cathode of the switching diode of the negative voltage generating region β (please read the precautions on the back first) (Fill in this page) III — ^ ϋ ^ fn n · Printed by the Shellfish Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs ml am i · ^ — m. —-It * n ^ i— I .TI. II— I —II- I ml m · I nmn page 28 This paper size is applicable to China National Standard (CNS) A4 (210X297 mm)