TW200522561A - Power control circuit by wireless transmission - Google Patents

Abstract

Disclosed is a power control circuit by wireless transmission, which can capture the transmission power of the transmitting unit through a coupling unit, the transmission power is then compared and operated using a comparing unit to determine if the current transmission power meets the requirement. Based on the value of the operation, the amplified power of the amplifying unit is then controlled so as to achieve the purpose of power control by wireless transmission.

Description

200522561 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention is a power control frame. The power control architecture can be applied to individuals', especially a kind of wireless transmission data. Wireless technology of personal assistants (PDAs)] In today's scientific development, great convenience, information processing devices have also been advanced. The advancement of technology has brought humans handheld information processing devices, and personal outdoor development Out of various types

Digital Assistant; PDA) is t Assistant (Personal Communication Personal Digital Assistant (PDA) combined = Representative. (Communication), consumer electrical brain (CommPuter, electronics) and other related technologies and = (Commonsumer Yes, there are calendars, computers, and electronic energy, one of which includes stock analysis, games, electronic t, reading ::, tribute database, trial balance,

Uia⑴, Browsing the Internet. 4:;: Sub-email χ, Power seeking, the new generation of personal digital assistants (PDAs) can also be used as mobile phones, multimedia, digital cameras, navigation systems (GPS) and other functions. But many of the above functions can only be achieved using wireless transmission technology (such as: sending emails, browsing the Internet, and even navigation systems ...). So most personal digital assistants (p DA) are usually equipped with The RF radio frequency component module (RadioFrequency Module) in the field of wireless communication completes the personal digital assistant (PD A) to interact and communicate with the outside world through wireless transmission. [Summary of the Invention]

V. Description of the invention (2) However, the transmission power of the conventional RF module, _ H. ^ X power, is mostly controlled by the current sensor (cwrent sensor), but the "RF module is-open circuit (Open loop) 'so it is not easy to detect the actual transmission power, so] it is easy to cause the required transmission power and the actual supplied transmission power to be infrequent or result in insufficient power transmission or excessive power transmission (0ver Γ 1 ve), which seriously affects wireless transmission In view of this, the present invention proposes a wireless transmission power control whose purpose is to effectively control the transmission power of the RF radio-frequency module, and thus the quality of the line transmission. ^ W, this is the wireless transmission disclosed in the present invention to achieve the above purpose. The control circuit consists of at least a coupling unit, a detection unit, a comparison unit, and a combination unit. The _combination unit is used for consumption-the handheld information processing hotline transmits the round signal and transmits it to a transmission unit. The detection unit couples people: It is used by the coupling unit to handle and transmit the round signal, and transmit the transmission signal to the output terminal. The comparison unit is connected to the detection unit. After the comparison unit is used to receive the transmission signal, it communicates with The transmitted signal is calculated and compared to generate a control signal to be transmitted to the output. The amplification unit and comparison & element ^ are used to receive the control signal and adjust the amplifier and return capacity of the control signal according to the control signal. The control unit should be placed early. The present invention is designed in the form of a closed loop (C 1 0 se 1 ο ο ρ), so whether the actual power transmitted by the debt can meet the requirements of the system. (Over drive) In a state of overdrive, the output signal of the amplifier unit can be changed in a timely manner to control the transmission power of the wireless transmission wheel within the range of system requirements. &Quot;, " Tested 200522561 V. Invention Description (3 ) [Embodiment] The fs Ming wireless transmission power control circuit is designed as a closed loop and is set in a handheld information processing device. This handheld information processing device can be a personal digital assistant (pDA) ... · Refer to "Figure 1" for the block diagram of the helmet line of the present invention in Λ, Xuan, and clothing. …,…, The power control system of the transmission wheel. The structure of the present invention includes a detection unit, an amplification unit 30, a light-on unit 4o, and a transmission unit: 〇〇, === Jiwu 10 and coupling unit 4 〇 Connected, the detection unit 10 is: I, measured early :: lose: "Tiger, and calculate this round signal :::.乂 Shan Fan 20, the transmission signal is applied to the V ratio r ^ signal 彳 4, then this transmission signal and -yuan 30, amplify the order, generate a control signal to the amplification unit to adjust the output power technology, after the signal, And according to the wireless transmission of the control signal, the wireless transmission gas y 1. After taking it, the handheld information processing device 40, the consumption unit Beier amplifies the power, and then transmits it to the coupling unit and then transmits it to the transmission: The signal of high-frequency and low-frequency signals can be added as an antenna element = 50 for wireless transmission, and this transmission unit 50 will then proceed in the Ming Yuan-step 2 "',', power control of soil wheel Single-line transmission power control in the circuit for testing and extracting ^ 丨 ^ Refer to "Figure 2", which is the second explanatory diagram of the present invention without the present invention .

Detector) and the group is early, and it is accounted for by a radio frequency detector (RF). The transmission signal of Baixiandang will be passed back from the coupling unit 40 to the detection unit 1G. Resistance element R1

Stomach 7 pages 200522561 V. Description of the invention (4) and the feedback circuit composed of Hong Fen Wu = C1, and then send it to the detection unit 10 测 bias test Zao Fan 1 _ After getting the transmission signal, then The transmission signal is transmitted to the electric valley 7 ° C 2 filter, and then fed to the car through the resistance element R 2 to tl 2 0 ', and the resistance element R3 and the resistance element R2 are more voltage circuits, which will partly transmit the signal. Feedback to the detection unit 丨 〇. g $ 了 $ The comparison unit 20 of the invention of the scholar is further explained in detail 'w Refer to "Fig. 3", which is an explanatory diagram of the comparison unit of wireless transmission power control of the present invention. After receiving the transmission signal, Ibi 2 0 compares the transmission signal with the transmission signal transmitted by the processing unit: 0. The comparison unit 2 is an operation comparator (0pc〇mparat〇r). ), And the processing unit is the central processing unit (Central) of the handheld information processing device.

Pucessmg Unit; CPU). This transmission signal is transmitted from the processing unit 60 through the two sets of RC circuits composed of the resistor element r 4, the capacitor element c 3 and the resistor element R 5, and the capacitor element C4 to the comparison unit 2. 〇, the transmission signal contains the central processing unit (CPU) required data value of the transmission power, and compared, the unit 20 compares the transmission signal and the transmission signal to calculate the actual transmission power and the processing unit 60 required The transmission power is the distance between the two, and then the calculation result is converted into a control signal and transmitted to the amplifying unit 30. Finally, a detailed description of the amplifying unit and the coupling unit of the present invention is shown below: "Moon tea according to Figure 4" is a connection diagram of the amplifying unit and the coupling unit of the wireless transmission wheel power control of the present invention. When the amplifying unit 30 receives the control signal, it controls it according to the control signal.

200522561 V. Description of Invention (5)

Control amplification power, this amplification unit 30 further includes: a control element 31, a low frequency amplification element 3 2 and a high frequency amplification element 3 3, and the low frequency amplification element 3 2 is used to amplify the low frequency signal to be transmitted by the handheld information processing device, The high-frequency amplifier element 3 3 is responsible for amplifying the high-frequency signals to be transmitted by the handheld information processing device, and the control element 3 1 is connected to the low-frequency amplifier element 3 2 and the high-frequency amplifier element 3 3 and controls according to the level of the control signal. The amplification power of the low-frequency amplifying element 32 and the high-frequency amplifying element 33 are controlled so that their output power can be controlled within the range required by the processing unit 60. The handheld information processing device meets the requirements of digital mobile bandwidth specifications. The signal part can be a signal that complies with the EGSM (900 MHz) frequency band, while the high-frequency signal part can be a signal that conforms to the DCS (1 800 MHz) and PCS (1 900 MHz) frequency bands. Send this high-frequency signal and low-frequency signal to the light closing unit 40 and combine the signals and send them to the output unit 50 for wireless transmission. In this way, the purpose of timely detecting the output state and improving the amplification power is achieved, and The low excessive power loss further improves the stability and quality of wireless transmission data.

Although the present invention is disclosed above with the foregoing preferred embodiments, it is not intended to limit the scope of implementation of the present invention. Any person skilled in similar arts may make equivalent changes and modifications without departing from the spirit of the present invention and the scope of patent application. All are covered by the patent scope of the present invention. Therefore, the patent protection scope of the present invention shall be determined by the scope of the patent application scope attached to this specification.

Page 9 200522561 Brief description of the diagram. Figure 1 is a block diagram of the wireless transmission power control system of the present invention. Figure 2 is an explanatory diagram of the detection unit of the wireless transmission power control of the present invention. Figure 3 is the wireless transmission power control of the present invention. An explanatory diagram of the comparison unit; and FIG. 4 is a connection diagram of the amplifying unit and the coupling unit of the wireless transmission power control of the present invention. Description of graphical symbols] 10 彳 测 测 measuring unit 20 comparison unit 3 0 amplifying unit 31 control element 3 2 low-frequency amplifying element 3 3 south frequency amplifying element 4 0 knitting unit 50 transmission unit 60 processing unit C Bu C 4 capacitive element R 1 ~ R 5 resistance element

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Claims (1)

200522561 6. Scope of patent application 1. A wireless transmission power control circuit, the power control circuit is arranged in a handheld lean signal processing device, and includes a coupling unit 'the coupling unit is used to consume the handheld The tribute processing device wirelessly transmits a signal to a transmission unit; a detection unit, the detection unit is connected to the coupling unit, and the detection unit is used for capturing a transmission signal by the coupling unit and transmitting the transmission signal The signal is transmitted to the output terminal after calculation. A comparison unit is connected to the measurement unit. The comparison unit is used to receive the transmission signal and calculate and compare it with a transmitted signal to generate a control signal to be transmitted to the output terminal. And an amplifying unit connected to the comparison unit, the amplifying unit is configured to receive the control signal and adjust the amplifying power according to the control signal. 2. The wireless transmission power control circuit according to item 1 of the scope of patent application, wherein the amplifying unit further comprises: a low frequency amplifying element, the low frequency amplifying element is used for receiving a low frequency signal, and after amplifying the power of the low frequency signal Transmitting to the coupling unit; a high-frequency amplifying element for receiving a high-frequency signal and transmitting the power to the coupling unit after amplifying the power of the high-frequency signal; and a control element for controlling The element is connected to the comparison unit. After receiving the control signal, the control element is used to adjust the low-frequency amplifier element and the high-frequency amplifier element according to the level of the control signal. Page 11 200522561 6. Scope of patent application 3. The wireless transmission power control circuit described in item 2 of the scope of patent application, wherein the low-frequency signal is a low-frequency signal that conforms to the EGSM digital mobile bandwidth specification. 4. The wireless transmission power control circuit as described in item 2 of the scope of patent application, wherein the high-frequency signal is a high-frequency signal that conforms to the DCS digital mobile bandwidth specification. 5. The wireless transmission power control circuit according to item 2 of the scope of patent application, wherein the high-frequency signal is a high-frequency signal that conforms to the PCS digital mobile bandwidth specification. 6. The wireless transmission power control circuit according to item 1 of the scope of the patent application, wherein the comparison unit is further composed of an OP comparator. 7. The wireless transmission power control circuit according to item 1 of the scope of patent application, wherein the transmission signal is a transmission signal transmitted by a central processing unit (CPU). 8. The wireless transmission power control circuit according to item 1 of the scope of patent application, wherein the detection unit is further composed of a radio frequency detector (RF Detector). 9. The wireless transmission power control circuit according to item 1 of the scope of patent application, wherein the transmission signal is a transmission signal returned by the coupling unit. 10. The wireless transmission power control circuit according to item 1 of the scope of patent application, wherein the transmission unit is an antenna element. Page 12