TWI280741B - Antenna diversity switch for dual mode co-existence system - Google Patents

Abstract

The present invention discloses an antenna diversity switch, used for receiving and transmitting RF signals of the WLAN and Bluetooth Co-existence system. The antenna diversity switch comprises a first transmitting port; a second transmitting port; a receiving port; a first control unit, electrically connected between the first transmitting port and a first antenna; a second control unit, electrically connected between the first transmitting port and a second antenna; a third control unit, electrically connected between the second transmitting port and the first antenna; a forth control unit, electrically connected between the second transmitting port and the second antenna; a fifth control unit, electrically connected between the receiving port and the first antenna; a sixth control unit, electrically connected between the receiving port and the second antenna. The antenna diversity switch according to the present invention reduces the required antenna number for the IEEE 802.11b/g WLAN and Bluetooth Co-existence system from more than three in the prior art to two in the present invention. Moreover, it provides antenna diversity for both WLAN and Bluetooth modes, where in the prior-art WLAN and Bluetooth coexist system the antenna diversity is only provided for WLAN mode but not for Bluetooth mode.

Description

1280741 发明, invention description: [Technical Field] The present invention relates to a single stone microwave integrated circuit (MMIC), which is particularly related to a double-pole triple-throw (DP3T) microwave switch, It can be used to say that the wireless communication system is transmitted to the house meter wave. [Prior Art] Since the 1990s, the combination of wireless communication technology and Internet technology has created "Wireless Internet". . The IEEE802.11 standard for wireless local area networks was proposed by the IEEE Standards Committee in 1997 and extended the 802.11a and 802.11b standards in 1999. IEEE802.11b uses the 2400_2483·5ΜΗζ band to provide 1 to 11 Mbps. IEEE 802.11a uses the 5150-5350 MHz and 5725-5825 MHz bands to provide 1 to 54 Mbps. IEEE 8 02 .llg has a higher transmission rate than IEEE 802.11b, and the data transmission speed can theoretically reach 54MB per second, and the security is better. This specification operates in the 2.4 GHz band and is compatible with IEEE 802.1 lb. ΪΕΕΕ The 802.1 5 wireless personal network working group proposed the Bluetooth system specification and derived IEEE802.15.4 in 2000. The operating frequencies of the two can operate in the 2400-2483.5 MHz band, providing close-range low power and low transmission. Wheel rate feature. If wireless communication products, such as laptops, PDAs, wireless zones, weekly roads, and Bluetooth dual systems, wireless Internet access and no-view cables are available. Figure 1 shows the traditional wireless local area network IEEE802.1 1b/g 成, dental co-existence system (WLAN and Bluetooth Co-existence Jiajing Book and manual 1280741

System) architecture diagram using 3 antennas (2 antennas for IEEE802.1 1b/g systems and one for Bluetooth systems) with a double pole double throw and a single pole double throw switch (one of the double The double throw of the knife is used for antenna diversity and transmission/reception switching of the IEEE 802.1 1b/g system, and the other single pole double throw switch is used for the switching of the transmission/reception of the Bluetooth system. In the above technique, only one antenna for the Bluetooth system does not have the function of antenna diversity. In addition, in the design of the RF switch, the architectures used are: (1) Adopting the transistor series-parallel method, this architecture is less able to meet the higher input and output power or better because of the transistor process relationship. Implant loss. (2) The l-C resonance mode is combined with the electric crystal operation switch to improve the linearity of the transceiver. The design concept of a conventional single-pole double-throw switch, as published by Tokimitsu et al. in Microwave and

Millimeter-Wave Monolithic Circuit Symposium, pp. 2-7-30, June 1993, "Low Voltage, High Power T/R Switch MMIC Using LC Resonators," , which discloses a low-steering voltage and high-power, low-distortion operation transmission/reception switch. The LC resonator switch consists of an inductor, a capacitor, and a field effect transistor (FET) switch, which is used for the transmitting end and the receiving end. And provide a reverse control in the transmission mode to eliminate the RF voltage mechanism. An LC resonator transmission/reception switch, when the control is 〇v/-2v, when the input power is greater than 28dBm, the third-order interaction is displayed. The variable signal is less than -40dB. Published by Tokvimitsu et al. in P-1022-TW-Invention patent application and manual-final 1280741

Microwave Theory an^ Techniques, IEEE

Transactions, Issue 43, 997 - 1003, May 1995, "A low-voltage, high-power T/R-switch MMIC using using an inductor-capacitor resonator LC resonators) "Discloses a transmit/receive switch with low steering voltage and high power and low distortion operation. The LC resonator switch consists of an inductor, a capacitor, and a field effect transistor switch that is used on the transmit and receive terminals and provides a reverse control in the transmit mode to eliminate the RF voltage. A 1.9 GHz LC resonator transmission/reception switch single crystal microwave integrated circuit with a control voltage of 0V/-2V, when the input power is greater than 3 1 dBm, and the third-order intermodulation signal is less than -40dB. The single crystal microwave integrated circuit takes up less than 2 x 2 mm2 and the transmit/receive switch will be implemented and upgraded to the 5 GHz Industrial Scientific Medical Band (ISM) and personal communication services. In addition, see U.S. Patent No. 5,990,580, issued to The Whitaker Corporation, entitled "Single-Pole Double-Throw Switching, which discloses an electronic single-pole double-throw switch. The electronic single-pole double-throw switch includes a series field effect transistor. Connected to a first circuit arm, and the first circuit arm is connected between the common cymbal and a first cymbal; a parallel field effect transistor is connected to a second circuit arm, and the second a circuit arm is connected between the common 埠 and a second 。. The parallel field effect transistor is designed to achieve a barrier, and the electronic length is designed to be 90 或 or 1/4 wavelength in a common 埠; a power supply provides a rising voltage to the P-1022-TW-Invention patent application 蝥 manual · final 1280741 The source terminal of the field transistor and the common terminal, which is used to provide a link to the common terminal and also the second 埠; a first control voltage to the inverted logic state is also a gate, the field effect transistor is operated in a depletion mode, the control voltage is a 〇V bias voltage, and the DC power is interrupted, which provides a common 埠 to theHowever, in the prior art, the single-pole double-throw switch could not achieve the multi-mode system control and the double-pole three-throw switch could not be achieved by using the LC resonator. ~〆一一一—.一:,..... In view of the above problems, it is desirable to provide an antenna diversity switch that can be applied to a dual mode system that overcomes the shortcomings of the prior art to provide for sharing in each system of the dual mode co-construction system, which is more use than prior art uses. The number of antennas is small, and both systems are provided with antenna diversity function. SUMMARY OF THE INVENTION The main object of the present invention is to provide an antenna diversity switch, as shown in FIG. 2, which can be used in a wireless communication dual mode system, and can be The invention is made in a single wafer to achieve the application of a single wafer system. Another object of the present invention is to provide a switch that enables both the Bluetooth and wireless local area network systems to function as antenna diversity. The present invention proposes an antenna diversity switch that handles a wireless local area network and a Bluetooth dual mode co-construction system (WLAN and Bluetooth Dual-Mode Co-existence S Signal receiving and transmitting work. As shown in FIG. 3, the antenna diversity switch includes a first transmitting end, which is a first radio frequency receiving P-1022-TW-invention patent application specification-final 1280741 The transmitting end provides a first input signal of the antenna diversity switch; a second transmitting end is a transmitting end of the second radio frequency transceiver and provides a second input signal of the antenna diversity switch, and a receiving end Is used to provide an output signal of the antenna diversity switch; a first control unit electrically connected between the first transmitting end and a first antenna; and a second control unit electrically connected Between the first transmitting end and a second antenna; a third control unit electrically connected between the second transmitting end and the first antenna, a fourth control unit, electrical a U5 control unit of the ground connection terminal and (4) two antennas, electrically connected between the receiving end and the first antenna; and a sixth control unit electrically connected to the receiving end and the second One of the antenna diversity switches of the antenna according to the present invention , _ The second radio frequency signal is a wireless LAN IEEE 8〇2 Shu pilot signal. s 叼 is very characteristic of one of the antenna diversity switches of the present invention, the first control unit, the second control unit, the third control unit =, ::: unit, the fifth control unit and the sixth Control list: ^ is the field effect transistor, the source and the drain are electrically connected to the device, and the gate is connected to the control voltage, and the second is turned on or off. Determining the characteristics of the antenna diversity switch of the first invention of the electric Japanese body, as the element, the second: the second control unit, the third control unit, the fourth control unit, and the fifth control unit The sixth control -10 - !28〇74i: the closed-end connection of the field effect transistor of the unit - the inductor is such as the overall isolation of the antenna diversity switch. According to one aspect of the antenna diversity switch of the present invention, the first antenna and the second antenna system are both diversity antennas of the wireless area network. & gums: According to the antenna diversity switch disclosed by the present invention, it can effectively ... in a dual mode system and reduce the number of diversity antennas required. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention are set forth in the <RTIgt; 1 is a structural diagram of a conventional dual mode co-construction system; FIG. 2 is a diagram showing a structure of a dual mode co-construction system according to an embodiment of the present invention; FIG. 3 is a circuit diagram showing a circuit according to a first embodiment of the present invention; ', knife set open - Fig. 4 shows the first and second control unit and the third control single core according to the first embodiment of the present invention: circuit diagram; the equivalent of the earlier image is shown in Fig. 5 In the first embodiment of the invention, the operation mode of the first embodiment is difficult, and the simulation of the loss and reflection loss of the communication terminal and the second transmission is performed; and the sixth figure shows According to the first mode of operation of the present invention, the simulation of the isolation between the antennas of the first and second antennas is performed. P-1022-TW- Invention patent application specification-fina, -11 - Figure 7 Display the operation mode of the root switch - January: the simulation of the antenna diversity of the application example, the end of the simulation, the end of the figure, and the eighth picture of the second transmission + M. According to the operation of the invention Mode—> Λ Λ 贯 〜 之 之 之 之 天线 天线 天线 天线 ^ 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该Implantation Loss and Reflection Loss Off Figure 9 shows the antenna diversity of the antenna/division of the operation mode of the third embodiment of the present invention, the implant loss and the anti-end and the second overlap. The simulation diagram of the 10th loss of the end; Fig. 4 shows the antenna diversity diagram of the operation mode 2 and the = _ consistent example according to the present invention, and the simulation of the isolation between the early elements is shown in Fig. 11 Operation mode - Antenna diversity virtual map of the first embodiment; Figure 1 2 of the 1 dB gain compression point of Fig. 2 shows a simulation diagram of antenna diversity according to an embodiment of the operation mode of the present switch; The ldB gain compression point map of the input unit shows a simulation diagram of the implant loss and reflection loss of the receiving end of the mode 4 according to the antenna diversity I of the first embodiment of the present invention; FIG. 4 is not according to the present invention. A simulation diagram of the isolation between the units of the operation mode 4 of the antenna diversity switch of the first embodiment; βς^1 5 shows an antenna diversity according to the first embodiment of the present invention. 1022 TW• invention patent application Instructions - final -12 - 12807 41 operation mode four of the receiving end of the ldB gain compression point [schematic component symbol description] 100 antenna diversity switch 111 first transmission end 121 first antenna 130 receiving end 142 second control unit 144 fourth control unit 1 4 6 sixth control unit 200 equivalent circuit diagram 11 2 second transmission end 122 second antenna 141 first control unit 143 third control unit 145 fifth control unit 210 resistance 22 〇 capacitance 230 inductance [embodiment] form The embodiments of the present invention are not limited to the drawings and/or described, although the invention may be embodied in different ways and illustrated in the following. It is to be understood that the examples disclosed herein are not intended to be used in the particular embodiments. Figure 2 is a diagram showing an embodiment of the present invention, which uses two antennas, (also: the architecture of the IEEE802.Ub/g system and the Bluetooth antenna can be used for transmission), with the file according to the present invention"接收5唬Receiving and transmitting According to the present invention, the first solid knives and three-throw switches are integrated by controlling all the single antenna knives and sets of switches to achieve the transmission open circuit and transmit P-丨022-TW-invention patent application. Book and manual-final -13 - 1280741 state; its; for manipulating the dual-mode system and reducing the RF module 'product. Now § &quot; test Figure 3' shows the antenna diversity of the embodiment „ 1〇〇之Circuit structure diagram. The second line is a set open 1 &quot;〇〇, which includes a first transmitting end &quot;ι; a first m; a second transmitting end 112; a receiving end 13 two-day first - control single core 41, electrically connected Between the first transmitting end (1) and the first antenna 121; a second control 142' is electrically connected between the first transmitting end iu and the first antenna 122; The control unit 143 is electrically connected between the second transmitting end 112 and the first antenna m; a fourth control unit 144' electrically connects the iron at the second transmitting end ιΐ2 and the second antenna A fifth control unit 145 is electrically connected between the receiving end 130 and the first antenna 121; a sixth control unit 146 is electrically connected to the receiving end 13 and the The second antenna is between 1 2 2 . The first antenna 121 and the second antenna 122 may be any form of antenna, but are preferably diversity antennas. In general, the action of the diversity antenna can be divided into Predictive Diversity and pure automatic selection. The Predictive Diversity or Antenna-Diversity uses two antennas in different directions to 'control and automatically switch to select the stronger side of the received signal'. Therefore, the signal is always strong. One side. Pure automatic signal receiving (TRUE-DIVERSITY) or dual tuner automatic signal receiving is the use of two sets of identical characteristics of the receiving module, each connected to Pl〇22-TW-invention patent application and manual _fjna| -14 - 1280741 to the antenna comparator and switch circuit at different positions, the edge 0, the base frequency signal is respectively connected to the fast ratio to select the output baseband signal, the first transmitting end lu and the second transmitting end 112 are referred to The transmitting end of the RF transceiver. As shown in FIG. 3, a first radio frequency signal from the first radio frequency transceiver in the dual mode system can be selectively transmitted from the first antenna 121 through the first control unit 141 via the first transmitting end 111. Or through the second control unit ^ 142 is transmitted by the 6 Haidi antenna 122. Similarly, a second radio frequency signal from the second radio frequency transceiver in the dual mode system can be selectively transmitted from the first antenna 121 through the second control unit 143 via the second transmitting end 112, or The fourth control unit 144 is transmitted through the second antenna 122. The first RF signal and the second RF signal are signals that are processed by the RF transceiver system, that is, the signals of the baseband signal processed by the intermediate frequency signal and the RF mode. The first RF signal and the second RF signal may be microwave signals of different frequencies, such as an Advanced Mobile Phone System (AMPS) or a Code Division Multiple Access (CDMA) system from the US. ), Wideband Code Division Multiple Access (WCDMA), Global System for Mobile Communications (GSM), Global Positioning System (GPS), Personal Handyphone System (Personal) Handyphone System,PHS),Industrial,Science,P-1022-TW-Invention Patent Application and Manual-final -15 - 1280741 Medical scientiHc apd medical (ISM), Wireless Local Area Networks (WLAN) ) or Bluetooth system. In the present invention, however, the first radio frequency signal is preferably a radio frequency network IEEE802.1 1 b/g standard ton signal, and the second radio frequency signal is preferably a radio frequency signal of a Bluetooth system. Similarly, the receiving end 1 3 0 refers to the receiving end of the radio frequency transceiver. As shown in FIG. 3, the first radio frequency signal from the first antenna 121 reaches the receiving end 13 through the fifth control unit 145, and then enters the radio frequency transceiver for subsequent processing. Similarly, the second antenna is received. The second radio frequency signal of 1 22 reaches the receiving end 1 30 through the sixth control unit i 46 and enters the radio frequency transceiver to perform a subsequent power divider (not shown in the figure). After being connected to the receiving end 13Θ, the radio frequency signal from the receiving knowledge 130 is used for power allocation to enter a subsequent plurality of radio frequency front end processing. 忒 The first control unit i 4丨, the second control unit i U The third unit 143, the fourth control unit 144, the fifth unit 145 and the sixth control unit 丨46 are all transistors, preferably a field-effect transistor, and the source thereof The drain is electrically connected to the / and other components, and the gate is connected to the control voltage to determine the opening or closing of the transistor. The transistor can be formed by the following types of bi-carrier transistors (BJT), heterojunction Double-carrier transistor τ) 'high electron shift Rate transistor (HEMT), pseudotype high electron mobility transistor (PHEMT), complementary metal oxide semiconducting field effect pl〇22-TW-invention patent application and specification-final -16 - 1280741 in operation mode: Only stay in mode - ^ JXL, state ... Hai first: the communication system is simultaneously transmitting the signal of the billing order: ° two # system order * 141 is open, the second: :::: (4) is off state, the first The third control ... 43 is the five control unit 145 4 open state, the third A is closed state and the sixth control unit 1 46 signal to the first day = special ... &quot; transmission - the first radio frequency, 'winter, bundle 21 and the second transmitting end 12 12 will pass the message to the second antenna 122, which is mainly related to the fourth control unit. In the aspect, the first control unit 141 is off due to the first antenna 121 and the second antenna 122 nr:: the second control unit 142 is in an open state, and the third control unit is early 70 143. In the on state, the fourth control unit A 144 is in the off state, and the fifth control unit 145 and the sixth control; _ "6 does not need to change the state", that is, remains in the off state, then the 2 transmitting end m transmits a The first RF signal is sent to the second antenna and the fourth transmission 4 &quot; 2 (four) to send a second RF to the first antenna 121. It should be noted that the above two switch control methods are all closed Two different or identical RF signals are respectively transmitted via two: 'Therefore the entire antenna diversity switch 1 〇〇 is transmitted; is not overlapping. t Figure 5 shows the antenna diversity according to the embodiment of the present invention P-1022 - TW · invention patent application and manual _final -18- 1280741 』 mode - the first - transmission end! &quot; and the second transmission spear implant simulation loss and reflection loss simulation. Figure 6 shows y According to the first embodiment of the present invention, the first mode of operation of the antenna diversity switch Isolation simulation between the transmitting end 111 and each of the second transmitting end 112. FIG. 17 is a diagram showing the operation of the antenna diversity switch according to the present invention - the first = (1) and the second transmission. End 112 "Β gain I reduction point ^ map. The simulation results in Figure 5 show that the implant loss from the i to 4 GHz 4 input single turn to the transfer unit is less than m dB. The input unit has a reflection loss greater than 4 〇 dB, and the transmission has a reflection loss greater than 35 dB. The simulation result in FIG. 6 shows that the isolation between the first transmitting end 111 and the second transmitting end 112 is greater than 38 dB from 4 GHz, and the isolation between the first transmitting end lu and the receiving end 130 is greater than 38 dB. The isolation between the second transmitting end m and the receiving end 130 is greater than 38 dB. The seventh quasi-simulation shows that the input compression unit has a gain compression point of 34.5 dBm from 1 to 4. In operation mode 2: Operation mode 2 refers to the working state of a system receiving signals and another system transmitting signals. 0 when the first control unit 141 is in an open state, the second control is early: 142 is a closed state, the third control unit 143 is in a closed state, the fourth control unit 144 is in a closed state, and the fifth control unit is 145 is in the off state and the sixth control unit 丨46 is in the on state, then the first transmitting end 1U will be modified according to the first radio frequency signal two P-1022-TW · invention patent application " -19 - 1280741 The first antenna 1 2 1 122 enters and receives the second RF signal, and transmits the second RF antenna to the receiving end 1 3 0 to make the first machine. 'Because the one green 1 Ο 1 ^ 〆 is the diversity antenna from the antenna 121 and the second antenna 122, when the first batch of W is controlled by the younger brother, the early TO 14 1 is closed, and the second control is 丨J is 1 / 1 1 4 - ? The system is early 70 142 is the open state, the third control is early το 1 4 3 is closed, the closed state L is the fourth control unit 丨 44 is closed, the first Five control orders &amp; 145 are on and the sixth

Controlling the early 146 to be in the off state, the first transmission #i&quot; will be transmitted via the second antenna 122 according to the first radio frequency signal, and the radio frequency signal is transmitted to the receiving end 130. So that the second radio frequency signal enters the transceiver.

It should be noted that the above two open and close control modes are that the first transmitting end 111 transmits the first radio frequency signal via a diversity antenna, and the other diversity antenna transmits the second radio frequency signal to the receiving. End 130 is such that the second radio frequency signal enters the transceiver. Since the signal is in and out, the entire antenna diversity switch 1 is in a state of strong interface. In operation mode three: Since the antenna diversity switch 100 is a symmetric structure, the operation principle and operation mode 2 of the operation mode three are similar. When the first control unit 141 is in the off state, the second control unit 142 is in the off state, the third control unit 143 is in the closed state, the fourth control unit 144 is in the on state, and the fifth = unit 1 45 In the open state and the sixth control unit two P-1022-TW-invention patent application and manual _fina| -20 - 1280741 closed state, the first antenna 121 transmits the first radio frequency signal to the receiving end 1 30 such that the first radio frequency signal enters the transceiver, and on the other hand, the second transmitting end 112 transmits the second radio frequency signal via the second antenna 122. On the other hand, due to the antenna 121 and the second The antenna 122 is a diversity antenna, so when the first control unit 141 is in a closed state, the second control unit 142 is in a closed state, the third control is early 7L 143 is in an open state, and the fourth control unit 144 is closed. The second control f &amp; 145 $ off state and the sixth control unit 146 is in an open state 'the second antenna 122 transmits a first radio frequency signal to the receiving end 13 〇 so that the first radio number enters : transceiver 'on the other hand the second Send #ιι2将第: The RF# is transmitted through the first antenna i 2丨. It is necessary that the above two switch control methods are the second Dazhi 112 transmitting the second RF signal via a diversity antenna. And f: another diversity antenna transmits the first radio frequency signal to == such that the second radio frequency signal enters the transceiver 2. Therefore, the entire antenna diversity switch 100 is also in a state of strong interface. The switch control mode is the state in which the receiving end is working. The figure 8 shows the simulation of the loss and reflection loss of the actual target example according to the operation mode of the antenna diversity switch in this case, Γ, :? The operation of the antenna diversity switch modulates the first transmission end 1 1 1 and the embarrassing-difficulty, and, the fourth, the first transmission end 112, the implantation loss and the reflection γ -21 - 1280741. Figure 10 shows a simulation diagram of the 1:2 of the operation mode of the root line diversity switch. The first &quot; diagram shows the acceptance of the operation mode of the line diversity switch according to the present invention; Compressed point simulation map. 1 增 增 μ 夕The diagram of the dB gain compression point of the operation mode 3 of the antenna blade set switch according to the first embodiment of the present invention is shown in Fig. 1. Input the simulation picture of the early frame. The simulation result is shown in Fig. 8. Dry, from 1 to 4 GHz, the ancient acrobatic technology. Each mountain S Hehe", Beibei received the 130 to the transmission unit, the input consumption is less than 0.67dB. Cardamom pile you, her

MdB, 兮, ,,, 〇 反射 钿 钿 钿 反射 130 reflection loss is greater than 乂 迗 迗 early reflection reflection loss greater than 23dB. The 9th 圊掇 County results show that from! To the 4GHz towel to enter ... brother: map verification

Urtz's input is as early as the transmission to a small implant loss of 76.76dB. The input unit has a reflection loss of more than 40 dB, and the transmission unit has a reflection loss of more than 35. The first simulation result shows that the isolation between the first transmitting end (1) and the first transmitting end (1) is greater than _38.7 dB from between 1 and 4 GHz, and between the first transmitting end 111 and the receiving end 13? The isolation is greater than 38.7 dB, and the isolation between the second transmitting end 112 and the receiving end 13〇 is greater than 38.8 dB. The second simulation results show that the 1 dB gain compression point of the receiver 130 is 35 dBm from i to 4 GHz, and the 1 dB gain compression point of the input unit is 35 dBm. The simulation results in Fig. 12 show that the 1 dB gain compression point of the receiver 130 is 35 dBm from 1 to 4 、, and the 1 dB gain compression point of the input unit is 35 dBm. In operation mode 4: Operation mode 4 is the state in which the receiving end is working. At this time, the P-1022-TW-invention patent application and manual ·fj -22 - 1280741 operate as the first control list a 141 In the off state, the second control unit 142 is in the off state, the third control unit &amp; 143 is in the off state, and the fourth control unit 144 is in the off state. It should be noted that the fifth control list & (4) and the sixth control list; &quot;6 switch state depends on the reception of the first antenna ΐ2ι (4) the next day. If the first and second radio frequency signals are received by the input antenna 1 2 1 and transmitted to the receiving end 1 300, the fifth control unit “5 is in an on state and the sixth control unit & 146 is in a closed state. If the first and second radio frequency signals are received by the second day I 122 and transmitted to the receiving #13〇, the fifth control unit (4) is in an off state and an on state of the sixth control unit 146. In the above switch control mode, the RF signal and the RF signal are transmitted to the receiving transceiver 130 and enter the RF transceiver. Figure 13 shows the operation of the antenna separation according to the first embodiment of the present invention. The receiving end of the mode 4 ★ the implant loss and the reflection of the gossip 130. The figure 14 shows the receiving end 13 of the operation mode 4 of the antenna diversity switch according to the first embodiment of the present invention. Single: two isolation simulation diagrams. Figure 15 shows a simulation of the gain-reduction point of the receiver at the third end of the operation mode 4 in accordance with the first day of the present invention. Fruit shows that from 1 to 4 GHZ &quot; receiving reflection Γ two small consumption 9〇.76dB. The receiving end is second 2··, the transmission unit reflection loss is greater than the figure simulation result display, from 1 to 4 GHz, the Ρ-1〇22·Τ\ν· invention patent application vertical specification -fina| -23 - 1280741 The isolation between the first transmitting end 111 and the second transmitting end 112 is greater than 67 dB, and the isolation between the first transmitting end 11 i and the receiving end 13 = is greater than 38.7 dB, The isolation between the second transmitting end 112 and the receiving 鸲130 is greater than 8.8 dB. The simulation result of Fig. 15 is *, ,, and the display shows that the 1 dB gain compression point of the receiving end is from 1 to 4 GHz. The present invention has been disclosed in the foregoing preferred embodiments, and it is not intended to limit the invention. The above explanations 'the number of control units and the control circuit and component fabrication are not detrimental to the spirit of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. P*l 〇22-TW·Invention patent application and manual·final -24 -

Claims (1)

1280741 Patent Range: 1 · An antenna diversity switch that processes a receiving or transmitting operation of a first RF signal and a second RF signal, comprising: /, ^ transmission, which is a transmitting end of a radio frequency transceiver a second transmitting end for providing a second input signal of the antenna diversity switch; a receiving end for providing an output signal of the antenna diversity switch; electrically connecting to the first transmission The terminal is electrically connected to the first transmitting end y electrically connected to the second transmitting end and electrically connected between the second transmitting end and a first control unit, a first antenna; a second control unit, and a second control unit between the first antenna, the first antenna; a fourth control unit, between the two antennas; a fifth control unit, electrically Connected between the receiving end and the first antenna; and a sixth control unit electrically connected between the receiving end and the first antenna. 2. The antenna diversity switch of the first aspect of the patent application, wherein the first radio frequency signal is a wireless local area network (WLAN, Wireless Local Area Networks) shot P-1022-TW-invention patent application and manual final -25 - 丄28〇74i For example, in the patent application, the antenna diversity switch of the first item is: I: the first control unit is in an on state, the second control is in an off state, the third control unit is off; the fourth control unit is in an on state, The fifth control method: the third control unit and the sixth control unit are in a closed state, the transmission terminal transmits the first radio frequency signal to the life line, and the second transmission end transmits the second radio frequency f to the When the second antenna. The antenna diversity switch of the first item of the tm is the first control unit, the first control unit is in an open state, the second control is in a closed state, the third control unit is in a closed state, and the unit is When the fifth control unit is in the off state, and the sixth control unit is in the on state, the first transmitting end transmits the second antenna according to the first radio frequency signal via the first antenna. The two RF signals are transmitted to the receiving end such that the second RF signal enters the transceiver. The antenna diversity switch of item 1 of the scope of the application, the control unit of the 菖hai is in a closed state, the second control is in a closed state, the third control unit is in a closed state, and the fourth control unit is in an open state, the first When the fifth control unit is in the off state, the first and second radio frequency numbers are transmitted to the receiving end to cause a radio frequency signal to enter the transceiver, and the second transmitting end turns off the unit. The transmission and delivery to the unit of the first opening-day of the first Ρ·1〇22·Τ\Υ· invention patent application and manual-final -27 - 1280741 a radio frequency signal transmitted through the second antenna 1〇 The antenna diversity as in the scope of patent application 帛1 is that the first control unit is the closed second control unit is in the off state, the third control is in the state, and the fourth control unit is in the off state; The on state and the sixth: the control unit is configured to turn off the first radio frequency signal and the second radio frequency signal for the antenna and transmit to the receiving end. 1 1 · The antenna diversity according to item 1 of the patent application scope is that the operation is the first control unit, the second control unit is off, the first is off state, and the fourth control unit is off. ^ Five control units are in the off state and the sixth control on state. It should be noted that the fifth control unit is in a switch state, and the first and second radio frequency signals are received by the second antenna. a switch, wherein the volt state, the first element is a closed $5 control single-closed state, and the first switch, the closed state, the control unit state, the open unit of the first unit, and the RF signal are transmitted to the P-1022 -TW-Invention Patent Application and Instruction Manual-final -28 -