CN201499165U - RF front-end circuit - Google Patents
RF front-end circuit Download PDFInfo
- Publication number
- CN201499165U CN201499165U CN2009203071658U CN200920307165U CN201499165U CN 201499165 U CN201499165 U CN 201499165U CN 2009203071658 U CN2009203071658 U CN 2009203071658U CN 200920307165 U CN200920307165 U CN 200920307165U CN 201499165 U CN201499165 U CN 201499165U
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- pair
- switch
- antenna
- control end
- network equipment
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Abstract
The utility model relates to a RF front-end circuit of a network device, which is connected with a pair of external antennas and a pair of internal antennas of the network device and comprises a horizontal sense switch, a vertical sense switch and a pair of single-pole double-throw switches. The horizontal sense switch is conducted when the network device is horizontally arranged, and is cut off when the network device is vertically arranged. The vertical sense switch is cut off when the network device is horizontally arranged, and is conducted when the network device is vertically arranged. A first throwing position of each single-pole double-throw switch is connected one of the pair of external antennas. A second throwing position of each single-pole double-throw switch is connected with one of the pair of internal antennas. A first control end and a second control end of each single-pole double-throw switch are used for controlling a common end to select the external antennas or the internal antennas according to the conduction and cut-off of the horizontal sense switch and the vertical sense switch. The RF front-end circuit provided by the utility model can automatically switch between the internal antennas and the external antennas and can effectively promote the quality of signal receiving and sending when changing the arrangement condition of the network device.
Description
Technical field
The utility model relates to network equipment, relates in particular to a kind of radio-frequency (RF) front-end circuit of network equipment.
Background technology
The signal transmitting and receiving ability of network equipment is an important references of decision network equipment performance, and its antenna receiving-sending quality has determined the transmitting-receiving quality of signal.At present, network equipment generally all has been equipped with two cover antennas, and one is a pair of external antenna, and another is a pair of internal connecting type printed antenna.In that network equipment is horizontal when putting, generally can be with external antenna as main dual-mode antenna, this is because the external antenna orientation angle has more elasticity, antenna gain is than internal connecting type printed antenna height, and the distance between a pair of external antenna is far away than internal connecting type printed antenna when putting, so the isolation between its antenna compares better.
But, when network equipment is vertical when putting, the antenna that is positioned at the below in a pair of external antenna is in order there to be good receiving angle, antenna forward must be rotated and make its receiving angle up, bring multiple negative effect thus, can produce serious mechanism's interference effect with the peripheral wire of network equipment as the below antenna, these two external antennas are owing to all forward rotate upwards, cause the end and the top antenna distance of below antenna too closely to cause isolation between antennae not enough, have a strong impact on antenna receiving-sending usefulness.Therefore,,, antenna part must be switched to the internal connecting type printed antenna, can bring into play the maximum function of antenna in order to guarantee good transmitting-receiving usefulness when network equipment is vertical when putting.
The utility model content
In view of this, need provide a kind of radio-frequency (RF) front-end circuit of network equipment, be used for according to the placement state of network equipment and the used antenna of automatically switching network device.
The radio-frequency (RF) front-end circuit of the network equipment in the utility model execution mode, link to each other with a pair of external antenna and a pair of internal connecting type antenna of network equipment, be used for switching and connect external antenna or internal connecting type antenna with receiving and transmitting signal according to the placement state of network equipment.Radio-frequency (RF) front-end circuit comprises horizontal sense switch, vertical sensing measurement switch and a pair of single-pole double-throw switch (SPDT).Horizontal sense switch ends during vertical putting in network equipment is horizontal conducting when putting, and its input receives control voltage.The vertical sensing measurement switch ends conducting during vertical putting, its input end grounding when putting in that network equipment is horizontal.Each single-pole double-throw switch (SPDT) comprises that common port, first throws position, second and throw position, first control end and second control end.Common port is used to transmit the signal that needs transmitting-receiving.First throws the position is connected in a pair of external antenna one, and second throws the position is connected in a pair of internal connecting type antenna one.First control end is electrically connected at the output of horizontal sense switch and vertical sensing measurement switch, and second control end is electrically connected at the output of horizontal sense switch and vertical sensing measurement switch by not gate.First control end and second control end are used for controlling common port and selecting to be connected external antenna or internal connecting type antenna with ending according to the conducting of horizontal sense switch and vertical sensing measurement switch.
Preferably, first control end and second control end control common port when horizontal sense switch conducting selects to be connected a pair of external antenna.
Preferably, first control end and second control end control common port when the vertical sensing measurement switch conduction selects to be connected a pair of internal connecting type antenna.
Preferably, a pair of external antenna is a three-dimensional antenna, and a pair of internal connecting type antenna is a printing type aerial.
The radio-frequency (RF) front-end circuit of network equipment provided by the utility model automaticallyes switch between external antenna and inside antenna by the connection status control single-pole double-throw switch (SPDT) of horizontal sense switch and vertical sensing measurement switch, can effectively promote the signal transmitting and receiving quality when changing the network equipment placement state.
Description of drawings
Fig. 1 is the circuit diagram of radio-frequency (RF) front-end circuit one execution mode of the utility model network equipment.
Embodiment
See also Fig. 1, be depicted as the circuit diagram of radio-frequency (RF) front-end circuit 10 1 execution modes of the utility model network equipment.In the present embodiment, network equipment comprises radio-frequency (RF) front-end circuit 10, a pair of external antenna E1, E2 and a pair of internal connecting type antenna P1, P2.Wherein, external antenna E1, E2 are three-dimensional antenna, and internal connecting type antenna P1, P2 are printing type aerial.
Radio-frequency (RF) front-end circuit 10 is connected in external antenna E1, E2 and internal connecting type antenna P1, P2, be used for the employed antenna of automatically switching network device when network equipment changes placement state, promptly connect external antenna E1, E2 when putting with receiving and transmitting signal in that network equipment is horizontal, connect internal connecting type antenna P1, P2 with receiving and transmitting signal when putting in that network equipment is vertical.
In the present embodiment, radio-frequency (RF) front-end circuit 10 comprises horizontal sense switch T1, vertical sensing measurement switch T2, the first single-pole double-throw switch (SPDT) SW1 and the second single-pole double-throw switch (SPDT) SW2.
Horizontal sense switch T1, vertical sensing measurement switch T2 are used for according to the placement state of network equipment and conducting or end automatically.In the present embodiment, horizontal sense switch T1 and vertical sensing measurement switch T2 comprise the gravity sensing module, can induce the placement state of network equipment automatically.Particularly, horizontal sense switch T1 ends during vertical putting in network equipment is horizontal conducting when putting.Vertical sensing measurement switch T2 ends conducting during vertical putting when putting in that network equipment is horizontal.In the present embodiment, the input of horizontal sense switch T1 receives control voltage VCC, the input end grounding of vertical sensing measurement switch T2.
The first single-pole double-throw switch (SPDT) SW1 is used for selecting connection external antenna E1 or internal connecting type antenna P1 with receiving and transmitting signal.The first single-pole double-throw switch (SPDT) SW1 comprises common port IN11, and first throws an OUT11 and second throws an OUT12, is used to select to connect external antenna E1 and internal connecting type antenna P1 first signal with the transceiver network device.Wherein common port IN11 is used to transmit first signal, and first throws an OUT11 and external antenna E1 electric connection, and second throws an OUT12 and internal connecting type antenna P1 electric connection.
The first single-pole double-throw switch (SPDT) SW1 also comprises the first control end V11 and the second control end V12, to control the first single-pole double-throw switch (SPDT) SW1 and select to be connected common port IN11 and first and throw an OUT11 or second and throw an OUT12 with ending, promptly control common port IN11 selection connection external antenna E1 or internal connecting type antenna P1 according to the conducting of horizontal sense switch T1 and vertical sensing measurement switch T2.In the present embodiment, the first control end V11 is electrically connected at the output of horizontal sense switch T1 and vertical sensing measurement switch T2.The second control end V12 is electrically connected at the output of horizontal sense switch T1 by not gate N1, is electrically connected at the output of vertical sensing measurement switch T2 by not gate N2.
In the present embodiment, when network equipment is horizontal when putting, horizontal sense switch T1 conducting, vertical sensing measurement switch T2 ends, horizontal sense switch T1 output control voltage VCC to the first control end V11, not gate N1, not gate N1 output low level signal to the second control end V12, at this moment, the common port IN21 of the first single-pole double-throw switch (SPDT) SW1 and its first thrown an OUT11 and connected, and first signal of network equipment is thrown an OUT11 by first and transferred to external antenna E1.
When the network apparatus setting is put, horizontal sense switch T1 ends, vertical sensing measurement switch T2 conducting, vertical sensing measurement switch T2 output low level signal to the first control end V11, not gate N2, not gate N2 output high level signal is to the second control end V12, at this moment, the common port IN11 of the first single-pole double-throw switch (SPDT) SW1 and second throws an OUT12 and connects, and first signal of network equipment is thrown an OUT12 by second and transferred to internal connecting type antenna P1.
The second single-pole double-throw switch (SPDT) SW2 is used to select external antenna E2 or inside antenna P2 with receiving and transmitting signal, comprises that common port IN21, first throws an OUT21 and second and throws an OUT22.Common port IN21 is used to transmit the secondary signal that network equipment need be received and dispatched.First throws an OUT21 and external antenna E2 electric connection.Second throws an OUT22 and inside antenna P2 electric connection.
The second single-pole double-throw switch (SPDT) SW2 also comprises the first control end V21 and the second control end V22, to control the second single-pole double-throw switch (SPDT) SW2 and select to be connected common port IN21 and first and throw an OUT21 or second and throw an OUT22 with ending, promptly control common port IN21 selection connection external antenna E2 or internal connecting type antenna P2 according to the conducting of horizontal sense switch T1 and vertical sensing measurement switch T2.In the present embodiment, the first control end V21 is electrically connected at the output of horizontal sense switch T1 and vertical sensing measurement switch T2.The second control end V22 is electrically connected at the output of horizontal sense switch T1 by not gate N3, is electrically connected at the output of vertical sensing measurement switch T2 by not gate N4.
In the present embodiment, when network equipment is horizontal when putting, horizontal sense switch T1 conducting, vertical sensing measurement switch T2 ends, horizontal sense switch T1 output control voltage VCC to the first control end V21, not gate N3, not gate N3 output low level signal to the second control end V22, at this moment, the common port IN21 of the second single-pole double-throw switch (SPDT) SW2 and its first thrown an OUT21 and connected, and the secondary signal of network equipment is thrown an OUT21 by first and transferred to external antenna E2.
When network apparatus is vertical when putting, horizontal sense switch T1 ends, vertical sensing measurement switch T2 conducting, vertical sensing measurement switch T2 output low level signal to the first control end V21, not gate N4, not gate N4 output high level signal is to the second control end V22, at this moment, the common port IN21 of V21 and second throws an OUT22 and connects, and the secondary signal of network equipment is thrown an OUT22 by second and transferred to internal connecting type antenna P2.
Therefore, the radio-frequency (RF) front-end circuit 10 of network equipment provided by the utility model is by the connection status of horizontal sense switch T1 and vertical sensing measurement switch T2, control the first single-pole double-throw switch (SPDT) SW1, the second single-pole double-throw switch (SPDT) SW2 in that network equipment is horizontal when putting by external antenna E1, E2 receiving and transmitting signal, when vertical putting, automatically switch to internal connecting type antenna P1, P2 with receiving and transmitting signal, thereby when changing the placement state of network equipment, can promote the signal transmitting and receiving quality automatically.
Claims (4)
1. the radio-frequency (RF) front-end circuit of a network equipment, link to each other with a pair of external antenna and a pair of internal connecting type antenna of described network equipment, be used for switching and connect described a pair of external antenna or described a pair of internal connecting type antenna with receiving and transmitting signal according to the placement state of described network equipment, it is characterized in that described radio-frequency (RF) front-end circuit comprises:
Horizontal sense switch, it ends during vertical putting in described network equipment is horizontal conducting when putting, and its input receives control voltage;
The vertical sensing measurement switch, it ends conducting during vertical putting, its input end grounding when putting in that described network equipment is horizontal; And
A pair of single-pole double-throw switch (SPDT) is used for selecting to connect described a pair of external antenna or described a pair of internal connecting type antenna, and each single-pole double-throw switch (SPDT) comprises:
Common port is used to transmit the signal that needs transmitting-receiving;
First throws the position, is connected in the described a pair of external antenna;
Second throws the position, is connected in the described a pair of internal connecting type antenna;
First control end is electrically connected at the output of described horizontal sense switch and described vertical sensing measurement switch; And
Second control end is electrically connected at the output of described horizontal sense switch and described vertical sensing measurement switch by not gate;
Wherein, described first control end and described second control end are controlled described common port and are selected to be connected described a pair of external antenna or described a pair of internal connecting type antenna with ending according to the conducting of described horizontal sense switch and described vertical sensing measurement switch.
2. radio-frequency (RF) front-end circuit as claimed in claim 1 is characterized in that, described first control end and described second control end are controlled described common port and selected to be connected described a pair of external antenna when described horizontal sense switch conducting.
3. radio-frequency (RF) front-end circuit as claimed in claim 1 is characterized in that, described first control end and described second control end are controlled described common port and selected to be connected described a pair of internal connecting type antenna when described vertical sensing measurement switch conduction.
4. radio-frequency (RF) front-end circuit as claimed in claim 1 is characterized in that, described a pair of external antenna is a three-dimensional antenna, and described a pair of internal connecting type antenna is a printing type aerial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203071658U CN201499165U (en) | 2009-07-30 | 2009-07-30 | RF front-end circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203071658U CN201499165U (en) | 2009-07-30 | 2009-07-30 | RF front-end circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201499165U true CN201499165U (en) | 2010-06-02 |
Family
ID=42442360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203071658U Expired - Lifetime CN201499165U (en) | 2009-07-30 | 2009-07-30 | RF front-end circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201499165U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103503333A (en) * | 2011-05-02 | 2014-01-08 | 苹果公司 | Electronic device with idle mode antenna switching |
| CN105323075A (en) * | 2014-06-17 | 2016-02-10 | 国基电子（上海）有限公司 | Network device |
| CN107612583A (en) * | 2017-10-19 | 2018-01-19 | 环鸿电子（昆山）有限公司 | The antenna system and control method of changeable external antenna |
-
2009
- 2009-07-30 CN CN2009203071658U patent/CN201499165U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103503333A (en) * | 2011-05-02 | 2014-01-08 | 苹果公司 | Electronic device with idle mode antenna switching |
| CN103503333B (en) * | 2011-05-02 | 2016-04-06 | 苹果公司 | There is the electronic equipment that idle mode antenna switches |
| CN105323075A (en) * | 2014-06-17 | 2016-02-10 | 国基电子（上海）有限公司 | Network device |
| CN107612583A (en) * | 2017-10-19 | 2018-01-19 | 环鸿电子（昆山）有限公司 | The antenna system and control method of changeable external antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180301 Address after: Shanghai City, Songjiang Export Processing Zone South Road No. 1925 Patentee after: Ambit Microsystems (Shanghai) Co., Ltd. Address before: 201613 Shanghai city south of Songjiang Export Processing Zone Road No. 1925 Co-patentee before: Hon Hai Precision Industry Co., Ltd. Patentee before: Ambit Microsystems (Shanghai) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100602 |
|
| CX01 | Expiry of patent term |