CN203233371U - Transmitter high frequency harmonic filter - Google Patents
Transmitter high frequency harmonic filter Download PDFInfo
- Publication number
- CN203233371U CN203233371U CN 201320203647 CN201320203647U CN203233371U CN 203233371 U CN203233371 U CN 203233371U CN 201320203647 CN201320203647 CN 201320203647 CN 201320203647 U CN201320203647 U CN 201320203647U CN 203233371 U CN203233371 U CN 203233371U
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- transmission line
- electric capacity
- diode
- capacitor
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Abstract
The utility model discloses a transmitter high frequency harmonic filter which comprises a power supply input end, a power supply output end, a signal input end, a signal output end, a first transmission line, a second transmission line, a third transmission line, a fourth transmission line, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a first diode, a second diode, a third diode, a fourth diode, a first resistor, a second resistor and a third resistor. According to the utility model, during a GSM mode launching period, through a 900MHZ signal, high order harmonic suppressing and ground connection after parallel connection with a main circuit comprising harmonics, high frequency is led into a zero line circuit; heat generation of the filter is reduced; the service life of the filter is improved; and the purpose of power consumption reducing is realized.
Description
Technical field
The utility model relates to a kind of transmitter signal processing unit, refers more particularly to a kind of transmitter high-frequency harmonic filter.
Background technology
The harmonic wave that produces on the radio paging frequency band and parasitic frequency will reduce the quality of transmitter paging service.In order to suppress the generation of harmonic wave and parasitic frequency, transmitter uses a plurality of filters from signal source to the terminal output signal, and the easy like this filter heat that causes is excessive, has shortened the useful life of filter, and power consumption is big.
The utility model content
The purpose of this utility model provides a kind of simple in structure with regard to being in order to address the above problem, and reduces other frequencies to the transmitter high-frequency harmonic filter of basic frequency influence.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises power input, power output end, signal input part, signal output part, first transmission line, second transmission line, the 3rd transmission line, the 4th transmission line, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, first diode, second diode, the 3rd diode, the 4th diode, first resistance, second resistance and the 3rd resistance, first end of described signal input part and described first transmission line, first end of described second transmission line is connected with first end of described second electric capacity, second end of described first transmission line is connected with first end of described power output end and described first electric capacity, the second end ground connection of described first electric capacity, second end of described second electric capacity is connected with the positive pole of described first diode and first end of described first resistance respectively, the minus earth of described first diode, second end of described first resistance respectively with the positive pole of described second diode, second end of second transmission line, first end of the 3rd transmission line, first end of second resistance, first end of the 3rd resistance, first end of described power input and described the 9th electric capacity is connected, the minus earth of described second diode, second end of described the 3rd transmission line respectively with first end of described the 4th electric capacity, first end of described the 5th electric capacity, first end of the 4th transmission line is connected with first end of described the 3rd electric capacity, second end of described the 3rd electric capacity is connected with second end of described second resistance and the positive pole of the 3rd triode respectively, the minus earth of described the 3rd diode, second end of described the 4th transmission line is connected with first end of described the 5th transmission line and first end of described the 6th electric capacity respectively, second end of described the 6th electric capacity is connected with second end and the positive pole of described the 4th diode and first end of described the 7th electric capacity of described the 3rd resistance respectively, second end of the negative pole of described the 4th diode and described the 7th electric capacity is ground connection respectively, second end of described the 5th electric capacity is connected with first end of described the 8th electric capacity, second end of described the 8th electric capacity respectively with second end of described the 5th transmission line, first end of described the 9th electric capacity is connected with described signal output part, the second end ground connection of described the 9th electric capacity.
Particularly, described first transmission line half-wavelength transmission line that is 2700MHZ.
Further, the input voltage of described power input is 2.7V.
The beneficial effects of the utility model are:
The utility model can be realized passing through the 900MHZ signal and suppressing high-order harmonic wave during the emission of GSM pattern, and by with ground connection after the main circuit that contains harmonic wave is in parallel, high frequency is introduced the zero line circuit, reduce the generation of filter heat, improve the useful life of filter, reach the purpose that reduces power consumption.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model comprises power input U1, power output end U2, signal input part a1, signal output part a2, the first transmission line Z1, the second transmission line Z2, the 3rd transmission line Z3, the 4th transmission line Z4, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, first resistance R 1, second resistance R 2 and the 3rd resistance R 3, first end of signal input part a1 and the described first transmission line Z1, first end of the second transmission line Z2 is connected with first end of described second capacitor C 2, second end of the first transmission line Z2 is connected with first end of first capacitor C 1 with power output end U2, the second end ground connection of first capacitor C 2, second end of second capacitor C 2 is connected with the positive pole of the first diode D1 and first end of first resistance R 1 respectively, the minus earth of the first diode D1, second end of first resistance R 1 respectively with the positive pole of the second diode D2, second end of the second transmission line Z1, first end of the 3rd transmission line Z3, first end of second resistance R 2, first end of the 3rd resistance R 3, power input U1 is connected with first end of the 9th capacitor C 9, the minus earth of the second diode D2, second end of the 3rd transmission line Z3 respectively with first end of the 4th capacitor C 4, first end of the 5th capacitor C 5, first end of the 4th transmission line Z4 is connected with first end of the 3rd capacitor C 3, second end of the 3rd capacitor C 3 is connected with second end of second resistance R 2 and the positive pole of the 3rd triode D3 respectively, the minus earth of the 3rd diode D3, second end of the 4th transmission line Z4 is connected with first end of the 5th transmission line Z5 and first end of the 6th capacitor C 6 respectively, second end of the 6th capacitor C 6 is connected with second end and the positive pole of the 4th diode D4 and first end of the 7th capacitor C 7 of the 3rd resistance R 3 respectively, second end of the negative pole of the 4th diode D4 and the 7th capacitor C 7 is ground connection respectively, second end of the 5th capacitor C 5 is connected with first end of the 8th capacitor C 8, second end of the 8th capacitor C 8 respectively with second end of the 5th transmission line Z5, first end of the 9th capacitor C 9 is connected with signal output part a2, the second end ground connection of the 9th capacitor C 9, the first transmission line Z1 is the transmission line of the half-wavelength of 2700MHZ, and the input voltage of power input U1 is 2.7V.
Operation principle of the present utility model is as follows: signal amplifies the back by power amplifier with signal and is connected to power output end by signal input part a1 by the first transmission line Z1, the second transmission line Z2, the 3rd transmission line Z3, the 4th transmission line Z4, the 5th transmission line Z5 is connected in series on the signal input part a1, when the 2.7V positive voltage source is added on power input U1, the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 conducting, in the GSM pattern, positive voltage is added on power input, and when radio telephone is in the DCS pattern, suspension voltage is added on power input, when selecting the GSM pattern by power input, by at 1800MHZ, the signal attenuation of 2700MHZ and 3600MHZ harmonic frequency and other high-order harmonic wave frequency, the operation of harmonic filter match circuit is provided at the impedance matching of 900MHZ.Yet when selecting the DCS pattern, harmonic filter mates at 1800MHZ, and only provides from the signal attenuation of 2700MHZ and 3600MHZ and high-order harmonic wave frequency.
Claims (3)
1. transmitter high-frequency harmonic filter, it is characterized in that: comprise power input, power output end, signal input part, signal output part, first transmission line, second transmission line, the 3rd transmission line, the 4th transmission line, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, first diode, second diode, the 3rd diode, the 4th diode, first resistance, second resistance and the 3rd resistance, first end of described signal input part and described first transmission line, first end of described second transmission line is connected with first end of described second electric capacity, second end of described first transmission line is connected with first end of described power output end and described first electric capacity, the second end ground connection of described first electric capacity, second end of described second electric capacity is connected with the positive pole of described first diode and first end of described first resistance respectively, the minus earth of described first diode, second end of described first resistance respectively with the positive pole of described second diode, second end of second transmission line, first end of the 3rd transmission line, first end of second resistance, first end of the 3rd resistance, first end of described power input and described the 9th electric capacity is connected, the minus earth of described second diode, second end of described the 3rd transmission line respectively with first end of described the 4th electric capacity, first end of described the 5th electric capacity, first end of the 4th transmission line is connected with first end of described the 3rd electric capacity, second end of described the 3rd electric capacity is connected with second end of described second resistance and the positive pole of the 3rd triode respectively, the minus earth of described the 3rd diode, second end of described the 4th transmission line is connected with first end of described the 5th transmission line and first end of described the 6th electric capacity respectively, second end of described the 6th electric capacity is connected with second end and the positive pole of described the 4th diode and first end of described the 7th electric capacity of described the 3rd resistance respectively, second end of the negative pole of described the 4th diode and described the 7th electric capacity is ground connection respectively, second end of described the 5th electric capacity is connected with first end of described the 8th electric capacity, second end of described the 8th electric capacity respectively with second end of described the 5th transmission line, first end of described the 9th electric capacity is connected with described signal output part, the second end ground connection of described the 9th electric capacity.
2. a kind of transmitter high-frequency harmonic filter according to claim 1 is characterized in that: the half-wavelength transmission line that described first transmission line is 2700MHZ.
3. a kind of transmitter high-frequency harmonic filter according to claim 1, it is characterized in that: the input voltage of described power input is 2.7V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320203647 CN203233371U (en) | 2013-04-22 | 2013-04-22 | Transmitter high frequency harmonic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320203647 CN203233371U (en) | 2013-04-22 | 2013-04-22 | Transmitter high frequency harmonic filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233371U true CN203233371U (en) | 2013-10-09 |
Family
ID=49289474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320203647 Expired - Fee Related CN203233371U (en) | 2013-04-22 | 2013-04-22 | Transmitter high frequency harmonic filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233371U (en) |
-
2013
- 2013-04-22 CN CN 201320203647 patent/CN203233371U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140422 |