CN101179677A - Television tuner and manufacturing method thereof - Google Patents
Television tuner and manufacturing method thereof Download PDFInfo
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- CN101179677A CN101179677A CNA2006101433937A CN200610143393A CN101179677A CN 101179677 A CN101179677 A CN 101179677A CN A2006101433937 A CNA2006101433937 A CN A2006101433937A CN 200610143393 A CN200610143393 A CN 200610143393A CN 101179677 A CN101179677 A CN 101179677A
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Abstract
The invention discloses a TV tuner that includes an extremely-high/ultra-high frequency tracking filter, an extremely-high/ultra-high frequency impedance matching circuit and a conversion tuner of an integrated circuit. The extremely-high/ultra-high frequency tracking filter includes a first co-firing ceramic inductor in low temperature, a first variable capacitance diode and a fine tuner which are electrically connected to determine the oscillation frequency of the extremely-high/ultra-high frequency tracking filter; and the extremely-high/ultra-high frequency impedance matching circuit includes a second co-firing ceramic inductor in low temperature, a second variable capacitance diode and the capacitor which are electrically connected to determine the oscillation frequency of the extremely-high/ultra-high frequency impedance matching circuit.
Description
Technical field
The present invention relates to a kind of device and method of TV tuner, and particularly relate to the device or the method for a kind of hyperfrequency/uhf television tuner.
Background technology
Along with the communication technology and compress technique progress, television broadcasting little by little replaces to digital television broadcasting from analog television broadcast.The change of digital broadcasting drives developing rapidly of related industry, Digital Television and set-top box (Set-Top-Box, STB) be exactly a ring wherein, and tuner (tuner) circuit is all accounting for critical role in digital television and set-top box or mobile receiving system.Tuner, be commonly called as station selector, its function is earlier the radiofrequency signal that receives to be amplified, the channel of selecting the channel wanted and filtering not to want then, to avoid channel not in the frequency reducing process, to interfere with the channel of wanting, again this is mixed down to intermediate frequency range through the radiofrequency signal of filtering afterwards.
Because developing rapidly of mobile type digital TV, grow with each passing day for the Digital Television of small size and the requirement of set-top box, yet employed air core coil in the TV tuner, not only need big space and printed circuit board area, more need artificial plug-in unit, therefore make that production cost improves, its excessive bulk also makes the mobile of Digital Television become difficulty.
Therefore, need a kind of volume little, do not need artificial plug-in unit, can reduce production costs, and make the Digital Television mobile become possible TV tuner.
Summary of the invention
Therefore one aspect of the present invention is providing a kind of TV tuner exactly, makes this TV tuner volume reduce, and Digital Television and set-top box are able to mobile.
According to a preferred embodiment of the present invention, this TV tuner has a hyperfrequency tracking filter, a hyperfrequency impedance matching circuit and a single conversion tuner integrated circuit, wherein, the hyperfrequency tracking filter comprises that one first LTCC inductance, one first variable capacitance diode and a trimmer electrically connect mutually; The hyperfrequency impedance matching circuit comprises that then one second LTCC inductance, one second variable capacitance diode and an electric capacity electrically connect mutually.
The trimmer of hyperfrequency tracking filter and the first LTCC inductance are in order to the resonance frequency of decision hyperfrequency tracking filter; The second LTCC inductance in the hyperfrequency impedance matching circuit and second variable capacitance diode are in order to the frequency of oscillation of decision hyperfrequency impedance matching circuit; The modulation voltage that the single conversion tuner integrated circuit is produced is in order to adjust the capacitance of first, second variable capacitance diode in hyperfrequency tracking filter and the hyperfrequency impedance matching circuit.
According to another preferred embodiment of the present invention, this TV tuner has a superfrequency tracking filter, a superfrequency impedance matching circuit and a single conversion tuner integrated circuit, wherein, the superfrequency tracking filter comprises that the first LTCC inductance, first variable capacitance diode and trimmer electrically connect mutually; The superfrequency impedance matching circuit comprises that the second LTCC inductance, second variable capacitance diode and electric capacity electrically connect mutually.
The trimmer of superfrequency tracking filter and the first LTCC inductance are in order to the resonance frequency of decision superfrequency tracking filter; The second LTCC inductance in the superfrequency impedance matching circuit and second variable capacitance diode are in order to the frequency of oscillation of decision superfrequency impedance matching circuit; The modulation voltage that the single conversion tuner integrated circuit is produced is in order to adjust the capacitance of first, second variable capacitance diode in superfrequency tracking filter and the superfrequency impedance matching circuit.
The TV tuner that is provided according to the abovementioned embodiments of the present invention, wherein, in tracking filter, impedance matching circuit and the single conversion tuner integrated circuit, used the LTCC sense to substitute existing air core coil inductance commonly used, therefore can reduce the volume of Digital Television or set-top box in large quantities, make Digital Television or set-top box be able to mobile.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of accompanying drawing:
Fig. 1 shows a kind of hyperfrequency/uhf television tuner circuit according to a preferred embodiment of the present invention.
Fig. 2 A shows a kind of hyperfrequency tracking filter circuit according to a preferred embodiment of the present invention.
Fig. 2 B shows the frequency response according to a kind of hyperfrequency tracking filter of a preferred embodiment of the present invention.
Fig. 3 A shows a kind of hyperfrequency impedance matching circuit according to another preferred embodiment of the present invention.
Fig. 3 B shows the frequency response according to a kind of hyperfrequency impedance matching circuit of another preferred embodiment of the present invention.
Fig. 4 A shows a kind of superfrequency tracking filter according to another preferred embodiment of the present invention.
Fig. 4 B shows the frequency response according to a kind of superfrequency tracking filter of another preferred embodiment of the present invention.
Fig. 5 A shows a kind of superfrequency impedance matching circuit according to another preferred embodiment of the present invention.
Fig. 5 B shows the frequency response according to a kind of superfrequency impedance matching circuit of another preferred embodiment of the present invention.
Fig. 6 shows a kind of single conversion tuner integrated circuit according to another preferred embodiment of the present invention.
The reference numeral explanation
101: antenna
103: preamplifier
105: the hyperfrequency tracking filter
107: the secondary amplifier
109: the hyperfrequency impedance matching circuit
111: the superfrequency tracking filter
113: the secondary amplifier
115: the superfrequency impedance matching circuit
117: the single conversion tuner integrated circuit
201a: electric capacity
203a: electric capacity
205a: LTCC inductance
207a: LTCC inductance
209a: the first LTCC inductance
211a: electric capacity
213a: first variable capacitance diode
215a: trimmer
201b: hyperfrequency tracking filter frequency response
203b: hyperfrequency tracking filter frequency response (the first variable capacitance diode 213a, trimmer 215a capacitance increase)
301a: resistance
303a: electric capacity
305a: the second LTCC inductance
307a: electric capacity
309a: electric capacity
311a: electric capacity
313a: second variable capacitance diode
301b: hyperfrequency impedance matching circuit frequency response
303b: hyperfrequency impedance matching circuit frequency response (the second LTCC inductance 305a inductance value, the second variable capacitance diode 313a capacitance increase)
401a: electric capacity
403a: LTCC inductance
405a: the first LTCC inductance
407a: LTCC inductance
411a: electric capacity
413a: first variable capacitance diode
415a: trimmer
401b: superfrequency tracking filter frequency response
403b: superfrequency tracking filter frequency response (the first variable capacitance diode 413a, trimmer 415a capacitance increase)
501a: electric capacity
503a: the second LTCC inductance
505a: LTCC inductance
507a: electric capacity
509a: second variable capacitance diode
501b: maximum gain point
503b: maximum gain point (increase of the second LTCC inductance 503a inductance value)
505b: superfrequency impedance matching circuit frequency response
507b: superfrequency impedance matching circuit frequency response (increase of the second LTCC inductance 503a inductance value)
601: electric capacity
603: electric capacity
605: electric capacity
607: electric capacity
609: electric capacity
611: the three LTCC inductance (hyperfrequency)
613: the three modulating capacitors (hyperfrequency)
615: the three variable capacitance diodes (hyperfrequency)
617: the three trimmers (hyperfrequency)
619: resistance
621: the three resistance (hyperfrequency)
623: electric capacity
625: electric capacity
627: the three LTCC inductance (superfrequency)
629: the three variable capacitance diodes (superfrequency)
631: the three trimmers (superfrequency)
633: the three modulating capacitors (superfrequency)
635: the three resistance (superfrequency)
637: resistance
639: the hyperfrequency modulation voltage produces end
640: the superfrequency modulation voltage produces end
641: the ultrahigh frequency oscillator input
643: ultrahigh frequency oscillator output
645: the ultra-high frequency generator input
647: ultra-high frequency generator output
649: anti-phase ultra-high frequency generator output
651: anti-phase ultra-high frequency generator input
653: power end
Embodiment
TV tuner internal circuit of the present invention uses the LTCC inductance with instead of null wire-core coil inductance, therefore can reduce the volume of TV tuner in large quantities, makes Digital Television be able to mobile.Below will and describe in detail and clearly demonstrate spirit of the present invention with diagram, as the person skilled in the art after understanding preferred embodiment of the present invention, when can be by the technology of teachings of the present invention, change and modification, it does not break away from spirit of the present invention and scope.
Embodiment one
Please refer to Fig. 1, it shows the uhf television tuner circuit calcspar according to a preferred embodiment of the present invention, be to electrically connect mutually, wherein use the LTCC inductance in hyperfrequency tracking filter 105, hyperfrequency impedance matching circuit 109 and the conversion tuner integrated circuits 117 to replace the air core coil inductance by antenna 101, preamplifier 103, hyperfrequency tracking filter 105, secondary amplifier 107, hyperfrequency impedance matching circuit 109 and a single conversion tuner integrated circuit 117.
Please refer to Fig. 2 A, it shows the circuit diagram according to the hyperfrequency tracking filter 105 of a preferred embodiment of the present invention.Hyperfrequency tracking filter 105 comprises the first variable capacitance diode 213a, trimmer 215a and the first LTCC inductance 209a.Wherein, first variable capacitance diode 213a series connection trimmer 215a, the first LTCC inductance 209a then is parallel to the first variable capacitance diode 213a and the trimmer 215a of series connection.In addition, more comprise several other electric capacity and several other inductance and be electrically connected at the first variable capacitance diode 213a and the first LTCC inductance 209a.
Shown in Fig. 2 B, it shows the frequency response of hyperfrequency tracking filter 105, because of the capacitance of the trimmer 215a and the first variable capacitance diode 213a and the frequency of these hyperfrequency tracking filter 105 maximum gains have inverse relation, so can change the frequency of oscillation of hyperfrequency tracking filter 105 by the capacitance of adjusting the trimmer 215a and the first variable capacitance diode 213a.Capacitance increase as the trimmer 215a or the first variable capacitance diode 213a, the frequency response meeting of hyperfrequency tracking filter 105 is by the frequency response 203b (dotted line) that changes after preceding frequency response 201b (solid line) drops to change, otherwise if capacitance reduces, then the frequency of the maximum gain of high frequency tracking filter 105 can be with rising.
Please refer to Fig. 3 A, it shows the circuit diagram according to the hyperfrequency impedance matching circuit 109 of a preferred embodiment of the present invention.Hyperfrequency impedance matching circuit 109 comprises the second LTCC inductance 305a, the second variable capacitance diode 313a and electric capacity 307a.Wherein, the second variable capacitance diode 313a connects with electric capacity 307a, and the second LTCC inductance 305a then is parallel to this second variable capacitance diode 313a and this electric capacity 307a of series connection.In addition, hyperfrequency impedance matching circuit 109 more comprises several resistance and other electric capacity, is electrically connected at the second LTCC inductance 305a, the second variable capacitance diode 313a and electric capacity 307a.
Shown in Fig. 3 B, it shows the frequency response of hyperfrequency impedance matching circuit 109, the frequency of the maximum gain of the cause second LTCC inductance 305a inductance value and the second variable capacitance diode 313a capacitance and hyperfrequency impedance matching circuit 109 has inverse relation, so can be by adjusting the second LTCC inductance 305a inductance value and the second variable capacitance diode 313a capacitance to change the frequency of oscillation of hyperfrequency impedance matching circuit 109, when the inductance value of the second LTCC inductance 305a or the capacitance increase of the second variable capacitance diode 313a, the frequency response meeting of hyperfrequency impedance matching circuit 109 is thereupon by the frequency response 303b (dotted line) that changes after preceding frequency response 301b (solid line) is reduced to change, otherwise then the frequency of maximum gain can decrease or increase.
Embodiment two
Please referring again to Fig. 1, wherein also illustrate uhf television tuner circuit calcspar, be formed by connecting by antenna 101, preamplifier 103, superfrequency tracking filter 111, secondary amplifier 113, superfrequency impedance matching circuit 115 and conversion tuner integrated circuits 117 according to another preferred embodiment of the present invention.Be that with uhf television tuner difference the operating frequency of two circuit is different.Wherein, use the LTCC inductance to replace the air core coil inductance in superfrequency tracking filter 111, superfrequency impedance matching circuit 115 and the single conversion tuner integrated circuit 117.
Please refer to Fig. 4 A, it shows the circuit diagram of superfrequency tracking filter 111.Superfrequency tracking filter 111 is roughly the same with the hyperfrequency tracking filter 105 of Fig. 2 A, difference only is that the superfrequency tracking filter 111 of Fig. 4 A has omitted the first LTCC inductance 209a, and the electric capacity 203a of Fig. 2 A replaced becomes LTCC inductance 403a.
Shown in Fig. 4 B, it shows the frequency response chart of superfrequency tracking filter 111, the hyperfrequency tracking filter 105 of the modulation system of the frequency of superfrequency tracking filter 111 maximum gains and a preferred embodiment of the present invention Fig. 2 A is roughly the same, and both are only different in operating frequency.Because of the capacitance of the trimmer 415a and the first variable capacitance diode 413a and the frequency of these superfrequency tracking filter 111 maximum gains have inverse relation, so, can change the frequency of oscillation of superfrequency tracking filter 111 by the capacitance of adjusting the trimmer 415a and the first variable capacitance diode 413a.Capacitance increase as the trimmer 415a or the first variable capacitance diode 413a, the frequency response meeting of superfrequency tracking filter 111 is by the frequency response 403b (dotted line) that changes after preceding frequency response 401b (solid line) is reduced to change, otherwise, if capacitance reduces, then the frequency of the maximum gain of superfrequency tracking filter 111 can rise thereupon.
Please refer to Fig. 5 A, it shows the circuit of superfrequency impedance matching circuit 115.Wherein, the second variable capacitance diode 509a in the superfrequency impedance matching circuit 115 is series at electric capacity 507a, and the second LTCC inductance 503a then is parallel to the second variable capacitance diode 509a and the electric capacity 507a of series connection.Superfrequency impedance matching circuit 115 more comprises several resistance and other electric capacity, is electrically connected at the second LTCC inductance 503a, the second variable capacitance diode 509a and electric capacity 507a.
Shown in Fig. 5 B, it shows the frequency response of superfrequency impedance matching circuit 115, the inductance value of the cause second LTCC inductance 503a and the frequency of superfrequency impedance matching circuit 115 maximum gains are a proportional relation, so can be just by adjusting the second LTCC inductance 503a inductance value to adjust the frequency of superfrequency impedance matching circuit 115 maximum gains, inductance value increase as 503a, then the frequency of the maximum gain of superfrequency impedance matching circuit 115 is also by the 503b (dotted line 507b) that changes after preceding 501b (solid line 505b) rises to change, otherwise, when the inductance value of 503a reduces, then the frequency of maximum gain also descends.
Please refer to Fig. 6, it shows according to the frequency of oscillation in the single conversion tuner integrated circuit 117 of a preferred embodiment of the present invention and produces circuit, comprise: relevant with the hyperfrequency modulation voltage the 3rd variable capacitance diode 615, the 3rd trimmer 617, the 3rd modulating capacitor 613, the 3rd LTCC inductance 611 and the 3rd resistance 621 are electrically connected at the hyperfrequency modulation voltage and produce end 639; Relevant with the superfrequency modulation voltage the 3rd variable capacitance diode 629, the 3rd trimmer 631, the 3rd modulating capacitor 633, the 3rd LTCC inductance 627 and one the 3rd resistance 635 are electrically connected at the superfrequency modulation voltage and produce end 640.
In the circuit relevant with the hyperfrequency modulation voltage, the 3rd trimmer 617 is parallel to the 3rd variable capacitance diode 615, first end of the 3rd modulating capacitor 613 is connected in first end of the 3rd variable capacitance diode 615 in parallel and first end of the 3rd trimmer 617, second end of the 3rd modulating capacitor 613 then is connected in first end of the 3rd LTCC inductance 611, and second end of the 3rd LTCC inductance 611 then is connected in second end of the 3rd variable capacitance diode 615 and second end of the 3rd trimmer 617.First end of the 3rd resistance 621 is connected in first end of the 3rd variable capacitance diode 615, first end of the 3rd trimmer 617 and first end of the 3rd modulating capacitor 613, and second end then is connected in the hyperfrequency modulation voltage and produces end 639.
Wherein, the 3rd modulating capacitor 613 makes the hyperfrequency modulation voltage produce end 639 and falls between 0 volt to 30 volts in order to the scope of decision hyperfrequency modulation voltage, and 617 of the 3rd trimmers produce end 639 in order to fine tune hyperfrequency modulation voltage.This hyperfrequency modulation voltage is in order to first variable capacitance diode 213a of adjustment hyperfrequency tracking filter 105 and the second variable capacitance diode 313a capacitance of hyperfrequency impedance matching circuit 109, heal greatly when the magnitude of voltage of hyperfrequency modulation voltage, the capacitance of the first variable capacitance diode 213a (and capacitance of the second variable capacitance diode 313a) is more little.
In the circuit relevant with the superfrequency modulation voltage, the 3rd LTCC inductance 627 is series at the 3rd modulating capacitor 633, this series connection the 3rd low temperature co-fired 627 in parallel with the 3rd modulating capacitor 633 and the 3rd variable capacitance diode 629, the 3rd trimmer 331, first end of the 3rd resistance 335 is connected in the 3rd variable capacitance diode 329, the 3rd modulating capacitor 633 and the 3rd trimmer 631, the second ends and then is connected in superfrequency modulation voltage generation end 640.
Wherein, the 3rd modulating capacitor 633 is in order to the scope of decision superfrequency modulation voltage, the magnitude of voltage that makes the superfrequency modulation voltage produce end 640 falls between 0 volt to 30 volts, 631 magnitudes of voltage that produce end 640 in order to fine tune superfrequency modulation voltage of the 3rd trimmer.This superfrequency modulation voltage is in order to first variable capacitance diode 413a of adjustment superfrequency tracking filter 111 and the second variable capacitance diode 509a capacitance of superfrequency impedance matching circuit 115, when the magnitude of voltage of superfrequency modulation voltage is healed big, the capacitance of the first variable capacitance diode 413a (or second variable capacitance diode 509a capacitance) is more little, and both are a monotonic decreasing function.
By the invention described above preferred embodiment as can be known, in tracking filter of the present invention, impedance matching circuit and single conversion tuner integrated circuit, use the LTCC inductance to replace the air core coil inductance, can reduce the volume of TV tuner in a large number, save the program of artificial plug-in unit, therefore can reduce production costs effectively.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking appended the claim person of defining.
Claims (22)
1. a TV tuner has a hyperfrequency tracking filter, a hyperfrequency impedance matching circuit and a single conversion tuner integrated circuit, it is characterized in that:
This hyperfrequency tracking filter comprises at least one first LTCC inductance, one first variable capacitance diode and a trimmer and electrically connects mutually, in order to determine the frequency of oscillation of this hyperfrequency tracking filter; And
This hyperfrequency impedance matching circuit comprises at least one second LTCC inductance, one second variable capacitance diode and an electric capacity and electrically connects mutually, in order to determine the frequency of oscillation of this hyperfrequency impedance matching circuit.
2. TV tuner as claimed in claim 1 more comprises:
One preamplifier is electrically connected at the input of this hyperfrequency tracking filter, in order to amplification input signal; And
One secondary amplifier is electrically connected between this hyperfrequency tracking filter and the hyperfrequency impedance matching circuit, in order to amplify the output signal of this hyperfrequency tracking filter.
3. TV tuner as claimed in claim 1, wherein, this first variable capacitance diode in this hyperfrequency tracking filter connect this trimmer and this first LTCC inductance this first variable capacitance diode in parallel and this trimmer.
4. TV tuner as claimed in claim 1, wherein, the frequency of the capacitance of this trimmer and this first variable capacitance diode and this hyperfrequency tracking filter maximum gain is an inverse relation.
5. TV tuner as claimed in claim 1, wherein, this second variable capacitance diode and this capacitances in series in this hyperfrequency impedance matching circuit, this second LTCC inductance then is parallel to this second variable capacitance diode and this electric capacity of series connection.
6. TV tuner as claimed in claim 1, wherein, the frequency of this second LTCC inductance inductance value and this second varactor capacitance value and this hyperfrequency impedance matching circuit maximum gain has inverse relation.
7. TV tuner as claimed in claim 1, wherein, this single conversion tuner integrated circuit comprises:
One frequency of oscillation produces circuit, has:
One the 3rd variable capacitance diode;
One the 3rd trimmer is parallel to the 3rd variable capacitance diode;
One the 3rd modulating capacitor, first end are connected in the 3rd variable capacitance diode first end and the 3rd trimmer first end;
One the 3rd LTCC inductance, first end are connected in the 3rd modulating capacitor second end, and second end of the 3rd LTCC inductance then is connected in the 3rd variable capacitance diode second end and the 3rd trimmer second end; And
One the 3rd resistance, first end are connected in first end of the 3rd variable capacitance diode, first end of the 3rd trimmer and first end of the 3rd modulating capacitor, and second end then is connected in the hyperfrequency modulation voltage and produces end.
8. TV tuner as claimed in claim 7, wherein, the capacitance of this hyperfrequency modulation voltage and this first variable capacitance diode and this second variable capacitance diode has inverse relation.
9. a TV tuner has a superfrequency tracking filter, a superfrequency impedance matching circuit and a single conversion tuner integrated circuit, it is characterized in that:
This superfrequency tracking filter comprises at least one first LTCC inductance, one first variable capacitance diode and a trimmer and electrically connects mutually, in order to determine the frequency of oscillation of this superfrequency tracking filter; And
This superfrequency impedance matching circuit comprises at least one second LTCC inductance, one second variable capacitance diode and an electric capacity and electrically connects mutually, in order to determine the frequency of oscillation of this superfrequency impedance matching circuit.
10. TV tuner as claimed in claim 9 more comprises
One preamplifier is electrically connected at this superfrequency tracking filter input, in order to amplification input signal; And
One secondary amplifier, this secondary amplifier are electrically connected between this superfrequency tracking filter and the superfrequency impedance matching circuit, in order to amplify the output signal of this superfrequency tracking filter.
11. TV tuner as claimed in claim 9, wherein, series connection mutually between this first variable capacitance diode, this trimmer and this first LTCC inductance in this superfrequency tracking filter.
12. TV tuner as claimed in claim 9, wherein, the frequency of the capacitance of this trimmer and this first variable capacitance diode and the maximum gain of this superfrequency tracking filter has the class inverse relation.
13. TV tuner as claimed in claim 9, wherein, this second variable capacitance diode in this superfrequency impedance matching circuit is series at this electric capacity, and this second LTCC inductance then is parallel to this second variable capacitance diode and this electric capacity of series connection.
14. TV tuner as claimed in claim 9, wherein, the frequency of this second LTCC inductance inductance value and this superfrequency impedance matching circuit maximum gain has proportional relation.
15. TV tuner as claimed in claim 9, wherein, this single conversion tuner integrated circuit comprises:
One frequency of oscillation produces circuit, has:
One the 3rd variable capacitance diode;
One the 3rd trimmer;
One the 3rd modulating capacitor;
One the 3rd LTCC inductance is series at the 3rd modulating capacitor, and the 3rd modulating capacitor of series connection is then in parallel with the 3rd variable capacitance diode and the 3rd trimmer with the 3rd LTCC inductance; And
One the 3rd resistance, first end are connected in the 3rd variable capacitance diode, the 3rd trimmer and the 3rd modulating capacitor, and second end then is connected in the superfrequency modulation voltage and produces end.
16. TV tuner as claimed in claim 15, wherein, the capacitance of this modulation voltage and this first variable capacitance diode and this second variable capacitance diode has inverse relation.
17. the manufacture method of a TV tuner, this TV tuner have a hyperfrequency tracking filter, a hyperfrequency impedance matching circuit and a single conversion tuner integrated circuit, this manufacture method is characterised in that:
Use the LTCC inductance as in this hyperfrequency tracking filter and this hyperfrequency impedance matching circuit in order to the inductance of decision frequency of oscillation;
Adjust this single conversion tuner integrated circuit to determine a modulation voltage, wherein, this modulation voltage is in order to determine the capacitance of first variable capacitance diode in this hyperfrequency tracking filter and this hyperfrequency impedance matching circuit and second variable capacitance diode; And
Adjust trimmer in this hyperfrequency tracking filter and the second LTCC inductance in this hyperfrequency impedance matching circuit with the decision resonance frequency.
18. the manufacture method of TV tuner as claimed in claim 17, wherein, this modulation voltage and this trimmer are in order to modulate the maximum gain frequency of this hyperfrequency tracking filter, the frequency of this modulation voltage and maximum gain has proportional relation, and the capacitance of this trimmer and the frequency of maximum gain have inverse relation.
19. the manufacture method of TV tuner as claimed in claim 17, wherein, this modulation voltage and this second LTCC inductance are in order to modulate the maximum gain frequency of this hyperfrequency impedance matching circuit, the frequency of this modulation voltage and maximum gain has proportional relation, and the frequency of this second LTCC inductance inductance value and maximum gain has inverse relation.
20. the manufacture method of a TV tuner, this TV tuner have a superfrequency tracking filter, a superfrequency impedance matching circuit and a single conversion tuner integrated circuit, this manufacture method is characterised in that:
Use the LTCC inductance as in this superfrequency tracking filter and this superfrequency impedance matching circuit in order to the inductance of decision frequency of oscillation;
Adjust this single conversion tuner integrated circuit to determine a modulation voltage, wherein, this modulation voltage is in order to determine the capacitance of first variable capacitance diode in this superfrequency tracking filter and this superfrequency impedance matching circuit and second variable capacitance diode; And
Adjust trimmer in this superfrequency tracking filter and the second LTCC inductance in this superfrequency impedance matching circuit with the decision resonance frequency.
21. the manufacture method of TV tuner as claimed in claim 20, wherein, this modulation voltage and this trimmer are in order to modulate the maximum gain frequency of this superfrequency tracking filter, the frequency of this modulation voltage and maximum gain has proportional relation, and the capacitance of this trimmer and the frequency of maximum gain have inverse relation.
22. the manufacture method of TV tuner as claimed in claim 20, wherein, this second LTCC inductance is in order to modulate the maximum gain frequency of this superfrequency impedance matching circuit, and the inductance value of this second LTCC inductance and the frequency of maximum gain have proportional relation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101433937A CN101179677B (en) | 2006-11-08 | 2006-11-08 | Television tuner and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101433937A CN101179677B (en) | 2006-11-08 | 2006-11-08 | Television tuner and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101179677A true CN101179677A (en) | 2008-05-14 |
| CN101179677B CN101179677B (en) | 2011-12-14 |
Family
ID=39405746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101433937A Expired - Fee Related CN101179677B (en) | 2006-11-08 | 2006-11-08 | Television tuner and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101179677B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938613A (en) * | 2009-06-29 | 2011-01-05 | 硅实验室公司 | The tracking filter that is used for TV tuner |
| WO2019056853A1 (en) * | 2017-09-21 | 2019-03-28 | 深圳市九洲电器有限公司 | Set-top box tuner protection device and protection method |
| CN112189285A (en) * | 2018-05-29 | 2021-01-05 | 三菱电机株式会社 | Optical module and optical transmitter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130839A (en) * | 1995-03-06 | 1996-09-11 | 郑永裕 | Frequency converting receiving tuner for wired television |
| JPH09284157A (en) * | 1996-04-17 | 1997-10-31 | Alps Electric Co Ltd | Tuner provided with distribution circuit |
| JP2003244567A (en) * | 2002-02-14 | 2003-08-29 | Alps Electric Co Ltd | Television tuner |
-
2006
- 2006-11-08 CN CN2006101433937A patent/CN101179677B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938613A (en) * | 2009-06-29 | 2011-01-05 | 硅实验室公司 | The tracking filter that is used for TV tuner |
| CN101938613B (en) * | 2009-06-29 | 2013-03-27 | 硅实验室公司 | Tracking filter for a television tuner |
| WO2019056853A1 (en) * | 2017-09-21 | 2019-03-28 | 深圳市九洲电器有限公司 | Set-top box tuner protection device and protection method |
| CN112189285A (en) * | 2018-05-29 | 2021-01-05 | 三菱电机株式会社 | Optical module and optical transmitter |
| CN112189285B (en) * | 2018-05-29 | 2022-08-05 | 三菱电机株式会社 | Optical module and optical transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101179677B (en) | 2011-12-14 |
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