Digital medium frequency filtering method This invention relates to a digital IF filter method including: filtering analog IF signals with the input frequency of 140MHz and bandwidth smaller than 31.25MHz with a digital filter mo...
Loop low pass filter A filter of loop low-pass type consists of resistance, the first thin gate depletion-mode NMOS tube, the second thin gate depletion-mode NMOS tube and level shifter. It is featured as con...
7
200610147649
Frequency tracking power frequency digital filtering method A method for filtering power frequency digit by frequency-tracking includes switching power frequency reference signal into signal input end of phase locked loop, outputting eight frequen...
8
200610169262
Piezoelectric device A piezoelectric device includes a piezoelectric resonator and an electronic element mounted horizontally on an upper surface of a substrate, and the electronic element being lower in heig...
Low pass continuous adjustable filter and filtering method A low-pass continuous adjustable filter consists of DSP, A/D converter, D/A converter, input and output synchronous FIFO buffer regions, storage and clock generator. It is featured as sto...
11
200610167893
Orthogonal filter set designing method and apparatus A method for designing QMF set includes designing original filter according to preset initial cut-off frequency, calculating system function of analysis filter according to system functio...
Magnetostatic surface wave dispersion control structure A dispersion control structure of magneto-static surface wave applies multilayer film structure and makes contact surface between layers be planar surface in order to utilize coupling act...
14
200610160981
Balance to non-balance transducer with filter function The invention is concerned with the balance to unbalance transducer with filter function, includes: the unbalance single end outputting and inputting port, the first transmission line and...
15
200610164513
Electronic component Providing an electronic component includes a package having a cavity formed therein by providing an annular protrusion on a substrate as well as having a metallized layer on a bottom surf...
Echo elimination device for microphone and method thereof This invention discloses a microphone echo elimination device and method, which eliminates echo between microphone and sound circuit, wherein, the device comprises long frame adjust modul...
18
200610157096
No distortion digital differential filtering method This invention provides a nondistorted digital filter method including setting a sampling frequency for sampling signals and difference step computing differences, which samples signals w...
Apparatus and method for tuning center frequency of a filter A tuning method, a tuning apparatus for tuning a filter and a trans-conductor circuit are disclosed. The tuning method includes: configuring the filter as a VCO; utilizing the VCO to gene...
21
200610162793
Stabilization circuit and multiband amplification circuit A stabilization circuit 100 which comprises: serial stabilization blocks 110, 120 connected in series, with respect to a signal to be amplified, with an amplification element; parallel st...
22
200610144872
High-order filter circuit The invention discloses a high-order filter circuit, comprising multichannel selecting unit, first bit width extension unit, first buffer storage unit, adder, shift arithmetic unit, secon...
23
200610144641
Electronic component An electronic component includes a substrate, and a capacitor unit on the substrate. The capacitor unit has a laminate structure including a first electrode layer provided on the substrat...
24
200610146539
Duplexer The present inventio provided a duplexer which includes a transmit filter of a ladder type filter, connected between a common terminal and a transmitting terminal, and a receive filter of...
25
200610148556
Electronic component and manufacturing method thereof The electronic component includes a base material, a capacitor unit, and a wiring portion. The capacitor unit has a stacked structure including a first electrode portion provided on the b...
26
200610143239
Acoustic resonator and filter element A bulk acoustic resonator has an acoustic reflector portion formed on a substrate and including one or more low acoustic impedance layers and one or more high acoustic impedance layers ha...
27
200610143694
Electronic component An electronic component includes a substrate, a capacitor, and a wiring. The capacitor has a multilayer structure including a first electrode film provided on the substrate, a second elec...
Piezoelectric thin-film resonator and filter The invention provides a piezoelectric thin-film resonator and filter. The piezoelectric thin-film resonator includes a lower electrode formed on a substrate to define a rounded dome-shap...
30
200610142790
Mesa-shaped piezoelectric resonator element A mesa-shaped piezoelectric resonator element including a resonator section having a thicker thickness than a peripheral section on the board surface of a piezoelectric substrate formed i...
Piezoelectric resonator and method for producing the same An upper electrode 103 is provided on one main surface of a piezoelectric layer 101, and a lower electrode 102 is provided on the other main surface thereof. A vibration section 104 is an...
36
200610137385
Complex RF device and method for manufacturing the same A complex RF device is provided which is composed of two RF circuits stacked vertically. The complex RF device comprises a substrate, a second RF circuit provided on the substrate, and a ...
37
200610132242
Phase adjustment circuit The invention provides a phase adjustment circuit including first to nth two-phase adjustment circuits. Each two-phase adjustment circuit includes a first logic circuit for performing log...
38
200610131796
Filter set and its efficiency improving method This is a means to improve the effect of filter sets. First, several input sample values and several output sample values appeared from the equation of filter sets are stored in order of ...
Composite filter chip A feasible filter chip can be achieved by restraining a possessive area of the filter chip in a device which adopting a plurality of the filter chips. A composite filter chip comprises a ...
Electronic circuit having transmission line type noise filter A power supply circuit produces a supply voltage to be supplied to a microprocessor which is an integrated circuit. A transmission line type noise filter includes a signal input terminal,...
43
200610149503
Transmitting arrangement and method for impedance matching A transmitting arrangement includes a matching circuit (20), a reference circuit (60) and a comparator (1). The output of the matching circuit (20) can be coupled to an antenna (5) and co...
Surge absorber A surge absorber comprises: a first terminal electrode, a second terminal electrode, a third terminal electrode, an inductor portion, a surge absorbing portion, and a resistor portion. Th...
47
200610139394
Surface acoustic wave device and fabrication method therefor The invention relates to a surface acoustic wave device and method for making same. The surface acoustic wave device includes a piezoelectric substrate, a surface acoustic wave element co...
Power conversion apparatus and method for fuel cell A power converting apparatus for a fuel cell, and a method thereof. The power converting apparatus for a fuel cell comprises: a converting unit for converting a DC voltage outputted from ...
50
200610062699
Detecting method and equipment for digital wave filter This invention relates to signal filter test method and device in signal process field, wherein the method comprises the following steps: a, generating one trigger signal when receiving t...
Surface acoustic wave device and manufacturing method thereof A surface acoustic wave device and its fabrication process are disclosed. To achieve a small and thin surface acoustic wave device. The surface acoustic wave device comprises a surface ac...
53
200610095089
Self-powered sensor The invention comprises a sensor and a self-powered device, the both above are connected each other. The self-powered device comprises a piezoelectric layer, a magnetostriction layer and ...
54
200610128699
Adjusted frequency temperature coefficient resonator A temperature compensated pair of resonators. The temperature compensated pair of resonators comprises a first resonator configured to resonate at a first frequency and having a first fre...
55
200610152109
Oscillatory circuit having two oscillators An oscillatory circuit. The oscillatory circuit includes a first oscillator, a second oscillator, and a mixer circuit. The first oscillator is configured to generate a first oscillating s...
Integrated electronic device and method of making the same An integrated electronic device includes a substrate, passive components, pads for external connection, and three-dimensional wiring. The passive components includes a multi-stage coil in...
59
200610121645
Quartz crystal vibrator, oscillator and electronic apparatus The invention provides a quartz crystal vibrator, an oscillator and an electronic apparatus capable of preventing a bonding electrode from being corroded and easily maintaining soundness ...
60
200610126546
Duplexer having matching circuit A duplexer includes a first filter connected to a common terminal, a second filter connected to the common terminal, an additional inductor connected between at least one of the first and...
Filter and antenna duplexer The invention provides a filter and an antenna branching filter which can be made compact or improved in degree of freedom of design. The filter is equipped with a first resonator, a seco...
64
200610053137
Resonator of quartz crystal The invention comprises a quartz crystal and two upper metal electrode and lower metal electrode which are located on the surface of said quartz crystal. Said upper metal crystal is a thi...
65
200610121614
Pulse generator, disk writer and tuner A pulse generator is provided for generating pulses with a selectable variable width and/or delay. The pulse generator comprises an oscillator and a selecting arrangement for selecting ho...
66
200610020040
Digital precision phase-shift method and phase shifter This invention discloses a method for precisely shifting phases and a phase-shifter, first of all, which cuts a HF input signal in a counter, which outputs a low frequency square wave sig...
67
200610121451
Circuit and method for filtering a radio frequency signal A circuit (1) for filtering a radio frequency signal at a given frequency comprises an input terminal (3), a filter device (5), and an active AC shunt circuit (7) having first (7a) and se...
Surface acoustic wave device and manufacturing method thereof A surface acoustic wave device includes an excitation electrode formed on a piezoelectric substrate and a binding electrode to be connected with a mounting substrate. The binding electrod...
70
200610115410
Duplexer and ladder type filter The invention provides a duplexer and ladder type filter capable of reducing a loss, increasing an attenuation amount and being small-sized. A duplexer includes an antenna terminal, a fir...
71
200610110960
Signal splitter A signal splitter (24) comprising an input (26) and a plurality of outputs (28,30) is provided, wherein alternate outputs (28) are connected to phase shifting devices (32). The phase shif...
Surge absorption element and surge absorption circuit An object of the present invention is to provide a small surge absorption element that exhibits superior impedance matching even for high-speed signals and a surge absorption circuit. The...
74
200610108957
Resonant circuit, filter, and antenna duplexer There is provided a resonant circuit that includes a resonator, an inductor connected in parallel with the resonator, and a capacitor connected in parallel with the resonator. There are a...
Semiconductor device and oscillator Provided is a semiconductor device, which has high Q value and a good characterics of the phase noise. A semiconductor device includes a semiconductor substrate including an active elemen...
78
200610143150
Method and apparatus to emulate a filter using digital elements A system, apparatus, method and article to emulate a filter using digital elements are described. The apparatus may include a digital-to-analog converter (110, 500) having an impulse resp...
79
200610107707
Surface acoustic wave device A SAW device comprises a single crystal piezo-electric strate (made, for example, of LiTaO
80
200610105793
Impedance adjusting circuit and method To adjust the impedance of an output buffer in a DDR2 memory through the use of an OCD impedance adjusting function from the side of a memory controller. An impedance adjusting circuit co...
Signal compensation method of passive signal isolator This invention discloses a signal compensation method for passive signal isolators, which adds a compensation transformer in the passive signal isolator circuit, in which, the primary of ...
Surge absorber A surge absorber has a first terminal electrode, a second terminal electrode, a third terminal electrode, an inductor portion, a surge absorbing portion, and a capacitor portion. The indu...
86
200610100270
Method for manufacturing a piezoelectric vibration device A method of manufacturing a piezoelectric vibrating device. The object of the invention is to provide a method of manufacturing a piezoelectric vibrating device which is capable of improv...
87
200610086885
Tuning circuit
The present invention relates to a filter and, more particularly, to a tuning circuit of a filter for correcting a cut-off frequency of the filter. The tuning circuit comprises a current...
88
200610093517
Surge absorption circuit
A surge absorption circuit in accordance with an embodiment comprises: a pair of input terminals; a pair of output terminals; a first inductor device connecting one of the pair of input ...
89
200610099799
Quartz resonator reed, quartz resonator, and quartz oscillator The invention provides a small crystal oscillating piece for requiring large driving power by reducing the amount of frequency variation by DLD, a crystal oscillator using the oscillating...
Suspended device and method of making A substrate defining a cavity comprising a wide, shallow first portion and a narrow, deep second portion is provided. The first portion of the cavity extends into the substrate from the f...
Signal processing device
A signal processing device is provided. A signal processing device includes: a diplexer unit separating a first signal from signals that are received from an antenna to transmit the firs...
95
200610087989
Small-sized piezoelectric resonator
The piezoelectric resonator (10) according to the invention includes a tuning fork shaped part with two parallel vibrating arms (12, 14), connected to each other by a linking part (16), ...
96
200610085980
General programmable digital filter and its working method
The invention discloses a general purpose programmable digit filter and working method, which is characterized by the following: the invention is composed of 9 functional modulars; the w...
97
200610083574
Cascade integral comb filter This invention relates to a cascade integral comb filter, comprising integral module, extract module and comb module, and place inside data port and synchronous signal port; the said sync...
Small-sized piezoelectric resonator
The piezoelectric resonator (10) according to the invention includes a tuning fork shaped part with two parallel vibrating arms (12, 14), connected to each other by a linking part (16), ...
