Composite electronic component and frequency adjustment method of the same

A method of adjusting the frequency of a composite electronic component comprising:

• a component body including
• a laminated body obtained by laminating a plurality of non-conductive layers,
• an inductor electrode formed between a first pair of adjacent non-conductive layers of the above laminated body,
• a capacitor electrode formed between a second pair of adjacent non-conductive layers of the above laminated body different from said first pair,
• two shield electrodes formed on both surfaces of the laminated body,
• a frequency adjusting capacitor electrode which is formed outside at least one of the shield electrodes through a non-conductive layer and has a smaller area than the capacitor electrode, and
• a non-conductive protect layer, formed of a non-malleable material, for covering an outer surface of the frequency adjusting capacitor electrode;
• wherein the capacitor electrode and the frequency adjusting capacitor electrode are electrically connected to each other, whereby a first capacitor obtained between the capacitor electrode and the shield electrode opposed thereto and a second capacitor obtained between either one of the shield electrodes and the frequency adjusting capacitor electrode are electrically connected in parallel, and
• wherein one end of the inductor electrode is connected to the capacitor electrode and the other end of the inductor electrode is connected to the shield electrodes,
• said method comprising a step of trimming the frequency adjusting capacitor electrode along with the non-conductive protect layer.

A composite electronic component containing at least two circuit elements including an inductor, said composite electronic component comprising:

• a component body including
• a laminated body obtained by laminating a plurality of non-conductive layers,
• an inductor electrode formed between a first pair of adjacent non-conductive layers of the above laminated body,
• a capacitor electrode formed between a second pair of adjacent non-conductive layers of the above laminated body different from said first pair,
• a second capacitor electrode, formed between either two adjacent non-conductive layers of the above laminated body, for adjusting the frequency, the second capacitor electrode having a smaller area than the first capacitor electrode,
• two shield electrodes respectively formed on both surfaces of the laminated body, and
• a non-conductive protect layer, formed of a non-malleable layer, for covering an outer surface of at least one of the shield electrodes;
• and
• at least two connecting electrodes including a first connecting electrode connecting the first capacitor electrode to the second capacitor electrode and a second connecting electrode connecting the two shield electrodes to each other,
• wherein the first capacitor electrode is opposed to one shield electrode to constitute a first capacitor therebetween and the second capacitor electrode is opposed to the other shield electrode to constitute a second capacitor therebetween, and
• wherein a portion of the above other shield electrode opposed to the second capacitor electrode has an area which is to be trimmed with the non-conductive layer for frequency adjusting.

A method of adjusting the frequency of a composite electronic component comprising:

• a component body including
• a laminated body obtained by laminating a plurality of non-conductive layers,
• an inductor electrode formed between either two adjacent non-conductive layers of the above laminated body,
• a first capacitor electrode formed between another two adjacent non-conductive layers of the above laminated body,
• a second capacitor electrode formed between either two adjacent non-conductive layers of the above laminated body, the second capacitor electrode having a smaller area than the first capacitor electrode,
• two shield electrodes formed on both surfaces of the laminated body, and
• a non-conductive protect layer, formed of a non-malleable material, for covering an outer surface of at least one of the shield electrodes;
• and
• at least two connecting electrodes including a first connecting electrode connecting the first capacitor electrode to the second capacitor electrode and a second connecting electrode connecting the two shield electrodes to each other,
• said method comprising a step of trimming a portion of the shield electrode opposed to the second capacitor electrode along with the non-conductive protect layer.

A composite electronic component equivalently provided with a bandpass filter circuit, said composite electronic component comprising:

• a component body including
• a laminated body of a plurality of non-conductive layers,
• a first pair of shield electrodes formed between a first non-conductive layer and a second nonconductive layer of the laminated body,
• a magnetically coupled pair of inductor electrodes formed between the second non-conductive layer and a third non-conductive layer of the laminated body,
• a first pair of capacitor electrodes formed between the third non-conductive layer and a fourth non-conductive layer of the laminated body,
• a second pair of shield electrodes formed between the fourth non-conductive layer and a fifth nonconductive layer of the laminated body, and
• a second pair of capacitor electrodes, formed between the fifth non-conductive layer and a sixth non-conductive layer of the laminated body, for adjusting a frequency, each of the second pair of capacitor electrodes having a smaller area than each of the first pair of capacitor electrodes and the sixth non-conductive layer being formed of a nonmalleable material;
• a first connecting electrode connecting one of the first pair of capacitor electrodes, one of the second pair of capacitor electrodes and one end of one inductor electrode, the above electrodes connected to the first connecting electrode being accumulated vertically;
• a second connecting electrode connecting one of the first pair of shield electrodes, one of the second pair of shield electrodes and the other end of the above inductor electrode, the above electrodes connected to the second connecting electrode being accumulated vertically;
• a third connecting electrode connecting the other of the first pair of capacitor electrodes, the other of the second pair of capacitor electrodes and one end of the other inductor electrode;
• and
• a fourth connecting electrode connecting the other of the first pair of shield electrodes, the other of the second pair of shield electrodes and the other end of the above other inductor electrode,
• wherein the electrodes connected to said first and second connecting electrodes equivalently constitute a first LC resonant circuit and the electrodes connected to said third and fourth connecting electrodes equivalently constitute a second LC resonant circuit, said first LC resonant circuit and said second LC resonant circuit being magnetically coupled with each other by the pair of inductor electrodes to constitute a bandpass filter, and
• wherein the frequency of said bandpass filter is adjusted by trimming the second pair of capacitor electrodes along with the sixth non-conductive layer.

A method of adjusting the frequency of a composite electronic component equivalently provided with a bandpass filter circuit, said composite electronic component comprising:

• a component body including
• a laminated body of a plurality of non-conductive layers,
• a fist pair of shield electrodes formed between a first non-conductive layer and a second nonconductive layer of the laminated body,
• a magnetically coupled pair of inductor electrodes formed between the second non-conductive layer and a third non-conductive layer of the laminated body,
• a first pair of capacitor electrodes formed between the third non-conductive layer and a fourth non-conductive layer of the laminated body,
• a second pair of shield electrodes formed between the fourth non-conductive layer and a fifth nonconductive layer of the laminated body, and
• a second pair of capacitor electrodes, formed between the fifth non-conductive layer and a sixth non-conductive layer of the laminated body, for adjusting a frequency, each of the second pair of capacitor electrodes having a smaller area than each of the first pair of capacitor electrodes and the sixth non-conductive layer being formed of a nonmalleable material;
• a first connecting electrode connecting one of the first pair of capacitor electrodes, one of the second pair of capacitor electrodes and one end of one inductor electrodes, the above electrodes connected to the first connecting electrode being accumulated vertically;
• a second connecting electrode connecting one of the first pair of shield electrodes, one of the second pair of shield electrodes and the other end of the above inductor electrode, the above electrodes connected to the second connecting electrode being accumulated vertically;
• a third connecting electrode connecting the other of the first pair of capacitor electrodes, the other of the second pair of capacitor electrodes and one end of the other inductor electrode;
• and
• a fourth connecting electrode connecting the other of the first pair of shield electrodes, the other of the second pair of shield electrodes and the other end of the above other inductor electrode,
• said method comprising a step of trimming the second pair of capacitor electrodes along with the sixth non-conductive layer.