JP6524486B2 - Power distribution and synthesis circuit - Google Patents

Description

  The present invention relates to a power distribution and combination circuit for distributing power of signals in a plurality of frequency bands.

  In recent years, high frequency communication devices such as mobile phones and wireless LANs have been rapidly spreading. In these high-frequency communication devices, the tightness of frequency resources has become a problem with the rapid increase in the number of users. Therefore, in the cellular phone network in which only the 800 MHz band was originally used, the 1.5 GHz band and the 2 GHz band are assigned and used as new frequency bands, and only the 2.4 GHz band is initially used. In the wireless LAN, the 5 GHz band is allocated as a new frequency band.

  Under such circumstances, it is required to cope with a plurality of allocated frequency bands for a high frequency communication apparatus to which a plurality of frequency bands are allocated, such as a cellular phone and a wireless LAN apparatus. That is, one mobile phone is required to be able to communicate in either the 800 MHz band or 2 GHz band, and one wireless LAN device is required to be able to communicate in either the 2.4 GHz band or 5 GHz band. .

  As described above, the conventional power distribution / combination circuit used in a communication apparatus capable of handling two frequency bands is constituted by three input / output terminals, a transmission line, an isolation resistor, and a parallel resonance circuit or a series resonance circuit. Ru. Thus, the power distribution / combination circuit is operated in the first frequency band and the second frequency band (see, for example, Non-Patent Document 1 and Non-Patent Document 2).

  By the way, in the conventional power distribution and synthesis circuit, since the transmission line is used for the power distribution and synthesis circuit, there is a problem that the circuit area becomes large particularly in the circuit for the low frequency band. In order to solve such problems, a power distribution / combination circuit has been proposed in which a small circuit is configured by a series-parallel resonant circuit and an isolation resistor and that operates in two different frequency bands (for example, Patent Document 1) And Non-Patent Document 3). In Non-Patent Document 5, the same method as in Patent Document 1 is applied to the broadband power distribution / combination circuit composed of lumped elements disclosed in Patent Document 2 and Non-Patent Document 4, and With isolation resistors, power dividers are disclosed which operate in two different frequency bands.

Patent No. 4762920 Patent No. 3795295 gazette

L. Wu, Z. Sun, H. Yilmaz, and M. Berroth, "A dual-frequency Wilkinson power divider," IEEE Trans. Microwave Theory Tech. , Vol. 54, pp. 278-284, January 2006 Masashi Kawai, Yasutoshi Nakajima, Yoshihiro Kokubo, Isao Ota, Atsushi Yamazaki, "Design method of two-frequency band Wilkinson power distribution and synthesis circuit using LC series resonant circuit," 2006 IEICE Electronics Society Conference, C-2- 44, 2006. Atsushi Oshima, Toru Fukasawa, Masataka Otsuka, Hiroaki Miyashita, "Configuration and design formula of lumped constant type dual-frequency Wilkinson distribution circuit," Technical Report of IEICE, MW 2009-87, pp. 79-82, 2009 H. Hayashi, T .; Nakagawa, K. Uehara, and Y. Takigawa, "Miniaturized broadband lumped-element in-phase power dividers," IEICE Trans. Electronics, vol. E90-C, pp. 1222-1227, June 2007 Hiroyuki Mizuno, Tadashi Kawai, Isamu Ota, Atsushi Shinohara, "Design Method of Lumped Constant Two-Frequency Band Wilkinson Power Divider Using Frequency Conversion," Technical Report of IEICE, MW 2010-21, pp. 39-43, 2010

  In the conventional wireless communication line, it was assumed to use two different frequency bands. Therefore, the conventional power distribution and combining circuit has a configuration to operate in two different frequency bands.

  However, in recent years, with the increase in data capacity transmitted using a wireless communication channel and the increase in wireless communication devices, the frequency band is insufficient, and further multiband formation is required. As a result, wireless communication devices are required to communicate using more frequency bands, that is, three or more different frequency bands.

  The present invention has been made to solve the problems as described above, and a power distribution / combination circuit is configured in a small circuit by series-parallel resonant circuits and isolation resistors and operates in three or more different frequency bands. Intended to be provided.

In the first aspect of the present invention, the second connection connected to the second input / output terminal is connected to the first connection connected to the first input / output terminal and connected to the second input / output terminal. One end is connected to a first series resonance circuit having a plurality of series resonance circuits connected in parallel with each other, and the first connection portion connected to the first input / output terminal. A capacitor and an inductor including the plurality of series resonance circuits included in the first series resonance circuit, the other end being connected to the third connection portion connected to the third input / output terminal, and A second series resonant circuit including a plurality of series resonant circuits connected in parallel with each other and including capacitors and inductors of the same value, and one end connected to the second connection portion and the other end grounded And connected in series with each other A first parallel resonant circuit having a plurality of parallel resonant circuits, and a capacitor and an inductor which one end is connected to the third connection portion and the other end is grounded, and the first parallel resonant circuit includes A second parallel resonant circuit including a plurality of parallel resonant circuits connected in series and including capacitors and inductors of the same value, and one end connected to the first connection portion and the other end grounded And a plurality of capacitors connected in series with each other, including a capacitor having twice the value of the capacitor included in the first parallel resonant circuit and an inductor having a half value of the inductor included in the first parallel resonant circuit. A third parallel resonant circuit having a parallel resonant circuit, and an isolation resistor connected between the second connection portion and the third connection portion, wherein a near frequency of a desired first frequency band is provided from f ₁ and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), is coupled to the first output terminal, said second input terminal and the third output terminal Using the load impedance Z ₀ (real number), according to the following equation, the capacitor value C _2k-1 (k is a natural number, n-1 2 2k-1) of the first series resonant circuit and the inductor value L _{2k- 1} (k is a natural number, n-1 2 2k-1), the capacitor value C _2k (k is a natural number, n 2 2k) of the first parallel resonant circuit, and the inductor value L _2k (k is a natural number, n ≧ A power distribution and synthesis circuit is characterized in that 2k) and a value R ₁ of the isolation resistance are determined.

  In a second aspect of the present invention, in the power distribution / combination circuit according to the first aspect, any one of the plurality of series resonant circuits included in the first series resonant circuit is a capacitor or an inductor. And any one series resonant circuit among the plurality of series resonant circuits included in the second series resonant circuit has one of a capacitor and an inductor, and the first series resonant circuit includes any one of the plurality of series resonant circuits. Any one parallel resonant circuit among the plurality of parallel resonant circuits included in the first parallel resonant circuit does not have the same element as an element not included in any one series resonant circuit. Or the inductor does not have an element different from an element not included in any one series resonant circuit included in the first series resonant circuit, and the second parallel resonant circuit Among the plurality of parallel resonant circuits, any one of the parallel resonant circuits has an element different from an element of any one of the capacitors or inductors that the first series resonant circuit does not have. And any one of the parallel resonance circuits among the plurality of parallel resonance circuits included in the third parallel resonance circuit is any one series resonance among capacitors or inductors included in the first series resonance circuit. Provided is a power distribution / combination circuit characterized in that it does not have an element different from an element which the circuit does not have.

In the third aspect of the present invention, the second connection connected to the second input / output terminal is connected to the first connection connected to the first input / output terminal and connected to the second input / output terminal. The other end is connected, and one end is connected to the first connection portion connected to the first input / output terminal, and the first parallel resonance circuit having a plurality of parallel resonance circuits connected in series with each other And a capacitor and an inductor, the other end of which is connected to the third connection connected to the third input / output terminal, and the plurality of parallel resonance circuits included in the first parallel resonance circuit. A second parallel resonant circuit including a plurality of parallel resonant circuits connected in series and including capacitors and inductors of the same value, and one end connected to the second connection portion and the other end being grounded Connected in parallel with each other A first series resonance circuit having a plurality of series resonance circuits, and a capacitor and an inductor which one end is connected to the third connection portion and the other end is grounded, and the first series resonance circuit includes A second series resonant circuit including a plurality of series resonant circuits connected in parallel with each other and including capacitors and inductors of the same value, and one end connected to the first connection portion and the other end grounded And a plurality of capacitors connected in parallel with each other, including a capacitor having a value twice that of the capacitor included in the first series resonant circuit and an inductor having a half value of the inductor included in the first series resonant circuit. A third series resonant circuit having a series resonant circuit, and an isolation resistor connected between the second connection portion and the third connection portion, wherein a near frequency of a desired first frequency band is provided from f ₁ and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), is coupled to the first output terminal, said second input terminal and the third output terminal Using the load impedance Z ₀ (real number), according to the following equation, the capacitor value C _2k-1 (k is a natural number, n-1 2 2k-1) of the first parallel resonant circuit and the inductor value L _{2k- 1} (k is a natural number, n-1 2 2k-1), the capacitor value C _2k (k is a natural number, n 2 2k) of the first series resonant circuit, and the inductor value L _2k (k is a natural number, n ≧ A power distribution and synthesis circuit is characterized in that 2k) and a value R ₁ of the isolation resistance are determined.

  In a fourth aspect of the present invention, in the power distribution / combination circuit according to the third aspect, any one parallel resonant circuit among the plurality of parallel resonant circuits included in the first parallel resonant circuit is a capacitor or an inductor And any one of the plurality of parallel resonant circuits included in the second parallel resonant circuit does not have any one of the plurality of parallel resonant circuits includes either the capacitor or the inductor. Any one of the plurality of series resonant circuits included in the first series resonant circuit does not have the same element as any one of the parallel resonant circuits does not have, and any one of the plurality of series resonant circuits is a capacitor Or the inductor does not have an element different from an element not included in any one of the parallel resonant circuits included in the first parallel resonant circuit, and the second series resonant circuit Among the plurality of series resonant circuits, any one series resonant circuit has an element different from an element not included in any one parallel resonant circuit of the first parallel resonant circuit among capacitors or inductors. And any one series resonance circuit among the plurality of series resonance circuits included in the third series resonance circuit is any one parallel resonance included in the capacitor or the inductor among the first parallel resonance circuits. Provided is a power distribution / combination circuit characterized in that it does not have an element different from an element which the circuit does not have.

In a fifth aspect of the present invention, the second connection connected to the second input / output terminal is connected to the first connection connected to the first input / output terminal and connected to the second input / output terminal. One end is connected to a first series resonance circuit having a plurality of series resonance circuits connected in parallel with each other, and the first connection portion connected to the first input / output terminal. A capacitor and an inductor including the plurality of series resonance circuits included in the first series resonance circuit, the other end being connected to the third connection portion connected to the third input / output terminal, and A second series resonant circuit comprising a plurality of series resonant circuits connected in parallel with each other, including capacitors and inductors of the same value, and an isolation connected between the second connection and the third connection. Resistance and the second connection A first parallel resonant circuit including a plurality of parallel resonant circuits connected in series with the isolation resistor and connected in series with each other between the third connection portions, and the first connection portion A plurality of parallel resonant circuits connected in series, each of which includes one end connected and the other end grounded, and a capacitor and an inductor of the same value as the capacitor and the inductor included in the first parallel resonant circuit. a second parallel resonant circuit, comprising a, from the vicinity frequency f ₁ of the desired first frequency band and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), the first input-output Using the load impedance Z ₀ (real number) connected to the terminal, the second input / output terminal and the third input / output terminal, the value C _{2k −} of the capacitor of the first series resonant circuit is given by ₁ (k is a natural number, n-1 2 2k-1) and the inductor value L _2k-1 (k is a natural number, n-1 2 2k-1), and the capacitor value C _2k (of the first parallel resonant circuit) k is a natural number, n 回路 2k) and inductor value L _2k (k is a natural number, n ≧ 2k), and isolation resistor value R ₁ are defined.

  In a sixth aspect of the present invention, in the power distribution / combination circuit according to the fifth aspect, any one of the plurality of series resonant circuits included in the first series resonant circuit is a capacitor or an inductor. Any one of the plurality of series resonant circuits which the second series resonant circuit does not have any one of, any one of the plurality of series resonant circuits includes any one of a capacitor and an inductor and any one of the first series resonant circuit Or one of the parallel resonant circuits among the plurality of parallel resonant circuits which the first parallel resonant circuit does not have the same element as an element that the one series resonant circuit does not have, a capacitor or The inductor does not have any element different from the element which is not included in any one series resonant circuit included in the first series resonant circuit, and the second parallel resonant circuit Among the plurality of parallel resonant circuits, any one of the parallel resonant circuits has an element different from an element of any one of the capacitors or the inductors which the first series resonant circuit does not have. To provide a power distribution and synthesis circuit characterized in that

In the seventh aspect of the present invention, the second connection connected to the second input / output terminal is connected to the first connection connected to the first input / output terminal and connected to the second input / output terminal. The other end is connected, and one end is connected to the first connection portion connected to the first input / output terminal, and the first parallel resonance circuit having a plurality of parallel resonance circuits connected in series with each other And a capacitor and an inductor, the other end of which is connected to the third connection connected to the third input / output terminal, and the plurality of parallel resonance circuits included in the first parallel resonance circuit. A second parallel resonant circuit comprising a plurality of parallel resonant circuits connected in series and including capacitors and inductors of the same value, and an isolation connected between the second connection and the third connection. Resistance and the second connection A first series resonant circuit comprising a plurality of series resonant circuits connected in series with the isolation resistor and connected in parallel with each other between the third connection portions, and the first connection portion A plurality of series resonant circuits connected in parallel to each other, including one end connected and the other end grounded, and a capacitor and an inductor of the same value as the capacitor and the inductor included in the first series resonant circuit. a second series resonant circuit, comprising a, from the vicinity frequency f ₁ of the desired first frequency band and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), the first input-output Using the load impedance Z ₀ (real number) connected to the terminal, the second input / output terminal and the third input / output terminal, the value C _{2k −} of the capacitor of the first parallel resonant circuit is given by ₁ (k is a natural number, n-1 2 2k-1) and the inductor value L _2k-1 (k is a natural number, n-1 2 2k-1), and the capacitor value C _2k (of the first series resonant circuit) k is a natural number, n 回路 2k) and inductor value L _2k (k is a natural number, n ≧ 2k), and isolation resistor value R ₁ are defined.

  In an eighth aspect of the present invention, in the power distribution / combination circuit according to the seventh aspect, any one parallel resonant circuit among the plurality of parallel resonant circuits included in the first parallel resonant circuit is a capacitor or an inductor And any one of the plurality of parallel resonant circuits included in the second parallel resonant circuit does not have any one of the plurality of parallel resonant circuits includes either the capacitor or the inductor. Any one of the plurality of series resonant circuits included in the first series resonant circuit does not have the same element as any one of the parallel resonant circuits does not have, and any one of the plurality of series resonant circuits is a capacitor Or the inductor does not have an element different from an element not included in any one of the parallel resonant circuits included in the first parallel resonant circuit, and the second series resonant circuit Among the plurality of series resonant circuits, any one series resonant circuit has an element different from an element not included in any one parallel resonant circuit of the first parallel resonant circuit among capacitors or inductors. To provide a power distribution and synthesis circuit characterized in that

  In each of the power distribution and synthesis circuits described above, for example, the capacitor, the inductor, and the isolation resistor are chip components, and the chip components are disposed on the dielectric substrate and a strip conductor formed on the dielectric substrate. Connected by pattern.

  According to the present invention, it is possible to provide a power distribution / combining circuit in which a small circuit is configured by a series parallel resonant circuit and an isolation resistor and which operates in three or more different frequency bands.

FIG. 1 is a circuit diagram showing a configuration of a power distribution synthesis circuit 10 according to a first embodiment. FIG. 5 is a diagram showing frequency characteristics of S parameters (S21) of the power distribution and combining circuit 10. FIG. 5 is a diagram showing frequency characteristics of S parameters (S11, S22) of the power distribution and combining circuit 10. FIG. 5 is a diagram showing frequency characteristics of S parameters (S32) of the power distribution and combining circuit 10. It is a circuit diagram showing composition of electric power distribution synthetic circuit 20 concerning a 2nd embodiment. FIG. 5 is a diagram showing frequency characteristics of S parameters (S21) of the power distribution and combining circuit 20. FIG. 6 is a diagram showing frequency characteristics of S parameters (S11, S22) of the power distribution and combining circuit 20. FIG. 7 is a diagram showing frequency characteristics of S parameters (S32) of the power distribution and combining circuit 20. It is a circuit diagram showing composition of electric power distribution synthetic circuit 30 concerning a 3rd embodiment. It is a figure which shows the frequency characteristic of S parameter (S21) of the electric power distribution synthetic | combination circuit 30. FIG. It is a figure which shows the frequency characteristic of S parameter (S11, S22) of the electric power distribution synthetic | combination circuit 30. FIG. FIG. 7 is a diagram showing frequency characteristics of S parameters (S32) of the power distribution and combining circuit 30. It is a circuit diagram which shows the structure of the electric power distribution synthetic | combination circuit 40 which concerns on 4th Embodiment. FIG. 5 is a diagram showing frequency characteristics of S parameters (S21) of the power distribution and combining circuit 40. It is a figure which shows the frequency characteristic of S parameter (S11, S22) of the electric power distribution synthetic | combination circuit 40. FIG. FIG. 5 is a diagram showing frequency characteristics of S parameters (S32) of the power distribution and combining circuit 40. It is a circuit diagram showing the composition of power distribution synthetic circuit 50 concerning a 5th embodiment. FIG. 7 is a diagram showing frequency characteristics of S parameters (S21) of the power distribution and combining circuit 50. It is a figure which shows the frequency characteristic of S parameter (S11, S22) of the electric power distribution synthetic | combination circuit 50. FIG. FIG. 5 is a diagram showing frequency characteristics of S parameters (S32) of the power distribution and combining circuit 50. FIG. 18 is a circuit diagram showing a configuration of a power distribution and combining circuit 60 according to a sixth embodiment. It is a circuit diagram which shows the structure of the electric power distribution synthetic | combination circuit 70 which concerns on 7th Embodiment. FIG. 21 is a circuit diagram showing a configuration of a power distribution synthesis circuit 80 according to an eighth embodiment.

First Embodiment
FIG. 1 is a circuit diagram showing a configuration of a power distribution and combining circuit 10 according to the first embodiment. The power distribution and combination circuit 10 shown in FIG. 1 corresponds to the case of n = 6 in the power distribution and combination circuit according to claim 1.

  The power distribution synthesis circuit 10 has a first input / output terminal 1, a second input / output terminal 2, and a third input / output terminal 3. In addition, the power distribution synthesis circuit 10 is configured to isolate the first series resonance circuit 11, the second series resonance circuit 12, the first parallel resonance circuit 13, the second parallel resonance circuit 14, the third parallel resonance circuit 15, and the like. And a resistance 16. The high frequency signal input from the first input / output terminal 1 is distributed to the second input / output terminal 2 and the third input / output terminal 3. Further, the high frequency signals input from the second input / output terminal 2 and the third input / output terminal 3 are synthesized in phase and output from the first input / output terminal 1.

The first series resonance circuit 11 has a first connection portion 4 connected to the first input / output terminal 1 and a second connection portion connected to the second input / output terminal 2. The other end is connected to 5. The first series resonant circuit 11 has a plurality of series resonant circuits connected in parallel with one another. More specifically, the first series resonant circuit 11, inductor L ₁ and a series resonant circuit capacitor C ₁ are connected in series, the inductor L ₃ and the series resonant circuit capacitor C ₃ are connected in series, and the inductor L ₅ and a capacitor C ₅ have a series resonant circuit connected in series.

The second series resonant circuit 12 has a third connection connected to the third input / output terminal 3 while having one end connected to the first connection 4 connected to the first input / output terminal 1 The other end is connected to 6. The second series resonant circuit 12 has a plurality of series resonant circuits having the same capacitance and inductance as the plurality of series resonant circuits included in the first series resonant circuit 11. Specifically, the second series resonant circuit 12, like the first series resonant circuit 11, series resonant circuit inductor L ₁ and capacitor C ₁ are connected in series, the inductor L ₃ and capacitor C ₃ are in series connected series resonant circuit, and the inductor L ₅ and the capacitor C ₅ has a series resonant circuit connected in series.

The first parallel resonant circuit 13 has one end connected to the second connection portion 5 and the other end grounded. The first parallel resonant circuit 13 has a plurality of parallel resonant circuits connected in series with each other. More specifically, the first parallel resonant circuit 13, a parallel resonant circuit inductor L ₂ and capacitor C ₂ are connected in parallel, the inductor L ₄ and the parallel resonant circuit capacitor C ₄ are connected in parallel, and an inductor L ₆ and a capacitor C ₆ have a parallel resonant circuit connected in parallel.

The second parallel resonant circuit 14 has one end connected to the third connection portion 6 and the other end grounded. The second parallel resonant circuits 14 are connected in series to each other, and have a plurality of parallel resonant circuits having the same capacitance and inductance as the first parallel resonant circuit 13. Specifically, the second parallel resonant circuit 14, a parallel resonant circuit inductor L ₂ and capacitor C ₂ are connected in parallel, the inductor L ₄ and the parallel resonant circuit capacitor C ₄ are connected in parallel, and an inductor L ₆ and a capacitor C ₆ have a parallel resonant circuit connected in parallel.

The third parallel resonant circuit 15 has one end connected to the first connection portion 4 and the other end grounded. In the third parallel resonant circuit 15, a capacitor having a capacitance value twice that of the capacitors included in the plurality of parallel resonant circuits included in the first parallel resonant circuit 13 and a plurality of parallel resonant circuits included in the first parallel resonant circuit 13 A plurality of parallel resonant circuits each having an inductor whose inductance value is half of that of the inductors connected in series are connected in series. Specifically, the third parallel resonant circuit 15, inductor 0.5 L ₂ and parallel resonant circuit capacitor 2C ₂ are connected in parallel, the inductor 0.5 L ₄ and parallel resonant circuit capacitor 2C ₄ are connected in parallel , and inductors 0.5 L ₆ and the capacitor 2C ₆ has a parallel resonance circuit connected in parallel.

The capacitors 2C ₂ , 2C ₄ and 2C ₆ are shown to be capacitors having capacitance values twice those of the capacitors C ₂ , C ₄ and C ₆ , respectively. The inductors 0.5L ₂ , 0.5L ₄ and 0.5L ₆ are shown to be inductors having inductance values of 1/2 of the inductors L ₂ , L ₄ and L ₆ , respectively.

  The isolation resistor 16 is connected in series between the second connection 5 and the third connection 6. The isolation resistor 16 is a resistor for electrically insulating between the second input / output terminal 2 and the third input / output terminal 3.

The value of each element included in the power distribution and synthesis circuit 10 is a value determined as follows.
First, the power distribution / combination circuit 10 is operated to set the frequency band to be the passband from the first frequency band to the nth frequency band (n is an even number of 4 or more), and the frequency near the first frequency band is f ₁ The frequency near the frequency band is f _n . The load impedance connected to the first input / output terminal 1, the second input / output terminal 2 and the third input / output terminal 3 is assumed to be Z ₀ (real number).

  Here, “nearby frequency” in the present specification is a frequency in a range closer to the own frequency band than the adjacent frequency band. For example, if the first frequency band is 2 GHz to 3 GHz, the second frequency band is 4 GHz to 5 GHz, and the third frequency band is 6 GHz to 7 GHz, the near frequency of the second frequency band is It is included between 3 GHz and 6 GHz.

In this case, the capacitance C _2k-1 (k is a natural number, n-1 2 2k-1) of the capacitor included in each series resonant circuit of the first series resonant circuit 11 and the inductance L _2k-1 (k is a natural number) of each inductor , N−1 ≧ 2k−1), capacitance C _2k (k is a natural number, n 2 2k) of each capacitor included in each parallel resonant circuit of the first parallel resonant circuit 13, and inductance L _2k (k is a natural number, n ≧ 2 k) and the isolation resistance R ₁ are determined by the following equations.

Next, the operation of the power distribution and synthesis circuit 10 will be described. Power distribution and synthesis circuit 10 operates in different first, second, third, fourth, fifth and sixth frequency bands. Let the near frequencies be f ₁ , f ₂ , f ₃ , f ₄ , f ₅ and f ₆ . Capacitance value of a capacitor included in the power distribution and synthesis circuit 10 for operating as the power distribution and synthesis circuit 10 in a frequency band including the frequencies f ₁ , f ₂ , f ₃ , f ₄ , f ₅ and f ₆ , inductance of the inductor Values and resistance values of the resistors are given by equations (1.1) to (1.5).

Here, for convenience of description, it is assumed that the value of the load impedance Z ₀ (real number) connected to the input and output terminals 1, 2, and 3 is 50Ω. Further, the near frequency f1 of the _first frequency band is 0.9 GHz, the near frequency f2 of the _second frequency band is 2 GHz, the near frequency f3 of the _third frequency band is 3.4 GHz, and the fourth frequency band the neighborhood frequency _{f 4} 5.8 GHz, selects a neighborhood frequency _{f 5} of the fifth frequency band 6 GHz, the vicinity of the frequency _{f 6} of the frequency band of the 6 to 8GHz of. The symbols in the figure are not described as f ₁ , f ₂ , f ₃ , f ₄ , f ₅ , f ₆ , but as m ₁ , m ₂ , m ₃ , m ₄ , m ₅ , m ₆ respectively. There is.

  FIGS. 2 to 4 are diagrams showing frequency characteristics (calculated values) of S parameters of the power distribution / combination circuit 10 in which constants of respective elements are determined based on the above conditions. The arrows in FIGS. 2 to 4 indicate the center frequency F1 of the first frequency band, the center frequency F2 of the second frequency band, the center frequency F3 of the third frequency band, the center frequency F4 of the fourth frequency band, and A center frequency F5 of the fifth frequency band and a center frequency F6 of the sixth frequency band are shown.

  In FIG. 2, the horizontal axis represents the frequency, and the vertical axis represents the magnitude of the high frequency signal distributed to the input / output terminal 2 and the input / output terminal 3 when the high frequency signal is input from the input / output terminal 1, that is, the distribution amplitude | S21 | (= | S31 |) is shown. Since the high frequency signal input from the input / output terminal 1 is distributed to the input / output terminal 2 and the input / output terminal 3, the size of S21 is about -3 dB. From the frequency characteristics of S21 shown in FIG. 2, the high frequency signal input from the input / output terminal 1 is equally distributed to the input / output terminals 2 and 3 without reflection in the first frequency band F1 to the sixth frequency band F6. It can be seen that it is transmitted.

  FIG. 3 shows magnitudes of reflection coefficients when high frequency signals are input from the input / output terminals 1, 2, 3; that is, reflection amplitudes | S11 |, | S22 | (= | S33 |). At all frequencies of F1 to F6, the values of S11 and S22 are sufficiently small, and it can be confirmed that no reflection occurs.

  FIG. 4 shows the magnitude of the high frequency signal transmitted to the input / output terminal 3 when the high frequency signal is input from the input / output terminal 2 and the magnitude to the input / output terminal 2 when the high frequency signal is input from the input / output terminal 3. Of the high frequency signal, that is, isolation | S32 | (= | S23 |). At all frequencies of F1 to F6, the value of S32 is small, and it can be confirmed that the input / output terminal 2 and the input / output terminal 3 can be completely isolated. Therefore, even if a mismatch occurs with a load such as an antenna connected to the input / output terminals 2 and 3 and a reflected wave is generated, the reflected waves are transmitted to the terminals of the input / output terminals 2 and 3. It operates as a stable power distribution and synthesis circuit without being transmitted.

  In such a power distribution / synthesis circuit 10, for example, capacitors, inductors and resistors are realized by chip components, these chip components are disposed on the dielectric substrate, and strips between the chip components are formed on the dielectric substrate. By connecting with the conductor pattern, the configuration can be made small.

  As described above, according to the first embodiment, since the circuit is configured by the series resonant circuit and the parallel resonant circuit including the lumped element of the capacitor and the inductor, and the isolation resistor, the circuit can be configured in a small size. In addition, the power distribution and synthesis circuit 10 operating in six different frequency bands can be obtained.

Second Embodiment
FIG. 5 is a circuit diagram showing a configuration of a power distribution and combining circuit 20 according to the second embodiment. The power distribution and combination circuit 20 shown in FIG. 5 corresponds to the case of n = 6 in the power distribution and combination circuit according to claim 3.

  The power distribution synthesis circuit 20 has a first input / output terminal 1, a second input / output terminal 2, and a third input / output terminal 3. In addition, the power distribution and synthesis circuit 20 is configured such that the first parallel resonant circuit 21, the second parallel resonant circuit 22, the first series resonant circuit 23, the second series resonant circuit 24, the third series resonant circuit 25, and the like. And the resistance 26.

The first parallel resonant circuit 21 has a first connection portion 4 connected to the first input / output terminal 1 and a second connection portion connected to the second input / output terminal 2. The other end is connected to 5. The first parallel resonant circuit 21 has a plurality of parallel resonant circuits connected in series with each other. More specifically, the first parallel resonant circuit 21, a parallel resonant circuit inductor L ₁ and capacitor C ₁ are connected in parallel, the inductor L ₃ and the parallel resonant circuit capacitor C ₃ are connected in parallel, and an inductor L ₅ and a capacitor C ₅ have a parallel resonant circuit connected in parallel.

The second parallel resonance circuit 22 has a third connection connected to the third input / output terminal 3 and having one end connected to the first connection 4 connected to the first input / output terminal 1 The other end is connected to 6. The second parallel resonant circuit 22 includes a plurality of parallel resonant circuits having the same capacitance and inductance as the plurality of parallel resonant circuits included in the first parallel resonant circuit 21. Specifically, in the second parallel resonance circuit 22, as in the first parallel resonance circuit 21, a parallel resonance circuit in which the inductor L ₁ and the capacitor C ₁ are connected in parallel, an inductor L ₃ and a capacitor C ₃ are in parallel. connected parallel resonant circuit, and an inductor L ₅ and the capacitor C ₅ has a parallel resonance circuit connected in parallel.

One end of the first series resonance circuit 23 is connected to the second connection portion 5, and the other end is grounded. The first series resonant circuit 23 has a plurality of series resonant circuits connected in parallel with each other. More specifically, the first series resonant circuit 23, inductor L ₂ and series resonant circuit capacitor C ₂ are connected in series, the inductor L ₄ and the series resonant circuit capacitor C ₄ are connected in series, and the inductor L ₆ and a capacitor C ₆ have a series resonant circuit connected in series.

The second series resonant circuit 24 has one end connected to the third connection 6 and the other end grounded. The second series resonant circuit 24 is connected in parallel to each other, and includes a plurality of series resonant circuits having the same capacitance and inductance as the first series resonant circuit 23. Specifically, the second series resonant circuit 24, inductor L ₂ and the series resonant circuit capacitor C ₂ are connected in series, the inductor L ₄ and the series resonant circuit capacitor C ₄ are connected in series, and the inductor L ₆ and a capacitor C ₆ have a series resonant circuit connected in series.

The third series resonant circuit 25 has one end connected to the first connection portion 4 and the other end grounded. In the third series resonant circuit 25, a capacitor having a capacitance value twice that of the capacitors included in the plurality of series resonant circuits included in the first series resonant circuit 23 and a plurality of series resonant circuits included in the first series resonant circuit 23 A plurality of series resonant circuits are connected in parallel, each having an inductor having an inductance value half that of the inductor included. Specifically, the third series resonant circuit 25, inductor 0.5 L ₂ and series resonant circuit capacitor 2C ₂ are connected in series, the inductor 0.5 L ₄ and a series resonant circuit capacitor 2C ₄ are connected in series , and inductors 0.5 L ₆ and the capacitor 2C ₆ has a series resonant circuit connected in series.

  The isolation resistor 26 is connected between the second connection 5 and the third connection 6. The isolation resistor 26 is a resistor for electrically insulating between the second input / output terminal 2 and the third input / output terminal 3.

The values of the elements included in the power distribution and synthesis circuit 20 are values determined as follows.
First, the power distribution / combination circuit 20 is operated to set the frequency band to be the passband from the first frequency band to the nth frequency band (n is an even number of 4 or more), and the frequency near the first frequency band is f ₁ The frequency near the frequency band is f _n . The load impedance connected to the first input / output terminal 1, the second input / output terminal 2 and the third input / output terminal 3 is assumed to be Z ₀ (real number).

In this case, the capacitance C _2k-1 (k is a natural number, n-1 2 2k-1) of the capacitor included in each parallel resonant circuit of the first parallel resonant circuit 21 and the inductance L _2k-1 (k is a natural number) of each inductor , N−1 ≧ 2k−1), capacitance C _2k (k is a natural number, n 2 2k) of each capacitor included in each series resonant circuit of the first series resonant circuit 23, and inductance L _2k (k is a natural number, n ≧ 2 k) and the isolation resistance R ₁ are determined by the following equations.

Next, the operation of the power distribution and synthesis circuit 20 will be described. The first frequency band, the second frequency band, the third frequency band, the fourth frequency band, the fifth frequency band, and the sixth frequency band for operating the power distribution and synthesis circuit 20 respectively. Let the near frequencies be f ₁ , f ₂ , f ₃ , f ₄ , f ₅ and f ₆ . Capacitance value of a capacitor included in the power distribution synthesis circuit 20, inductor inductance value, and resistance for operating as the power distribution synthesis circuit 20 at frequencies f ₁ , f ₂ , f ₃ , f ₄ , f ₅ , f ₆ The resistance value of is given by equations (2.1) to (2.5).

Here, for convenience of explanation, the value of load impedance Z ₀ (real number) connected to input / output terminals 1, 2 and 3 is 50 Ω, and near frequency f ₁ of the first frequency band is 0.9 GHz, 2GHz near frequency _{f 2} of the second frequency band, a third 3.4GHz near frequency _{f 3} of the frequency band, the fourth 5.8GHz near frequency _{f 4} of the frequency band, near the frequency of the fifth frequency band the f ₅ 6 GHz, selects a neighborhood frequency _{f 6} of the frequency band of the 6 to 8 GHz.

FIGS. 6-8 is a figure which shows the frequency characteristic (calculation value) of S parameter of the electric power distribution synthetic | combination circuit 20 with which the constant of each element was defined based on said conditions. In FIG. 6, similarly to FIG. 2, when a high frequency signal is input from the input / output terminal 1, the magnitude of the high frequency signal distributed to the input / output terminal 2 and the input / output terminal 3, that is, the distribution amplitude | S21 | Shows | S31 |). The frequency characteristic and the frequency characteristic of S11 and S22 shown in FIG. 7 of S21 shown in FIG. 6, in the first to sixth frequency bands in the vicinity of the frequency _f 1 ~f ₆ (corresponding to F1 to F6), input and output terminal It can be seen that the high frequency signal input from 1 is equally distributed to the input and output terminals 2 and 3 without being reflected.

  Further, it can be understood from the frequency characteristics of S32 shown in FIG. 8 that the input / output terminals 2 and 3 are completely isolated in the first to sixth frequency bands (corresponding to F1 to F6). Therefore, even if a mismatch occurs with a load such as an antenna connected to the input / output terminals 2 and 3 and a reflected wave is generated, the reflected waves are transmitted to the terminals of the input / output terminals 2 and 3. It operates as a stable power distribution and synthesis circuit without being transmitted.

  As described above, according to the second embodiment, since the circuit is configured by the series resonant circuit and the parallel resonant circuit including the lumped element of the capacitor and the inductor, and the isolation resistor, the circuit can be configured in a small size. In addition, the power distribution and synthesis circuit 20 operating in six different frequency bands can be obtained.

Third Embodiment
FIG. 9 is a circuit diagram showing a configuration of a power distribution and combination circuit 30 according to the third embodiment. The power distribution and combination circuit 30 shown in FIG. 9 corresponds to the case of n = 6 in claim 5.

  The power distribution synthesis circuit 30 has a first input / output terminal 1, a second input / output terminal 2, and a third input / output terminal 3. The power distribution and synthesis circuit 30 further includes a first series resonance circuit 31, a second series resonance circuit 32, a first parallel resonance circuit 33, a second parallel resonance circuit 34, and an isolation resistor 35.

The first series resonant circuit 31 has a first connection portion 4 connected to the first input / output terminal 1 and a second connection portion connected to the second input / output terminal 2. The other end is connected to 5. The first series resonant circuit 31 has a plurality of series resonant circuits connected in parallel with each other. More specifically, the first series resonant circuit 31, inductor L ₁ and a series resonant circuit capacitor C ₁ are connected in series, the inductor L ₃ and the series resonant circuit capacitor C ₃ are connected in series, and the inductor L ₅ and a capacitor C ₅ have a series resonant circuit connected in series.

The second series resonant circuit 32 has a third connection connected to the third input / output terminal 3 and having one end connected to the first connection 4 connected to the first input / output terminal 1. The other end is connected to 6. The second series resonant circuit 32 includes a plurality of series resonant circuits having the same capacitance and inductance as the plurality of series resonant circuits included in the first series resonant circuit 31. Specifically, the second series resonant circuit 32, like the first series resonant circuit 31, series resonant circuit inductor L ₁ and capacitor C ₁ are connected in series, the inductor L ₃ and capacitor C ₃ are in series connected series resonant circuit, and the inductor L ₅ and the capacitor C ₅ has a series resonant circuit connected in series.

The first parallel resonant circuit 33 is connected in series with the isolation resistor 35 between the second connection 5 and the third connection 6. The first parallel resonant circuit 33 has a plurality of parallel resonant circuits connected in series with each other. More specifically, the first parallel resonant circuit 33, a parallel resonant circuit inductor L ₂ and capacitor C ₂ are connected in parallel, the inductor L ₄ and the parallel resonant circuit capacitor C ₄ are connected in parallel, and an inductor L ₆ and a capacitor C ₆ have a parallel resonant circuit connected in parallel.

The second parallel resonant circuit 34 has one end connected to the first connection portion 4 and the other end grounded. The second parallel resonant circuit 34 has the same capacitance as the plurality of parallel resonant circuits included in the first parallel resonant circuit 33, and the same inductance as the plurality of parallel resonant circuits included in the first parallel resonant circuit 33. A plurality of parallel resonant circuits are connected in series. Specifically, the second parallel resonant circuit 34, a parallel resonant circuit inductor L ₂ and capacitor C ₂ are connected in parallel, the inductor L ₄ and the parallel resonant circuit capacitor C ₄ are connected in parallel, and an inductor L ₆ and a capacitor C ₆ have a parallel resonant circuit connected in parallel.

  The isolation resistor 35 is connected in series with the first parallel resonant circuit 33 between the second connection 5 and the third connection 6. The isolation resistor 35 is a resistor for electrically insulating between the second input / output terminal 2 and the third input / output terminal 3.

The value of each element included in the power distribution and synthesis circuit 30 is a value determined as follows.
First, the power distribution / combination circuit 30 is operated to set the frequency band to be the passband from the first frequency band to the nth frequency band (n is an even number of 4 or more), and the adjacent frequency of the first frequency band is f ₁ The frequency near the frequency band is f _n . The load impedance connected to the first input / output terminal 1, the second input / output terminal 2 and the third input / output terminal 3 is assumed to be Z ₀ (real number).

In this case, the capacitance C _2k-1 (k is a natural number, n-1 2 2k-1) of the capacitor included in each series resonant circuit of the first series resonant circuit 31 and the inductance L _2k-1 (k is a natural number) of each inductor , N−1 ≧ 2k−1), capacitance C _2k (k is a natural number, n 2 2k) of each capacitor included in each parallel resonance circuit of the first parallel resonance circuit 33, and inductance L _2k (k is a natural number, n ≧ 2 k) and the isolation resistance R ₁ are determined by the following equations.

Next, the operation of the power distribution and synthesis circuit 30 will be described. The first frequency band, the second frequency band, the third frequency band, the fourth frequency band, the fifth frequency band, and the sixth frequency band for operating the power distribution / combination circuit 30 respectively. Let the near frequencies be f ₁ , f ₂ , f ₃ , f ₄ , f ₅ and f ₆ . Capacitance value of the capacitor included in the power distribution / combination circuit 30, inductance value of the inductor, and resistance for operating as the power distribution / combination circuit 30 at the frequencies f ₁ , f ₂ , f ₃ , f ₄ , f ₅ , f ₆ The resistance value of is given by equations (3.1) to (3.5).

Here, for convenience of explanation, the value of load impedance Z ₀ (real number) connected to input / output terminals 1, 2 and 3 is 50 Ω, and near frequency f ₁ of the first frequency band is 0.9 GHz, 2GHz near frequency _{f 2} of the second frequency band, a third 3.4GHz near frequency _{f 3} of the frequency band, the fourth 5.8GHz near frequency _{f 4} of the frequency band, near the frequency of the fifth frequency band the f ₅ 6 GHz, selects a neighborhood frequency _{f 6} of the frequency band of the 6 to 8 GHz.

FIGS. 10 to 12 are diagrams showing frequency characteristics (calculated values) of S parameters of the power distribution / combination circuit 30 in which the constants of the respective elements are determined based on the above conditions. 10, similarly to FIG. 2, when the high frequency signal is input from the input / output terminal 1, the magnitude of the high frequency signal distributed to the input / output terminal 2 and the input / output terminal 3, that is, the distribution amplitude | S21 | Shows | S31 |). From S11 and the frequency characteristics of S22 shown in the frequency characteristic and FIG. 11 of S21 shown in FIG. 10, in the first to sixth frequency bands in the vicinity of the frequency _f 1 ~f ₆ (corresponding to F1 to F6), input and output terminal It can be seen that the high frequency signal input from 1 is equally distributed to the input and output terminals 2 and 3 without being reflected.

  Further, it is understood from the frequency characteristics of S32 shown in FIG. 12 that the input / output terminals 2 and 3 are completely isolated in the first to sixth frequency bands (corresponding to F1 to F6). Therefore, even if a mismatch occurs with a load such as an antenna connected to the input / output terminals 2 and 3 and a reflected wave is generated, the reflected waves are transmitted to the terminals of the input / output terminals 2 and 3. It operates as a stable power distribution and synthesis circuit without being transmitted.

  As described above, according to the third embodiment, since the circuit is configured by the series resonant circuit and the parallel resonant circuit including the lumped element of the capacitor and the inductor, and the isolation resistor, the circuit can be configured in a small size. In addition, the power distribution and synthesis circuit 30 operating in six different frequency bands can be obtained.

Fourth Embodiment
FIG. 13 is a circuit diagram showing a configuration of a power distribution and combining circuit 40 according to the fourth embodiment. The power distribution and combination circuit 40 shown in FIG. 13 corresponds to the case of n = 6 in the seventh aspect.

  The power distribution synthesis circuit 40 has a first input / output terminal 1, a second input / output terminal 2, and a third input / output terminal 3. The power distribution and synthesis circuit 40 further includes a first parallel resonance circuit 41, a second parallel resonance circuit 42, a first series resonance circuit 43, a second series resonance circuit 44, and an isolation resistor 45.

The first parallel resonant circuit 41 has a first connection portion 4 connected to the first input / output terminal 1 and a second connection portion connected to the second input / output terminal 2. The other end is connected to 5. The first parallel resonant circuit 41 has a plurality of parallel resonant circuits connected in series with each other. More specifically, the first parallel resonant circuit 41, a parallel resonant circuit inductor L ₁ and capacitor C ₁ are connected in parallel, the inductor L ₃ and the parallel resonant circuit capacitor C ₃ are connected in parallel, and an inductor L ₅ and a capacitor C ₅ have a parallel resonant circuit connected in parallel.

The second parallel resonant circuit 42 has a third connection connected to the third input / output terminal 3 and having one end connected to the first connection 4 connected to the first input / output terminal 1. The other end is connected to 6. The second parallel resonant circuit 42 includes a plurality of parallel resonant circuits having the same capacitance and inductance as the plurality of parallel resonant circuits included in the first parallel resonant circuit 41. Specifically, the second parallel resonant circuit 42, like the first parallel resonant circuit 41, a parallel resonant circuit inductor L ₁ and capacitor C ₁ are connected in parallel, the inductor L ₃ and capacitor C ₃ are in parallel connected parallel resonant circuit, and an inductor L ₅ and the capacitor C ₅ has a parallel resonance circuit connected in parallel.

The first series resonant circuit 43 is connected in series with the isolation resistor 45 between the second connection 5 and the third connection 6. The first series resonant circuit 43 has a plurality of series resonant circuits connected in parallel with each other. More specifically, the first series resonant circuit 43, inductor L ₂ and series resonant circuit capacitor C ₂ are connected in series, the inductor L ₄ and the series resonant circuit capacitor C ₄ are connected in series, and the inductor L ₆ and a capacitor C ₆ have a series resonant circuit connected in series.

The second series resonant circuit 44 has one end connected to the first connection portion 4 and the other end grounded. The second series resonant circuit 44 has the same capacitance as the plurality of series resonant circuits included in the first series resonant circuit 43, and the same inductance as the plurality of series resonant circuits included in the first series resonant circuit 43. A plurality of series resonant circuits are connected in parallel. Specifically, the second series resonant circuit 44, inductor L ₂ and the series resonant circuit capacitor C ₂ are connected in series, the inductor L ₄ and the series resonant circuit capacitor C ₄ are connected in series, and the inductor L ₆ and a capacitor C ₆ have a series resonant circuit connected in series.

  The isolation resistor 45 is connected in series with the first series resonant circuit 43 between the second connection 5 and the third connection 6. The isolation resistor 45 is a resistor for electrically insulating between the second input / output terminal 2 and the third input / output terminal 3.

The values of the elements included in the power distribution and synthesis circuit 40 are values determined as follows.
First, the power distribution / combination circuit 40 is operated to set the frequency band to be the passband from the first frequency band to the nth frequency band (n is an even number of 4 or more), and the near frequency of the first frequency band is f ₁ The frequency near the frequency band is f _n . The load impedance connected to the first input / output terminal 1, the second input / output terminal 2 and the third input / output terminal 3 is assumed to be Z ₀ (real number).

In this case, the capacitance C _2k-1 (k is a natural number, n-1 2 2k-1) of the capacitor included in each parallel resonant circuit of the first parallel resonant circuit 41 and the inductance L _2k-1 (k is a natural number) of each inductor , N−1 ≧ 2k−1), capacitance C _2k (k is a natural number, n 2 2k) of each capacitor included in each series resonance circuit of the first series resonance circuit 43, and inductance L _2k (k is a natural number, n ≧ 2 k) and the isolation resistance R ₁ are determined by the following equations.

Next, the operation of the power distribution and synthesis circuit 40 will be described. Power distribution and synthesis circuit 40 operates in different first, second, third, fourth, fifth and sixth frequency bands. Let the near frequencies be f ₁ , f ₂ , f ₃ , f ₄ , f ₅ and f ₆ . In order to operate as a power distribution and synthesis circuit at frequencies f ₁ , f ₂ , f ₃ , f ₄ , f ₅ , and f ₆ , the capacitance value of the capacitor included in the power distribution and synthesis circuit 40, the inductance value of the inductor, and the resistance value The resistance value is given by equations (4.1) to (4.5).

Here, for convenience of explanation, the value of load impedance Z ₀ (real number) connected to input / output terminals 1, 2 and 3 is 50 Ω, and near frequency f ₁ of the first frequency band is 0.9 GHz, 2GHz near frequency _{f 2} of the second frequency band, a third 3.4GHz near frequency _{f 3} of the frequency band, the fourth 5.8GHz near frequency _{f 4} of the frequency band, near the frequency of the fifth frequency band the f ₅ 6 GHz, selects a neighborhood frequency _{f 6} of the frequency band of the 6 to 8 GHz.

FIGS. 14 to 16 are diagrams showing frequency characteristics (calculated values) of S parameters of the power distribution / combination circuit 40 in which the constants of the respective elements are determined based on the above conditions. In FIG. 14, similarly to FIG. 2, when a high frequency signal is input from the input / output terminal 1, the magnitude of the high frequency signal distributed to the input / output terminal 2 and the input / output terminal 3, that is, the distribution amplitude | Shows | S31 |). From S11 and the frequency characteristics of S22 shown in the frequency characteristic and FIG. 15 of S21 shown in FIG. 14, in the first to sixth frequency bands in the vicinity of the frequency _f 1 ~f ₆ (corresponding to F1 to F6), input and output terminal It can be seen that the high frequency signal input from 1 is equally distributed to the input and output terminals 2 and 3 without being reflected.

  Further, it can be understood from the frequency characteristics of S32 shown in FIG. 16 that the input / output terminals 2 and 3 are completely isolated in the first to sixth frequency bands (corresponding to F1 to F6). Therefore, even if a mismatch occurs with a load such as an antenna connected to the input / output terminals 2 and 3 and a reflected wave is generated, the reflected waves are transmitted to the terminals of the input / output terminals 2 and 3. It operates as a stable power distribution and synthesis circuit 40 without being transmitted.

  As described above, according to the fourth embodiment, since the circuit is configured by the series resonant circuit and the parallel resonant circuit including the lumped constant element of the capacitor and the inductor, and the isolation resistor, the circuit can be configured in a small size and different The power distribution and synthesis circuit 40 operating in six frequency bands can be obtained.

Fifth Embodiment
FIG. 17 is a circuit diagram showing a configuration of a power distribution and combining circuit 50 according to the fifth embodiment. The power distribution and combination circuit 50 shown in FIG. 17 corresponds to the case of n = 6 in claim 2.

  The power distribution synthesis circuit 50 has a first input / output terminal 1, a second input / output terminal 2, and a third input / output terminal 3. In addition, the power distribution and synthesis circuit 50 is configured such that the first series resonance circuit 51, the second series resonance circuit 52, the first parallel resonance circuit 53, the second parallel resonance circuit 54, the third parallel resonance circuit 55, and the like. And the resistance 56.

The first series resonance circuit 51 of the power distribution synthesis circuit 50 is any one of the plurality of series resonance circuits of the first series resonance circuit 11 in the power distribution synthesis circuit 10 according to the first embodiment shown in FIG. One series resonant circuit does not have either a capacitor or an inductor. In the first series resonant circuit 51 of the power distribution combining circuit 50 shown in FIG. 17 does not have a capacitor C _5.

Further, in the second series resonance circuit 52 of the power distribution synthesis circuit 50, any one series resonance circuit among the plurality of series resonance circuits included in the second series resonance circuit 12 in the power distribution synthesis circuit 10 is a capacitor or an inductor Among them, one of the series resonant circuits included in the first series resonant circuit 51 does not have the same element as the one that is not included. In the second series resonant circuit 52 of the power distribution combining circuit 50 shown in FIG. 17 does not have a capacitor C _5.

Further, in the first parallel resonance circuit 53 of the power distribution synthesis circuit 50, any one parallel resonance circuit among the plurality of parallel resonance circuits of the first parallel resonance circuit 13 in the power distribution synthesis circuit 10 is a capacitor or an inductor The element (for example, an inductor) different from the element (for example, a capacitor) which one of the series resonant circuits of the first series resonant circuit 51 does not have is not included. In the first parallel resonant circuit 53 of the power distribution combining circuit 50 shown in FIG. 17 does not have the inductor L _6.

Further, the second parallel resonance circuit 54 of the power distribution and synthesis circuit 50 includes any one of the parallel resonance circuits of the plurality of parallel resonance circuits included in the second parallel resonance circuit 14 of the power distribution and synthesis circuit 10 including a capacitor or an inductor. The first series resonance circuit 51 does not have any element different from the element which is not included in any one series resonance circuit. In the second parallel resonance circuit 54 of the power distribution combining circuit 50 shown in FIG. 17 does not have the inductor L _6.

Further, in the third parallel resonance circuit 55 of the power distribution and synthesis circuit 50, any one of the plurality of parallel resonance circuits of the third parallel resonance circuit 15 in the power distribution and synthesis circuit 10 is a capacitor or an inductor The first series resonance circuit 51 does not have any element different from the element which is not included in any one series resonance circuit. In the third parallel resonance circuit 55 of the power distribution combining circuit 50 shown in FIG. 17 does not have the inductor 0.5 L _6.

Next, the operation of the power distribution and synthesis circuit 50 will be described. Capacitance value of a capacitor included in the power distribution and synthesis circuit 50 for operating as a power distribution and synthesis circuit in a frequency band including the frequencies f ₁ , f ₂ , f ₃ , f ₄ , f ₅ and f ₆ , inductance value of an inductor And the resistance value of the resistance is given by equations (1.1) to (1.5).

Here, for convenience of description, it is assumed that the value of the load impedance Z ₀ (real number) connected to the input and output terminals 1, 2, and 3 is 50Ω. Further, the near frequency f1 of the _first frequency band is 0.9 GHz, the near frequency f2 of the _second frequency band is 2 GHz, the near frequency f3 of the _third frequency band is 3.4 GHz, and the fourth frequency band the neighborhood frequency _{f 4} 5.8 GHz, selects a neighborhood frequency _{f 5} of the fifth frequency band 6 GHz, the vicinity of the frequency _{f 6} of the frequency band of the 6 to 8GHz of.

  FIGS. 18 to 20 are diagrams showing frequency characteristics (calculated values) of S parameters of the power distribution / combination circuit 50 in which the constants of the respective elements are determined based on the above conditions. From FIGS. 18 to 20, it can be seen that matching is achieved in five frequency bands (F1 to F5 in FIGS. 18 to 20) different from the first embodiment shown in FIGS. It is considered that the resonance with another resonant circuit occurred because the inductors or capacitors of some resonant circuits were eliminated.

  As described above, according to the fifth embodiment, since the circuit is configured by the series resonant circuit and the parallel resonant circuit including the lumped element of the capacitor and the inductor, and the isolation resistor, the circuit can be configured in a small size, In addition, the power distribution and synthesis circuit operating in five different frequency bands (corresponding to F1 to F5 in FIGS. 18 to 20) can be obtained.

In the above description, in the case example it has been described of the case where the power distribution combining circuit 10 deletes the capacitor C ₅ and the inductor L _6, which is removed from the power distributing and combining circuit 10 the inductor L ₅ and the capacitor C ₆ Even, the same effect can be obtained.

Sixth Embodiment
FIG. 21 is a circuit diagram showing a configuration of a power distribution and combination circuit 60 according to a sixth embodiment. The power distribution and combination circuit 60 shown in FIG. 21 corresponds to the case of n = 6 in the fourth aspect.

Power dividing and combining circuit 60 from the power distribution synthesis circuit 20 according to the second embodiment shown in FIG. 5, a configuration in which the inductor L ₅ and the capacitor C _6. The power distribution synthesis circuit 60 includes a first parallel resonance circuit 61, a second parallel resonance circuit 62, a first series resonance circuit 63, a second series resonance circuit 64, a third series resonance circuit 65, and an isolation resistor 66.

The first parallel resonant circuit 61 and the second parallel resonant circuit 62 includes a plurality of parallel resonant circuit and the capacitor C ₅ connected in series with each other. The first series resonant circuit 63, a second series resonant circuit 64 and the third series resonant circuit 65 includes a plurality of series resonance circuit and the inductor L ₆ connected in parallel with each other.

Also in such a configuration, as in the fifth embodiment, matching can be performed in five frequency bands different from the second embodiment. The power distributing and combining circuit 60 may be deleted composed from the power distributing and combining circuit 20 the capacitor C ₅ and the inductor L _6.

Seventh Embodiment
FIG. 22 is a circuit diagram showing a configuration of a power distribution and combination circuit 70 according to a seventh embodiment. The power distribution and combination circuit 70 shown in FIG. 22 corresponds to the case of n = 6 in the sixth aspect.

Power dividing and combining circuit 70 from the power distribution synthesis circuit 30 according to the third embodiment shown in FIG. 9, a configuration in which the inductor L ₅ and the capacitor C _6. The power distribution and synthesis circuit 70 includes a first series resonance circuit 71, a second series resonance circuit 72, a first parallel resonance circuit 73, a second parallel resonance circuit 74, and an isolation resistor 75.

The first series resonant circuit 71 and the second series resonant circuit 72 includes a plurality of series resonant circuit and the capacitor C ₅ connected in parallel with each other. The first parallel resonant circuit 73 and the second parallel resonant circuit 74 includes a plurality of parallel resonant circuit and the inductor L ₆ connected in series with each other.

Also in this configuration, as in the fifth embodiment, matching can be performed in five frequency bands different from the third embodiment. The power distributing and combining circuit 70 may be deleted consists power divider combining circuit 30 the capacitor C ₅ and the inductor L _6.

Eighth Embodiment
FIG. 23 is a circuit diagram showing a configuration of a power distribution and combining circuit 80 according to the eighth embodiment. The power distribution and combination circuit 80 shown in FIG. 23 corresponds to the case of n = 6 in claim 8.

Power dividing and combining circuit 80 from the power distribution synthesis circuit 40 of the fourth embodiment shown in FIG. 13, a configuration in which the inductor L ₅ and the capacitor C _6. The power distribution and synthesis circuit 80 includes a first parallel resonant circuit 81, a second parallel resonant circuit 82, a first series resonant circuit 83, a second series resonant circuit 84, and an isolation resistor 85.

The first parallel resonant circuit 81 and the second parallel resonant circuit 82 includes a plurality of parallel resonant circuit and the capacitor C ₅ connected in series with each other. The first series resonant circuit 83 and the second series resonant circuit 84 includes a plurality of series resonance circuit and the inductor L ₆ connected in parallel with each other.

Also in this configuration, as in the fifth embodiment, matching can be performed in five frequency bands different from the fourth embodiment. The power distributing and combining circuit 80 may be deleted composed from the power distributing and combining circuit 40 the capacitor C ₅ and the inductor L _6.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It is apparent to those skilled in the art that various changes or modifications can be added to the above embodiment. It is also apparent from the scope of the claims that the embodiments added with such alterations or improvements can be included in the technical scope of the present invention. For example, in the above description, the case of n = 6 was described, but the present invention can be applied to the case where n is any even number of 4 or more.

1, 2, 3 Input / output terminal 10 Power distribution / synthesis circuit, 11 first series resonance circuit, 12 second series resonance circuit, 13 first parallel resonance circuit, 14 second parallel resonance circuit, 15 third parallel resonance circuit, 16 Isolation resistance 20 Power distribution and synthesis circuit, 21 first parallel resonant circuit, 22 second parallel resonant circuit, 23 first series resonant circuit, 24 second series resonant circuit, 25 third series resonant circuit, 26 isolation resistor 30 power Distribution and synthesis circuit, 31 first series resonance circuit, 32 second series resonance circuit, 33 first parallel resonance circuit, 34 second parallel resonance circuit, 35 isolation resistor 40 power distribution and synthesis circuit, 41 first parallel resonance circuit, 42 Second parallel resonant circuit, 43 first series resonant circuit, 44 second series resonant circuit, 45 isolation resistor 50 power distribution combining circuit, 51 first series resonant circuit, 52 second series resonance circuit, 53 first parallel resonance circuit, 54 second parallel resonance circuit, 55 third parallel resonance circuit, 56 isolation resistor 60 power distribution synthesis circuit, 61 first parallel resonance circuit, 62 second parallel resonance Circuits, 63 first series resonant circuit, 64 second series resonant circuit, 65 third series resonant circuit, 66 isolation resistor 70 power distribution combining circuit, 71 first series resonant circuit, 72 second series resonant circuit, 73 first Parallel resonance circuit, 74 second parallel resonance circuit, 75 isolation resistor 80 power distribution and synthesis circuit, 81 first parallel resonance circuit, 82 second parallel resonance circuit, 83 first series resonance circuit, 84 second series resonance circuit, 85 Isolation resistance

Claims (9)

One end is connected to a first connection connected to the first input / output terminal, and the other end is connected to a second connection connected to the second input / output terminal, and A first series resonant circuit having a plurality of series resonant circuits connected in parallel;
One end is connected to the first connection portion connected to the first input / output terminal, and the other end is connected to a third connection portion connected to a third input / output terminal, And a second series resonant circuit including a plurality of series resonant circuits connected in parallel with each other and including a capacitor and an inductor of the same value as the capacitors and inductors included in the plurality of series resonant circuits included in the first series resonant circuit. ,
A first parallel resonant circuit having a plurality of parallel resonant circuits connected at one end to the second connection portion and grounded at the other end and connected in series with each other;
The third connection portion has one end connected and the other end grounded, and includes a capacitor and an inductor having the same value as the capacitor and the inductor included in the first parallel resonant circuit, and is connected in series with each other A second parallel resonant circuit having a plurality of parallel resonant circuits;
One end is connected to the first connection portion and the other end is grounded, and a capacitor having a value twice that of the capacitor included in the first parallel resonant circuit, and an inductor included in the first parallel resonant circuit A third parallel resonant circuit including a plurality of parallel resonant circuits connected in series with each other and including an inductor having a half value of
An isolation resistor connected between the second connection and the third connection;
From the vicinity frequency f ₁ of the desired first frequency band and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), the first output terminal, said second input terminal and the Using the load impedance Z ₀ (real number) connected to the third input / output terminal, the value C _2k-1 (k is a natural number, n-1 ≧ 2k) of the capacitor of the first series resonant circuit according to the following equation -1) and the inductor value L _2k-1 (k is a natural number, n-1 ≧ 2k-1), the capacitor value C _2k of the first parallel resonant circuit (k is a natural number, n ≧ 2k) and the inductor A power distribution / combination circuit characterized in that a value L _2k (k is a natural number, n ≧ 2k) and a value R ₁ of isolation resistance are determined.
In the power distribution and synthesis circuit according to claim 1,
n is an even number of 6 or more,
Of the plurality of series resonant circuits included in the first series resonant circuit, only one series resonant circuit does not have a capacitor ,
Of the plurality of series resonant circuits included in the second series resonant circuit, only one series resonant circuit does not have a capacitor ,
Of the plurality of parallel resonant circuits included in the first parallel resonant circuit, only one of the parallel resonant circuits does not have an inductor ,
Of the plurality of parallel resonant circuits included in the second parallel resonant circuit, only one parallel resonant circuit does not have an inductor ,
A power distribution / combination circuit, wherein only one of the plurality of parallel resonant circuits included in the third parallel resonant circuit does not have an inductor . One end is connected to a first connection connected to the first input / output terminal, and the other end is connected to a second connection connected to the second input / output terminal, and A first parallel resonant circuit having a plurality of parallel resonant circuits connected in series;
One end is connected to the first connection portion connected to the first input / output terminal, and the other end is connected to a third connection portion connected to a third input / output terminal, And a second parallel resonant circuit including a plurality of parallel resonant circuits connected in series, including a capacitor and an inductor having the same value as the capacitors and inductors included in the plurality of parallel resonant circuits included in the first parallel resonant circuit. ,
A first series resonant circuit having a plurality of series resonant circuits connected at one end to the second connection portion and grounded at the other end and connected in parallel with each other;
The third connection portion has one end connected and the other end grounded, and includes a capacitor and an inductor having the same value as the capacitor and the inductor included in the first series resonant circuit, and is connected in parallel with each other A second series resonant circuit having a plurality of series resonant circuits;
One end is connected to the first connection portion and the other end is grounded, and a capacitor having a value twice that of the capacitor included in the first series resonant circuit, and an inductor included in the first series resonant circuit A third series resonant circuit including a plurality of series resonant circuits connected in parallel with each other and including an inductor having a half value of
An isolation resistor connected between the second connection and the third connection;
From the vicinity frequency f ₁ of the desired first frequency band and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), the first output terminal, said second input terminal and the By using the load impedance Z ₀ (real number) connected to the third input / output terminal, the value C _2k-1 (k is a natural number, n-1 2 2 k) of the capacitor of the first parallel resonant circuit according to the following equation -1) and inductor value L _2k-1 (k is a natural number, n-1 2 2k-1), capacitor value C _2k of the first series resonant circuit (k is a natural number, n 前 記 2k) and inductor A power distribution / combination circuit characterized in that a value L _2k (k is a natural number, n ≧ 2k) and a value R ₁ of isolation resistance are determined.
In the power distribution and synthesis circuit according to claim 3,
n is an even number of 6 or more,
Of the plurality of parallel resonant circuits included in the first parallel resonant circuit, only one parallel resonant circuit does not have an inductor ,
Of the plurality of parallel resonant circuits included in the second parallel resonant circuit, only one parallel resonant circuit does not have an inductor ,
Of the plurality of series resonant circuits included in the first series resonant circuit, only one series resonant circuit does not have a capacitor ,
Of the plurality of series resonant circuits included in the second series resonant circuit, only one series resonant circuit does not have a capacitor ,
A power distribution / combination circuit according to any one of the present invention, wherein only one series resonant circuit among the plurality of series resonant circuits included in the third series resonant circuit has no capacitor . One end is connected to a first connection connected to the first input / output terminal, and the other end is connected to a second connection connected to the second input / output terminal, and A first series resonant circuit having a plurality of series resonant circuits connected in parallel;
One end is connected to the first connection portion connected to the first input / output terminal, and the other end is connected to a third connection portion connected to a third input / output terminal, And a second series resonant circuit including a plurality of series resonant circuits connected in parallel with each other and including a capacitor and an inductor of the same value as the capacitors and inductors included in the plurality of series resonant circuits included in the first series resonant circuit. ,
An isolation resistor connected between the second connection and the third connection;
A first parallel resonant circuit having a plurality of parallel resonant circuits connected in series with the isolation resistor and connected in series with each other between the second connection portion and the third connection portion;
The first connection portion has one end connected and the other end grounded, and includes a capacitor and an inductor of the same value as the capacitor and the inductor included in the first parallel resonant circuit, and is connected in series with each other A second parallel resonant circuit having a plurality of parallel resonant circuits;
Equipped with
From the vicinity frequency f ₁ of the desired first frequency band and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), the first output terminal, said second input terminal and the Using the load impedance Z ₀ (real number) connected to the third input / output terminal, the value C _2k-1 (k is a natural number, n-1 ≧ 2k) of the capacitor of the first series resonant circuit according to the following equation -1) and the inductor value L _2k-1 (k is a natural number, n-1 ≧ 2k-1), the capacitor value C _2k of the first parallel resonant circuit (k is a natural number, n ≧ 2k) and the inductor A power distribution / combination circuit characterized in that a value L _2k (k is a natural number, n ≧ 2k) and a value R ₁ of isolation resistance are determined.
In the power distribution and synthesis circuit according to claim 5,
n is an even number of 6 or more,
Of the plurality of series resonant circuits included in the first series resonant circuit, only one series resonant circuit does not have an inductor ,
Of the plurality of series resonant circuits included in the second series resonant circuit, only one series resonant circuit does not have an inductor ,
Of the plurality of parallel resonant circuits included in the first parallel resonant circuit, only one of the parallel resonant circuits does not have a capacitor ,
A power distribution / combination circuit, wherein only one of the plurality of parallel resonant circuits included in the second parallel resonant circuit does not have a capacitor . One end is connected to a first connection connected to the first input / output terminal, and the other end is connected to a second connection connected to the second input / output terminal, and A first parallel resonant circuit having a plurality of parallel resonant circuits connected in series;
One end is connected to the first connection portion connected to the first input / output terminal, and the other end is connected to a third connection portion connected to a third input / output terminal, And a second parallel resonant circuit including a plurality of parallel resonant circuits connected in series, including a capacitor and an inductor having the same value as the capacitors and inductors included in the plurality of parallel resonant circuits included in the first parallel resonant circuit. ,
An isolation resistor connected between the second connection and the third connection;
A first series resonant circuit having a plurality of series resonant circuits connected in series with the isolation resistor and connected in parallel with each other between the second connection portion and the third connection portion;
The first connection portion has one end connected and the other end grounded, and includes a capacitor and an inductor having the same value as the capacitor and the inductor included in the first series resonant circuit, and is connected in parallel with each other A second series resonant circuit having a plurality of series resonant circuits;
Equipped with
From the vicinity frequency f ₁ of the desired first frequency band and near the frequency f _n of the frequency band of the n (n is an even number of 4 or more), the first output terminal, said second input terminal and the By using the load impedance Z ₀ (real number) connected to the third input / output terminal, the value C _2k-1 (k is a natural number, n-1 2 2 k) of the capacitor of the first parallel resonant circuit according to the following equation -1) and inductor value L _2k-1 (k is a natural number, n-1 2 2k-1), capacitor value C _2k of the first series resonant circuit (k is a natural number, n 前 記 2k) and inductor A power distribution / combination circuit characterized in that a value L _2k (k is a natural number, n ≧ 2k) and a value R ₁ of isolation resistance are determined.
In the power distribution and synthesis circuit according to claim 7,
n is an even number of 6 or more,
Of the plurality of parallel resonant circuits included in the first parallel resonant circuit, only one parallel resonant circuit does not have an inductor ,
Of the plurality of parallel resonant circuits included in the second parallel resonant circuit, only one parallel resonant circuit does not have an inductor ,
Of the plurality of series resonant circuits included in the first series resonant circuit, only one series resonant circuit does not have a capacitor ,
A power distribution / combination circuit according to claim 1, wherein only one of the plurality of series resonant circuits included in the second series resonant circuit does not have a capacitor . The capacitor, the inductor, and the isolation resistor are chip components,
The power distribution / combination circuit according to any one of claims 1 to 8, wherein the chip parts are disposed on a dielectric substrate and connected by a strip conductor pattern formed on the dielectric substrate. .