Matching segment circuit to which radio frequency is applied and radio frequency integrated devices using the matching segment circuit

Abstract

Provided are a matching segment circuit, to which a radio frequency (RF) is applied, and an RF integrated device using the matching segment circuit. The matching segment circuit to which an RF is applied may include an input end connected to a first RF device, a parallel segment having a first capacitor and a first inductor connected in parallel, a second inductor connected to the parallel segment in series, and an output end connected to a second RF device. The first capacitor, the first inductor, and the second inductor may be configured so that an impedance of the first RF device and an impedance of the second RF device may match.

1 . A matching segment circuit to which a radio frequency (RF) is applied, the circuit comprising:
 an input end connected to a first RF device;   a parallel segment having a first capacitor and a first inductor connected in parallel;   a second inductor connected to the parallel segment in series; and   an output end connected to a second RF device,   wherein the first capacitor, the first inductor, and the second inductor are configured so that an impedance of the first RF device and an impedance of the second RF device match.   
     
     
         2 . A matching segment circuit to which a radio frequency (RF) is applied, the circuit comprising:
 an input end connected to a first RF device;   a parallel segment having a first capacitor and a first inductor connected in parallel;   a second capacitor connected to the parallel segment in series; and   an output end connected to a second RF device,   wherein the first capacitor, the first inductor, and the second capacitor are configured so that an impedance of the first RF device and an impedance of the second RF device match.   
     
     
         3 . A matching segment circuit to which a radio frequency (RF) is applied, the circuit comprising:
 a first matching unit; and   a second matching unit,   wherein the first matching unit includes:
 a first input end, 
 a first parallel segment, connected to the first input end, having a first capacitor and a first inductor connected in parallel, 
 a second inductor connected to the first parallel segment in series, and 
 a first output end connected to the second inductor; and 
   the second matching unit includes:
 a second input end, 
 a second parallel segment, connected to the second input end, having a second capacitor and a third inductor connected in parallel, 
 a third capacitor connected to the second parallel segment in series, and 
 a second output end connected to the third capacitor; and 
   the first, second, and third capacitor and first, second, and third inductor are configured so that an impedance of at least one RF device connected to an input of the matching segment circuit matches an impedance of at least one RF device connected to an output of the matching segment circuit.   
     
     
         4 . The circuit of  claim 3 , wherein the first output end of the first matching unit and the second input end of the second matching unit are connected to each other in series. 
     
     
         5 . The circuit of  claim 3 , wherein the first input end of the first matching unit and the second input end of the second matching unit are connected to each other in parallel to a first RF device. 
     
     
         6 . The circuit of  claim 3 , wherein the first input end of the first matching unit is connected to a first RF device, and the second input end of the second matching unit is connected to a second RF device. 
     
     
         7 . The circuit of  claim 3 , wherein the first output end of the first matching unit and the second output end of the second matching unit are connected to each other in parallel to a third RF device. 
     
     
         8 . The circuit of  claim 3 , wherein the first output end of the first matching unit is connected to a third RF device, and the second output end of the second matching unit is connected to a fourth RF device. 
     
     
         9 . A radio frequency (RF) integrated device using a matching segment circuit, the device comprising:
 a first matching unit; and   a first integrated device, connected to the first matching unit, using a bulk acoustic wave resonator (BAWR) including a second input end and a second output end,   wherein the first matching unit includes:
 a first input end, 
 a parallel segment, connected to the first input end, having a first capacitor and a first inductor connected to each other in parallel, 
 a second inductor connected to the parallel segment in series, and 
 a first output end connected to the second inductor, 
 wherein the first capacitor, the first inductor, and the second inductor are configured so that an impedance of the first integrated device matches an impedance of at least one external RF device connected to the first matching unit. 
   
     
     
         10 . The device of  claim 9 , wherein:
 the first integrated device is a band-pass filter, the second output end and the second input end being respectively configured as a single port, and   the second output end is connected to the first input end.   
     
     
         11 . The device of  claim 9 , wherein:
 the first integrated device is a band-pass filter, the second output end and the second input end being respectively configured as a single port, and   the second input end is connected to the first output end.   
     
     
         12 . The device of  claim 9 , further comprising:
 a second integrated device, connected to the first matching unit, using a BAWR including a third output end and a third input end respectively configured as a single port; and   an antenna end to transmit and receive a signal.   
     
     
         13 . The device of  claim 12 , wherein:
 the first integrated device is a receiving filter, the second output end and the second input end being respectively configured as a single port,   the second integrated device is a transmitting filter,   the second input end is connected to the first output end, and   the third input end and the first input end are connected to the antenna end.   
     
     
         14 . A radio frequency (RF) integrated device using a matching segment circuit, the device comprising:
 a first matching unit;   a second matching unit; and   a first integrated device, connected to the first and second matching unit, using a bulk acoustic wave resonator (BAWR) including a third input end and a third output end,   wherein the first matching unit includes:
 a first input end, 
 a first parallel segment, connected to the first input end, having a first capacitor and a first inductor connected in parallel, 
 a second inductor connected to the first parallel segment in series, and 
 a first output end connected to the second inductor; and 
   the second matching unit includes:
 a second input end, 
 a second parallel segment, connected to the second input end, having a second capacitor and a third inductor connected in parallel, 
 a third capacitor connected to the second parallel segment in series, and 
 a second output end connected to the third capacitor; and 
   the first, second, and third capacitor and first, second, and third inductor are configured so that an impedance of the first integrated device matches an impedance of at least one external RF device connected to the first and/or second matching unit.   
     
     
         15 . The device of  claim 14 , wherein the first integrated device is a band-pass filter including the third output end and the third input end respectively configured as a single port, and the first and second input ends are connected to the third output end. 
     
     
         16 . The device of  claim 14 , wherein:
 the first integrated device is a balance filter including the third output end and the third input end respectively configured as a dual port, and   the first input end and the second input end are connected to the third output end.   
     
     
         17 . The device of  claim 14 , wherein the first integrated device is a band-pass filter including the third output end and the third input end respectively configured as a single port, and the first and second output ends are connected to the third input end. 
     
     
         18 . The device of  claim 14 , wherein the first integrated device is a band-pass filter including the third output end and the third input end respectively as a dual port, the first and second input ends are connected to the one external RF device, and the first and second output ends are connected to the third input end. 
     
     
         19 . The device of  claim 14 , wherein the first output end of the first matching unit is connected to a first external RF device, and the second output end of the second matching unit is connected to a second external RF device. 
     
     
         20 . The device of  claim 14 , wherein the first input end of the first matching unit is connected to a first external RF device, and the second input end of the second matching unit is connected to a second external RF device. 
     
     
         21 . The device of  claim 14 , further comprising:
 a second integrated device, connected to the first and/or second matching unit, using a BAWR including a fourth output end and a fourth input end respectively configured as a single port; and   an antenna end to transmit and receive a signal.   
     
     
         22 . The device of  claim 21 , wherein:
 the first integrated device is a receiving filter, the third output end and the third input end respectively configured as a dual port,   the second integrated device is a transmitting filter,   the third input end is connected to the first output end and the second output end, and   the fourth input end, the first input end, and the second input end are connected to the antenna end.   
     
     
         23 . A matching segment circuit to match impedances between connected radio frequency (RF) devices, the circuit comprising:
 an input end configured to be connected to at least one RF device;   an output end configured to be connected to at least one other RF device;   a first passive electrical component connected between the input end and a reference potential;   a second passive electrical component connected between the input end and the output end;   wherein the first and second passive electrical components are configured to match the impedances between the connected RF devices.   
     
     
         24 . The circuit of  claim 23 , further comprising a third passive electrical component connected between the output end and the reference potential. 
     
     
         25 . The circuit of  claim 23 , wherein the first and second passive electrical components are capacitors, inductors, or a combination thereof.