Multi-harmonic matching networks

Abstract

A communication matching network for multi-harmonic suppression includes a communication circuit configured to provide a signal. The communication matching network further includes a matching circuit configured to receive the signal from the communication circuit and suppress one or more harmonics of the received signal to generate a filtered signal, wherein the matching circuit includes a transformer comprising a first winding and a second winding, wherein the first winding includes a first inductance and the second winding includes a second inductance and wherein the matching network includes a harmonic trap including a third inductance such that the third inductance is located inside or within a physical layout of the first winding and/or the second winding. The communication matching network further includes a receiver circuit configured to receive the filtered signal from the matching circuit for further processing.

1 - 25 . (canceled) 
     
     
         26 . A communication matching network, comprising:
 a matching network configured to be coupled between a communication circuit and an antenna port, comprising:
 an impedance matching circuit comprising a first coil and a second coil inductively coupled together; and 
 a harmonic filter comprising a third coil physically located inside a layout of the first coil, the second coil, or both the first coil and the second coil; and 
   wherein a distance between the first coil and the third coil is a first distance, a distance between the second coil and the third coil is a second distance, and a distance between the first coil and the second coil is a third distance, and   wherein the first distance is greater than the third distance, and the second distance is greater than the third distance.   
     
     
         27 . The communication matching network of  claim 26 , further comprising the communication circuit coupled to the matching network, and configured to provide a signal to the matching network. 
     
     
         28 . The communication matching network of  claim 27 , further comprising the antenna port configured to receive an output signal from the matching network, wherein the output signal is associated with the signal from the communication circuit. 
     
     
         29 . The communication matching network of  claim 26 , wherein the impedance matching circuit comprises a transformer comprising the first coil having a first inductance as a first winding and the second coil having a second inductance as a second winding, and wherein the first winding and the second winding are inductively coupled together. 
     
     
         30 . The communication matching network of  claim 26 , wherein an inductive coupling between the third coil and the first and second coils is less than or equal to 0.2. 
     
     
         31 . A communication matching network, comprising:
 means for providing, by a communication circuit, a signal;   means for receiving, by an impedance matching means, the signal, wherein the impedance matching means comprises:
 a first inductive coupling means and a second inductive coupling means inductively coupled together; and 
   means for suppressing, by a harmonic filtering means, one or more harmonics of the received signal to generate an output signal,   wherein the harmonic filtering means comprises a third inductive coupling means that is physically located inside a layout of the first inductive coupling means, the second inductive coupling means, or both;   wherein a distance between the first inductive coupling means and the third inductive coupling means is a first distance, a distance between the second inductive coupling means and the third inductive coupling means is a second distance, and a distance between the first inductive coupling means and the second inductive coupling means is a third distance, and   wherein the first distance is greater than the third distance, and the second distance is greater than the third distance.   
     
     
         32 . The matching network of  claim 31 , wherein the impedance matching means comprises a transformer comprising the first inductive coupling means as a first winding and the second inductive coupling means as a second winding, and wherein the first winding and the second winding are inductively coupled together. 
     
     
         33 . The matching network of  claim 31 , further comprising a means for receiving, by the antenna port, the output signal from the matching means for further processing or transmission. 
     
     
         34 . The matching network of  claim 31 , further comprising a means for receiving, by the antenna port, the output signal from the matching means for further processing or transmission. 
     
     
         35 . The communication matching network of  claim 31 , wherein an inductive coupling between the third coil and the first and second coils is less than or equal to 0.2. 
     
     
         36 . A communication matching network, comprising:
 a matching network configured to be coupled between a communication circuit and an antenna port, and configured to provide an impedance matching between the communication circuit and the antenna port when coupled thereto, the matching network comprising:
 an impedance matching circuit comprising at least a first inductance and a second inductance, the impedance matching circuit configured to receive a signal from the communication circuit and match an impedance between an output of the communication circuit and the antenna port; and 
 a harmonic filter configured to receive the signal from the impedance matching circuit and perform a harmonic filtering of the signal to remove undesired harmonics in the signal to generate an output signal, 
   wherein the harmonic filter comprises a harmonic inductance as a third inductance that is physically located inside a layout of the first inductance, and   wherein a distance between the first inductance and the third inductance is a first distance, a distance between the second inductance and the third inductance is a second distance, and a distance between the first inductance and the second inductance is a third distance, and   wherein the first distance is greater than the third distance, and the second distance is greater than the third distance.   
     
     
         37 . The communication matching network of  claim 36 , further comprising the communication circuit coupled to the matching network, and configured to provide the signal to the matching network. 
     
     
         38 . The communication matching network of  claim 37 , further comprising the antenna port configured to receive the output signal from the matching network, wherein the output signal is associated with the signal from the communication circuit 
     
     
         39 . The communication matching network of  claim 36 , wherein the impedance matching circuit comprises a transformer comprising the first inductance as a first winding and the second inductance as a second winding, and wherein the first winding and the second winding are inductively coupled together. 
     
     
         40 . A method to suppress multiple harmonics in a signal in a communication system, the method comprising:
 providing, by a communication circuit, a signal;   receiving, by a matching circuit, the signal;   suppressing, by the matching circuit, one or more harmonics of the received signal to generate an output signal,   wherein the matching circuit comprises:
 an impedance matching circuit having a first inductance and a second inductance, and configured to receive the signal from the communication circuit and match an impedance between an output of the communication circuit and an antenna port; and 
 a harmonic filter configured to receive the signal from the impedance matching circuit and perform a harmonic filtering of the signal to suppress harmonics in the signal, to generate the output signal, 
   wherein the harmonic filter comprises a harmonic inductance as a third inductance that is physically located inside a layout of the first inductance;   wherein a distance between the first inductance and the third inductance is a first distance, a distance between the second inductance and the third inductance is a second distance, and a distance between the first inductance and the second inductance is a third distance, and   receiving, by the antenna port, the output signal from the matching circuit for further processing or transmission.   
     
     
         41 . The method of  claim 40 , wherein the impedance matching circuit comprises a transformer comprising the first inductance as a first winding and a second inductance as a second winding, and wherein the first winding and the second winding are inductively coupled together. 
     
     
         42 . The method of  claim 40 , wherein an inductive coupling between the third inductance and the first and second inductances is less than or equal to 0.2.