US 12,283,733 B2
Multi-tap transmission line system and methods thereof
Marius Draghia, Ottawa (CA)
Assigned to Radio Wires Inc., Ottawa (CA)
Filed by Radio Wires Inc., Ottawa (CA)
Filed on May 30, 2024, as Appl. No. 18/678,562.
Application 18/678,562 is a continuation of application No. PCT/CA2024/005043, filed on Apr. 3, 2024.
Claims priority of provisional application 63/458,967, filed on Apr. 13, 2023.
Prior Publication US 2024/0356188 A1, Oct. 24, 2024
Int. Cl. H01P 1/04 (2006.01); H01P 1/12 (2006.01); H01P 5/19 (2006.01)
CPC H01P 1/047 (2013.01) [H01P 1/127 (2013.01); H01P 5/19 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A multi-tap transmission line comprising:
a first end and at least one second end;
the transmission line having a corresponding characteristic impedance value (Zc);
the first end with a corresponding first end impedance, the first end impedance being same as the characteristic impedance;
the at least one second end with a corresponding at least one second end impedance, the corresponding at least one second end impedance being same as the characteristic impedance;
at least two tap circuits connected to the transmission line, wherein each tap circuit comprises a tap port, and wherein each tap port has a corresponding tap impedance value (Zo),
wherein the characteristic impedance value Zc is lower than each tap impedance value Zo, and
wherein, each tap circuit comprises:
a first resistive element corresponding to a first port of the tap circuit, and having a corresponding first resistance value;
a second resistive element corresponding to a second port of the tap circuit, and having a second resistance value;
the first and the second resistive values being substantially equal to a series resistance value (Rs),
a corresponding tap device connected to the corresponding tap port;
a tap resistive element corresponding to the tap port, the tap resistive element having a tap resistance value (Rt),
wherein the first resistance element, the second resistive element and the tap resistive element are connected at a connection point in a T-configuration, and
wherein the characteristic impedance value (Zc) minimizes a worst-case insertion loss (TTLN) between a first tap circuit and a last tap circuit of the at least two tap circuits, the worst-case insertion loss being determined based on a longitudinal insertion loss (LIL) and a transverse insertion loss (TIL) according to:

OG Complex Work Unit Math
wherein LIL is a longitudinal insertion loss value determined according to:

OG Complex Work Unit Math
wherein Zo(j) is a tap impedance value of a tap port j, j is a range of values indicative of tap index ranging from 2 to (N−1), N representing a total number of tap ports;
wherein TIL is a transverse insertion loss value determined according to:

OG Complex Work Unit Math
wherein Zo(j) is a tap impedance value of a tap port j, and j is 1 or N.