hparameters

Create hybrid parameter object

Syntax

hh = hparameters(filename)

hh = hparameters(hnet)

hh = hparameters(data,freq)

hh = hparameters(rftbxobj)

Description

hh = hparameters(filename) creates a hybrid parameter object hh by importing data from the Touchstone file specified by filename. All data is stored in real/imag format.

hh = hparameters(hnet) creates a hybrid parameter object from the RF Toolbox™ network parameter object hnet.

hh = hparameters(data,freq) creates a hybrid parameter object from the hybrid parameter data, data, and frequencies, freq.

hh = hparameters(rftbxobj) extracts network data from rftbxobj and converts it into H-parameter data.

Examples

Extract H11

Read the file default.s2p as h-parameters and extract H11.

 h = hparameters('default.s2p')

h = 
  hparameters: h-parameters object

       NumPorts: 2
    Frequencies: [191x1 double]
     Parameters: [2x2x191 double]

  rfparam(obj,i,j) returns h-parameter hij

  h11 = rfparam(h,1,1);

Input Arguments

data — Hybrid parameter data

array of complex numbers

Hybrid parameter data, specified as array of complex numbers, of size 2-by-2-by-K. The function uses this input argument to set the value of the Parameters property of hh.

filename — Touchstone data file

character vector

Touchstone data file, specified as a character vector, that contains network parameter data. filename can be the name of a file on the MATLAB^® path or the full path to a file.

Example: hh = hparameters('defaultbandpass.s2p');

freq — Hybrid parameter frequencies

vector of positive numbers

Hybrid parameter frequencies, specified as a vector of positive real numbers, sorted from smallest to largest. The function uses this input argument to set the value of the Frequencies property of hh.

hnet — Network parameter data

scalar handle

Network parameter data, specified as a scalar handle. If hnet is a hybrid parameter object, then hh is a deep copy of hnet. Otherwise, the function performs a network parameter conversion to create hh. When converting network parameters, the same restrictions apply as those for RF Toolbox network parameter data conversion functions:

• ABCD parameter objects support 2N-port data.

• Hybrid-g parameter objects support 2-port data.

• Hybrid parameter objects support 2-port data.

• S-parameter objects support N-port data.

• Y-parameter objects support N-port data.

• Z-parameter objects support N-port data.

• T-parameter objects support 2-port data.

rftbxobj — network object

scalar handle

Network object, specified as scalar handle. Specify rftbxobj as one of the following types: rfdata.data, rfdata.network, and any analyzed rfckt type.

Output Arguments

hh — Hybrid parameter data

scalar handle

Hybrid parameter data, returned as a scalar handle. disp(hh) returns the properties of the object:

• Frequencies — Hybrid parameter frequencies, specified as a K-by-1 vector of positive real numbers sorted from smallest to largest. The function sets this property from the filename or freq input arguments.

• Parameters — Hybrid parameter data, specified as a 2-by-2-by-K array of complex numbers. The function sets this property from the filename or data input arguments.

Version History

Introduced in R2012b

R2023b: Recommended over rfdata.network

hparameters is recommend over rfdata.network because it enables you to calculate h-parameters for a circuit object, an RF data, and a network.

R2023a: Build network with vector of reference impedances for each port

The hparameters function now allows you to build a network with different reference impedance for each port.