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   Hybrid Coupler, 90-Degree, Ideal       

Hybrid Coupler, 90-Degree, Ideal

 

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Netlist Form

The ideal coupler model supports frequency domain analysis only, not time domain. An instance of a 90-degree hybrid coupler has the following Nexxim netlist syntax:

Axxx n1 n2 n3 n4 [CP=val] [PH1=val] [PH2=val] [RO=val] COMPONENT=hyb90

n1, n2, n3 and n4 are the nodes connected to the coupler. The entry COMPONENT=hyb90 identifies the element as a 90-degree hybrid coupler.

 


Ideal 90-Degree Hybrid Coupler Instance Parameters

Parameter

Description

Units

Default

CP

Coupling factor (must be a positive number)

dB

3.0104

PH1

Phase shift between port1 and port 2

Degree

-90

PH2

Phase shift between port 1 and port 3

Degree

-180

RO (RO)

Reference impedance

Ohm

50

Netlist Example

A87 11 21 13 44 CP=2.5 PH1=-75 PH2=-205 COMPONENT=hyb90

Notes

1. The ideal coupler models support frequency domain analyses only, not time domain. The Nexxim result agrees with the Circuit simulator (HCOM) result at all frequencies.

2. The table below details the operation of the 90 degree couplers. In this table, a=10-0.05CP in dB, A and B are voltages presented at the pins.


Hybrid 90-Degree Coupler Operation

Operation

n1

n2

n3

n4

Splitter with 90° phase shift (#1)

A

0

 

 

Splitter with 90° phase shift (#2)

0

A

 

 

Combiner

 

 

A

B

 

 



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