complementary signal in hspice

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siddhiqvlsi

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Hi,

The following input signal is generated using hspice....

VA A 0 pulse(0.18v 0v 0n 1n 1n 50n 100n)

how to generate the complementary signal of it in spice?

Thanks in advance.....
 

Use a VCVS - voltage controlled voltage source. This is an E source. Connect the input terminals to your voltage source and reverse the output connections.

Keith
 
siddhiqvlsi said:
VA A 0 pulse(0.18v 0v 0n 1n 1n 50n 100n)

how to generate the complementary signal of it in spice?
Click to expand...

It's a pulse source: Vxxx n+ n- pulse (v1 v2 td tr tf pw per)
For a new pulse source VB between nodes B & 0 with complementary signal just reverse the voltage values v1 & v2 :
Code: 
VB B 0 pulse (0V 0.18V 0ns 1ns 1ns 50ns 100ns)
 
erikl said:
It's a pulse source: Vxxx n+ n- pulse (v1 v2 td tr tf pw per)
For a new pulse source VB between nodes B & 0 with complementary signal just reverse the voltage values v1 & v2 :
Code: 
VB B 0 pulse (0V 0.18V 0ns 1ns 1ns 50ns 100ns)
Click to expand...

Thanks for your reply.....I have used the same to generate the complementary signal.....Is there any way to generate the signal without using the voltage source VA 0r VB since it ultimately increases the average power....

Thanks in advance.....

- - - Updated - - -

keith1200rs said:
Use a VCVS - voltage controlled voltage source. This is an E source. Connect the input terminals to your voltage source and reverse the output connections.

Keith
Click to expand...

Thanks for your reply.... how to use VCVS to generate complementary signal....am new to spice.....Can you explain in detail?....Thanks
 

siddhiqvlsi said:
...Is there any way to generate the signal without using the voltage source VA 0r VB
Click to expand...

There are many ways to generate such signals: any type of oscillator + opAmp for phase reversal. But they all need power, whereas VCVS, pulse source or E-element sources don't consume any power (for themselves) as their internal generation resistance is zero.

siddhiqvlsi said:
... it ultimately increases the average power....
Click to expand...
Only that power which is needed by the load; the voltage sources themselves don't consume power.
 

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