Towertalk
[Top] [All Lists]

## Re: [TowerTalk] Beta match adjustment

 To: TexasRF@aol.com Re: [TowerTalk] Beta match adjustment Steve Hunt Mon, 19 Jul 2010 15:25:55 +0100 mailto:towertalk@contesting.com>
 ```Gerald, One example might be where you need to divide two complex numbers - for example you want to calculate (a+jb)/(c+jd); that requires some tedious maths. However if the complex numbers are expressed in polar form: (w @ angle x) and (y @ angle z), the answer is simple: w/y @ angle(x-z) The engineers amongst us will be very familiar with swapping between the two forms and using whichever is the easier to manipulate in a particular calculation. We often use the polar form without realising it; for example a resistance of 40 ohms in series with a reactance of 30 ohms gives a total impedance of 50 ohms. We've unwittingly moved from the 40+j30 form to the 50@angle37degrees polar form. 73, Steve G3TXQ TexasRF@aol.com wrote: > Thanks Steve. The series and parallel forms of notation are very intuitive; > easy to visualize. Can you enlighten me/us on the advantages of using > polar notation? > > There has to be a good reason for using it, right? > > 73, > Gerald > K5GW > _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread Re: [TowerTalk] 50 ohm yagis (40M2L) ?, (continued) Re: [TowerTalk] 50 ohm yagis (40M2L) ?, jimlux Re: [TowerTalk] 50 ohm yagis (40M2L) ?, donhall161 Re: [TowerTalk] 50 ohm yagis (40M2L) ?, Kevin Normoyle Re: [TowerTalk] 50 ohm yagis (40M2L) ?, jimlux Re: [TowerTalk] 50 ohm yagis (40M2L) ?, Kevin Normoyle Re: [TowerTalk] Beta match adjustment, Rick Craig Re: [TowerTalk] Beta match adjustment, TexasRF Re: [TowerTalk] Beta match adjustment, Steve Hunt Re: [TowerTalk] Beta match adjustment, Rick Craig Re: [TowerTalk] Beta match adjustment, TexasRF Re: [TowerTalk] Beta match adjustment, Steve Hunt <=