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Microwave Acronyms - P

Updated July 27, 2012

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P1dB power at one-dB gain compression  
P1dBin P1dB referenced to the input  
P1dBout P1dB referenced to the output  

PA

power amp

An amplifier that is capable of applying some real heat to the load.

PAE power-added efficiency For a power amp, the ratio of output power divided by the sum of input RF and DC power.
PAM pulse amplitude modulation  

PC

personal computer, or politically correct

We don’t care if you think that Microwaves101 is not PC, OK?

PDK process design kit What TriQuint or IBM or other open fabs will provide when you design an IC into their foundries.
PCM pulse code modulation, process control monitor  

PCS

personal communications systems

Wireless stuff, thankfully, everybody’s gotta have it.

PDS

personal digital cellular

Digital cell phone standard.

PEC perfect electrical conductor See our page on EM fundamentals.
PECVD plasma-enhanced chemical vapor deposition Yet another way to apply films to a semiconductor wafer.
PESA passive electronically steered antenna Often uses MEMS phase shifter technology.

PHEMT

pseudomorphic high electron mobility transistor

 

pF

pico-Farad

A unit of capacitance, 10E-12 Farads.

pH

pico-Henry

A unit of inductance, 10E-12 Henries.

PHS

personal handy phone system

Digital cordless phone standard.

PIN

P-type/intrinsic/N-type

A diode structure often used as an RF control component.

PIND particle impact noise detection A way to determine of you have any loose stuff inside your sealed-up module.
PLD pulsed laser deposition A laser is used to blast a plume of material that is transferred to a heated substrate.
PLF purse lepitition flequency Term used during IEEE talks given by Fujitsu and other Japanese companies.
pidooma pulled it directly out of my a$$ A widely accepted method for obtaining a speedy quotation or prediction.

PLL

phase locked loop

 

PMC perfect magetic conductor See our page on EM fundamentals.
PNA

programmable network analyzer

Here's Agilent's official PNA web page.

A PNA is a network analyzer that runs the Windows operating system instead of some proprietary interface written in embedded code. It's "programmable" in that you can install applications, network it like a PC, and use a thumb drive to get your data. Thanks to Adam!
POS piece of s### Like in the following want ad: 1989 Hyundai, POS, $500 or best offer.
PPI plan position indicator  

PPM

parts per million

Used to express ratios that are often very much less than 1%

PR photo-resist The material that is used used to pattern printed circuits.
PRF pulse repetition frequency  
PSB pink-slip blizzard If you stay in microwave engineering long enough you will know what this means...
PSD phase sensitive detector, power spectral density  
PSIA pounds per square inch, absolute This is pressure, relative to a vacuum.
PSIG pounds per square inch, gauge This is pressure, relative to room pressure.
PSK phase shift keying  
PTC positive temperature coefficient A thermistor with resistance value increasing with temperature.

PTFE

poly tetra-flouro ethelene

A dielectric material invented in 1938 by Dr. Roy Plunkett at Dupont, used in most RF coax cables and many soft boards.

PTH plated-through hole  

PWB

printed wiring board

 

PWM pulse-width modulation  

 


 
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