However, this creates large variations in the instantaneous output power, a condition described as high peak-to-average ratio (PAR).
What does P/AR stand for?
P/AR stands for Peak-to-Average Ratio
This definition appears somewhat frequently and is found in the following Acronym Finder categories:
- Science, medicine, engineering, etc.
We have 454 other meanings of P/AR in our Acronym Attic
- Per Annum
- Perimeter Divided by Area (measurement)
- Pilotless Aircraft (US Navy)
- Plant Account
- Power of Attorney
- Present Value of an Annuity
- Price Action (stock market)
- Pricing and Availability
- Product Area
Samples in periodicals archive:
The PowerDPD solution offers the following features: reduces the peak-to-average ratio (PAR) for single-carrier and multi-carrier signals; improves adjacent channel leakage ratio (ACLR) without the need for separate chipset or DSP; enables 45% efficiency using Axis Power Amplifiers; reduces cost for multi-channel MIMO systems; supports single and multicarrier environments; can be used in burst mode systems such as TDD-LTE and TD-SCDMA, the company said.
Engineers can measure PA efficiency, Error Vector Magnitude (EVM), Peak-to-Average Ratio (PAR), and Adjacent Channel Leakage Ratio (ACLR).
5 Key Features * Support for ADI's newest high-performance RF ICs * Increased visibility to signal levels within the signal chain, with the RF power in each stage displayed along with the peak and rms back-off from the stage's 1-dB compression point (P1dB) * Ability to set peak-to-average ratio and back-off thresholds in order to warn the user if the rms and/or peak power in a particular stage approaches the 1-dB compression point * Calculate the inter-stage RF power loss between two adjacent devices with mismatched impedance levels; voltage domain signal levels such as rms voltage, peak-to-peak voltage, and noise spectral density in nV/Hz; and signal quality metrics such as SNR, SFDR, IMD, and ACLR * Compatible with Windows XP, Vista and Windows 7 ADIsimPLL Version 3.
Key specifications of the new RF power LDMOS devices: MRF8P20165WH/S (1930 to 1995 MHz) * 37 W average power with input signal peak-to-average ratio (PAR) of 9.
The high peak-to-average ratio of these modulated signals causes PAs (power amplifiers) to be backed off from their maximum transmit powers significantly, thereby making the PA less efficient.
AxisNT PowerDPD(TM) benefits and features Reduces the peak-to-average ratio (PAR) for single-carrier and multi-carrier signals.
This conversion to digital broadcasting places significant demands on a transmitter's power amplifier and RF power transistors because the signals have very high peak-to-average ratios.