The values of 1 and 2 for example can be obtained from the equation to calculate the attenuation of a signal at an off-tune frequency. Other on-line calculators There are more calculators on the world wide web than the ones on this website. See derivation below the calculator. The most bothersome in a relative narrowband system would be the intermodulation products, as they often appear in band. Is there anything else like that available online? RF Calculator Conversion from and to various RF units Intermodulation Calculate intermodulation for 2 and 3 frequency's up to the 9th order. However, the performance is still good even up to 250MHz-300MHz, which makes the LTC6400 suitable for even mid-to-high IF systems. Up to 1000 transmit and 1000 receive frequencies can be entered with a frequency range from 0 Hz to 999,999.99999 THz and for optical 0 to 999,999.99999 nm. Calculate the intermodulation distortion products (IMD3) arising from third order nonlinearities (third-order intercept point, IP3) in RF receivers under two-tone input. Question. Answer. 2 At low frequencies, the distortion products approach −100dBc. In an example system having two carrier frequencies f1 = 800 MHz and f2 = 801 MHz, the resulting intermodulation products within the switching bandwidth of the receiver are to be determined. More calculators and the source scripts can be found at: I am looking for an online program that calculates RF intermodulation (IMD.) F-Intermod . Intermod Assist Intermodulation Calculator and Frequency Coordination software is a unique tool -- it will change the way you approach the problem of intermodulation interference and the challenges of frequency coordination and channel assignment. It also defines a broadband system with equally spaced channels. Third order distortion causes multiple unwanted products. Each pair of frequencies is checked in both orders (A-to-B and B-to-A) for third-order intermodulation products within 200 kHz of any entered frequencies. Up to 30 frequencies may be tested together. When a complex musical passage is the source, the IMD distortion can be quite extraordinary! Here is a web site with an IMD program: F-Intermod calculates RF and optical intermodulation products. Marki Microwave designs and manufactures RF/Microwave components including mixers, amplifiers, multipliers, couplers, filters and power dividers. The most prominent during a two tone test would be the intermodulation products at 2f1-f2, 2f2-f1 and third harmonics at 3f1 and 3f2. For example, two frequencies, f 1 and f 2 may produce new frequencies such as f 2-f 1; f 1 +f 2; f 2-2f 1; f 2 +2f 1 or any other intermodulation component: m*f 2 ± n*f 1. where m and n are integers. online-intermod-calculator-other-than-shure-s. FAQ. This article describes a general algorithm to calculate the frequency locations of third-order intermodulation distortion products produced by a broadband amplifier for any number of test tones. There are harmonics of the fundamental frequencies and sum and difference frequencies. More info Warning: The IP3 value must be (much) greater than both tone levels for the calculation to be meaningful. wl7aml intermod program It's an old DOS program, but it is the only free program that I know of that properly deals with multi-channel radios. Figure 25.4 shows the 3rd order intermodulation distortion (IMD) products from a 2-tone signal test of the LTC6400-20. If you give several frequencies the same name, the program assumes it's a multiple channel radio, that can only be on one channel at a time. I know that Shure offers the Wireless Workbench. intermodulation measurements or obtained from equipment specifications 1 and 2: RF frequency selectivity parameters at frequency deviations f 1 and f 2 from the operating frequency f 0, respectively. Use this page to check for interference between and among multiple wireless frequencies operating simultaneously. It includes features you won't find in any other product -- including those that cost many times more.