The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A solid-state 216-GHz communication link is presented. It utilizes a novel mixer-less transmitter technique to achieve efficient complex modulation using frequency multipliers (which are inherently nonlinear). The transmitter operates with coherent power combining of two frequency multiplier chains to achieve precise linear amplitude and phase modulation despite the strong nonlinearity of the multipliers...
An advanced power divider/combiner concept is presented and demonstrated. The new concept provides significant isolation and enhanced reflection cancelation for 1:N dividers/combiners. It is demonstrated with a 1∶4, 2–8 GHz, with 0.4 dB insertion loss, 20 dB isolation, and 10 dB return loss improvement over conventional (e.g. Wilkinson) dividers. Additionally, a 1∶3, 4–12 GHz (100% bandwidth) divider...
A novel power divider/combiner concept is presented and demonstrated at Ka-band. The new offset-divider/combiner concept provides reflection cancelation, and 1-to-N or N:/1 (arbitrary N, including odd numbers) splitting or summing with equal or unequal power division/summation. Additionally, it has inherently low loss due to its use of low impedance transmission lines. It can be implemented in most...
This paper presents an LO generation scheme for a 21GHz center-frequency, 4GHz instantaneous bandwidth channelized receiver. A single 1.33GHz reference source is used to simultaneously generate 20GHz and 22GHz LOs with quadrature outputs. Injection locking is used instead of conventional PLL techniques allowing low-power quadrature generation. A harmonic-rich signal, containing both even and odd harmonics...
This paper presents a simple, unified phase noise model for injection-locked oscillators (ILO). We show that an ILO is identical to a type-I first-order PLL in its noise behavior within the lock range. The model predicts the phase noise of injection-locked oscillators (ILO), injection-locked frequency dividers (ILFD), and injection-locked frequency multipliers (ILFM) as a function of the injection...
The generation of intermodulation distortion products due to the coupling of signals into the output port of an amplifier, often referred to as Reverse Intermodulation Distortion (IMD) can be a major problem when multiple transmitters are operated in close proximity. Such conditions can exist at cell telephone sites, broadcast facilities and even on satellites. This type of distortion can also be...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.