The article describes a dual-conversion superheterodyne receiver and a direct radio frequency (RF)-sampling technique. Topics include the dual-conversion receiver having configuration that consists of two mixers as well as two local-oscillators (LOs), the possibility to space the image frequency band...
RF attenuation switchable in wide range and small steps Refined preselection Very large frequency range for EMI measurements Low-noise preamplifier with wide dynamic range High-level mixer for IF conversion Additional filters ahead of IF preamplifier to avoid overloading due to broadband interference i...
of different types of lighting installations and their average life varied. legco.gov.hk 楊孝華議員: 局長在主體答覆第(一)部分的列表 中說 明, 不 同的 燈對 比每瓦 數有不同的發光效率,亦有不同的壽命。 legco.gov.hk [...] environmental impacts of the manufacture, assembly operation, tran...
circuits, such as radio tuners, frequency mixers or antenna impedance matching applications. Another use for variable capacitors is while prototyping an electronic circuit design. Sometimes, it is simply easier to find the appropriate capacitor value by trial and error instead of calculating it exactly...
Custom Assemblies Designer Kits MMIC Die Parts Reference Designs Test Solutions Research and Education --- Adapters Amplifiers Attenuators Baluns Bias Tees Cables Couplers Custom Assemblies DC Blocks Designer Kits Filters Fixed Equalizers Frequency Mixers Frequency Multipliers Impedance Matching Pads Limiters MM...
Der Frequenzgenerator 86 kann einen lokalen Oszillator des Mixers 84 umfassen. Es wurde festgestellt, dass es mehrere Störsignale unter 15 MHz gibt, die von der elektrischen Verdrahtung 12 aufgenommen werden. Normalerweise gibt es geringe oder keine Interferenz zwischen 15 bis 30 MHz, au...
Four types of single-gate MMIC MESFET mixers for L-band operation have been designed, simulated and compared. All of the designs use an active adder consisting of two common-gate MESFETs as their input stage and a source follower as their output stage for good RF/LO isolation and input/...