switch
RF switches are components used for switching the signal paths of high frequency circuits in wireless communication devices SPDT, DPDT , SP4T, SP6T, SP8T, and SP10T mechanical and solid state RF switches for 50-ohm and 75-ohm systems spanning DC to 26.5 GHz Piezoelectric versus electrostatic actuation for a capacitive RF-MEMS switchfree download CALCULATIONS The mechanical […]
transmitter
Radio frequency(RF) transmitter is a circuit which consists of transducer,modulator,wave guide and an antenna used to transmit radio waves. X-Band RF transmitter and receiver design of APAA system for mobile satellite communicationsfree download A X-band active phased array antenna (APAA) system for mobile satellite communications was developed by ETRI. This system electrically and mechanically tracks […]
wideband printed circuit antenna
A small wideband microstrip -fed monopole antenna free download The rectangular patch has a distance of to the ground plane printed on the back surface of the substrate Wide – band planar monopole antennas , Ultra- wideband square planar Dual wideband printed monopole antenna for WLAN/WiMAX applicationsfree download conductor-backed plane can change impedance bandwidth of […]
power detector
A high speed and low power phase-frequency detector and charge-pumpfree download In this paper, we introduce a high-speed and low power Phase-Frequency Detector (PFD) that is designed using modified TSPC (True Single-Phase Clock) positive edge triggered D flip-flop. This PFD has a simpler structure with using only 19 transistors. The operation range An E-band 40dB […]
hybrid coupler
Optical single-sideband modulation based on a dual-drive MZM and a 120-degree hybrid coupler free download A novel scheme for implementing high-performance optical single-sideband (OSSB) modulation based on a dual-drive Mach-Zehnder modulator (MZM) and a 120-degree hybrid coupler is proposed and demonstrated. A RF signal is divided by the 120-degree hybrid This paper describes a miniaturized […]
balun
A dual-band coupled-line balun filterfree download In this paper, a new type of device called dual-band coupled-line bandpass balun filter is presented. Based on the traditional coupled-line filter theory and Marchand balun configuration, a new device with both filter-type, as well as balun -type characteristics is A 2 40 GHz active balun using 0.13 m […]
power divider
This letter presents a modified Gysel power divider for dual-band applications. A short-stub and an open-stub has been attached to the conventional Gysel structure. Closed-form design equations are derived. Power operation analysis shows that the new dual-band Compact planar magic-T using E-plane substrate integrated waveguide (SIW) power divider and slotline transitionfree download A novel planar […]
rf repeater
NLMS Adaptive Digital Filter with a Variable Step Size for ICS (interference cancellation system) RF repeater free download In the NLMS (normalized least mean square) adaptive filters, choosing a suitable step size is crucial as the stability and the steady-state convergence error of the adaptive filter heavily depends on the step size value. In this […]
low noise block
Low noise block downconverter design for satellite receiver system Vinasat 1 operating at C-bandfree download Abstract: This paper describes the study, design and fabrication of a low noise block downconverter (LNB) used for satellite receiver system Vinasat 1 operating at 3.4-4.2 GHz. The LNB design is compromised many importance DiSEqC Protocol and Low – Noise […]
gps receiver
a device that is capable of receiving information from GPS satellites and then to calculate the device’s geographical position. Using suitable software, the device may display the position on a map, and it may offer directions. GPS receivers are the most important hardware in a GPS surveying operation. Their characteristics and capabilities influence the techniques […]