A wide bandwidth discriminator for use in a radio receiver

Details A wide bandwidth discriminator for use in a radio receiver A wide bandwidth discriminator for use in a radio receiver

H - Electricity

04

B

H04B 1/10 (2006.01) H03D 3/06 (2006.01) H03D 3/22 (2006.01)

Patent

CA 2163559

A wide bandwidth frequency discriminator circuit (200) employs a wide bandwidth limiting amplifier (202) to amplify the IF signal portion a received RF signal. A delay circuit (204), such as a micro strip transmission line, provides a delayed representation of the amplified signal to a multiplier circuit (206). The multiplier (206) in turn provides a product signal which is the product of the amplified output signal and the delayed representation of the amplified output signal. As will be appreciated, said product signal will be proportional to the phase difference between the amplified output signal and the delayed representation of the amplified output signal. This discriminator (200) operates to form a detection system capable of discriminating between desired and undesired components of the received RF signal even when said desired and undesired components are nearly identical in amplitude. This is due in part to the enhanced frequency response provided by the discriminator (200).

Un circuit discriminateur de fréquences (200) fonctionnant dans une bande large (200) utilise un amplificateur limiteur de largeur de bande (202) pour amplifier une portion de signal à fréquences intermédiaires d'un signal RF reçu. Un circuit de temporisation, (204) tel qu'une ligne de transmission du type microbande, fournit une représentation retardée du signal amplifié à un circuit multiplicateur (206). Le multiplicateur (206) fournit à son tour un signal de sortie qui est le produit du signal de sortie amplifié et de la représentation retardée du signal de sortie amplifié. On comprendra que le produit sera proportionnel à la différence de phase entre le signal de sortie amplifié et la représentation retardée du signal de sortie amplifié. Ce discriminateur (200) fonctionne comme un système de détection capable de distinguer entre les composantes désirables et les composantes indésirables du signal RF reçu, même lorsque ces composantes désirables et indésirables ont une amplitude presque identique. Ceci est dû en partie à la réponse en fréquence augmentée fournie par le discriminateur (200).

Affiliated with

Also associated with

Rating

A wide bandwidth discriminator for use in a radio receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A wide bandwidth discriminator for use in a radio receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A wide bandwidth discriminator for use in a radio receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2014921