Integrated RF receiver/waveguide
First Claim
1. A front end portion of an RF receiver comprising:
- a waveguide for directing and confining a received microwave signal incident on an end thereof, said waveguide having a plurality of conductive walls for facilitating the confinement and propagation of said received microwave signal therein with one of said walls having an aperture therein;
A microwave integrated circuit (MIC) receiver mounted on a first circuit board and including a plurality of discrete devices in combination with integrated circuitry positioned on the outer surface of said one of said walls immediately exterior to said waveguide; and
an RF responsive probe inserted through an aperture on said first circuit board and through the aperture in said one of said walls and extending into said waveguide and coupled to said MIC receiver for providing said received microwave signal thereto.
3 Assignments
0 Petitions
Accused Products
Abstract
The front end of a microwave receiver includes a waveguide with one wall comprised partially of the conductive ground plane of a printed circuit board. On the opposite side of the circuit board is mounted receiver front end circuitry including packaged, discrete devices and integrated circuits. An RF probe is inserted through the circuit board and into the waveguide for picking up a signal incident thereon and providing it to the aforementioned receiver front end circuitry. Incorporated in the waveguide is a cavity also partially formed from the ground plane of the receiver circuit board and containing a dielectric resonator element which, in combination with an oscillator located on the circuit board, provides a reference frequency for mixing with the received signal in generating an IF signal which is then provided to IF signal processing circuitry. The integrated RF receiver/waveguide is compact, incorporates readily available components in an inexpensively manufactured structure, and is particularly adapted for the front end of an SHF receiver such as utilized to receive satellite television signals.
-
Citations
11 Claims
-
1. A front end portion of an RF receiver comprising:
-
a waveguide for directing and confining a received microwave signal incident on an end thereof, said waveguide having a plurality of conductive walls for facilitating the confinement and propagation of said received microwave signal therein with one of said walls having an aperture therein; A microwave integrated circuit (MIC) receiver mounted on a first circuit board and including a plurality of discrete devices in combination with integrated circuitry positioned on the outer surface of said one of said walls immediately exterior to said waveguide; and an RF responsive probe inserted through an aperture on said first circuit board and through the aperture in said one of said walls and extending into said waveguide and coupled to said MIC receiver for providing said received microwave signal thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An RF signal receiver comprising a circuit board having an aperture therein and on a first side thereof a conductive ground plane and on a second side thereof coupled in circuit an amplifier having an input lead responsive to a received RF signal for the amplification thereof, a reference frequency signal source and a mixer wherein said amplified received signal and a reference frequency signal are mixed for generating an IF signal, said RF signal receiver further including a waveguide having a plurality of walls defining a closed passage for confining and directing a received RF signal,
means for mounting said circuit board on said waveguide such that the first side of said circuit board forms a part of one of the walls of said waveguide and means for positioning said input lead in said aperture such that said input lead extends into said waveguide for picking up an RF signal incident on said waveguide.
Specification