Transmitter/receiver configuration for higher frequencies

US5566360A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Josef Fenk · Ottenburg, DE
• Helmut Herrmann · Hersbruck, DE
• Peter Sehrig · Pocking, DE
• Werner Veit · Unterhaching, DE

Key dates

• Filing date: Apr 13, 1994
• Grant date: Oct 15, 1996
• Expiry date: Apr 13, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/40
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A integratable transmitter/receiver configuration for higher frequencies includes a reception path mixer multiplying a reception signal and a carrier frequency signal with one another. A controlled first intermediate frequency oscillator can be turned off by a switch control signal and has a frequency range being reversible by a first range control signal. A demodulator is connected downstream of the reception path mixer and receives the output signal of the first intermediate frequency oscillator both directly and phase-displaced by 90.degree.. A phase detector device is connected downstream of and controls the first intermediate frequency oscillator, and has a frequency range being reversible by a second range control signal. A controlled second intermediate frequency oscillator is connected parallel to the first intermediate frequency oscillator and can be turned on by the switch control signal. A transmission path mixer has one input being connected to the outputs of the first and second intermediate frequency oscillators and has another input receiving the carrier frequency signal. A modulator is connected downstream of the transmission path mixer, receives an input signal, an…